Emerson Vilter PLC Operation Manual

Blower Package PLC

Operation manual

Blower Packages - Standard Vilter Warranty Statement

Seller warrants all new assembled equipment manufactured by it and supplied to Buyer to be free from defects in
materials and workmanship for a period of (a) eighteen (18) months from the date of shipment or (b) twelve (12)
months from the date of installation at the end user’s location, whichever occurs fi rst.

If within such period any such product shall be proved to Seller’s satisfaction to be defective, such product shall be
repaired or replaced at Seller’s option. Such repair or replacement shall be Seller’s sole obligation and Buyer’s ex­clusive remedy hereunder and shall be conditioned upon (a) Seller’s receiving written notice of any alleged defect
within ten (10) days after its discovery, (b) payment in full of all amounts owed by Buyer to Seller and (c) at Seller’s
option, Buyer shall have delivered such products to Seller, all expenses prepaid to its factory. Expenses incurred
by Buyer in repairing or replacing any defective product (including, without limitation, labor, lost refrigerant or
gas and freight costs) will not be allowed except by written permission of Seller. Further, Seller shall not be liable
for any other direct, indirect, consequential, incidental, or special damages arising out of a breach of warranty.

This warranty is only applicable to products properly maintained and used according to Seller’s instructions. This
warranty does not apply (i) to ordinary wear and tear, damage caused by corrosion, misuse, overloading, neglect,
improper use or operation (including, without limitation, operation beyond rated capacity), substitution of parts
not approved by Seller, accident or alteration, as determined by Seller or (ii) if the product is operated on a gas
with an H2S level not approved by Seller. In addition, Seller does not warrant that any equipment and features
meet the requirements of any local, state or federal laws or regulations. Products supplied by Seller hereunder
which are manufactured by someone else are not warranted by Seller in any way, but Seller agrees to assign to
Buyer any warranty rights in such products that Seller may have from the original manufacturer. Labor and ex­penses for repair are not covered by warranty.

THE WARRANTY CONTAINED HEREIN IS EXCLUSIVE AND IN LIEU OF ALL OTHER REPRESENTATIONS AND
WARRANTIES, EXPRESS OR IMPLIED, AND SELLER EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Any description of the products, whether in writing or made orally by Seller or Seller’s agents, specifi cations,
samples, models, bulletins, drawings, diagrams, engineering sheets or similar materials used in connection with
Buyer’s order are for the sole purpose of identifying the products and shall not be construed as an express war­ranty. Any suggestions by Seller or Seller’s agents regarding use, application or suitability of the products shall not
be construed as an express warranty unless confi rmed to be such in writing by Seller.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

i

Important Message

READ CAREFULLY BEFORE INSTALLING AND STARTING YOUR BLOWER.

The following instructions have been prepared to assist in installation, operation and maintenance of Vilter blower
packages. Following these instructions will result in a long life of the package with satisfactory operation.

The entire manual should be reviewed before attempting to install, operate, service or repair any part of the
package.

A blower is a positive displacement machine. It is designed to compress gas. The blower must not be
subjected to liquid carry over. Care must be exercised in properly designing and maintaining the system
to prevent conditions that could lead to liquid carry over. Vilter Manufacturing is not responsible for the
system or the controls needed to prevent liquid carry over and as such Vilter Manufacturing cannot warrant
equipment damaged by improperly protected or operating systems.

Vilter components are thoroughly inspected at the factory. However, damage can occur in shipment. For
this reason, the equipment should be thoroughly inspected upon arrival. Any damage noted should be re­ported immediately to the Transportation Company. This way, an authorized agent can examine the unit,
determine the extent of damage and take necessary steps to rectify the claim with no serious or costly delays.
At the same time, the local Vilter representative or the home office should be notified of any claim made.

All inquires should include the Vilter sales order number, serial and model number. These can be found on the
nameplate on the blower.

All requests for information, services or parts should be directed to:

Vilter Manufacturing LLC

Customer Service Department

P.O. Box 8904

5555 South Packard Ave

Cudahy, WI 53110-8904 USA

Telephone: [phone]

Fax:[phone]

E-mail: [e-mail]

Equipment Identification Numbers:

Vilter Order Number: _______________________Blower Serial Number: _________________
Vilter Order Number: _______________________Blower Serial Number: _________________
Vilter Order Number: _______________________Blower Serial Number: _________________
Vilter Order Number: _______________________Blower Serial Number: _________________

ii

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Table of Contents

Section Title Section Number

Blower Packages - Standard Vilter Warranty Statement ..........................................................................i

Important Message................................................................................................................................ii

Section 1 • General Information

How To Use This Manual .........................................................................................................................1-1

Glossary of Terms ................................................................................................................................... 1-2

Hardware Components .......................................................................................................................... 1-4

Wiring Requirements ............................................................................................................................. 1-6

VFD Installation Recommendations ....................................................................................................... 1-7

Section 2 • Operation Descriptions

Overview ...............................................................................................................................................2-1

Operational Descriptions and Diagrams .................................................................................................2-2

Configuration of the Blower Package ......................................................................................... 2-2

Starting of the Blower/Permissives .............................................................................................2-2

Anti-Recycle ..............................................................................................................................2-2

Automatic Speed Control ...........................................................................................................2-2

Operating Modes .......................................................................................................................2-3

Load Limits and Forced Unloading..............................................................................................2-3

Safeties ......................................................................................................................................2-3

Emergency Stop ........................................................................................................................2-5

Supplemental Blower Motor Protection .....................................................................................2-5

Air Cooled Oil Cooler Fan ............................................................................................................ 2-6

External Electric Oil Pump ..........................................................................................................2-6

Oil Pressure Safety Switch ..........................................................................................................2-6

Air Cooled Aftercooler - Step Type .............................................................................................. 2-6

Air Cooled Aftercooler - VFD Type ..............................................................................................2-7

Water Cooled Gas Aftercooler ....................................................................................................2-8

Gas Scrubbers ............................................................................................................................2-9

Discharge Recycle Valve .............................................................................................................2-10

Section 3 • Overview Screens

Blower and System Overview Screens .................................................................................................... 3-1

Section 4 • HMI Navigation

Main Menu Screen .................................................................................................................................4-1

HMI Security .......................................................................................................................................... 4-2

Default .................................................................................................................................................4-2

OP1, OP2, OP3, OP4, OP5 (Operators) ...................................................................................................4-2

Super (Supervisor) .................................................................................................................................4-2

Logging In .............................................................................................................................................. 4-2

Section 5 • Configuration - Supervisor Level

Configuration Screen - Supervisor (SUPER) Level ....................................................................................5-1

Editing Device Names ............................................................................................................................5-4

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

TOC - 1

Table of Contents

Section Title Section Number

Section 6 • Instrument Calibration

Calibration Main Screen ......................................................................................................................... 6-1

Pressure Calibration Screen ....................................................................................................................6-2

Calibrate Pressure Instrument ....................................................................................................6-3

Calibrate Transducer to a Known Pressure .................................................................................. 6-3

Temperature Calibration Screen ............................................................................................................. 6-4

Calibrate Temperature Instrument ............................................................................................. 6-4

Other Analog Calibration Screen ............................................................................................................6-5

Calibrate an Additional Instrument ............................................................................................ 6-5

Section 7 • Blower Configuration and Control Setpoints

Setpoints and Control Screens ...............................................................................................................7-1

Changing Setpoints ................................................................................................................... 7-1

Blower Configuration Screen ..................................................................................................................7-2

Blower Control Setpoints - Suction Pressure ........................................................................................... 7-3

Blower Control Setpoints - Discharge Pressure .......................................................................................7-5

Section 8 • Alarm and Trip Setpoints

Alarm and Trip Setpoints ........................................................................................................................8-1

Alarm and Trip Setpoints - Page 1 ...........................................................................................................8-1

Alarm and Trip Setpoints - Page 2 ...........................................................................................................8-2

Section 9 • Step and PID Device Control Screens

Aftercooler Screens ................................................................................................................................9-1

Aftercooler (VFD Type) Setpoints ...............................................................................................9-1

Aftercooler (Step Type) Setpoints ..............................................................................................9-2

Water Cooled Aftercooler Setpoints ...........................................................................................9-3

Discharge Recycle Valve Screen .............................................................................................................. 9-4

Discharge Recycle Valve Setpoints .............................................................................................9-4

Start Menu Popup Screen ....................................................................................................................... 9-5

Section 10 • Diagnostic Screens

IO/Comms Diagnostics Screen ...............................................................................................................10-1

Event List Screen ....................................................................................................................................10-2

Diagnostics Forced Outputs Screen ........................................................................................................ 10-3

Captured Data at Shutdown Screen .......................................................................................................10-4

Initial Baseline Running Data Screen .......................................................................................................10-5

TOC - 2

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Table of Contents

Section Title Section Number

Section 11 • Alarms, Trips, Status Information
and Troubleshooting

Alarm and Trips ......................................................................................................................................11-1

Alarm Listing .......................................................................................................................................... 11-2

Trip Listing .............................................................................................................................................11-9

Status Messages and Blower State Indicator ...........................................................................................11-18

Troubleshooting ....................................................................................................................................11-22

If the Blower Will Not Start ......................................................................................................... 11-22

If Control Power Will Not Turn On ..............................................................................................11-22

Section 12 • Central Controller Communications

Communication with a Central Controller/DCS ...................................................................................... 12-1

VPN Access ................................................................................................................................12-1

Setting Up Communications ......................................................................................................12-1

Watchdog Timer ........................................................................................................................12-1

Data that can be Read from the Blower PLC ............................................................................................12-1

Live Instrument Data .................................................................................................................12-1

Alarm and Trip Data ...............................................................................................................................12-8

Status Data ............................................................................................................................................12-17

States of Discrete I/O .............................................................................................................................12-21

Blower State Indicator ............................................................................................................................12-25

Data that can be Written to the Blower PLC ............................................................................................12-26

Discrete Blower Commands ....................................................................................................... 12-26

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

TOC - 3

List of Tables and Figures

Table/Figure Section Number

Tables

Table 11-1. Alarm Listing ........................................................................................................................ 11-2

Table 11-2. Trip Listing ...........................................................................................................................11-9

Table 11-3. Status Listing .......................................................................................................................11-16

Table 12-1. Engineered Units Value Interpretation (INT_OUT[x]) ...........................................................12-2

Table 12-2. Live Instrument Data ............................................................................................................ 12-2

Table 12-3. Alarm Data ........................................................................................................................... 12-8

Table 12-4. Trip Data ..............................................................................................................................12-12

Table 12-5. Status Data ..........................................................................................................................12-17

Table 12-6. Discrete Input States ............................................................................................................12-21

Table 12-7. Discrete Output States .........................................................................................................12-23

Table 12-8. State Indicator .....................................................................................................................12-25

Table 12-9. Blower Command (Real).......................................................................................................12-26

Table 12-10. Blower Command (Double Integer) ....................................................................................12-26

Figures

Figure 2-1. Operational Diagram - Load Limits / Forced Unloading (Example) .........................................2-4

Figure 2-2. Control Panel Master Power and Emergency Stop Electrical Circuit ....................................... 2-5

Figure 2-3. Operational Diagram - Air Cooled Aftercooler (Step Type) ..................................................... 2-6

Figure 2-4. Operational Diagram - Air Cooled Aftercooler (VFD Type) .....................................................2-7

Figure 2-5. Operational Diagram - Water Cooled Gas Aftercooler ........................................................... 2-8

Figure 2-6. Operational Diagram - Discharge Recycle Valve .................................................................... 2-10

Figure 3-1. Basic Blower Package Screen ................................................................................................3-1

Figure 4-1. Main Menu Screen ................................................................................................................4-1

Figure 4-3. Login Popup Screen ..............................................................................................................4-2

Figure 4-4. Login Screen Keyboard .........................................................................................................4-3

Figure 5-1. Configuration Screen - All Options Shown (Supervisor Level) ................................................5-1

Figure 5-2. Set Date/Time Pop-Up Screen - Supervisor Level ................................................................... 5-2

Figure 5-3. Change Password Pop-Up Screen - Supervisor Level ..............................................................5-3

Figure 5-4. Define Device Names - Devices and Vessels (Supervisor Level) .............................................. 5-4

Figure 5-5. Define Device Names - Instrumentation (Supervisor Level) ...................................................5-5

Figure 5-6. Define Device Names - Alarm and Trip 1 (Supervisor Level) (1 of 2) .......................................5-6

Figure 5-7. Define Device Names - Alarm and Trip 2 (Supervisor Level) (2 of 2) .......................................5-7

Figure 6-1. Instrument Calibration Overview Screen ..............................................................................6-1

Figure 6-2. Pressure Calibration Screen - 1 of 3 .......................................................................................6-2

Figure 6-3. Pressure Calibration Screen - 3 of 3 .......................................................................................6-3

Figure 6-4. Temperature Calibration Screen ...........................................................................................6-4

Figure 6-5. Other Analog Calibration Screen .......................................................................................... 6-5

Figure 7-1. Numeric Entry Pop-up Screen ...............................................................................................7-1

Figure 7-2. Blower Configuration Screen ................................................................................................7-2

Figure 7-3. Blower Control Screen - Suction Pressure ..............................................................................7-4

Figure 7-4. Blower Control Screen - Discharge Pressure .......................................................................... 7-5

TOC - 4

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

List of Tables and Figures

Table/Figure Section Number

Figure 8-1. Alarm and Trip Setpoints Screen - 1 of 2 ................................................................................8-1

Figure 8-2. Alarm and Trip Setpoints Screen - 2 of 2 ................................................................................8-2

Figure 9-1. Aftercooler (VFD Type) Screen ..............................................................................................9-1

Figure 9-2. Aftercooler (Step Type) Screen .............................................................................................9-2

Figure 9-3. Water Cooled Aftercooler Screen .......................................................................................... 9-3

Figure 9-4. Discharge Recycle Valve Screen ............................................................................................9-4

Figure 9-5. Start Menu ...........................................................................................................................9-5

Figure 10-1. IO/Comms Diagnostics Screen ........................................................................................... 10-1

Figure 10-2. Event List Screen ................................................................................................................. 10-2

Figure 10-3. Diagnostics Forced Output Screen ...................................................................................... 10-3

Figure 10-4. Captured Data at Shutdown Screen ....................................................................................10-4

Figure 10-5. Initial Baseline Running Data Screen ...................................................................................10-5

Figure 11-1. Alarm/Trip/Status Bars (Main Menu Screen) ........................................................................ 11-1

Figure 11-2. Alarm Popup Screen ...........................................................................................................11-1

Figure 11-3. Alarm/Trip/Status Bars (Main Menu Screen) ........................................................................ 11-18

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

TOC - 5

Blank / TOC

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 1 • General Information

HOW TO USE THIS MANUAL

This manual contains instructions for the PLC. It has
been divided into 12 sections:

Section 1: General Information

Section 2: Sequence of Operation

Section 3: Overview Screens

Section 4: HMI Navigation

Section 5: Confi guration - Supervisor Level

Section 6: Instrument Calibration

Section 7: Blower Confi guration and Control Setpoints

Section 8: Alarms and Trips Setpoints

Section 9: Step and PID Device Control Screens

Section 10: Diagnostics Screens

Section 11: Alarms, Trips, Status Information and

Troubleshooting

Section 12: Communications with a Central

Controller/DCS

ADDITIONAL IMPORTANT NOTES

• Due to continuing changes and unit updates, always
refer to the Vilter.com website to make sure you have
the latest manual.

• Any suggestions of manual improvements can be
made to Vilter Manufacturing at the contact informa­tion on page ii.

It is highly recommended that the manual be reviewed
prior to servicing system parts.

Figures and tables are included to illustrate key concepts.

Safety precautions are shown throughout the manual.
They are defi ned as the following:

NOTICE - Notice statements are shown when there are
important information that shall be followed. Not fol­lowing such notices may result in void of warranty, seri­ous fi nes, serious injury and/or death.

WARNING - Warning statements are shown when there
are hazardous situations, if not avoided, will result in se­rious injury and/or death.

CAUTION - Caution statements are shown when there
are potentially hazardous situations, if not avoided, will
result in damage to equipment.

NOTE - Notes are shown when there are additional infor­mation pertaining to the instructions explained.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

1 – 1

Section 1 • General Information

Glossary of Terms

Aftercooler Heat Exchanger

Used to cool discharge gas from the blower package.

Aftercooler Outlet Temperature

Temperature of gas measured at the outlet of the
Aftercooler.

Alarm Warning

Annunciated by the blower PLC that an operational or
process condition is abnormal. When active, alarms will
be displayed but will not shut down the blower package.

Bearing Temperature

Temperature of the bearings of the blower main motor
measured by an RTD.

Blower

Positive displacement rotary compressor intended to
move high volume of gas at relatively low pressure.

Blower Offset Dwell Time

Amount of time between starting individual blowers.
Used in applications where all blowers on a package
starting at the same time would put too great of a bur­den on the electrical infrastructure.

Discharge Recycle Control Pressure
Pressure of discharge gas measured at the Discharge
Recycle Valve. Used to control the Discharge Recycle
Valve.

Discharge Recycle Valve

Motorized or Air Actuated Valve that recycles discharge
gas back to the suction side of the blower package.

Discharge Pressure

Pressure of the refrigerant or gas measured at the outlet
of the blower.

Discharge Temperature

Temperature of the refrigerant or gas measured at the
outlet of the blower.

Ethernet IP

Communication protocol used to communicate to the
blower PLC.

General Trip
Shutdown condition that applies to the entire blower
package. If active, will shut down the entire package.

HMI

HMI stands for “Human-Machine Interface.” The blower
HMI is a touchscreen terminal mounted in the door of
the blower control enclosure.

Blower Package

Arrangement of up to 4 blowers controlled by a com­mon PLC controller.

Blower-Specifi c Trip

A shutdown condition that applies to a specifi c blower.

Differential Pressure

The difference between two pressures.

Discharge Recycle Control Pressure

Pressure of discharge gas measured at the Discharge
Recycle Valve. Used to control the Discharge Recycle
Valve.

1 – 2

Inlet Scrubber

Vessel located on the inlet side of gas blower or gas chill­er to remove moisture and/or contaminants.

Inlet Scrubber Inlet Pressure

Pressure of gas measured at the inlet of the inlet
scrubber.

Inlet Scrubber Outlet Pressure

Pressure of gas measured at the outlet of the inlet
scrubber.

Inlet Scrubber Pressure Drop

Pressure differential between inlet and outlet of the in­let scrubber. Calculated: Scrubber Inlet Pressure minus
Scrubber Outlet Pressure.

Main Motor

AC induction motor that is coupled to and drives the
blower.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 1 • General Information

Oil Cooler

Heat Exchanger where hot oil from the blower is cooled.

Oil Pressure Safety Switch

Pressure switch that shuts down blower on low oil pres­sure, if installed.

Outlet Scrubber

Vessel located on the outlet side of gas blower or gas
chiller to remove moisture, oil, and/or contaminants.

Outlet Scrubber Inlet Pressure

Pressure of gas measured at the inlet of the outlet
scrubber.

Outlet Scrubber Outlet Pressure

Pressure of gas measured at the outlet of the outlet
scrubber.

Outlet Scrubber Pressure Drop

Pressure differential between inlet and outlet of the out­let scrubber. Calculated: Scrubber Inlet Pressure minus
Scrubber Outlet Pressure.

Silencer
Vessel located on the outlet of the blower.

Suction Pressure

Pressure of the refrigerant or gas measured at the inlet
of the blower.

Suction Temperature

Temperature of the refrigerant or gas measured at the
inlet of the blower.

Temperature Transmitter

Device that measures temperature and transmits the
temperature reading as a 4-20mA signal. This 4-20mA
signal is read by the PLC and displayed as a temperature.

Tr ip

Blower shutdown due to an abnormal process or opera­tional condition.

VFD

VFD stands for “Variable Frequency Drive.” A VFD is a
motor control device that can vary the speed of an AC
induction motor.

PID Controller

PID stands for “Proportional Integral Derivative.” A PID
controller manipulates a control variable (example: valve
position or fan/pump speed) to maintain a process vari­able (example: process temperature or pressure) at a de­sired value (setpoint). The controller is driven by math­ematical calculations that tell the control variable how to
react to changes in the process variable.

PLC

PLC stands for “Programmable Logic Controller.” The
Blower PLC is an industrial computer that controls and
monitors the blower package.

Pressure Transducer or Transmitter

Device that measures pressure and transmits the pres­sure reading as a 4-20mA signal. This 4-20mA signal is
read by the PLC and displayed as a pressure.

RTD

RTD stands for “Resistance Temperature Detector.”
RTDs use electrical resistance to measure temperature.
This resistance is read by the PLC and displayed as a
temperature.

VPN

VPN stands for “Virtual Private Network.” A VPN con­nection allows remote access to the blower PLC.

Winding Temperature

Internal winding temperature of the blower main motor
measured by an RTD.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

1 – 3

Section 1 • General Information

Hardware Components - PLC Exterior

Each Blower Package PLC may differ, but below are typical components that can found in each PLC. For specifi c PLC
layout, refer to supplied electrical drawings.

1 - HMI Cover

2 - Enclosure Door

3 - Door Latch

4 - Main Enclosure

2

1

5 - HMI (Panel View Plus 6)

6 - Panel Heater & Mounting (Field Installed)

7 - Emergency Stop Button

8 - Blower Control Reset Button

9 - Master Power

3

4

5

9

8

7

1 – 4

6

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 1 • General Information

Hardware Components - Main Enclosure Interior

10 - Terminal Blocks (AC Connections)

11 - Relays

12 - Fuses

13 - DC Power Supplies

14 - UPS

15 - CompactLogix Processor with Ethernet, and

Memory Card

10 11 12 13

N1
N1
N1
N1
N1
N1
N1
N1
N1

N1
1111
1112
1113
1114
1115
1081
1081
1081
1081
1081
1081
1081
1081
1081
1081
1081
1081
1081
2051
2071
2091
2111
2131
2151
2171
2191
2211
2231
2251
2271
2291
2311
2331
2531
2551
2571
2591
2611
2631
2651
2671
2691
2711
2731
2751
2771
2791
2811
2831

3031
3051
3071
3091
3111
3131

3191
3151

3211
3231

3171
3251
3271
3291
3311
3331

4181
4321
4341
4681
4701
4721
4741
4761
4781

22

21

20

4801
4821
4841

11612
11632

10011
10012
10031
10032
10051
10071
10072
10091
10111
10112
10131

10151
10152
10171
10172
10191
10192
10211
10212
10231
10251
10252

10291
10292
10311
10312
10331
10332
10351
10352
10371
10391
10392

10511
10512
10531
10532
10571
10572
10591
10611
10612

10651
10652
10671
10672
10691
10692
10711
10712
10731
10751
10752

11011
11012
11031
11032
11051
11052

11131
11132
11151
11152
11171
11172

11242
11262

SH

SH

SH

GND

GND

GND

5071

5101

5131

1584

1584

1584

1583
1011
GND

N1
N1

11342

16 - Modules

17 - Compact Logix Power Supply

19 - Terminal Blocks (DC Low Voltage Connections)

20 - Terminal Blocks (Main Power Connections)

21 - Terminal Blocks (Customer Connections)

22 - Ethernet Switch, 5 Port RJ45

N1

GND

1281

1282

14

15

16

SH

SH

SH

SH

SH

SH

SHSHSHSHSH

SH

5161

5191

5221

1584

1584

1584

1584

5251SH5281

5661

5601

5631

5691

5571

1584

1584

1584

1584

1584

1584

SHSHSH

6061

6121SH6151

6091

5751

5781

5721

6051

6111

6141

6081

1584

1584

1584

SH

SH

SH

SH

SH

SH

SH

6561

6211

6551

6241

6271

6301

6201

6231

6261

6291

SH

SH

SH

SH

6591

6621

6581

6611

SHSHSH

6651

6711

6741

6771

6801

6641

6701

6731

6761

6791

19 17

16

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

1 – 5

Section 1 • General Information

Wiring Requirements

• Incoming power enters on the left bottom wall of the
PLC control enclosure. Route these conductors in the
space between the sub-panel and inside wall of the
enclosure.

• DC control, analog and communications or network
wiring enters on the right bottom wall of the PLC con­trol enclosure.

• Wiring external to the panel per NEC (NFPA 70), ANSI

12.12.01 and UL-598A.

• Panel construction and wiring per UL-508A for all
panels and ANSI 12.12.01 and UL-698A for hazardous
locations.

• Electrical transmission, control, and alarm wiring
shall be stranded copper no smaller than #14 AWG.
Use JIC color code, unless otherwise noted.

• All control circuits from a source outside of this panel
are to be #14 AWG Orange.

• All control circuit neutrals from a source outside of
this panel are to be no smaller than #14 AWG White/
Orange Tracer.

• All analog inputs are to be connected with shielded
cable. Shield terminated at panel side and isolated at
device side.

• All shielding is to be grounded at a single point on the
chassis.

• Analog wiring must be run separate from AC wiring
and kept separate within the enclosure.

• All analog signal wiring shall be grounded at one end
only. Ground shield of signal cables.

• Use alpha P/N 2423C, 3 Cond, 18 AWG, shielded or
approved equal.

• Only one customer network cable to switch.

• Unused defi ned as having a previous assignment.
Spare defi ned as no previous assignment.

• Where applicable, remove jumper between connec­tions if used.

• All power circuits from a source outside of this panel
are to be no smaller than #12 AWG Orange.

• All power circuit neutrals from a source outside of
this panel are to be no smaller than #12 AWG White/
Orange Tracer.

• All equipment grounds must be Green/Yellow. For
ground conductors larger than #6 AWG, apply Green/
Yellow heat shrink or color conductor with marker at
both ends.

• All power sources for heating devices shall be sup­plied by others.

• Designated for a trip function (i.e. limit trip, se­quence shutdown, etc.). Recommended hard wire
connection.

• Use alpha P/N 2422C, 2 Cond, 18 AWG, shielded or
approved equal.

• Category 6 Ethernet cable is recommended for all of
our equipment.

SEPARATION OF INTRINSICALLY SAFE CIRCUITS (IF
USED)

The intrinsically safe wiring enters on the bottom-left
wall of the PLC control enclosure.

To reduce the possibility of interconnection, additional
requirements exist for the separation of intrinsically safe
and non-intrinsically safe circuits. Exceptions to this rule
may be found in NEC Section 504-30(A)(1) and (2).

Separation by distance:

• The distance between intrinsically safe fi eld wiring
terminals and non-intrinsically safe fi eld wiring termi-
nals shall be a minimum 8 inches.

• The distance between intrinsically safe fi eld wiring
terminals and non-intrinsically safe fi eld circuits shall
be a minimum 5 inches.

• The distance between intrinsically safe fi eld wiring
terminals and non-intrinsically safe fi eld circuits and
wiring shall be a minimum 5 inches.

• The distance between intrinsically safe fi eld wiring
terminals and non-intrinsically safe internal wiring
shall be a minimum 2 inches.

1 – 6

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 1 • General Information

VFD Installation Recommendations

• All wiring to and from the Variable Frequency Drive
(VFD) starter shall conform to the National Fire
Protetcion Association 70 (NFPA-70), local codes and
the manufacturer’s guidelines and specifi cations.

• Thoroughly read the manufacturer’s VFD installation
and instruction manuals.

• In the event of a code and manufacturer recom­mendation confl ict, always use the more stringent
standard.

• Only use an inverter duty rated motor built to NEMA
MG1 PART 30 & 31.

• Always used copper conductors to feed the VFD
starter and motor. Use cable with thermoset insula­tion such as XLPE or XHHW-2 from the VFD to motor.

• It is preferred to use VFD cable, service wire company
or equal, between the VFD and the motor per manu­facturer’s instructions.

• It is preferred to use continuous metal conduit to the
VFD starter to the motor.

• If non-metallic conduit is used, VFD cable must be
used.

• If using VFD cable in metal conduit, the metal con­duit must be insulated at the motor, so that the metal
conduit is not a continuous run.

• Always use fl exible metallic liquid-tight conduit to
feed the motor from metallic conduit.

• Grounding conductor must run from the VFD ground
terminals directly to the motor conduit box. Always
use proper grounding techniques (Star Method) and
sized according to the NFPA 70 NEC.

• Always use bonding bushings on all conduit ends,

• Always use bonding bushings on all conduit ends,
with proper size braided copper cable bonded to the
starter panel.

• All grounding and bonding conductors and lugs must
terminate on bare metal and not to painted surfaces.

• Always use a minimum of 3% impedance line reactor
such as MTE or equal.

• Where the cables to the motor are longer than 50’,
always use a load reactor (customer must provide
Vilter with cable lengths from feeder to starter and
from starter to motor).

• Where the cables to the motor are longer than 500’,
always use a DV/DT load fi lter (customer must pro-
vide Vilter with cable lengths from feeder to starter
and from starter to motor).

• Where the cables to the motor are longer than 1000’,
always use a sine fi lter (customer must provide Vilter
with cable lengths from feeder to starter and from
starter to motor).

• Line and load conductors must be separated, as
much as the starter cabinet will allow, and cannot be
in the same conduit or cable chase.

• By no means shall power and control cables run in
parallel - cables must be separated, as much as the
starter cabinet will allow, and cannot be in the same
conduit or cable chase.

• For analog signals, use twisted shielded control cable
rated for 600V.

• When a generator is feeding a VFD starter, use a 5%
line reactor.

• Some countries require RFI/EMI fi lters -- please con-
sult country codes and standards.

• As an insurance policy against motor shaft currents,
use a split ring bearing protection ring on the motor
shaft with the non-load bearing insulated.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

1 – 7

1 – 8 / Blank

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 2 • Operational Descriptions

Overview

The following are typically controlled and monitored on
all blower packages:

• Suction Pressure (Blower) – Pressure of the gas mea­sured at the inlet of the blower.

• Discharge Pressure (Blower) – Pressure of the gas at
the outlet of the blower.

• Suction Temperature – Temperature of the gas mea­sured at the inlet of the blower.

• Discharge Temperature – Temperature of the gas at
the outlet of the blower.

• Main Motor Amperage – Current draw by the main
motor.

• Blower Motor Speed (Can control up to 4 blowers)

• Selectable groups of setpoints for varying operating
conditions

The following are additional software controls available
that are native to most blower packages controlled by
the PLC:

• Monitoring of Instrument Data, Alarms, Trips, and
Machine Status by DCS/Central Controller

• Blower Capacity suction or discharge pressure con­trol setpoint from DCS/Central Controller

• Control of Individual Blower speeds from DCS/Central
Controller

• Capacity pressure control on External Pressure
Transducer data from DCS/Central Controller

• Control of Local/Remote from DCS/Central Controller

• Local and Remote Starting and Stopping of the
Individual Blower Units

The following are optional blower unit and package
items that can be controlled or monitored:

• Aftercooler

• Air Cooled Step Type

• Air Cooled VFD Type

• Water Cooled

• Inlet Scrubber

• Pressure Drop across vessel

• Condensate Drain

• Low/High Level Safety Switches

• Outlet Scrubber

• Pressure Drop across vessel

• Condensate Drain

• Low/High Level Safety Switches

• Discharge Recycle Valve

The following are optional blower unit-specifi c items
that can be controlled or monitored:

• Main Motor Winding Temperatures

• Main Motor Bearing Temperatures

• Oil Pressure Safety Switch

• Air Cooled Oil Cooler Fan

• External Electric Oil Pump

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

2 – 1

Section 2 • Operational Descriptions

Operational Descriptions and
Diagrams

CONFIGURATION OF THE BLOWER PACKAGE

The Blower package PLC can control up to 4 blowers.
The blowers can be independently confi gured to run on
a fi xed speed setpoint, PID Control (variable speed), or
taken out of service:

• Fixed Speed: In auto mode, individual blowers can be
confi gured to run on 1 of 4 fi xed speeds.

• Variable Speed: The individual blower’s speed will
be controlled by a PID controller to hold a suction or
discharge pressure setpoint. If multiple blowers are
confi gured to run on PID control, all will run off of a
common speed command from the PID controller.

• Out of Service: Individual blowers may be taken out
of service for demand considerations or mainte­nance. When a blower is out of service, alarms, trips,
and status messages specifi c to that blower will not
be generated.

Additionally, individual blowers may be enabled and dis­abled “on the fl y,” either locally or remotely (by commu-
nications) without having to take them out of service.

Functions such as anti-recycle, and selected alarms and
trips are blower specifi c, meaning if active, they apply
only to the affected blower. This way if one blower trips
or is in anti-recycle, the other blowers are allowed to run.

At start, the blowers may be confi gured to start offset
from each other, to lessen the burden on the electrical
infrastructure due to motor inrush.

STARTING OF THE BLOWER/PERMISSIVES

To run the blower package, it must me started from the
“Start Menu” screen on the control panel HMI. Pressing
“Unit Start” in the “Start Menu” screen will initiate a start
if all permissives to initiate a start are met. To initiate a
start, the following conditions must be met:

• Control Power is ON (Emergency Stop button is not
pressed and Master Control Relay is energized, indi­cated by pilot light on front of panel)

• Blower Confi guration is valid

• No Active General Trips (trips that apply to the whole
blower package)

NOTE

If an individual blower trips, in order to restart blower, it

must fi rst clear trip condition and be re-enabled locally

at the control panel.

When a start is initiated, the blower package will start if
all permissives to run are met. If all permissives to run

are not met, the control will wait in a “standby” mode
until all conditions to run are satisfi ed. Any condition
that the control is waiting on is annunciated on the over­view and menu screens and logged in the Event List. For
the blowers to start running, the following must be met:

• Control Power is ON (Emergency Stop button is not
pressed and Master Control Relay is energized, indi­cated by pilot light on front of panel)

• No Active General Trips

• Blower Package start has been initiated by pressing
“Unit Start” in the “Start Menu” screen.

• Remote Permissive input is ON

• Soft run permissive from the DCS/Central Controller
is ON (if control by communications selected)

• Blower Anti-Recycle Timer is not active (specifi c to
each blower – each blower has its own anti-recycle
function.)

• No Blower-Specifi c Trips Active (specifi c to each
blower)

ANTI-RECYCLE

After a blower motor stops, it is not allowed to re-start
again for a settable time. This is to protect the blower
motor. If the Anti-Recycle timer is active, a banner will
appear next to the specifi c blower on the main screen
that shows the remaining time. If a start is initiated,
the blower state indicator will indicate “Standby” until
the Anti-Recycle timer is done. If all other permissives
are met, the blower will re-start when its anti-recycle
timer expires. In multiple-blower applications, the anti­recycle function is blower specifi c – one or more blowers
may be in anti-recycle without affecting the operation of
other blowers on the package.

AUTOMATIC SPEED CONTROL

For blowers that are confi gured to run on PID speed con-
trol, a PID controller will adjust the speed of the blowers
to hold a pressure set point. Two control methods are
available:

• Discharge Pressure Control: Blower increases speed
to increase discharge Pressure to desired setpoint

• Suction Pressure Control: Blower increases speed to
lower suction pressure to desired setpoint

Any blowers confi gured to run on PID speed control re-
ceive the same speed command from the PID control­ler. Blowers confi gured to run on fi xed speed control will
maintain their fi xed speed set point. Variables that fac-
tor in to the automatic speed control are the following:

• Target pressure – the desired suction or discharge
pressure the blower package will try to maintain.

2 – 2

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 2 • Operational Descriptions

• Deadband – Range above and below target pressure
where no speed adjustment will be made.

• Proportional Gain (Kp) – Proportional Term of the PID
equation

• Integral Gain (Ki) – Integral term of the PID equation

• Derivative Gain (Kd) – Derivative Gain of the PID
equation.

OPERATING MODES

The speed control of the blower package can be confi g-
ured to operate in several ways, depending on the needs
of the site. This mode selection is made at the “Start
Menu” screen. There are four basic modes, described
below:

• Local-Auto: The blower controller will adjust the
speed of the blowers to maintain the target pressure
set point. The target pressure setpoint is set on the
local HMI. Blowers will run off of the PID controller’s
speed command or fi xed speed set point, according
to how the individual blowers are confi gured.

• Local-Manual: The operator is in control of the indi­vidual blower speeds from the local HMI. When in
Local-Manual mode, the operator controls the speed
of each blower by adjusting the manual speed set
points on the blower overview screen.

• Remote-Auto: The blower controller will adjust the
speed of the blowers to maintain the target pressure
set point. Blowers will run off of the PID controller’s
speed command or fi xed speed set point, according
to how the individual blowers are confi gured. The tar-
get pressure setpoint is defi ned by the DCS/Central
Controller via communications. (NOTE: Control by
Communications must be enabled to use this mode.)

• Remote-Manual: Individual blower speed commands
are controlled by a DCS or Central Controller via com­munications. (NOTE: Control by Communications
must be enabled to use this method.)

In any of the above modes, all local alarms and trips will
still apply.

For safety reasons, remote mode is only enabled if
Control by Communications is enabled.

In the event that the communications link between the
blower PLC and the central controller/DCS is lost, the ac­tion taken is selectable from the Confi guration screen.
The machine will Trip or revert to Local mode and con­tinue to run depending on the selection.

The blower PLC can be remotely commanded to Local or
Remote Mode if Control by Communications is enabled.

LOAD LIMITS AND FORCED UNLOADING

Reference example, Figure 2-1

To protect the blower package and process, the control­ler will inhibit the blower from increasing speed or force
it to decrease speed if certain variables get outside of set
ranges. Load limits and forced unloading will also affect
blowers that are confi gured to PID speed control. The
load limiting variable depends on what control mode the
blower package is in.

• In Discharge Pressure Control, the load limiting will
be controlled by suction pressure.

• In Suction Pressure Control, the load limiting will be
controlled by discharge pressure.

Three set points are used to control load limits and
forced unloading:

• Inhibit Loading: when this setpoint is reached, the
blower will not be allowed to increase speed

• Unload at: when this setpoint is reached, the blower
motor will decrease speed by a settable rate (forced
unload) until the “Unload To” setpoint is reached.

• Unload To: this is the setpoint at which the blower
motor will stop decreasing speed from a forced un­load condition.

When a load limit or forced unload condition is active it
will be annunciated in the status banner on the overview
and menu HMI screens, and will also be logged in the
event list.

SAFETIES

The blower controller continuously monitors opera­tional and process data and annunciates an alarm and/or
stops the machine if any condition becomes abnormal.
Two levels of safeties exist when an abnormal condition
is detected.

• Alarm: If active, alarms are annunciated on the blow­er HMI. When activated, a popup screen showing the
date and time of the alarm and alarm message will
appear. Alarms are also logged in the Event List. An
alarm serves only as a warning to the operator; if an
alarm is active the machine is still allowed to run.

• Trip: If active, trips will shut the machine down or not
allow the blower to start. Trips are annunciated on
the blower HMI. When activated, a popup screen
showing the date and time of the trip and trip mes­sage will appear. Trips are also logged in the Event
List.

Alarms and Trips may be general or blower-specifi c. A
general trip will shut down the entire blower package,
a blower-specifi c trip will only shut down the affected

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

2 – 3

Section 2 • Operational Descriptions

blower. If a blower shuts down due to a blower-specifi c
trip, other blowers that do not have active trips will be
allowed to run.

The “Alarm Reset” pushbutton on the overview screen
will reset any active alarms or trips if the abnormal condi­tion has been removed.

For a comprehensive list of alarms and trips and possible
causes, see the troubleshooting guide in this manual.

The “Alarm Reset” pushbutton on the overview screen
will reset any active alarms or trips if the abnormal

LOW SUCTION PRESSURE

INHIBIT

LOAD

FORCE

UNLOAD TO

A

condition has been removed.

For a comprehensive list of alarms and trips and possible
causes, see the troubleshooting guide in this manual.

D

C

FORCE

UNLOAD AT

FORCE

UNLOAD AT

FORCE

UNLOAD TO

INHIBIT

LOAD

SUCTION

PRESSURE

B

(A) CAPACITY SLIDE WILL NOT INCREASE
(B & C) CAPACITY SLIDE WILL DECREASE UNTIL PRESSURE REACHES “C”
(D) BLOWER SPEED MAY INCREASE

HIGH DISCHARGE PRESSURE

B

C

A

D

2 – 4

(A) CAPACITY SLIDE WILL NOT INCREASE
(B & C) FORCED UNLOAD UNTIL DISCHARGE PRESSURE/AMPS REACHES “C”
(D) BLOWER SPEED ALLOWED TO INCREASE

DISCHARGE

PRESSURE

Figure 2-1. Operational Diagram - Load Limits / Forced Unloading (Example)

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 2 • Operational Descriptions

EMERGENCY STOP

Reference Figure 2-2

The Emergency Stop circuit in the blower control pan­el energizes the Master Control Relay, which provides
power to PLC outputs that control actuators, heaters,
motor starters, valves, etc. The Master Control Relay
may be energized by pressing the “Control Power On”
illuminated pushbutton on the door of the blower con­trol panel. When the Master Control Relay is energized,
the “Control Power On” pushbutton will illuminate. The
following conditions must be satisfi ed to energize the
Master Control Relay:

• Emergency Stop pushbutton on the door of the blow­er control panel must be pulled out.

• Any additional Emergency stops or safety devices
tied in to the Emergency Stop circuit must be reset.

• The blower PLC must be booted up and operational.

• The 24-volt DC power supplies in the blower control
panel must be powered up and OK.

SUPPLEMENTAL BLOWER MOTOR PROTECTION

In the event that the controller detects a blower motor
running when it is not being commanded to run by the
controller, the controller will energize a blower-specifi c
supplemental shutdown output. This output can be
used to control a shunt trip, under-voltage release, iso­lation contactor, or other safety power removal device.

Figure 2-2. Control Panel Master Power and Emergency Stop Electrical Circuit

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

2 – 5

Section 2 • Operational Descriptions

AIR COOLED OIL COOLER FAN

If installed, the air-cooled oil cooler fan starts with the
blower motor and runs as long as the blower motor is
running.

EXTERNAL ELECTRIC OIL PUMP

If installed, the external electric oil pump starts with the
blower motor and runs as long as the blower motor is
running.

OIL PRESSURE SAFETY SWITCH

If installed, the oil pressure safety switch will shut down
the blower if oil pressure is lost.

AIR COOLED AFTERCOOLER – STEP TYPE

If installed, the step type air-cooled aftercooler is a heat
exchanger that uses multiple fans to remove heat from
the gas discharged from the blowers. The number of
fans that run is determined by the gas temperature at
the outlet of the aftercooler.

The controller starts and stops fans in a sequence to con­trol the gas temperature at the outlet of the aftercool­er. When the aftercooler outlet temperature exceeds

the desired temperature plus a deadband, fans will be
turned on after a time delay to add more cooling. When
aftercooler outlet temperature drops below the desired
temperature minus a deadband, fans will be turned off
after a time delay.

• When the blower package is stopped, all aftercooler
fans are turned off.

• When the blower package is running and the after­cooler outlet temperature rises above the “Start
Aftercooler At” temperature set in the “Step Type
Aftercooler Setpoints” screen, the fi rst fan (or group
of fans) will start.

• When the blower package is running and the after­cooler outlet temperature is above the deadband, a
fan (or group of fans) will start each time through the
“Step Dwell Time.”

• When the blower package is running and the after­cooler outlet temperature is below the deadband, a
fan (or group of fans) will stop each time through the
“Step Dwell Time.”

• Once started, the fi rst fan or group of fans will remain
running until the blower stops.

TARGET

START

2 – 6

TEMPERATURE OR
PRESSURE

STEP #

FANS TURNING ON FANS TURNING OFF

Figure 2-3. Operational Diagram - Air Cooled Aftercooler (Step Type)

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 2 • Operational Descriptions

AIR COOLED AFTERCOOLER – VFD TYPE

If installed, the VFD type air cooled aftercooler is a heat
exchanger that uses one or more fans running on a VFD
to remove heat from the gas discharged from the blow­ers. The VFD speeds up or slows down the fan motor to
control the amount of cooling done by the aftercooler.

A PID controller adjusts the speed of the fan(s) to main­tain the outlet gas temperature of the aftercooler. When
the aftercooler outlet temperature exceeds the desired
temperature plus a deadband, the fan(s) will increase
speed to add more cooling. When aftercooler outlet
temperature drops below the desired temperature mi­nus a deadband, the fan(s) will decrease speed.

• When the blower package is stopped, the aftercooler
fan(s) will stop.

• When the blower package is running and the gas af­tercooler outlet temperature rises above the “Start
Aftercooler At” set in the “VFD Type Aftercooler
Setpoints” screen, the fan(s) will start at a settable

minimum speed.

• When the blower package is running and the after­cooler outlet temperature is above the deadband,
the PID controller will increase fan speed.

• When the blower package is running and the after­cooler outlet temperature is below the deadband,
the PID controller will decrease fan speed.

Figure 2-4. Operational Diagram - Air Cooled Aftercooler (VFD Type)

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

2 – 7

Section 2 • Operational Descriptions

WATER COOLED GAS AFTERCOOLER

If installed, the water-cooled gas aftercooler is a heat ex­changer that uses a modulating valve to control cooling
water fl ow to remove heat from the gas discharged by
the blowers. The valve position is adjusted to control the
amount of cooling done by the aftercooler.

A PID controller adjusts the opening degree of the
modulating valve to maintain a desired temperature at
the outlet of the gas aftercooler. When the aftercooler
outlet temperature exceeds the desired pressure plus a
deadband, the valve will open further to add more cool­ing. When aftercooler outlet temperature drops below
the desired temperature minus a deadband, the valve
will begin to close.

• When the blower package is stopped, the valve will
be commanded to 0% open (full close).

• When the blower package is running and the af­tercooler out temperature rises above the “Open
Valve At” setpoint in the “Water Cooled Aftercooler
Setpoints” screen, the valve will open to a settable
minimum position.

• When the blower is running and the aftercooler out­let temperature is above the deadband, the PID con­troller will increase the valve opening degree.

• When the blower is running and the aftercooler out­let temperature is below the deadband, the PID con­troller will decrease the valve opening degree.

2 – 8

Figure 2-5. Operational Diagram - Water Cooled Gas Aftercooler

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 2 • Operational Descriptions

GAS SCRUBBERS

A gas scrubber (or knockout drum) is a vessel with a vane
pack and/or coalescing elements installed to remove
moisture and other contaminants from the gas stream.
Gas scrubbers may be installed on the suction side or
discharge side of a blower package (if an aftercooler is
used, the scrubber is installed downstream of the after­cooler). A condensate pump or solenoid valve drains ac­cumulated moisture from the vessel.

Gas scrubbers include the following devices:

• Pressure transducers on the inlet and outlet of the
vessel – used to measure pressure drop across the
demister pad or coalescing elements to help deter­mine when to clean or replace.

• Level switches to monitor the condensate level:

• LSH (High Level) – when liquid level reaches the
LSH level switch, an alarm is annunciated on the
blower HMI.

• LSHH (High High Level) – when liquid level reaches
the LSHH level switch, an alarm or trip is annunci­ated on the blower HMI. The alarm or trip action
is confi gurable depending on the site and location

of the vessel. If trip action is selected, the blower
will shut down if the LSHH is activated. Typically
the purpose of the LSHH is to alarm or shut down
the blower package to prevent bringing liquid into
the blower suction.

• LSLL (Low Low Level) – when liquid level drops
below the LSLL level switch, an alarm or trip is an­nunciated on the blower HMI. The alarm or trip
action is confi gurable depending on the site and
location of the vessel. If trip action is selected,
the blower will shut down if the LSLL is activated.
Typically the purpose of the LSLL is to detect if the
liquid seal is lost to prevent introducing gas into
the condensate drain system.

• Condensate Drain System:

• A drain pump or solenoid valve will turn on when
the liquid level in the scrubber reaches the “Cutin”
level switch.

• The drain pump or solenoid valve will turn off
when the liquid level in the scrubber drops to the
“Cutout” level switch.

• Dual pumps may be used. Selection of Pump A or
B is made in the Confi guration screen.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

2 – 9

Section 2 • Operational Descriptions

DISCHARGE RECYCLE VALVE

If installed, the discharge recycle valve is a motorized
or air actuated valve that recycles discharge gas back to
the suction of the blower package. The valve acts as a
regulator, opening to maintain the set pressure in the
discharge line.

A PID controller adjusts the opening degree of the valve
to maintain a desired pressure on the high pressure side
of the valve. When the recycle control pressure exceeds
the desired pressure plus a deadband, the valve will start
to open to recycle high pressure gas back to suction.

DISCHARGE

PRESSURE

100

0

DISCHARGE

RECYCLE

SETTING

BLOWER

CONTROL

TARGET

DISCHARGE

RECYCLE VALVE

POSITION (% OPEN)

Figure 2-6. Operational Diagram - Discharge Recycle Valve

2 – 10

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 3 • Overview Screens

Blower and System Overview Screens

The blower and system overview screens shows blower
status, confi guration, any active alarms or trips, and live
process data. The blower and/or process are displayed in
a format similar to a P&ID diagram with live process data
shown on the screen.

From the blower and system overview screens, all other
screens are accessed by pressing the “Main Menu” goto
screen button in the lower right of the screen. The sys­tem overview display is accessed from the blower over­view screen and vice-versa, if a system overview screen
is displayed.

Figure 3-1. Basic Blower Package Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

3 – 1

3 – 2 / Blank

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 4 • HMI Navigation

Main Menu Screen

HMI screens are accessed by using the navigation but­tons on each screen. When the HMI boots up, the
blower overview screen is displayed by default. The HMI
Screens are divided into groups, all of which are acces­sible from the Main Menu Screen.

The Main Menu Screen allows the user to view basic
blower confi guration, status, active alarms and trips, as
well as navigate to confi guration, control, calibration,
and diagnostics screens.

An electronic copy of the blower PLC manual is accessed
from the Main Menu Screen.

Figure 4-1. Main Menu Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

4 – 1

Section 4 • HMI Navigation

HMI Security

Some items and screens on the HMI require a login to be
viewed or changed.

Login accounts are described below, each with its de­fault password and level of access.

DEFAULT

• This is the user account that is active when the HMI
boots up or the user logs out of another user account.

• Permissions:

• May start and stop the machine

• May change Remote-Local and Auto-Manual
modes

• May view setpoints, calibration data, and
diagnostics

OP1, OP2, OP3, OP4, OP5

• These user accounts are intended for operators.

• Default Password: 1

• Permissions

• May start and stop the machine

• May change Remote-Local and Auto-Manual
modes

• May Operate the machine in Manual mode

• May view setpoints, calibration data, and
diagnostics

• May change setpoints

SUPER

• This user account is intended for site supervisors,
managers, and superintendents.

• Default Password: 1

• Permissions

• May start and stop the machine

• May change Remote-Local and Auto-Manual
modes

• May Operate the machine in Manual mode

• May view setpoints, calibration data, and
diagnostics

• May change setpoints

• May force Discrete and Analog outputs on the PLC

• May make changes to machine confi guration
selections

LOGGING IN

To log on, press the “Log On” button. The “Log On” but­ton is located in the Upper-Right corner of most screens,
and in the lower right corner of the menu screen. The
login popup screen will appear, shown in Figure 4-3. Enter
User Name and password using the popup keyboard.

It is recommended to log out when fi nished. Every login
is recorded in the blower control’s event list. After 10
minutes of inactivity, the HMI will automatically log out
the current user.

4 – 2

Figure 4-2. Login Popup Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 4 • HMI Navigation

Figure 4-3. Login Screen Keyboard

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

4 – 3

4 – 4 / Blank

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 5 • Configuration - Supervisor Level

Confi guration Screen - Supervisor Level

NOTE

Some screens may have inverted colors for ease of

readability.

Most of the confi guration that is specifi c to the blower
package is completed at the factory and not accessible
to the user. The options that may be confi gured by the

user are included on this screen. To change option se­lections, press on the list selector and use the up, down,
and enter buttons on the lower side of the screen.

Figure 5-1. Confi guration Screen - All Options Shown (Supervisor Level)

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

5 – 1

Section 5 • Configuration - Supervisor Level

DATE AND TIME

Allows the Real Time Clock in the PLC to be set. Pressing
“Set Date and Time” will bring up the “Set Date and
Time” popup screen.

• Date and Time must be set in 24-hour format.

• Pressing “Set Date and Time” will set the PLC time
clock.

• The HMI time clock will automatically synchronize to
the PLC time clock.

Figure 5-2. Set Date/Time Pop-Up Screen - Supervisor Level

REMOTE OPERATION

For the blower control to accept commands from a
DCS or Central Controller, Control by Communications
must be enabled. For more details on remote opera­tion, see Section 12, Communication with DCS/Central
Controller.

• Control by Communications

• If enabled, allows a central controller/DCS to send
commands to the blower PLC

• If disabled, allows a central controller/DCS to read
data only.

• Communications Watchdog and Communication
Fault Action

• The settable watchdog time defi nes the amount
of time a loss in communications can be detected
before triggering a communication fault

• Action taken on communication fault is selectable:

• Alarm and Revert to local mode – The blower
controller will generate an alarm, and change
mode to local-auto. The machine will contin­ue to run (if running) in local mode.

• Trip Machine – Communication Fault will shut
the machine down.

5 – 2

MOTOR RTDs

Selects if Motor Winding and Bearing Temperatures are
being monitored by the controller.

INLET / OUTLET SCRUBBER PUMP A / B

If the inlet and/or outlet scrubbers include dual conden­sate pumps, this selection determines which pump is
active.

CHANGE PASSWORD

Pressing the “Change Password” button opens the
“Change Password” pop-up screen, see Figure 5-3 To
change a password on an account, the user must be
logged in under that account.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 5 • Configuration - Supervisor Level

Figure 5-3. Change Password Pop-Up Screen - Supervisor Level

PANELVIEW CONFIGURATION

Pressing the “Panelview Confi guration” button closes
the blower control application running on the HMI and
opens the Factory Talk View ME Station confi guration
screens.

INITIAL RUNNING DATA

Pressing the “Initial Running Data” Button opens the
Initial Running Data Screen which shows baseline
data logged when the blower was new. See Section X
“Diagnostics Screens” for more information.

DEVICE NAMES

Pressing the “Device Names” button navigates to the
Defi ne Device Names screens. See “Defi ne Device
Names” later in this section for more information.

BACK TO MENU

Pressing the “Back to Menu” button navigates back to
the main menu screen.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

5 – 3

Section 5 • Configuration - Supervisor Level

Editing Device Names

The “Device Names” group of screens allows a user
logged in as “SUPER” to edit names shown on the screen
identifying blower unit and package equipment, instru­mentation, and alarm and trip designations. To edit the
text fi elds in this group of screens, press on the string in-
put button and use the popup keyboard to edit the text.

Typically, the device names entered in this group of
screens are the designations for each device, instru­ment, or alarm that relate it back to the P&ID diagram.

The “Device Names” group of screens is divided into
three sections, see Figure 5-3.

DEVICES AND VESSELS

In Figure 5-4, this screen the user may edit device names
shown on the screen for devices, vessels, and equipment
installed on the blower package.

The user may navigate to other screens within the
“Defi ne Device Names” group by using the navigation
buttons on the right side of the screen.

5 – 4

Figure 5-4. Defi ne Device Names - Devices and Vessels (Supervisor Level)

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 5 • Configuration - Supervisor Level

INSTRUMENTATION

In Figure 5-5, this screen allows the user to edit device
names shown on the screen for instrumentation in­stalled on the blower unit or package.

Figure 5-5. Defi ne Device Names - Instrumentation (Supervisor Level)

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

5 – 5

Section 5 • Configuration - Supervisor Level

ALARM AND TRIP

In Figure 5-6, this screen allows the user to edit the alarm
and trip designation text that appears in the alarm and
trip banners, alarm pop-up screen, and event list.

In addition, messages for 5 user-defi ned alarms and trips
may be defi ned on this screen.

5 – 6

Figure 5-6. Defi ne Device Names - Alarm and Trip 1 (Supervisor Level) (1 of 2)

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 5 • Configuration - Supervisor Level

Figure 5-7. Defi ne Device Names - Alarm and Trip 2 (Supervisor Level) (2 of 2)

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

5 – 7

5 – 8 / Blank

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 6 • Instrument Calibration

Calibration Main Screen

NOTE

Some screens may have inverted colors for ease of

readability.

Pressing the “Instrument Calibration” navigation button
on the menu screen opens the instrument calibration
group of screens. This group of screens allows the user
to view and edit calibration data for specifi c instruments
installed on the blower unit or package.

From the main menu, pressing the “Instrument

Calibration” button navigates to the calibration over­view screen. The calibration overview screen shows
information related to all instruments installed on the
blower unit or package, including their raw values, base
units (used internally in the program) and as displayed.
Calibration of specifi c instruments is accessed using the
navigation buttons on the right side of the screen.

Figure 6-1. Instrument Calibration Overview Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

6 – 1

Section 6 • Instrument Calibration

Pressure Calibration Screen

In Figure 6-2, the temperature calibration group of
screens allows the user to change the pressure units
displayed on the screen as well as calibrate pressure
instruments.

Pressure units are specifi c to individual pressure instru-
ments. Changing the pressure display units for a trans­ducer also converts all pressure setpoints related to that
transducer to the new selected units.

The following pressure units are available for display:

• PSIG (Pounds/square inch gage)

• PSIA (Pounds/square inch absolute)

• kPa[A] (Kilopascals absolute)

• kPa[G] (Kilopascals gage)

• kg/cm2[A] (Kilograms/square centimeter absolute)

• kg/cm2[G] (Kilograms/square centimeter gage)

• inHg (inches of mercury) – Vacuum is shown in inHg,
positive pressure is shown in PSIG

• inWC (gage)

• Bar[A] (absolute)

• Bar[G] (gage)

• Torr[A] (absolute)

• Torr[G] (gage)

6 – 2

Figure 6-2. Pressure Calibration Screen - 1 of 3

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 6 • Instrument Calibration

CALIBRATE PRESSURE INSTRUMENT

To calibrate a pressure instrument, proceed with the fol­lowing steps:

1. Select the units that the transducer is calibrated
in. For example, for a transducer calibrated 0-200
PSIA, the transducer units selected shall be ‘PSIA.’
For a transducer calibrated -30inHg to 30PSIG, the
transducer units selected shall be “inHg.”

2. Select the units that the pressure will be displayed
in on the HMI.

3. Enter the raw mA range (typically 4-20mA)

4. Enter the Span of the instrument. For a 0-200 PSIA
transducer, Enter “0” for XDCR Min and “200” for
XDCR Max.

CALIBRATE TRANSDUCER TO A KNOWN PRESSURE

There are two options when calibrating a transducer to
a known pressure.

NOTE

Differential pressures does not require calibration,

but the differential pressure display units can be

selected.

OPTION 1

1. Open the pressure transducer to a known pressure.

2. Adjust the Offset value until the “Displayed” value
is equal to the known pressure.

OPTION 2

1. Open the pressure transducer to a known pressure.

2. Enter the known pressure (in transducer units) into
“Target Value.” The controller will calculate an off­set based on the known pressure that was entered.

Figure 6-3. Pressure Calibration Screen - 3 of 3

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

6 – 3

Section 6 • Instrument Calibration

Temperature Calibration Screen

The temperature calibration group of screens allows the
user to change the temperature units displayed on the
screen as well as calibrate temperature instruments.

Four Temperature units are available for display:

• Fahrenheit

• Celsius or Centigrade

• Kelvin (Absolute Celsius temperature scale)

• Rankine (Absolute Fahrenheit temperature scale)

Temperature units can be changed by touching on the
list selector in any temperature calibration screen and
using the up, down, and enter buttons. Changing the
temperature display units also converts all temperature
setpoints to the new selected units.

CALIBRATE TEMPERATURE INSTRUMENTS

There two types of temperature instruments that can be
calibrated, RTDs and temperature transmitters.

To calibrate an RTD, proceed with the following steps.

NOTE

Typically, RTDs are very accurate and do not require

calibration.

1. Expose the RTD to a known temperature (such as a
slurry of crushed ice and water).

2. Enter an offset so the displayed temperature is
equal to the known temperature.

To calibrate a temperature transmitter, proceed with
the following steps.

1. Enter the raw mA range (typically 4-20mA).

2. Enter the span of the transmitter in degrees
Fahrenheit. For a 32-392 Fahrenheit transmitter,
Enter “32” for XDCR Min and “392” for XDCR Max.

6 – 4

Figure 6-4. Temperature Calibration Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 6 • Instrument Calibration

Other Analog Device Calibration

The Other Analog Device Calibration Screen allows the
user to calibrate additional 4-20mA input devices.

4-20mA devices that can be calibrated:

• Main Motor Amperage

• Main Motor VFD Speed

CALIBRATE AN ADDITIONAL INSTRUMENT

To calibrate an additional instrument, proceed with the
following steps.

1. Enter the raw mA range (typically 4-20mA).

2. Enter the Span of the transmitter.

3. Enter minimum scale value in “XDCR Min” and full
scale value for “XDCR Max.”

Figure 6-5. Other Analog Calibration Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

6 – 5

6 – 6 / Blank

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 7 • Blower Configuration and Control Setpoints

Setpoints and Control Screens

The setpoint and control screens relate to the operation
and control of the blower. Process and operational set­points for the blower and other equipment are adjust­able within this group of screens.

CHANGING SETPOINTS

To change setpoints within the setpoint and control
screens, the user must be logged in. Setpoints that may
be adjusted by the logged in user appear as a white
button that shows the current value of the setpoint.
Setpoints that may not be adjusted by the logged in user
(or if no user is logged in) appear as text only and cannot
be changed.

Current Setpoint Value

Pressing on a numeric entry opens the numeric entry
pop-up screen, see Figure 7-1.

• In Figure 7-1, the upper left text shows the current

value of the setpoint.

• In Figure 7-1, the numeric entry pop-up screen, the

range of values above the numerical buttons is the
acceptable range that can be entered. If a value out­side this range is entered the HMI will not accept it.

• To enter a new setpoint, use the numerical keypad

and enter key.

• To close the numerical input pop-up screen without

changing the setpoint, push the “ESC” key.

Acceptable Range

Figure 7-1. Numeric Entry Pop-up Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

7 – 1

Section 7 • Blower Configuration and Control Setpoints

Blower Confi guration Screen

NOTE

Screens may have inverted colors for ease of

readability.

BLOWER CONFIGURATION

One of the following selections may be made for each
Blower:

• Out of Service: The blower will not run if selected.
Blower-Specifi c alarms and trips will not be generated.

• Preset Speed 1-4: The blower will run at the preset
speed. The preset speeds are settable on the Blower
Control Setpoints (Suction or Discharge Pressure)
screen.

• PID Speed Control: The blower will run at the speed
commanded from the Suction Pressure or Discharge
Pressure control PID algorithm. If multiple blowers
are run in PID Speed Control, they will all run at the
same speed.

CONTROL MODE

• Target Suction Pressure: This is the desired suction
pressure the blower will try to maintain.

• Upper and Lower Deadband: This is a range of pres­sures above and below the Target Suction Pressure.
Within this range, no capacity slide position adjust­ments will be made.

• Upper and Lower Proportional Band: This is a range
of pressures above and below the Target Suction
Pressure. Within this range, the controller will make
proportionally smaller adjustments to capacity slide
position.

SUCTION/DISCHARGE PRESSURE SOURCE

The suction and discharge pressure source determines
which instrument will be used to control the blower
speed PID algorithm and load limits. A valid pressure
source must be selected for both suction and discharge
pressure.

7 – 2

Figure 7-2. Blower Confi guration Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 7 • Blower Configuration and Control Setpoints

• If suction pressure control is selected, the selected
suction pressure source will control the blower speed
command, and the selected discharge pressure
source will control load limiting and forced unloading.

• If discharge pressure control is selected, the selected
discharge pressure source will control the blower
speed command, and the selected suction pressure
source will control load limiting and forced unloading.

ANTI-RECYCLE

After a blower motor stops, the anti-recycle function will
become active. The motor will not be allowed to re-start
until the anti-recycle time is up. The anti-recycle func­tion is blower specifi c: one blower in anti-recycle will not
affect the other blowers on the package. If the blower
package is started and a blower confi gured to run is in
anti-recycle, that blower will start once the anti-recycle
timer is up.

START UP

When multiple blowers are starting up, they start se­quentially and increase in order. The offset dwell time is
what determines the amount of delay between starting
each individual blower. The purpose of this function is
to reduce the load on the electrical infrastructure when
necessary. Setting this time to “0” means that all blow­ers confi gured to run will start at the same time.

In order to be able to start the blower package, the blow­er confi guration must be valid. For the blower confi gura-
tion to be valid, all of the following rules must be met:

• At least one blower must be in service (selected to
run in preset speed or PID Speed Control).

• The selected suction and discharge pressure source
must be valid based on the confi guration of the pack-
age. (Example: to select a header pressure transduc­er as a control source, the header pressure transducer
must be installed, to select a blower suction or dis­charge pressure transducer as a control source, that
particular blower must be in service.

Blower Control Setpoints - Suction Pressure

The Blower Control Setpoints page 1 (Suction Pressure)
screen appears when navigating to “Blower Control
Setpoints” from the menu screen when Suction Pressure
control is selected. Setpoints for desired suction pres­sure, PID Tuning, and Load Limits are accessible from
this screen. For more information and operational de­scriptions, see section 2 “Operational Descriptions.”

SUCTION PRESSURE CONTROL

• Target Suction Pressure: This is the desired suction
pressure the blower will try to maintain.

• Deadband: This is a range of pressures above and be­low the Target Suction Pressure. Within this range,
no speed adjustments will be made.

PID TUNING

• Loop Update Time: This is the cycle time of the PID
controller.

• Proportional Gain (Kp): This is the proportional con­stant of the PID calculation.

• Integral Gain (Ki): This is the integral constant of the
PID calculation.

• Derivative Gain (Kd): This is the derivative constant of
the PID calculation.

HIGH DISCHARGE PRESSURE LOAD LIMITS

• Inhibit Loading: Blower will not be allowed to increase
speed if Discharge Pressure rises above this setpoint.

• Unload At: Blower will begin continuously decreasing
speed if Discharge Pressure rises above this setpoint.

• Unload To: If forced unloading is active, the blower
will unload continuously until Discharge Pressure
reaches this setpoint.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

7 – 3

Section 7 • Blower Configuration and Control Setpoints

Figure 7-3. Blower Control Screen - Suction Pressure

7 – 4

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 7 • Blower Configuration and Control Setpoints

Blower Control Setpoints - Discharge Pressure

The Blower Control Setpoints page 1 (Discharge
Pressure) screen appears when navigating to “Blower
Control Setpoints” from the menu screen when
Discharge Pressure control is selected. Setpoints for
desired discharge pressure, PID Tuning, and Load Limits
are accessible from this screen. For more information
and operational descriptions, see section 2 “Operational
Descriptions.”

DISCHARGE PRESSURE CONTROL

• Target Discharge Pressure: This is the desired suction
pressure the blower will try to maintain.

• Deadband: This is a range of pressures above and be­low the Target Suction Pressure. Within this range,
no speed adjustments will be made.

PID TUNING

• Loop Update Time: This is the cycle time of the PID

controller.

• Proportional Gain (Kp): This is the proportional con­stant of the PID calculation.

• Integral Gain (Ki): This is the integral constant of the
PID calculation.

• Derivative Gain (Kd): This is the derivative constant of
the PID calculation.

LOW SUCTION PRESSURE LOAD LIMITS

• Inhibit Loading: Blower will not be allowed to increase
speed if Suction Pressure falls below this setpoint.

• Unload At: Blower will begin continuously decreasing
speed if Suction Pressure falls below this setpoint.

• Unload To: If forced unloading is active, the blower
will decrease its speed continuously until Suction
Pressure reaches this setpoint.

Figure 7-4. Blower Control Screen - Discharge Pressure

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

7 – 5

7 – 6 / Blank

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 8 • Alarm and Trip Setpoints

Alarm and Trip Setpoints

NOTE

Screens may have inverted colors for ease of

readability.

The blower controller continuously monitors opera­tional and process data and annunciates an alarm and/
or shuts the blower down if any condition becomes ab­normal. The alarm and trip points for some of the op­erational and process data are adjustable by the user in
the alarm and trip setpoints screens. The alarm and trip
setpoints are interlocked such that a low alarm may not
be set lower than a low trip, and a high trip may not be
set below a high alarm.

Actual values of the specifi c operational and process
data is shown in the column in the middle of the screen.
Setpoints are only shown for applicable alarm and trip
points.

Alarm and Trip Setpoints - Page 1

• Suction Pressure: Low Alarm and Low Trip setpoints
for suction pressure at the individual blower or head­er (if selected).

• Discharge Pressure: High Alarm and High Trip set­points for discharge pressure at the individual blower
or header (if selected).

• Discharge Temperature: High Alarm and High Trip
setpoints for blower discharge temperature.

• Motor Winding Temperature: High Alarm and High
Trip setpoints for temperature of the main motor
windings, if motor winding RTDs are installed.

• Motor Bearing Temperature: High Alarm and High
Trip setpoints for temperature of the main motor
bearings, if motor bearing RTDs are installed.

Figure 8-1. Alarm and Trip Setpoints Screen - 1 of 2

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

8 – 1

Section 8 • Alarm and Trip Setpoints

Alarm and Trip Setpoints - Page 2

• Motor Amps: High Alarm and High Trip setpoints for
blower motor amps.

• Inlet Scrubber Pressure Drop: High alarm setpoint for
pressure drop across the inlet scrubber.

• Outlet Scrubber Pressure Drop: High alarm setpoint
for pressure drop across the outlet scrubber.

• Main Motor FLA: Convenience calculation for motor
amp limits.

8 – 2

Figure 8-2. Alarm and Trip Setpoints Screen - 2 of 2

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 9 • Step and PID Device Control Screens

Aftercooler Screens

AFTERCOOLER (VFD TYPE) SETPOINTS

• Start Aftercooler Above: Defi nes the temperature the
aftercooler fans will come on at minimum speed.

• Target Aftercooler Outlet Temperature: Defi nes the
desired temperature of gas at the outlet of the after­cooler. The aftercooler fan speed will adjust to main­tain this temperature.

• Deadband: Range above and below setpoint where
the controller will not make adjustments to fan speed.

• PID Tuning: PID Calculations displayed to aid in tun­ing the PID loop.

• Loop Update Time: Defi nes the PID controller loop
time. The PID calculation will update every cycle of
the loop update timer.

• Proportional Gain (Kp): Defi nes the Proportional
Constant of the PID calculation.

• Integral Gain (Ki): Defi nes the Integral Constant of
the PID calculation.

• Derivative Gain (Kd): Defi nes the Derivative Constant
of the PID Calculation.

• Minimum Speed: Defi nes the minimum aftercooler
fan speed.

• Aftercooler VFD Force: Allows the user to manu­ally force the aftercooler fan(s) to a settable speed.
Activating the Aftercooler VFD Force pushbutton
will command the aftercooler fan(s) to go to the set
speed, and will override calculations from the PID
Controller.

Figure 9-1. Aftercooler (VFD Type) Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

9 – 1

Section 9 • Step and PID Device Control Screens

AFTERCOOLER (STEP TYPE) SETPOINTS

• Start Aftercooler Above: Defi nes the temperature the
fi rst aftercooler step will come on.

• Target Aftercooler Outlet Temperature: Defi nes the
desired temperature of gas at the outlet of the af­tercooler. The controller will cycle fans on and off to
maintain this temperature.

• Deadband: Range above and below setpoint where
the controller will not add or remove any steps.

• Step Dwell Time: Amount of time Aftercooler Outlet
Temperature must be outside the deadband to add
or remove a step.

• Aftercooler Fan Confi guration: Truth table that de-
fi nes which fan outputs are turned on in each step.

9 – 2

Figure 9-2. Aftercooler (Step Type) Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 9 • Step and PID Device Control Screens

WATER COOLED AFTERCOOLER SETPOINTS

• Open Valve Above: Defi nes the temperature the af-
tercooler water supply valve will open to minimum
position.

• Target Aftercooler Outlet Temperature: Defi nes the
desired temperature of gas at the outlet of the after­cooler. The aftercooler water supply valve position
will adjust to maintain this temperature.

• Deadband: Range above and below setpoint where
the controller will not make adjustments to water
supply valve positon.

• PID Tuning: PID Calculations displayed to aid in tun­ing the PID loop.

• Loop Update Time: Defi nes the PID controller loop
time. The PID calculation will update every cycle of
the loop update timer.

• Proportional Gain (Kp): Defi nes the Proportional
Constant of the PID calculation.

• Integral Gain (Ki): Defi nes the Integral Constant of
the PID calculation.

• Derivative Gain (Kd): Defi nes the Derivative Constant
of the PID Calculation.

• Minimum Valve Open: Defi nes the minimum water
supply valve position.

• Aftercooler Valve Force: Allows the user to manu­ally force the aftercooler water supply valve to a set­table position. Activating the Aftercooler Valve Force
pushbutton will command the aftercooler water sup­ply valve to go to the set position, and will override
calculations from the PID Controller.

Figure 9-3. Water Cooled Aftercooler Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

9 – 3

Section 9 • Step and PID Device Control Screens

Discharge Recycle Valve Screen

DISCHARGE RECYCLE VALVE SETPOINTS

• Target Recycle Control Pressure: Defi nes the pres-
sure at which the discharge recycle valve will begin
to open.

• Deadband: Range above and below setpoint where
the controller will not make adjustments to the re­cycle valve position.

• PID Tuning: PID Calculations displayed to aid in tun­ing the PID loop.

• Loop Update Time: Defi nes the PID controller loop
time. The PID calculation will update every cycle of
the loop update timer.

• Proportional Gain (Kp): Defi nes the Proportional
Constant of the PID calculation.

• Discharge Recycle Valve Force: Allows the user to
manually force the discharge recycle valve to a set­table position. Activating the Discharge Recycle
Valve Force pushbutton will command the discharge
recycle valve to go to the set position, and will over­ride calculations from the PID Controller.

9 – 4

Figure 9-4. Discharge Recycle Valve Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 9 • Step and PID Device Control Screens

Start Menu Popup Screen

Pressing “Start Menu” on the blower overview screen will
open the “Start Menu” popup screen. The “Start Menu”
screen allows the user to change operating modes and
start the blower package.

• Remote: Pressing the remote pushbutton puts the
blower control in remote mode. The remote mode
pushbutton will only be visible if the confi guration is
correct

• Local: Pressing the Local pushbutton puts the blower
control in local mode.

• Auto: Pressing the Auto pushbutton puts the blower
control in Auto mode.

• Manual: Pressing the Manual pushbutton puts the
blower control in Manual mode.

• Unit Start: Pressing the Unit Start pushbutton initi­ates a blower start.

For more information on operating modes, see the sec­tion on Operational Descriptions.

Figure 9-5. Start Menu Popup Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

9 – 5

9 – 6 / Blank

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 10 • Diagnostic Screens

IO/Comms Diagnostics Screen

COMMS DIAGNOSTICS AND I/O STATUS

NOTE

Some screens may have inverted colors for ease of

readability.

The IO/Comms Diagnostics Screen is divided into 3
sections.

• SYSTEM INFORMATION

• Shows basic information about the Blower PLC
panel: Vilter sales order number, Software revi­sion, IP addresses, hardware information, and
fi rmware revisions of blower PLC and HMI.

• BITS/REALS FROM DCS:

• Shows commands from a central controller or
DCS to verify communications setup with a cen­tral controller or DCS.

• LOCAL I/O STATUS

• Shows a graphic representation of the blower
PLC’s local I/O modules and the raw data specifi c
to each channel.

• Use the following rules to interpret the data:

• Discrete inputs and outputs: Green = ON

• Analog Inputs and outputs (4-20mA): The
number shown for a specifi c channel rep-
resents the signal in .001 mA. Ex: a value of
4000 indicates 4.000 mA.

• RTD Inputs: The number shown for a specifi c
channel represents the temperature reading
in Fahrenheit times 10. Ex: a value of 730 in­dicates 73.0 degrees Fahrenheit.

Figure 10-1. IO/Comms Diagnostics Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

10 – 1

Section 10 • Diagnostic Screens

Event List Screen

The event list is a running log of alarm, trip, and status
information. The event list shows the last 400 events
logged by the blower PLC, most recent is at the top of
the screen. Each event is logged with a time and date
stamp.

To scroll through past events, use the navigation buttons
at the bottom of the screen.

10 – 2

Figure 10-2. Event List Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 10 • Diagnostic Screens

Diagnostics Forced Outputs Screen

The force outputs screen allows a user logged in as
“SUPER” to force discrete and analog outputs to verify
operation of devices on the blower package. Outputs
that are available to force depend on the confi guration
for a specifi c blower machine or package.

• Pressing a force button forces ON the PLC output for
that particular device. If there is an associated ana­log output (speed or position command) the keyed
in value will be applied to that output. Pressing the
force button again removes the force.

• Pressing “Clear all Forces” removes all active forces.

Figure 10-3. Diagnostics Forced Output Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

10 – 3

Section 10 • Diagnostic Screens

Captured Data at Shutdown Screen

The captured data at shutdown screen shows process
and operational data at the time the blower shuts down.
Data from the last 5 shutdowns are logged. Each shut­down is given a time and date stamp. The most recent
shutdown is on the left.

10 – 4

Figure 10-4. Captured Data at Shutdown Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 10 • Diagnostic Screens

Initial Baseline Running Data Screen

The Initial Baseline Running Data screen shows data col­lected when the blower is fi rst started up. Vilter Service
Technicians or Engineers only may log this data. This is
to give a reference point for comparing operational and
process data to a baseline set of data collected when the
blower package was new.

Figure 10-5. Initial Baseline Running Data Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

10 – 5

10 – 6 / Blank

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Alarms & Trips

Process and Operational data of the blower unit is
continuously monitored by the blower PLC. If an ab­normal condition is detected, an alarm or trip will be
annunciated.

• Alarms

• Warns of an abnormal condition. Blower may
continue to run.

• Trips

• Blower will shut down if active.

Figure 11-1. Alarm/Trip/Status Bars (Main Menu Screen)

A scrolling display at the top of the overview and menu
screens shows all active alarms and trips, see Figure
11-1.

Trips are shown in the red banner, alarms are shown in
the yellow banner.

When a new alarm or trip is triggered, the alarm popup
screen will appear showing the most recent alarm or
trip, see Figure 11-2.

Figure 11-2. Alarm/Trip Popup Screen

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 1

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Alarm Listing

The following table shows all possible alarms and trips and possible causes. Some alarms and trips are application
specifi c, and do not apply unless a specifi c option is selected.

To reset alarms or trips press the “Alarm Reset” Button on the overview screen. If the condition is cleared, the alarm
will reset. If the condition is not cleared, the alarm will remain active.

Table 11-1. Alarm Listing

Alarm Message Cause(s) Notes

(A001) Alarm:

(A002) Alarm: PLC to Central Comms
Faulted

(A003) Alarm: Blower 1 VFD Comms
Faulted

(A004) Alarm: Blower 2 VFD Comms
Faulted

(A005) Alarm: Blower 3 VFD Comms
Faulted

(A006) Alarm: Blower 4 VFD Comms
Faulted

(A007) Alarm:

(A008) Alarm:

(A009) Alarm:

(A010) Alarm: Low Suction Header
Pressure

(A011) Alarm: High Discharge
Header Pressure

(A012) Alarm: Aftercooler VFD Fault Fault contact open on Aftercooler

(A013) Alarm: Aftercooler Fan
Starter Fault

(A014) Alarm:

(A015) Alarm: User Defi ned Alarm 1 User defi ned Alarm 1 Message Defi ned in "Device Names"

(A016) Alarm: User Defi ned Alarm 2 User defi ned Alarm 2 Message Defi ned in "Device Names"

(A017) Alarm: User Defi ned Alarm 3 User defi ned Alarm 3 Message Defi ned in "Device Names"

(A018) Alarm: User Defi ned Alarm 4 User defi ned Alarm 4 Message Defi ned in "Device Names"

(A019) Alarm: User Defi ned Alarm 5 User defi ned Alarm 5 Message Defi ned in "Device Names"

Loss of Communication with DCS/
Central - Settable Communications
Watchdog Timer Expired. (Alarm
and Revert to Local Selected on
Communication Failure.)

Loss of Communication with Blower
1 VFD.

Loss of Communication with Blower
2 VFD.

Loss of Communication with Blower
3 VFD.

Loss of Communication with Blower
4 VFD.

Suction Header Pressure drops
below "Suction Pressure" Low Alarm
Setpoint

Suction Header Pressure rises above
"Discharge Pressure" High Alarm
Setpoint

VFD

Aftercooler Fan is commanded
to run, running confi rmation not
received.

Watchdog Active if Control by
Communications is selected

Active if monitoring Suction Header
Pressure

Active if monitoring Discharge
Header Pressure

If controlling a VFD type aftercooler

If controlling a step-type aftercooler

Screens

Screens

Screens

Screens

Screens

11 – 2

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Alarm Message Cause(s) Notes

(A020) Alarm: Blower 1 - High
Discharge Temperature

(A021) Alarm: Blower 1 - High
Discharge Pressure

(A022) Alarm: Blower 1 - Low
Suction Pressure

(A023) Alarm: Blower 1 - High Phase
A Temperature

(A024) Alarm: Blower 1 - High Phase
B Temperature

(A025) Alarm: Blower 1 - High Phase
C Temperature

(A026) Alarm: Blower 1 - High ODE
Bearing Temperature

(A027) Alarm: Blower 1 - High DE
Bearing Temperature

(A028) Alarm: Blower 1 - High Motor
Amps

(A029) Alarm: Blower 1 - VFD Speed
Reference Fault

(A030) Alarm: Blower 1 - Oil Cooler
Fan Fault

(A031) Alarm:

(A032) Alarm:

(A033) Alarm:

(A034) Alarm:

(A035) Alarm:

(A036) Alarm:

(A037) Alarm:

(A038) Alarm:

(A039) Alarm:

(A040) Alarm: Blower 2 - High
Discharge Temperature

(A041) Alarm: Blower 2 - High
Discharge Pressure

Blower 1 Discharge Temperature
exceeds "Discharge Temperature"
High Alarm Setpoint

Blower 1 Discharge Pressure exceeds
"Discharge Pressure" High Alarm
Setpoint

Blower 1 Suction Pressure falls
below "Suction Pressure" Low Alarm
Setpoint

Phase A Motor Winding
Temperature exceeds Motor
Winding Temperature High Alarm
Setpoint

Phase B Motor Winding Temperature
exceeds Motor Winding
Temperature High Alarm Setpoint

Phase C Motor Winding Temperature
exceeds Motor Winding
Temperature High Alarm Setpoint

Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Alarm Setpoint

Opposite Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Alarm Setpoint

Blower 1 Motor Amps exceeds
"Motor Amps" High Alarm Setpoint

Blower 1 Actual Speed is not within
1% of commanded speed.

Blower 1 Oil Cooler Fan is command­ed to run, running confi rmation is
not received.

Blower 2 Discharge Temperature
exceeds "Discharge Temperature"
High Alarm Setpoint

Blower 2 Discharge Pressure exceeds
"Discharge Pressure" High Alarm
Setpoint

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if an air-cooled oil cooler is
installed.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 3

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Alarm Message Cause(s) Notes

(A042) Alarm: Blower 2 - Low
Suction Pressure

(A043) Alarm: Blower 2 - High Phase
A Temperature

(A044) Alarm: Blower 2 - High Phase
B Temperature

(A045) Alarm: Blower 2 - High Phase
C Temperature

(A046) Alarm: Blower 2 - High ODE
Bearing Temperature

(A047) Alarm: Blower 2 - High DE
Bearing Temperature

(A048) Alarm: Blower 2 - High Motor
Amps

(A049) Alarm: Blower 2 - VFD Speed
Reference Fault

(A050) Alarm: Blower 2 - Oil Cooler
Fan Fault

(A051) Alarm:

(A052) Alarm:

(A053) Alarm:

(A054) Alarm:

(A055) Alarm:

(A056) Alarm:

(A057) Alarm:

(A058) Alarm:

(A059) Alarm:

(A060) Alarm: Blower 3 - High
Discharge Temperature

(A061) Alarm: Blower 3 - High
Discharge Pressure

(A062) Alarm: Blower 3 - Low
Suction Pressure

Blower 2 Suction Pressure falls
below "Suction Pressure" Low Alarm
Setpoint

Phase A Motor Winding
Temperature exceeds Motor
Winding Temperature High Alarm
Setpoint

Phase B Motor Winding Temperature
exceeds Motor Winding
Temperature High Alarm Setpoint

Phase C Motor Winding Temperature
exceeds Motor Winding
Temperature High Alarm Setpoint

Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Alarm Setpoint

Opposite Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Alarm Setpoint

Blower 2 Motor Amps exceeds
"Motor Amps" High Alarm Setpoint

Blower 2 Actual Speed is not within
1% of commanded speed.

Blower 2 Oil Cooler Fan is command­ed to run, running confi rmation is
not received.

Blower 3 Discharge Temperature
exceeds "Discharge Temperature"
High Alarm Setpoint

Blower 3 Discharge Pressure exceeds
"Discharge Pressure" High Alarm
Setpoint

Blower 3 Suction Pressure falls
below "Suction Pressure" Low Alarm
Setpoint

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if an air-cooled oil cooler is
installed.

11 – 4

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Alarm Message Cause(s) Notes

(A063) Alarm: Blower 3 - High Phase
A Temperature

(A064) Alarm: Blower 3 - High Phase
B Temperature

(A065) Alarm: Blower 3 - High Phase
C Temperature

(A066) Alarm: Blower 3 - High ODE
Bearing Temperature

(A067) Alarm: Blower 3 - High DE
Bearing Temperature

(A068) Alarm: Blower 3 - High Motor
Amps

(A069) Alarm: Blower 3 - VFD Speed
Reference Fault

(A070) Alarm: Blower 3 - Oil Cooler
Fan Fault

(A071) Alarm:

(A072) Alarm:

(A073) Alarm:

(A074) Alarm:

(A075) Alarm:

(A076) Alarm:

(A077) Alarm:

(A078) Alarm:

(A079) Alarm:

(A080) Alarm: Blower 4 - High
Discharge Temperature

(A081) Alarm: Blower 4 - High
Discharge Pressure

(A082) Alarm: Blower 4 - Low
Suction Pressure

(A083) Alarm: Blower 4 - High Phase
A Temperature

Phase A Motor Winding
Temperature exceeds Motor
Winding Temperature High Alarm
Setpoint

Phase B Motor Winding Temperature
exceeds Motor Winding
Temperature High Alarm Setpoint

Phase C Motor Winding Temperature
exceeds Motor Winding
Temperature High Alarm Setpoint

Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Alarm Setpoint

Opposite Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Alarm Setpoint

Blower 3 Motor Amps exceeds
"Motor Amps" High Alarm Setpoint

Blower 3 Actual Speed is not within
1% of commanded speed.

Blower 3 Oil Cooler Fan is command­ed to run, running confi rmation is
not received.

Blower 4 Discharge Temperature
exceeds "Discharge Temperature"
High Alarm Setpoint

Blower 4 Discharge Pressure exceeds
"Discharge Pressure" High Alarm
Setpoint

Blower 4 Suction Pressure falls
below "Suction Pressure" Low Alarm
Setpoint

Phase A Motor Winding
Temperature exceeds Motor
Winding Temperature High Alarm
Setpoint

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if an air-cooled oil cooler is
installed.

Active if Displaying Motor Winding
Temperatures

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 5

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Alarm Message Cause(s) Notes

(A084) Alarm: Blower 4 - High Phase
B Temperature

(A085) Alarm: Blower 4 - High Phase
C Temperature

(A086) Alarm: Blower 4 - High ODE
Bearing Temperature

(A087) Alarm: Blower 4 - High DE
Bearing Temperature

(A088) Alarm: Blower 4 - High Motor
Amps

(A089) Alarm: Blower 4 - VFD Speed
Reference Fault

(A090) Alarm: Blower 4 - Oil Cooler
Fan Fault

(A091) Alarm:

(A092) Alarm:

(A093) Alarm:

(A094) Alarm:

(A095) Alarm:

(A096) Alarm:

(A097) Alarm:

(A098) Alarm:

(A099) Alarm:

(A100) Alarm: Inlet Scrubber High
Level

(A101) Alarm: Inlet Scrubber High
High Level

(A102) Alarm: Inlet Scrubber Low
Low Level

(A103) Alarm: Upper Inlet Scrubber
High Level

(A104) Alarm: Upper Inlet Scrubber
High High Level

(A105) Alarm: (Unassigned)

(A106) Alarm: Lower Inlet Scrubber
High Level

(A107) Alarm: Lower Inlet Scrubber
High High Level

Phase B Motor Winding Temperature
exceeds Motor Winding
Temperature High Alarm Setpoint

Phase C Motor Winding Temperature
exceeds Motor Winding
Temperature High Alarm Setpoint

Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Alarm Setpoint

Opposite Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Alarm Setpoint

Blower 4 Motor Amps exceeds
"Motor Amps" High Alarm Setpoint

Blower 4 Actual Speed is not within
1% of commanded speed.

Blower 4 Oil Cooler Fan is command­ed to run, running confi rmation is
not received.

Inlet Scrubber High Liquid Level
Switch Activated

Inlet Scrubber High High Liquid Level
Switch Activated (Selected Action =
ALARM)

Inlet Scrubber Low Low Level
Switch Activated (Selected Action =
ALARM)

Inlet Scrubber Upper Section High
Level Switch Activated

Inlet Scrubber Upper Section
High High Level Switch Activated
(Selected Action = ALARM)

Inlet Scrubber Lower Section High
Level Switch Activated

Inlet Scrubber Lower Section High
High Level Switch Activated

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if an air-cooled oil cooler is
installed.

Active if Vane Type Inlet Scrubber is
Present

Active if Vane Type Inlet Scrubber is
Present

Active if Vane Type Inlet Scrubber is
Present

Active if Coalescing Type Inlet
Scrubber is Present

Active if Coalescing Type Inlet
Scrubber is Present

Active if Coalescing Type Inlet
Scrubber is Present

Active if Coalescing Type Inlet
Scrubber is Present

11 – 6

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Alarm Message Cause(s) Notes

(A108) Alarm: Inlet Scrubber High
Pressure Drop

(A109) Alarm: Inlet Scrubber
Condensate Pump Starter Fault

(A110) Alarm: Outlet Scrubber High
Level

(A111) Alarm: Outlet Scrubber High
High Level

(A112) Alarm: Outlet Scrubber Low
Low Level

(A113) Alarm: Upper Outlet
Scrubber High Level

(A114) Alarm: Upper Outlet
Scrubber High High Level

(A115) Alarm: (Unassigned)

(A116) Alarm: Lower Outlet
Scrubber High Level

(A117) Alarm: Lower Outlet
Scrubber High High Level

(A118) Alarm: Outlet Scrubber High
Pressure Drop

(A119) Alarm: Outlet Scrubber
Condensate Pump Starter Fault

(A120) Alarm: Out Of Range: Inlet
Scrubber Inlet Pressure

(A121) Alarm: Out Of Range: Inlet
Scrubber Outlet Pressure

(A122) Alarm: Out Of Range: Blower
1 Suction Temperature

Pressure Drop between scrubber
inlet and outlet pressure exceeds
"Inlet Scrubber Pressure Drop" High
Alarm Setpoint

Inlet Scrubber Condensate Pump
Commanded to run, run confi rma-
tion not received.

Outlet Scrubber High Liquid Level
Switch Activated

Outlet Scrubber High High Liquid
Level Switch Activated (Selected
Action = ALARM)

Outlet Scrubber Low Low Level
Switch Activated (Selected Action =
ALARM)

Outlet Scrubber Upper Section High
Level Switch Activated

Outlet Scrubber Upper Section
High High Level Switch Activated
(Selected Action = ALARM)

Outlet Scrubber Lower Section High
Level Switch Activated

Outlet Scrubber Lower Section High
High Level Switch Activated

Pressure Drop between scrubber
inlet and outlet pressure exceeds
"Outlet Scrubber Pressure Drop"
High Alarm Setpoint

Outlet Scrubber Condensate Pump
Commanded to run, run confi rma-
tion not received.

Inlet Scrubber Inlet Pressure
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA

Inlet Scrubber Outlet Pressure
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA

Blower 1 Suction Temperature
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA (if using a 4-20mA
Temperature Transmitter).

Active if Controlling a condensate
Pump on Inlet Scrubber

Active if Vane Type Inlet Scrubber is
Present

Active if Vane Type Inlet Scrubber is
Present

Active if Vane Type Inlet Scrubber is
Present

Active if Coalescing Type Inlet
Scrubber is Present

Active if Coalescing Type Inlet
Scrubber is Present

Active if Coalescing Type Inlet
Scrubber is Present

Active if Coalescing Type Inlet
Scrubber is Present

Active if Controlling a condensate
Pump on Inlet Scrubber

Active if an Inlet Scrubber is Present

Active if an Inlet Scrubber is Present

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 7

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Alarm Message Cause(s) Notes

(A123) Alarm: Out Of Range: Blower
2 Suction Temperature

(A124) Alarm: Out Of Range: Blower
3 Suction Temperature

(A125) Alarm: Out Of Range: Blower
4 Suction Temperature

(A126) Alarm: Out Of Range:
Aftercooler Outlet Temperature

(A127) Alarm: Out Of Range: Outlet
Scrubber Inlet Pressure

(A128) Alarm: Out Of Range: Outlet
Scrubber Outlet Pressure

(A129) Alarm: Out Of Range:
Discharge Recycle Control Pressure

Blower 2 Suction Temperature
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA (if using a 4-20mA
Temperature Transmitter).

Blower 3 Suction Temperature
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA (if using a 4-20mA
Temperature Transmitter).

Blower 4 Suction Temperature
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA (if using a 4-20mA
Temperature Transmitter).

Aftercooler Outlet Temperature
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA (if using a 4-20mA
Temperature Transmitter).

Outlet Scrubber Inlet Pressure
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA

Outlet Scrubber Outlet Pressure
Instrument is Disconnected or Raw
value is less than 3.5 mA or Greater
than 20.5 mA

Recycle Pressure Instrument is
Disconnected or Raw value is less
than 3.5 mA or Greater than 20.5
mA

Active if an Outlet Scrubber is
Present

Active if an Outlet Scrubber is
Present

Active if a Recycle Valve is Present

11 – 8

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Listing

Blower will shutdown if active.

Table 11-2. Trip Listing

Trip Message Cause(s) Notes

(T001) Trip: MCR Not Energized/E­Stop Active

(T002) Trip: PLC to Central Comms
Faulted

(T003) Trip:

(T004) Trip: Setpoint out of Range ­See Menu Screen

(T005) Trip: Invalid Blower
Confi guration

(T006) Trip:

(T007) Trip: Faulted I/O Module
Connection or Module Type

(T008) Trip:

(T009) Trip:

(T010) Trip: Low Suction Header
Pressure

(T011) Trip: High Discharge Header
Pressure

(T012) Trip:

(T013) Trip:

(T014) Trip:

(T015) Trip: User Defi ned Trip 1 User defi ned Trip 1 Message Defi ned in "Device Names"

(T016) Trip: User Defi ned Trip 2 User defi ned Trip 2 Message Defi ned in "Device Names"

(T017) Trip: User Defi ned Trip 3 User defi ned Trip 3 Message Defi ned in "Device Names"

(T018) Trip: User Defi ned Trip 4 User defi ned Trip 4 Message Defi ned in "Device Names"

(T019) Trip: User Defi ned Trip 5 User defi ned Trip 5 Message Defi ned in "Device Names"

(T020) Trip: Blower 1 - High
Discharge Temperature

Emergency Stop Button on PLC Panel
Pressed, Loss of Power, External
Emergency Stop Device Tripped

Loss of Communication with DCS/
Central - Settable Communications
Watchdog Timer Expired. (Action on
Comm Failure = Trip)

Blower Confi guration or Suction/
Discharge Pressure Source is invalid.
See Blower Confi guration Screen.

Suction Header Pressure drops
below "Suction Pressure" Low Trip
Setpoint

Suction Header Pressure rises above
"Discharge Pressure" High Trip
Setpoint

Blower 1 Discharge Temperature
exceeds "Discharge Temperature"
High Trip Setpoint

Watchdog Active if Control by
Communications is selected

Active if monitoring Suction Header
Pressure

Active if monitoring Discharge
Header Pressure

Screens

Screens

Screens

Screens

Screens

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 9

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Message Cause(s) Notes

(T021) Trip: Blower 1 - High
Discharge Pressure

(T022) Trip: Blower 1 - Low Suction
Pressure

(T023) Trip: Blower 1 - High Phase A
Temperature

(T024) Trip: Blower 1 - High Phase B
Temperature

(T025) Trip: Blower 1 - High Phase C
Temperature

(T026) Trip: Blower 1 - High ODE
Bearing Temperature

(T027) Trip: Blower 1 - High DE
Bearing Temperature

(T028) Trip: Blower 1 - High Motor
Amps

(T029) Trip: Blower 1 - Low Oil
Pressure (Pressure Switch)

(T030) Trip: Blower 1 - VFD Faulted Fault Contact on Blower 1 VFD is

(T031) Trip: Blower 1 Shunt Trip Blower 1 Motor was detected to be

(T032) Trip:

(T033) Trip:

(T034) Trip:

(T035) Trip: Blower 1 - Oil Pump
Fault

(T036) Trip:

(T037) Trip:

(T038) Trip:

(T039) Trip:

(T040) Trip: Blower 2 - High
Discharge Temperature

(T041) Trip: Blower 2 - High
Discharge Pressure

Blower 1 Discharge Pressure ex­ceeds "Discharge Pressure" High Trip
Setpoint

Blower 1 Suction Pressure falls below
"Suction Pressure" Low Trip Setpoint

Phase A Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Phase B Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Phase C Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Trip Setpoint

Opposite Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Trip Setpoint

Blower 1 Motor Amps exceeds
"Motor Amps" High Trip Setpoint

Blower 1 Actual Speed is not within
1% of commanded speed.

open indicating Drive Fault

running when not commanded to
run - Supplemental Shutdown out­put is energized.

Blower 1 external oil pump is com­manded to run but running confi r-
mation is not received.

Blower 2 Discharge Temperature
exceeds "Discharge Temperature"
High Trip Setpoint

Blower 2 Discharge Pressure ex­ceeds "Discharge Pressure" High Trip
Setpoint

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Oil Pressure safety switch is
installed.

11 – 10

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Message Cause(s) Notes

(T042) Trip: Blower 2 - Low Suction
Pressure

(T043) Trip: Blower 2 - High Phase A
Temperature

(T044) Trip: Blower 2 - High Phase B
Temperature

(T045) Trip: Blower 2 - High Phase C
Temperature

(T046) Trip: Blower 2 - High ODE
Bearing Temperature

(T047) Trip: Blower 2 - High DE
Bearing Temperature

(T048) Trip: Blower 2 - High Motor
Amps

(T049) Trip: Blower 2 - Low Oil
Pressure (Pressure Switch)

(T050) Trip: Blower 2 - VFD Faulted Fault Contact on Blower 2 VFD is

(T051) Trip: Blower 2 Shunt Trip Blower 2 Motor was detected to be

(T052) Trip:

(T053) Trip:

(T054) Trip:

(T055) Trip: Blower 2 - Oil Pump
Fault

(T056) Trip:

(T057) Trip:

(T058) Trip:

(T059) Trip:

(T060) Trip: Blower 3 - High
Discharge Temperature

(T061) Trip: Blower 3 - High
Discharge Pressure

(T062) Trip: Blower 3 - Low Suction
Pressure

Blower 2 Suction Pressure falls below
"Suction Pressure" Low Trip Setpoint

Phase A Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Phase B Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Phase C Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Trip Setpoint

Opposite Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Trip Setpoint

Blower 2 Motor Amps exceeds
"Motor Amps" High Trip Setpoint

Blower 2 Actual Speed is not within
1% of commanded speed.

open indicating Drive Fault

running when not commanded to
run - Supplemental Shutdown out­put is energized.

Blower 2 external oil pump is com­manded to run but running confi r-
mation is not received.

Blower 3 Discharge Temperature
exceeds "Discharge Temperature"
High Trip Setpoint

Blower 3 Discharge Pressure ex­ceeds "Discharge Pressure" High Trip
Setpoint

Blower 3 Suction Pressure falls below
"Suction Pressure" Low Trip Setpoint

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Oil Pressure safety switch is
installed.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 11

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Message Cause(s) Notes

(T063) Trip: Blower 3 - High Phase A
Temperature

(T064) Trip: Blower 3 - High Phase B
Temperature

(T065) Trip: Blower 3 - High Phase C
Temperature

(T066) Trip: Blower 3 - High ODE
Bearing Temperature

(T067) Trip: Blower 3 - High DE
Bearing Temperature

(T068) Trip: Blower 3 - High Motor
Amps

(T069) Trip: Blower 3 - Low Oil
Pressure (Pressure Switch)

(T070) Trip: Blower 3 - VFD Faulted Fault Contact on Blower 3 VFD is

(T071) Trip: Blower 3 Shunt Trip Blower 3 Motor was detected to be

(T072) Trip:

(T073) Trip:

(T074) Trip:

(T075) Trip: Blower 3 - Oil Pump
Fault

(T076) Trip: (Unassigned)

(T077) Trip: (Unassigned)

(T078) Trip: (Unassigned)

(T079) Trip:

(T080) Trip: Blower 4 - High
Discharge Temperature

(T081) Trip: Blower 4 - High
Discharge Pressure

(T082) Trip: Blower 4 - Low Suction
Pressure

(T083) Trip: Blower 4 - High Phase A
Temperature

Phase A Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Phase B Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Phase C Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Trip Setpoint

Opposite Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Trip Setpoint

Blower 3 Motor Amps exceeds
"Motor Amps" High Trip Setpoint

Blower 3 Actual Speed is not within
1% of commanded speed.

open indicating Drive Fault

running when not commanded to
run - Supplemental Shutdown out­put is energized.

Blower 3 external oil pump is com­manded to run but running confi r-
mation is not received.

Blower 4 Discharge Temperature
exceeds "Discharge Temperature"
High Trip Setpoint

Blower 4 Discharge Pressure ex­ceeds "Discharge Pressure" High Trip
Setpoint

Blower 4 Suction Pressure falls below
"Suction Pressure" Low Trip Setpoint

Phase A Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Oil Pressure safety switch is
installed.

Active if Displaying Motor Winding
Temperatures

11 – 12

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Message Cause(s) Notes

(T084) Trip: Blower 4 - High Phase B
Temperature

(T085) Trip: Blower 4 - High Phase C
Temperature

(T086) Trip: Blower 4 - High ODE
Bearing Temperature

(T087) Trip: Blower 4 - High DE
Bearing Temperature

(T088) Trip: Blower 4 - High Motor
Amps

(T089) Trip: Blower 4 - Low Oil
Pressure (Pressure Switch)

(T090) Trip: Blower 4 - VFD Faulted Fault Contact on Blower 4 VFD is

(T091) Trip: Blower 4 Shunt Trip Blower 4 Motor was detected to be

(T092) Trip:

(T093) Trip:

(T094) Trip:

(T095) Trip: Blower 4 - Oil Pump
Fault

(T096) Trip: (Unassigned)

(T097) Trip: (Unassigned)

(T098) Trip:

(T099) Trip: (Unassigned)

(T100) Trip: (Unassigned)

(T101) Trip: Inlet Scrubber High High
Level

(T102) Trip: Inlet Scrubber Low Low
Level

(T103) Trip: (Unassigned)

(A104) Alarm: Upper Inlet Scrubber
High High Level

(T105) Trip: (Unassigned)

(T106) Trip: (Unassigned)

Phase B Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Phase C Motor Winding Temperature
exceeds Motor Winding
Temperature High Trip Setpoint

Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Trip Setpoint

Opposite Drive End Motor Bearing
Temperature exceeds Motor Bearing
Temperature High Trip Setpoint

Blower 4 Motor Amps exceeds
"Motor Amps" High Trip Setpoint

Blower 4 Actual Speed is not within
1% of commanded speed.

open indicating Drive Fault

running when not commanded to
run - Supplemental Shutdown out­put is energized.

Blower 4 external oil pump is com­manded to run but running confi r-
mation is not received.

Inlet Scrubber High High Liquid Level
Switch Activated (Selected Action =
TRIP)

Inlet Scrubber Low Low Liquid Level
Switch Activated (Selected Action =
TRIP)

Inlet Scrubber Upper Section High
High Liquid Level Switch Activated
(Selected Action = TRIP)

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Winding
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Displaying Motor Bearing
Temperatures

Active if Oil Pressure safety switch is
installed.

Active if Vane Type Inlet Scrubber is
Present

Active if Vane Type Inlet Scrubber is
Present

Active if Coalescing Type Inlet
Scrubber is present

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 13

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Message Cause(s) Notes

(T107) Alarm: Lower Inlet Scrubber
High High Level

(T108) Trip: (Unassigned)

(T109) Trip: (Unassigned)

(T110) Trip: (Unassigned)

(T111) Alarm: Outlet Scrubber High
High Level

(T112) Alarm: Outlet Scrubber Low
Low Level

(T113) Trip: (Unassigned)

(T114) Alarm: Upper Outlet
Scrubber High High Level

(T115) Trip: (Unassigned)

(T116) Trip: (Unassigned)

(T117) Alarm: Lower Outlet Scrubber
High High Level

(T118) Trip: (Unassigned)

(T119) Trip: (Unassigned)

(T120) Trip: Out Of Range: Suction
Header Pressure

(T121) Trip: Out Of Range: Blower 1
Suction Pressure

(T122) Trip: Out Of Range: Blower 1
Discharge Pressure

(T123) Trip: Out Of Range: Blower 1
Discharge Temperature

(T124) Trip: Out Of Range: Blower 1
Phase A Temperature

(T125) Trip: Out Of Range: Blower 1
Phase B Temperature

(T126) Trip: Out Of Range: Blower 1
Phase C Temperature

Inlet Scrubber Lower Section High
High Liquid Level Switch Activated
(Selected Action = TRIP)

Outlet Scrubber High High Liquid
Level Switch Activated (Selected
Action = TRIP)

Outlet Scrubber Low Low Liquid
Level Switch Activated (Selected
Action = TRIP)

Outlet Scrubber Upper Section High
High Liquid Level Switch Activated
(Selected Action = TRIP)

Outlet Scrubber Lower Section High
High Liquid Level Switch Activated
(Selected Action = TRIP)

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

Active if Coalescing Type Inlet
Scrubber is present

Active if Vane Type Outlet Scrubber
is Present

Active if Vane Type Outlet Scrubber
is Present

Active if Coalescing Type Outlet
Scrubber is present

Active if Coalescing Type Outlet
Scrubber is present

Active if Suction Header Pressure is
Being Monitored

Active if Winding Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

11 – 14

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Message Cause(s) Notes

(T127) Trip: Out Of Range: Blower 1
ODE Temperature

(T128) Trip: Out Of Range: Blower 1
DE Temperature

(T129) Trip: Out Of Range: Blower 1
Motor Amps

(T130) Trip: Out Of Range: Blower 2
Suction Pressure

(T131) Trip: Out Of Range: Blower 2
Discharge Pressure

(T132) Trip: Out Of Range: Blower 2
Discharge Temperature

(T133) Trip: Out Of Range: Blower 2
Phase A Temperature

(T134) Trip: Out Of Range: Blower 2
Phase B Temperature

(T135) Trip: Out Of Range: Blower 2
Phase C Temperature

(T136) Trip: Out Of Range: Blower 2
ODE Temperature

(T137) Trip: Out Of Range: Blower 2
DE Temperature

(T138) Trip: Out Of Range: Blower 2
Motor Amps

(T139) Trip: Out Of Range: Blower 3
Suction Pressure

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

Motor Amps input is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

Motor Amps input is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Active if Bearing Temperatures are
being monitored.

Active if Bearing Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

Active if Bearing Temperatures are
being monitored.

Active if Bearing Temperatures are
being monitored.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 15

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Message Cause(s) Notes

(T140) Trip: Out Of Range: Blower 3
Discharge Pressure

(T141) Trip: Out Of Range: Blower 3
Discharge Temperature

(T142) Trip: Out Of Range: Blower 3
Phase A Temperature

(T143) Trip: Out Of Range: Blower 3
Phase B Temperature

(T144) Trip: Out Of Range: Blower 3
Phase C Temperature

(T145) Trip: Out Of Range: Blower 3
ODE Temperature

(T146) Trip: Out Of Range: Blower 3
DE Temperature

(T147) Trip: Out Of Range: Blower 3
Motor Amps

(T148) Trip: Out Of Range: Blower 4
Suction Pressure

(T149) Trip: Out Of Range: Blower 4
Discharge Pressure

(T150) Trip: Out Of Range: Blower 4
Discharge Temperature

(T151) Trip: Out Of Range: Blower 4
Phase A Temperature

(T152) Trip: Out Of Range: Blower 4
Phase B Temperature

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

Motor Amps input is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Pressure Instrument is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

Active if Winding Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

Active if Bearing Temperatures are
being monitored.

Active if Bearing Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

Active if Winding Temperatures are
being monitored.

11 – 16

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Trip Message Cause(s) Notes

(T153) Trip: Out Of Range: Blower 4
Phase C Temperature

(T154) Trip: Out Of Range: Blower 4
ODE Temperature

(T155) Trip: Out Of Range: Blower 4
DE Temperature

(T156) Trip: Out Of Range: Blower 4
Motor Amps

(T157) Trip: Unassigned

(T158) Trip: Unassigned

(T159) Trip: Unassigned

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

RTD Input is Disconnected or Raw
Value is less than 3.5 mA or greater
than 20 mA (If using 4-20mA
Transmitter)

Motor Amps input is Disconnected
or Raw Value is less than 3.5 mA or
greater than 20 mA

Active if Winding Temperatures are
being monitored.

Active if Bearing Temperatures are
being monitored.

Active if Bearing Temperatures are
being monitored.

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 17

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Status Messages and Blower State Indicator

Status messages are used to indicate blower status information to the user. Status messages are used to inform the
user of any of the following conditions.

• Anti-Recycle Timer is active

• Blower Package is in standby mode and is waiting for one or more conditions to be met

• Load Limits and Forced Unloading

• Blower PLC has automatically reverted to Local-Auto mode on loss of communications with central controller
or DCS (if this function is enabled)

• A user is logged in

• An output is forced

Status messages are shown in a green scrolling banner at the top of the overview and menu screens.

Figure 11-3. Alarm/Trip/Status Bars (Main Menu Screen)

Table 11-3. Status Listing

Status Message Notes

(S001) Status: Blower 1 Stopped Displayed on the Event List only

(S002) Status: Blower 1 Started Displayed on the Event List only

(S003) Status: Blower 2 Stopped Displayed on the Event List only

(S004) Status: Blower 2 Started Displayed on the Event List only

(S005) Status: Blower 3 Stopped Displayed on the Event List only

(S006) Status: Blower 3 Started Displayed on the Event List only

(S007) Status: Blower 4 Stopped Displayed on the Event List only

(S008) Status: Blower 4 Started Displayed on the Event List only

(S009) Status: Blower 1 Anti-Recycle

(S010) Status: Blower 2 Anti-Recycle

(S011) Status: Blower 3 Anti-Recycle

(S012) Status: Blower 4 Anti-Recycle

(S013) Status: Waiting to Start: Remote Run Permissive
Input

(S014) Status: Waiting to Start: Soft Run Permissive from
DCS/Central

(S015) Status: Not Assigned

(S016) Status: Loading Inhibited: Low Suction Pressure

(S017) Status: Loading Inhibited: High Discharge Pressure

Blower PLC is waiting for a contact closure on the
remote run permissive input before the blowers may
start.

Blower PLC is waiting for a run command from the
central controller or DCS (if control by communica­tions enabled)

11 – 18

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Status Message Notes

(S018) Status: Not Assigned

(S019) Status: Forced Unload: Low Suction Pressure

(S020) Status: Forced Unload: High Discharge Pressure

(S021) Status: Not Assigned

(S022) Status: Not Assigned

(S023) Status: Comms Faulted, Reverted to Local Mode If "Control by Communications" is enabled and "Alarm

and Revert to Local" is selected as the communications
fault action.

(S024) Status: User SUPER Logged In

(S025) Status: User OP1 Logged In

(S026) Status: User OP2 Logged In

(S027) Status: User OP3 Logged In

(S028) Status: User OP4 Logged In

(S029) Status: User OP5 Logged In

(S030) Status: Blower 1 Motor Forced ON

(S031) Status: Blower 2 Motor Forced ON

(S032) Status: Blower 3 Motor Forced ON

(S033) Status: Blower 4 Motor Forced ON

(S034) Status: Blower 1 Oil Cooler Forced ON

(S035) Status: Blower 2 Oil Cooler Forced ON

(S036) Status: Blower 3 Oil Cooler Forced ON

(S037) Status: Blower 4 Oil Cooler Forced ON

(S038) Status: Blower 1 Oil Pump Forced ON

(S039) Status: Blower 2 Oil Pump Forced ON

(S040) Status: Blower 3 Oil Pump Forced ON

(S041) Status: Blower 4 Oil Pump Forced ON

(S042) Status: Not Assigned

(S043) Status: Not Assigned

(S044) Status: Aftercooler 1 VFD FORCED ON

(S045) Status: Aftercooler 1 Fan 1 FORCED ON

(S046) Status: Aftercooler 1 Fan 2 FORCED ON

(S047) Status: Aftercooler 1 Fan 3 FORCED ON

(S048) Status: Aftercooler 1 Fan 4 FORCED ON

(S049) Status: Aftercooler 1 Fan 5 FORCED ON

(S050) Status: Aftercooler 1 Fan 6 FORCED ON

(S051) Status: Aftercooler 1 Fan 7 FORCED ON

(S052) Status: Aftercooler 1 Fan 8 FORCED ON

(S053) Status: Aftercooler 1 Fan 9 FORCED ON

(S054) Status: Aftercooler 1 Fan 10 FORCED ON

(S055) Status: Not Assigned

(S056) Status: Not Assigned

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 19

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Status Message Notes

(S057) Status: Not Assigned

(S058) Status: Not Assigned

(S059) Status: Not Assigned

(S060) Status: Not Assigned

(S061) Status: Blower 1 Supplemental Shutdown Forced ON

(S062) Status: Blower 2 Supplemental Shutdown Forced ON

(S063) Status: Blower 3 Supplemental Shutdown Forced ON

(S064) Status: Blower 4 Supplemental Shutdown Forced ON

(S065) Status: Not Assigned

(S066) Status: Not Assigned

(S067) Status: Not Assigned

(S068) Status: Not Assigned

(S069) Status: Not Assigned

(S070) Status: Not Assigned

(S071) Status: Not Assigned

(S072) Status: Not Assigned

(S073) Status: Not Assigned

(S074) Status: Not Assigned

(S075) Status: Not Assigned

(S076) Status: Not Assigned

(S077) Status: Not Assigned

(S078) Status: Not Assigned

(S079) Status: Not Assigned

(S080) Status: Discharge Recycle Valve FORCED ON

(S081) Status: Not Assigned

(S082) Status: Not Assigned

(S083) Status: Alarm Indication FORCED ON

(S084) Status: Trip Indication FORCED ON

(S085) Status: Not Assigned

(S086) Status: Not Assigned

(S087) Status: Not Assigned

(S088) Status: Not Assigned

(S089) Status: Not Assigned

(S090) Status: Not Assigned

(S091) Status: Inlet Scrubber Drain Pump Forced ON

(S092) Status: Inlet Scrubber Drain Solenoid Forced ON

(S093) Status: Outlet Scrubber Drain Pump Forced ON

(S094) Status: Outlet Scrubber Drain Solenoid Forced ON

11 – 20

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Status Message Notes

(S095) Status: Not Assigned

(S096) Status: Not Assigned

(S097) Status: Not Assigned

(S098) Status: Not Assigned

(S099) Status: Not Assigned

(S100) Status: Not Assigned

(S101) Status: Not Assigned

(S102) Status: Not Assigned

(S103) Status: Not Assigned

(S104) Status: INLET SCRUBBER - PUMP 2 FORCED ON

(S105) Status: OUTLET SCRUBBER - PUMP 2 FORCED ON

(S106) Status: Not Assigned

(S107) Status: Not Assigned

(S108) Status: Not Assigned

(S109) Status: User MGR Logged In

(S110) Status: Not Assigned

(S111) Status: Not Assigned

(S112) Status: Not Assigned

(S113) Status: Aftercooler 1 Valve Forced

(S114) Status: Not Assigned

(S115) Status: Not Assigned

(S116) Status: Not Assigned

(S117) Status: Not Assigned

(S118) Status: Rung Edit Detected Indicates that the Blower PLC program has been

edited.

(S119) Status: Not Assigned

(S120) Status: Not Assigned

(S121) Status: Not Assigned

(S122) Status: Not Assigned

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

11 – 21

Section 11 • Alarms, Trips, Status Information & Troubleshooting

Troubleshooting

IF THE BLOWER(S) WILL NOT START

In order to initiate a start at the blower package, make sure all permissives to initiate a start are met.

To initiate a start, the following conditions must be met:

• Control Power is ON (Emergency Stop button is not pressed and Master Control Relay is energized, indicated by
pilot light on front of panel)

• No Active Trips

If a start has been initiated and the blower has not started, it is in standby mode. When in standby mode, the status
banner will indicate the condition that is preventing the blower from starting.

IF CONTROL POWER WILL NOT TURN ON

If unable to turn on control power/reset an emergency stop, check the following conditions:

To energize the Master Control Relay, the following conditions must be met:

• Blower PLC Panel must be supplied with 120VAC power.

• “Master Power” Selector Switch must be ON

• Local Emergency Stop pushbutton (mounted on PLC enclosure door) must be pulled out.

• DC power supplies must be powered up and functional, “DC OK” Relay must be energized.

• CompactLogix processor must be powered up and functional, “PLC OK” Output must be ON.

• Optional/External Emergency Stop Devices are not tripped.

11 – 22

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 12 • Communications with a Central Controller/DCS

Communication with a Central
Controller/DCS

It is possible for a central controller/DCS to read live data
and other information from the blower PLC as well as
send commands to the blower PLC. The following sec­tion outlines the PLC addresses that are used for inter­face between the blower PLC and central controller/DCS.

VPN ACCESS

VPN access allows Vilter engineers and technicians con­nect remotely to the blower PLC for greater ease of sup­port and troubleshooting. If possible, it is recommend­ed that VPN access be provided.

To allow VPN access to a blower PLC, the following are
required:

• A physical Ethernet Connection from the blower PLC

to the site control network

• IP address, Subnet Mask, and Gateway address must

be defi ned for each blower PLC and HMI on the site
control network

• A VPN server linked to the site control network

• VPN server login information

commands to the blower PLC. If reading data only, the
Watchdog timer is not used.

The watchdog timer works by “passing a bit” back and
forth between the Blower PLC and central controller/
DCS. If the blower PLC sees the bit in the same state
for a settable watchdog time, the communications are
faulted. The Communication fault action is selectable
between “Alarm and Revert to Local Mode” or “Trip
Machine.” If “Alarm and Revert to Local Mode” is se­lected, the blower will continue to run if running. If “Trip
Machine” is selected, the blower will trip and shut down.
The settable watchdog time and communications fault
action are selected on the Confi guration Screen.

The watchdog bits that are used are:

• Blower to Central/DCS: BOOL_OUT[0].0

• Central/DCS to Blower: BOOL_IN[0].0

When the Blower PLC sees BOOL_IN[0].0 OFF it will
turn BOOL_OUT[0].0 ON. To maintain the handshake,
the Central Controller/DCS shall Turn BOOL_IN[0].0 ON
When it sees BOOL_OUT[0].0 ON.

Data that can be Read from the

SETTING UP COMMUNICATIONS

The blower PLC communicates using the Ethernet IP pro­tocol. Communication to other devices compatible with
Ehternet IP is as simple as setting up CIP message in­structions and does not require any additional hardware
other than that required for the physical connection.

Interface Data in the blower PLC is organized into arrays
for simple access of data. For example, all live instru­ment data is arranged into a single block 200 elements
long. To get all of the data, only one message would
need to be confi gured to read an array of registers, Data
type REAL, Length of 200. See the communication ta­bles below for specifi cs.

NOTE

Setting up communications using a protocol other

than Ethernet IP is possible (Example Modbus RTU

or Modbus TCP), but additional hardware, software,

programming, and setup are required.

WATCHDOG TIMER

A watchdog timer is used to monitor the status of the
communication link between the blower PLC and Central
Controller/DCS. It is only necessary to write watch­dog logic when the Central Controller/DCS is sending

Blower PLC

LIVE INSTRUMENT DATA

Tags “REAL_OUT[0]” through “REAL_OUT[99]” present
the live data values as they appear on the HMI screen
in the selected engineering units. The Tags “REAL_
OUT[100]” through “REAL_OUT[199]” present all live
data values in base units, which are PSIA for pressures
and Degrees Fahrenheit for Temperatures. For data other
than Pressures and Temperatures, the engineering units
are fi xed and not selectable, and will appear the same in
“REAL_OUT[0]” through “REAL_OUT[99]” as they will in
“REAL_OUT[100]” through “REAL_OUT[199].” The en­gineering units selected are presented in the tags “INT_
OUT[0]” through “INT_OUT[99].”

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

12 – 1

Section 12 • Communications with a Central Controller/DCS

Table 12-1. Engineered Units Value Interpretation (INT_OUT[x])

Pressure Units

PSIG 0

PSIA (PSID) 1

kPa[A] (kPa[D]) 2

kPa[G] 12

kg/cm^2[A] (kg/cm^2[D]) 3

kg/cm^2[G] 13

inHg (vac) PSIG (pressure)

(If positive, value is in PSIG.
If negative, value is in inch­es Hg.)

inWC 15

Bar[A] 6

Bar[G] 16

Torr[A] 7

Torr[G] 17

INT_OUT[x] Value

4

Table 12-2. Live Instrument Data

Live Instrument Data: "REAL_OUT" (Data Type = REAL, Length = 200)

Temperature Units

Degrees Fahrenheit 0

Degrees Celsius 1

Kelvin 2

Degrees Rankine 3

INT_OUT[x] Value

Interface Tag Description Units

REAL_OUT[0] Inlet Scrubber Inlet Pressure INT_OUT[0]

REAL_OUT[1] Inlet Scrubber Outlet Pressure INT_OUT[1]

REAL_OUT[2] Inlet Scrubber Pressure Drop INT_OUT[2]

REAL_OUT[3] Outlet Scrubber Inlet Pressure INT_OUT[3]

REAL_OUT[4] Outlet Scrubber Outlet Pressure INT_OUT[4]

REAL_OUT[5] Outlet Scrubber Pressure Drop INT_OUT[5]

REAL_OUT[6] Suction Header Pressure INT_OUT[6]

REAL_OUT[7] Discharge Header Pressure INT_OUT[7]

REAL_OUT[8] Aftercooler 1 Outlet Temp INT_OUT[8]

REAL_OUT[9] Aftercooler 1 VFD Speed % Speed (100%=60Hz)

REAL_OUT[10] Discharge Recycle Control Pressure INT_OUT[10]

REAL_OUT[11] Discharge Recycle Commanded Postion % Position

REAL_OUT[12]

REAL_OUT[13]

REAL_OUT[14]

REAL_OUT[15]

REAL_OUT[16]

REAL_OUT[17]

REAL_OUT[18]

REAL_OUT[19]

12 – 2

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 12 • Communications with a Central Controller/DCS

Interface Tag Description Units

REAL_OUT[20] Blower 1 Suction Temperature INT_OUT[20]

REAL_OUT[21] Blower 1 Discharge Temperature INT_OUT[21]

REAL_OUT[22] Blower 1 Suction Pressure INT_OUT[22]

REAL_OUT[23] Blower 1 Discharge Pressure INT_OUT[23]

REAL_OUT[24] Blower 1 Commanded Speed % Speed (100%=60Hz)

REAL_OUT[25] Blower 1 Actual Speed % Speed (100%=60Hz)

REAL_OUT[26] Blower 1 Motor Amps Amps

REAL_OUT[27] Blower 1 Phase A Temperature INT_OUT[27]

REAL_OUT[28] Blower 1 Phase B Temperature INT_OUT[28]

REAL_OUT[29] Blower 1 Phase C Temperature INT_OUT[29]

REAL_OUT[30] Blower 1 ODE Bearing Temp INT_OUT[30]

REAL_OUT[31] Blower 1 DE Bearing Temp INT_OUT[31]

REAL_OUT[32] Blower 1 Runtime Hours Hours

REAL_OUT[33] Blower 1 Runtime Minutes Minutes

REAL_OUT[34]

REAL_OUT[35]

REAL_OUT[36]

REAL_OUT[37]

REAL_OUT[38]

REAL_OUT[39]

REAL_OUT[40] Blower 2 Suction Temperature INT_OUT[40]

REAL_OUT[41] Blower 2 Discharge Temperature INT_OUT[41]

REAL_OUT[42] Blower 2 Suction Pressure INT_OUT[42]

REAL_OUT[43] Blower 2 Discharge Pressure INT_OUT[43]

REAL_OUT[44] Blower 2 Commanded Speed % Speed (100%=60Hz)

REAL_OUT[45] Blower 2 Actual Speed % Speed (100%=60Hz)

REAL_OUT[46] Blower 2 Motor Amps Amps

REAL_OUT[47] Blower 2 Phase A Temperature INT_OUT[47]

REAL_OUT[48] Blower 2 Phase B Temperature INT_OUT[48]

REAL_OUT[49] Blower 2 Phase C Temperature INT_OUT[49]

REAL_OUT[50] Blower 2 ODE Bearing Temp INT_OUT[50]

REAL_OUT[51] Blower 2 DE Bearing Temp INT_OUT[51]

REAL_OUT[52] Blower 2 Runtime Hours Hours

REAL_OUT[53] Blower 2 Runtime Minutes Minutes

REAL_OUT[54]

REAL_OUT[55]

REAL_OUT[56]

REAL_OUT[57]

REAL_OUT[58]

REAL_OUT[59]

REAL_OUT[60] Blower 3 Suction Temperature INT_OUT[60]

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

12 – 3

Section 12 • Communications with a Central Controller/DCS

Interface Tag Description Units

REAL_OUT[61] Blower 3 Discharge Temperature INT_OUT[61]

REAL_OUT[62] Blower 3 Suction Pressure INT_OUT[62]

REAL_OUT[63] Blower 3 Discharge Pressure INT_OUT[63]

REAL_OUT[64] Blower 3 Commanded Speed % Speed (100%=60Hz)

REAL_OUT[65] Blower 3 Actual Speed % Speed (100%=60Hz)

REAL_OUT[66] Blower 3 Motor Amps Amps

REAL_OUT[67] Blower 3 Phase A Temperature INT_OUT[67]

REAL_OUT[68] Blower 3 Phase B Temperature INT_OUT[68]

REAL_OUT[69] Blower 3 Phase C Temperature INT_OUT[69]

REAL_OUT[70] Blower 3 ODE Bearing Temp INT_OUT[70]

REAL_OUT[71] Blower 3 DE Bearing Temp INT_OUT[71]

REAL_OUT[72] Blower 3 Runtime Hours Hours

REAL_OUT[73] Blower 3 Runtime Minutes Minutes

REAL_OUT[74]

REAL_OUT[75]

REAL_OUT[76]

REAL_OUT[77]

REAL_OUT[78]

REAL_OUT[79]

REAL_OUT[80] Blower 4 Suction Temperature INT_OUT[80]

REAL_OUT[81] Blower 4 Discharge Temperature INT_OUT[81]

REAL_OUT[82] Blower 4 Suction Pressure INT_OUT[82]

REAL_OUT[83] Blower 4 Discharge Pressure INT_OUT[83]

REAL_OUT[84] Blower 4 Commanded Speed % Speed (100%=60Hz)

REAL_OUT[85] Blower 4 Actual Speed % Speed (100%=60Hz)

REAL_OUT[86] Blower 4 Motor Amps Amps

REAL_OUT[87] Blower 4 Phase A Temperature INT_OUT[87]

REAL_OUT[88] Blower 4 Phase B Temperature INT_OUT[88]

REAL_OUT[89] Blower 4 Phase C Temperature INT_OUT[89]

REAL_OUT[90] Blower 4 ODE Bearing Temp INT_OUT[90]

REAL_OUT[91] Blower 4 DE Bearing Temp INT_OUT[91]

REAL_OUT[92] Blower 4 Runtime Hours Hours

REAL_OUT[93] Blower 4 Runtime Minutes Minutes

REAL_OUT[94]

REAL_OUT[95]

REAL_OUT[96]

REAL_OUT[97]

REAL_OUT[98]

REAL_OUT[99]

REAL_OUT[100] Inlet Scrubber Inlet Pressure PSIA

REAL_OUT[101] Inlet Scrubber Outlet Pressure PSIA

12 – 4

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 12 • Communications with a Central Controller/DCS

Interface Tag Description Units

REAL_OUT[102] Inlet Scrubber Pressure Drop PSID

REAL_OUT[103] Outlet Scrubber Inlet Pressure PSIA

REAL_OUT[104] Outlet Scrubber Outlet Pressure PSIA

REAL_OUT[105] Outlet Scrubber Pressure Drop PSID

REAL_OUT[106] Suction Header Pressure PSIA

REAL_OUT[107] Discharge Header Pressure PSIA

REAL_OUT[108] Aftercooler 1 Outlet Temp DEG F

REAL_OUT[109] Aftercooler 1 VFD Speed % Speed (100%=60Hz)

REAL_OUT[110] Discharge Recycle Control Pressure PSIA

REAL_OUT[111] Discharge Recycle Commanded Postion % Position

REAL_OUT[112]

REAL_OUT[113]

REAL_OUT[114]

REAL_OUT[115]

REAL_OUT[116]

REAL_OUT[117]

REAL_OUT[118]

REAL_OUT[119]

REAL_OUT[120] Blower 1 Suction Temperature DEG F

REAL_OUT[121] Blower 1 Discharge Temperature DEG F

REAL_OUT[122] Blower 1 Suction Pressure PSIA

REAL_OUT[123] Blower 1 Discharge Pressure PSIA

REAL_OUT[124] Blower 1 Commanded Speed % Speed (100%=60Hz)

REAL_OUT[125] Blower 1 Actual Speed % Speed (100%=60Hz)

REAL_OUT[126] Blower 1 Motor Amps Amps

REAL_OUT[127] Blower 1 Phase A Temperature DEG F

REAL_OUT[128] Blower 1 Phase B Temperature DEG F

REAL_OUT[129] Blower 1 Phase C Temperature DEG F

REAL_OUT[130] Blower 1 ODE Bearing Temp DEG F

REAL_OUT[131] Blower 1 DE Bearing Temp DEG F

REAL_OUT[132] Blower 1 Runtime Hours Hours

REAL_OUT[133] Blower 1 Runtime Minutes Minutes

REAL_OUT[134]

REAL_OUT[135]

REAL_OUT[136]

REAL_OUT[137]

REAL_OUT[138]

REAL_OUT[139]

REAL_OUT[140] Blower 2 Suction Temperature DEG F

REAL_OUT[141] Blower 2 Discharge Temperature DEG F

REAL_OUT[142] Blower 2 Suction Pressure PSIA

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

12 – 5

Section 12 • Communications with a Central Controller/DCS

Interface Tag Description Units

REAL_OUT[143] Blower 2 Discharge Pressure PSIA

REAL_OUT[144] Blower 2 Commanded Speed % Speed (100%=60Hz)

REAL_OUT[145] Blower 2 Actual Speed % Speed (100%=60Hz)

REAL_OUT[146] Blower 2 Motor Amps Amps

REAL_OUT[147] Blower 2 Phase A Temperature DEG F

REAL_OUT[148] Blower 2 Phase B Temperature DEG F

REAL_OUT[149] Blower 2 Phase C Temperature DEG F

REAL_OUT[150] Blower 2 ODE Bearing Temp DEG F

REAL_OUT[151] Blower 2 DE Bearing Temp DEG F

REAL_OUT[152] Blower 2 Runtime Hours Hours

REAL_OUT[153] Blower 2 Runtime Minutes Minutes

REAL_OUT[154]

REAL_OUT[155]

REAL_OUT[156]

REAL_OUT[157]

REAL_OUT[158]

REAL_OUT[159]

REAL_OUT[160] Blower 3 Suction Temperature DEG F

REAL_OUT[161] Blower 3 Discharge Temperature DEG F

REAL_OUT[162] Blower 3 Suction Pressure PSIA

REAL_OUT[163] Blower 3 Discharge Pressure PSIA

REAL_OUT[164] Blower 3 Commanded Speed % Speed (100%=60Hz)

REAL_OUT[165] Blower 3 Actual Speed % Speed (100%=60Hz)

REAL_OUT[166] Blower 3 Motor Amps Amps

REAL_OUT[167] Blower 3 Phase A Temperature DEG F

REAL_OUT[168] Blower 3 Phase B Temperature DEG F

REAL_OUT[169] Blower 3 Phase C Temperature DEG F

REAL_OUT[170] Blower 3 ODE Bearing Temp DEG F

REAL_OUT[171] Blower 3 DE Bearing Temp DEG F

REAL_OUT[172] Blower 3 Runtime Hours Hours

REAL_OUT[173] Blower 3 Runtime Minutes Minutes

REAL_OUT[174]

REAL_OUT[175]

REAL_OUT[176]

REAL_OUT[177]

REAL_OUT[178]

REAL_OUT[179]

REAL_OUT[180]

REAL_OUT[181]

REAL_OUT[182]

Blower 4 Suction Temperature DEG F
Blower 4 Discharge Temperature DEG F
Blower 4 Suction Pressure PSIA

12 – 6

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 12 • Communications with a Central Controller/DCS

Interface Tag Description Units

REAL_OUT[183]

REAL_OUT[184]

REAL_OUT[185]

REAL_OUT[186]

REAL_OUT[187]

REAL_OUT[188]

REAL_OUT[189]

REAL_OUT[190]

REAL_OUT[191]

REAL_OUT[192]

REAL_OUT[193]

REAL_OUT[194]

REAL_OUT[195]

REAL_OUT[196]

REAL_OUT[197]

REAL_OUT[198]

REAL_OUT[199]

Blower 4 Discharge Pressure PSIA
Blower 4 Commanded Speed % Speed (100%=60Hz)
Blower 4 Actual Speed % Speed (100%=60Hz)
Blower 4 Motor Amps Amps
Blower 4 Phase A Temperature DEG F
Blower 4 Phase B Temperature DEG F
Blower 4 Phase C Temperature DEG F
Blower 4 ODE Bearing Temp DEG F
Blower 4 DE Bearing Temp DEG F
Blower 4 Runtime Hours Hours
Blower 4 Runtime Minutes Minutes

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

12 – 7

Section 12 • Communications with a Central Controller/DCS

Alarm and Trip Data

Alarm and Trip Data is presented in Double Integer Format. To interpret the Alarm and Trip data, it is necessary to ad­dress the specifi c bits of the Double Integer.

Table 12-3. Alarm Data

ALARMS AND TRIPS (Data Type = DINT)

Interface Tag Description

BOOL_OUT[1].0 (A001) Alarm:

BOOL_OUT[1].1 (A002) Alarm: PLC to Central Comms Faulted

BOOL_OUT[1].2 (A003) Alarm:

BOOL_OUT[1].3 (A004) Alarm:

BOOL_OUT[1].4 (A005) Alarm:

BOOL_OUT[1].5 (A006) Alarm:

BOOL_OUT[1].6 (A007) Alarm:

BOOL_OUT[1].7 (A008) Alarm:

BOOL_OUT[1].8 (A009) Alarm:

BOOL_OUT[1].9 (A010) Alarm: Low Suction Header Pressure

BOOL_OUT[1].10 (A011) Alarm: High Discharge Header Pressure

BOOL_OUT[1].11 (A012) Alarm: Aftercooler VFD Fault

BOOL_OUT[1].12 (A013) Alarm: Aftercooler Fan Starter Fault

BOOL_OUT[1].13 (A014) Alarm:

BOOL_OUT[1].14 (A015) Alarm: User Defi ned Alarm 1

BOOL_OUT[1].15 (A016) Alarm: User Defi ned Alarm 2

BOOL_OUT[1].16 (A017) Alarm: User Defi ned Alarm 3

BOOL_OUT[1].17 (A018) Alarm: User Defi ned Alarm 4

BOOL_OUT[1].18 (A019) Alarm: User Defi ned Alarm 5

BOOL_OUT[1].19 (A020) Alarm: Blower 1 - High Discharge Temperature

BOOL_OUT[1].20 (A021) Alarm: Blower 1 - High Discharge Pressure

BOOL_OUT[1].21 (A022) Alarm: Blower 1 - Low Suction Pressure

BOOL_OUT[1].22 (A023) Alarm: Blower 1 - High Phase A Temperature

BOOL_OUT[1].23 (A024) Alarm: Blower 1 - High Phase B Temperature

BOOL_OUT[1].24 (A025) Alarm: Blower 1 - High Phase C Temperature

BOOL_OUT[1].25 (A026) Alarm: Blower 1 - High ODE Bearing Temperature

BOOL_OUT[1].26 (A027) Alarm: Blower 1 - High DE Bearing Temperature

BOOL_OUT[1].27 (A028) Alarm: Blower 1 - High Motor Amps

BOOL_OUT[1].28 (A029) Alarm: Blower 1 - VFD Speed Reference Fault

BOOL_OUT[1].29 (A030) Alarm: Blower 1 - Oil Cooler Fan Fault

BOOL_OUT[1].30 (A031) Alarm:

BOOL_OUT[1].31 (A032) Alarm:

BOOL_OUT[2].0 (A033) Alarm:

12 – 8

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Section 12 • Communications with a Central Controller/DCS

Interface Tag Description

BOOL_OUT[2].1 (A034) Alarm:

BOOL_OUT[2].2 (A035) Alarm:

BOOL_OUT[2].3 (A036) Alarm:

BOOL_OUT[2].4 (A037) Alarm:

BOOL_OUT[2].5 (A038) Alarm:

BOOL_OUT[2].6 (A039) Alarm:

BOOL_OUT[2].7 (A040) Alarm: Blower 2 - High Discharge Temperature

BOOL_OUT[2].8 (A041) Alarm: Blower 2 - High Discharge Pressure

BOOL_OUT[2].9 (A042) Alarm: Blower 2 - Low Suction Pressure

BOOL_OUT[2].10 (A043) Alarm: Blower 2 - High Phase A Temperature

BOOL_OUT[2].11 (A044) Alarm: Blower 2 - High Phase B Temperature

BOOL_OUT[2].12 (A045) Alarm: Blower 2 - High Phase C Temperature

BOOL_OUT[2].13 (A046) Alarm: Blower 2 - High ODE Bearing Temperature

BOOL_OUT[2].14 (A047) Alarm: Blower 2 - High DE Bearing Temperature

BOOL_OUT[2].15 (A048) Alarm: Blower 2 - High Motor Amps

BOOL_OUT[2].16 (A049) Alarm: Blower 2 - VFD Speed Reference Fault

BOOL_OUT[2].17 (A050) Alarm: Blower 2 - Oil Cooler Fan Fault

BOOL_OUT[2].18 (A051) Alarm:

BOOL_OUT[2].19 (A052) Alarm:

BOOL_OUT[2].20 (A053) Alarm:

BOOL_OUT[2].21 (A054) Alarm:

BOOL_OUT[2].22 (A055) Alarm:

BOOL_OUT[2].23 (A056) Alarm:

BOOL_OUT[2].24 (A057) Alarm:

BOOL_OUT[2].25 (A058) Alarm:

BOOL_OUT[2].26 (A059) Alarm:

BOOL_OUT[2].27 (A060) Alarm: Blower 3 - High Discharge Temperature

BOOL_OUT[2].28 (A061) Alarm: Blower 3 - High Discharge Pressure

BOOL_OUT[2].29 (A062) Alarm: Blower 3 - Low Suction Pressure

BOOL_OUT[2].30 (A063) Alarm: Blower 3 - High Phase A Temperature

BOOL_OUT[2].31 (A064) Alarm: Blower 3 - High Phase B Temperature

BOOL_OUT[3].0 (A065) Alarm: Blower 3 - High Phase C Temperature

BOOL_OUT[3].1 (A066) Alarm: Blower 3 - High ODE Bearing Temperature

BOOL_OUT[3].2 (A067) Alarm: Blower 3 - High DE Bearing Temperature

BOOL_OUT[3].3 (A068) Alarm: Blower 3 - High Motor Amps

BOOL_OUT[3].4 (A069) Alarm: Blower 3 - VFD Speed Reference Fault

BOOL_OUT[3].5 (A070) Alarm: Blower 3 - Oil Cooler Fan Fault

BOOL_OUT[3].6 (A071) Alarm:

BOOL_OUT[3].7 (A072) Alarm:

BOOL_OUT[3].8 (A073) Alarm:

BOOL_OUT[3].9 (A074) Alarm:

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

12 – 9

Section 12 • Communications with a Central Controller/DCS

Interface Tag Description

BOOL_OUT[3].10 (A075) Alarm:

BOOL_OUT[3].11 (A076) Alarm:

BOOL_OUT[3].12 (A077) Alarm:

BOOL_OUT[3].13 (A078) Alarm:

BOOL_OUT[3].14 (A079) Alarm:

BOOL_OUT[3].15 (A080) Alarm: Blower 4 - High Discharge Temperature

BOOL_OUT[3].16 (A081) Alarm: Blower 4 - High Discharge Pressure

BOOL_OUT[3].17 (A082) Alarm: Blower 4 - Low Suction Pressure

BOOL_OUT[3].18 (A083) Alarm: Blower 4 - High Phase A Temperature

BOOL_OUT[3].19 (A084) Alarm: Blower 4 - High Phase B Temperature

BOOL_OUT[3].20 (A085) Alarm: Blower 4 - High Phase C Temperature

BOOL_OUT[3].21 (A086) Alarm: Blower 4 - High ODE Bearing Temperature

BOOL_OUT[3].22 (A087) Alarm: Blower 4 - High DE Bearing Temperature

BOOL_OUT[3].23 (A088) Alarm: Blower 4 - High Motor Amps

BOOL_OUT[3].24 (A089) Alarm: Blower 4 - VFD Speed Reference Fault

BOOL_OUT[3].25 (A090) Alarm: Blower 4 - Oil Cooler Fan Fault

BOOL_OUT[3].26 (A091) Alarm:

BOOL_OUT[3].27 (A092) Alarm:

BOOL_OUT[3].28 (A093) Alarm:

BOOL_OUT[3].29 (A094) Alarm:

BOOL_OUT[3].30 (A095) Alarm:

BOOL_OUT[3].31 (A096) Alarm:

BOOL_OUT[4].0 (A097) Alarm:

BOOL_OUT[4].1 (A098) Alarm:

BOOL_OUT[4].2 (A099) Alarm:

BOOL_OUT[4].3 (A100) Alarm: Inlet Scrubber High Level

BOOL_OUT[4].4 (A101) Alarm: Inlet Scrubber High High Level

BOOL_OUT[4].5 (A102) Alarm: Inlet Scrubber Low Low Level

BOOL_OUT[4].6 (A103) Alarm: Upper Inlet Scrubber High Level

BOOL_OUT[4].7 (A104) Alarm: Upper Inlet Scrubber High High Level

BOOL_OUT[4].8 (A105) Alarm: (Unassigned)

BOOL_OUT[4].9 (A106) Alarm: Lower Inlet Scrubber High Level

BOOL_OUT[4].10 (A107) Alarm: Lower Inlet Scrubber High High Level

BOOL_OUT[4].11 (A108) Alarm: Inlet Scrubber High Pressure Drop

BOOL_OUT[4].12 (A109) Alarm: Inlet Scrubber Condensate Pump Starter Fault

BOOL_OUT[4].13 (A110) Alarm: Outlet Scrubber High Level

BOOL_OUT[4].14 (A111) Alarm: Outlet Scrubber High High Level

BOOL_OUT[4].15 (A112) Alarm: Outlet Scrubber Low Low Level

BOOL_OUT[4].16 (A113) Alarm: Upper Outlet Scrubber High Level

BOOL_OUT[4].17 (A114) Alarm: Upper Outlet Scrubber High High Level

BOOL_OUT[4].18 (A115) Alarm: (Unassigned)

12 – 10

Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP