Emerson VSSG 291, VSSG 601, VSSG 341, VSSG 451, VSG 751 Software Manual

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VSG & VSSG

Single Screw Compressor

Software Manual

Compact Logix PLC

Important Note

Before applying power to the control panel, all wiring to the panel shall be installed per NEC. Specifically check for proper voltage and that the neutral is grounded at the source. An equipment ground should also be run to the panel.

*See Wiring Instructions and Diagrams before proceeding.

NOTES:

• Before start-up you need to enter all system values and options, see section on Setpoint Values.

• Power circuits entry on left side of enclosure

• Instrument circuits entry on right side of enclosure

Electrical installation shall be completed by a licensed electrician qualified in field wiring

located in Class 1 Div 2 Hazardous Locations per the National Electric Code (NEC).

Table of Contents

Important Note .................................................................................................3

VSG STANDARD VILTER WARRANTY STATEMENT

............................................... 6

Operational Flow Charts ....................................................................................7

Main Screen

.....................................................................................................15

Log On Screen .................................................................................................16

Set Up Screen ..................................................................................................17

Vilter Only Screen

............................................................................................19

Menu Screen ...................................................................................................20

Compressor Alarm and Trip

............................................................................. 24

Compressor Control Setpoints ......................................................................... 27

Additional Compressor Controls ...................................................................... 32

Compressor Setpoints and Alarms Motor Speed Setpoints & Control Screen

................................................................... 34

.........................................................35

Diagnostics Force Output ................................................................................37

Instrument Calibration ....................................................................................38

Oil Mixing Valve ...............................................................................................43

Unit Start Screen (Start / Stop Logic) Device Names

..................................................................................................50

................................................................47

Calibration Procedure of Optical Actuators ...................................................... 51

Calibration Procedure of Optical Actuators ...................................................... 52

Calibration Procedure of Optical Actuators ...................................................... 53

Installation Instructions For Replacement Of Optical Actuator Slide Valve Actuator Theory of Operation

........................................................ 55

.........................54

Slide Valve Actuator Troubleshooting Guide ....................................................56

Slide Valve Actuator Troubleshooting Guide ....................................................57

Slide Valve Actuator Troubleshooting Guide ....................................................58

Command Shaft Rotation and Travel Safety Failure Message

....................................................................................60

................................................................ 59

Safety Failure Message .................................................................................... 61

Safety Failure Message .................................................................................... 62

Version Screen .................................................................................................63

Trend Charts

....................................................................................................64

Trend Charts .................................................................................................... 65

Captured Data at Shutdown

............................................................................ 67

Appendix A: Slide Valve Actuator Troubleshooting Guide Appendix B: Drawings and Parts Lists

VSG STANDARD VILTER WARRANTY STATEMENT

Seller warrants all new single screw gas compression units and bareshaft single screw compressors 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 first.

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 above 100 PPM. 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, specifications, 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 confirmed to be such in writing by Seller.

Requirements to Start Compressor

Operational Flow Charts

Volume and

Capacity slides are

less than 5 %.

Oil Separator Temp > Oil Sep Start

Trip

Setpt.

Oil Pump On: Prelub Oil Press is > Prelub Oil Press Reset Setpt for “Min Compressor Prelub Timer” setting (Default 7 Seconds)

Critical Compressor Run Logic @ Compressor Start

Start

Compressor

Start Mode

Prelube 5

Seconds

Satified Oil

Pressure

Filter Diff Press <

Filter Diff

Start Trip Setpt

Is Run Oil Press >

Run Oil Press setpt?

Yes

Start Compressor

Run Oil Press >

Run Oil Press

setpt?

Reset

(Default 40 PSI)

Run Oil Press Failure

“Filter Diff Press Safety

Changeover” timer expires

(60 sec after start).

Compressor Amperage Load Limiting

Motor Amps >

FLA (ON

)

Setpt?

Yes

Capacity INC Disabled

Motor Amps >

Max (OFF

)

Setpt?

Yes

Filter Diff < Hi Filter

Diff Press Run Trip

setpt?

Oil Separator Temp Safety Changeover

Yes Yes

Timer expires. (5 min after start)

Oil Sep Temp > Lo

Oil Sep Run Reset

setpt:?

Run Filter Diff Press Failure Lo Run Oil Sep Temp Failure

High Disch Pressure Load Limit

Is Normal Loading & Unloading

Disch Press >

Cutin (ON

)

Normal Loading &

Unloading

Setpt?

Yes

Capacity INC Disabled

Capacity Decrease until Amps < FLA x

1.0625

Disch Press >

Cutout (OFF

Setpt?

)

Capacity Decrease until

Yes

DischPress < ON Setpt x

1.0625

Yes

Run

Suction Pressure Control

Suction Press >

Suct Press Cap Inc

Setpt?

Suction Press <

Suct Press Cap

Dec Setpt?

Suction Pressure Safety

Capacity Inc

No No

Yes Yes Yes

Is Cap Inc ON Timer

Timed Out?

WAIT

Is Cap Inc OFF Timer

Timed Out?

Capacity Dec

Is Cap Dec. ON Timer

Yes Yes Yes

Timed Out?

Is Cap Dec. OFF Timer

Timed Out?

Reset Cap Inc Timers

Reset Cap Dec Timers

Suct Press Alarm

Suction Press <

Setpt?

Suction Press <

Suct Press Trip

Setpt?

Yes

Lo Suction Press

Alarm

Lo Suction Press

Failure

Oil Cooler Fan Control

(Selectable Control Optional)

Unit Start

Oil Cooler

outlet temp >

set pt?

NoNo

Oil Cooler

outlet temp <

set pt?

Yes

PID Control

30 sec

delay

Increase Speed

Decrease Speed

Oil Temperature Control Valve

Unit Start

No No

Oil injection

temp > set pt?

Oil injection

temp < set pt?

Yes

PID Control

30 sec

delay

Modulate valve

Delayed Lockout Timers WARNING: FOR THE FOLLOWING SHUTDOWNS, A DELAYED RESTART MAY OCCUR:

High Discharge Pressure Failure High Compressor Discharge Temp Failure High Package Outlet Temp Failure High Oil Injection Temp Failure

Shutdown due to

Operational

Failure

1 min Delay

Auto Restart if All Other Values

Are In Range

WARNING: INCASE OF A POWER FAILURE A DELAYED RESTART MAY OCCUR:

Shutdown Due

to Power Failure

Power Re-

establishing

Shutdown Value

Below Reset

Value?

Yes

Lockout

Requires

Manual Restart

Yes Yes

Has It been *H1 Hours Since

Shutdown?

Have

There Been 3 Shutdowns of “Any

of the Above Failure Conditions”

in H2 Hours

Yes

Has It been *H3 Hours Since

Shutdown?

H1= Timer Set Between .5-6 Hours. Default Value= .5 Hours

Yes

H2= Timer Set Between 4-100 Hours. Minimum and Default Value= 4 Hours H2 must be equal to or greater than 4 x H1

H3= Timer Set Between .5-6 Hours. Default Value= .5 Hours

Auto Restart if All Other Values

Are In Range

Yes

1 min Delay

Was Compressor

Running During Power

Failure?

Lockout

Requires

Manual Restart

Have

There Been 3 Shutdowns

of This Same Condition

in H4 Hours

H4= Timer Set Between 4-100 Hours. Minimum and Default Value= 4 Hours H4 must be equal to or greater than 4 x H3

Yes

Capacity Control Using Suction Pressure Control Setpoints

Start

Are Motor

Has

Decrease at Start

(Expired 15

sec.)

Yes No No Yes Yes

Amps >

Motor Amps Load

Setpt?

Limit ON

(Time Delay

10 sec)

Press > High Disch

Is Disch

Press Unload

OFF

Setpt?

Is Capacity

> Min Run Cap

OFF

Setpt?

Is Suct

Press > Cap Inc

Setpt?

Inc Cap (Timer)

Wait

Yes

Disable Cap Inc

Are Motor

Amps >

Motor Amp Load Limit

OFF

Setpt?

Yes

Dec Cap

(Timer)

Yes

Disable Cap Inc

Is Disch

Press > High Disch

Press Unload

Setpt?

Yes

No Change No Change

Dec Cap (Timer)

Increase Cap

(Timer)

Is Suct Press< Cap

Dec ON

Setpt?

Yes

Dec Cap

(Timer)

Capacity Control Using Discharge Pressure Control Setpoints

Start

Are Motor

Has Decrease at Start (Expired 15 sec.)

Yes Yes

Amps >

Motor Amps Load

Limit ON

Setpt?

(Time Delay

10 sec)

Is Disch Press > Cap

Dec ON

Setpt?

Dec Cap

(Timer)

Wait

Yes

Disable Cap Inc

Are Motor

Amps >

Motor Amp Load Limit

OFF

Setpt?

Yes

Dec Cap

(Timer)

Change)

Is Disch Press < Cap

Inc ON

Setpt

Yes

Inc Cap (Timer)

change

Compressor Operation with VFD Drive

Start

Compressor

Check/Adjust Capacity Slide

Start VFD at

Minimum Speed

(30 Hz Typ.)

Is Control Press.

Within Setpt

Deadbands?

Yes

Check/Adjust VFD

Is Control Press @

Setpoint?

Yes

Is Motor Speed @

Min?

Increase or Decrease the

Compressor Capacity Slides to

Match Setpoints

Increase or Decrease the

Compressor Capacity Slides to

Match Setpoints

Increase or Decrease Motor Speed

@ Rate Defined by VFD PID

Parameters

Is Capslide @

100%

Yes

Main Screen

This screen has been designed to give the operator an overall view of all operating parameters affecting the compressor package. This screen should

always be displayed when maintenance items and setpoint items are not being performed.

Status information such as Alarms and Trips are displayed on the screen.

This screen contains buttons to navigate to setpoint setup screens.

Status information on the compressor, oil pump, oil heater and run mode.

Start/Stop buttons.

Hour meter.

Motor amperage.

Compressor operating conditions.

Log On or Off

Log On Screen

Note: An operator will be automatically logged off after 10 minutes of inactivity.

Note: The machine can be run and monitored without logging on. To change the setup or parameters of the machine, the operator must log on.

Press Log on Button and the above screen will appear. When altering setpoints, log on is necessary. Select appropriate user name and enter password to change/access setpoints.

To Log On: Touch the current User Name in the white User Name box to display the keypad. Enter your User Name (case sensitive) and Password (case sensitive) then touch the <_| enter key.

Some Users are configured such that their passwords may be changed. To change a User’s password, touch the Password box or the “abc” button then enter the old password, new password and confirm the new password.

To Log Off: Touch the Log Off button. This will return to the DEFAULT low-level user. The DEFAULT user may navigate to most screens but cannot change settings.

Set Up Screen

From the Main screen, touch the Setup button. After entering an authorized user name and password, the screen pictured below will appear.

Pressure units,Temperature units and Suction/ Discharge Pressure control configurations are list selectable.

To choose a configuration from a list: 1.) Touch the list. 2.) Touch the Up or Down Arrow to move the green cursor “>” along side of the desired configuration. 3.) Touch the Enter button. This will highlightgreen the chosen configuration.

Touch Here

· Pressure Units – Select units of measure for pres- sure readings. Choices are psi, kg cm2 and kPa.

· Temperature Units – Select units of measure for temperature. Choices are Fahrenheit or Celsius.

· Anti-Recycle – The operator can select from the following Anti-Recycle options: True, Accumulative, Modified, or Hot Starts. These select the strategy used to prevent excessive start/stop cycles of the compressor. Timers and counters used to enforce anti-recycling are adjusted and monitored in the Compressor Timer Settings screen, reached from the Menu screen. Help for the Timer Settings screen explains how the different settings and strategies operate.

· Compressor Control Via – Operator can choose the method or mode of compressor control. This determines which measured variable is used in making loading (capacity control) decisions. The choice selected here determines which setpoints are made available for adjustment on the Compressor Control Setpoints screen.

· Slide Non-Movement – Alarm enable and dis- able buttons permit selecting whether an alarm should be generated when failure of slides to move is detected.

· Reset After Power Fail – When Auto is selected, the compressor will attempt to restart on powering up if it was running in ‘Auto’ when powered down and enabling conditions are met. When ‘Manual’ is selected, the compressor powers up into the ‘Stop’ mode and an explicit command to run is required from an operator or comms channel.

· Min Run Capacity – When enabled, the Minimum Run Capacity setting on the Addition Compressor Setpoints screen operates as described in the help for that screen. When multiple compressor sequencing is used, selecting Disable here does not interfere with use of the Min Run Capacity setting in the sequencing logic.

Vilter Only Screen

To set and synchronize the date and time for the HMI and ControlLogix or CompactLogix processor, first configure the PanelView date and time then, move the PanelView’s date and time to the processor

To set the date, time and regional settings in the PanelView Plus HMI:

1. Display the Vilter Only Screen (This screen has restricted access).

2. Touch the PanelView Configuration button.

3. Wait approximately 30 seconds while the PanelView application shuts down then loads.

4. Touch the Thermal Settings button.

5. Scroll to or touch the Time/Date/ Regional Settings field then touch the Enter button.

6. Set the Date, Regional Settings. Time and Time Zone as applicable. Touch OK after setting each screens’ values to accept the new values.

7. When finished, touch the Close button to exit the Time/Date/Regional Settings screen.

8. IMPORTANT: Clear the log files of the PanelView after changing the PanelView Date and/or time. a. Touch or scroll to the File Management field then touch the Enter Button. b. Touch or scroll to the Delete Files field then touch the Enter button. c. Touch or scroll to the Delete Log Files field then touch the Enter button. DO NOT DELETE APPLICATIONS! DO NOT DELETE FONTS! d. Touch “Yes” to delete the log files. e. Touch the Close button twice to return to the Terminal Settings screen.

9. Touch the Close button twice again to return to the Terminal Settings screen.

10. Touch the Reset button then “Yes” button to reset the PanelView.

To synchronize the ControlLogix or CompactLogix date and time to the PanelView date and time:

1. Display the Vilter Only Screen (This screen has restricted access).

2. Touch the “Touch to Synchronize CLX Clock to HMI” button.

Touch Here

Menu Screen

At the bottom of the Main screen touch the Menu button to bring up the screen shown in Figures below.

Use this screen to navigate to the other setpoint screens contained within the program. Each screen has a help button to describe the function of the screen.

There are several buttons that are common for all menu screens:

Return to Menu – This button always returns you to the Menu screen

Logon To Edit – The user is allowed to view data at all screen levels but cannot edit data until a login has occurred.

Refer to the Logon Instructions on page 21.

Set – To change a value, the operator must first press the SET button and then the text field of the value they

want to modify. A number pad will pop up for ease in entry.

Help – This screen will provide more information to the user about the operation of the microprocessor.

Event List – provides a chronological event listing.

Chart – Provides a line graph showing process values over a range of time.

Auto – Places the capacity slides into automatic mode. In automatic mode, the capacity slide moves according

to control setpoint information.

Manual – Places the capacity slides into manual mode. In manual mode, the capacity slide moves moves based

on input from the operator.

There are three options for the Compressor Control Setpoints:

Discharge Pressure Control

Suction Pressure Control

Process Temperature Control

Compressor Alarm and Trip

· Low Suction Pressure Setpoints 1&2 – This is the low suction pressure safety. This safety is active in both temperature and pressure control modes. An alarm or trip will be active on a drop in suction pressure below the setpoint value.

· High Discharge Pressure Setpoints 1&2 This is the high discharge pressure safety. The alarm or trip will be active on a rise in discharge pressure above the setpoint value.

· Low Suction Temperature – This is the lowest allowable Suction temperature. The compressor will not be allowed to run if the Suction Temperature is below the trip setting.

· High Discharge Temperature – This is the high discharge temperature safety. The alarm or trip will be active if the discharge temperature should rise above the setpoint value.

· Low Oil Separator Start Temperature – This is the starting low oil separator temperature safety. The compressor is prevented from starting or running if the oil in the separator is below the trip value. After a time delay (Oil Separator

Temperature Safety Changeover), this safety is deactivated and the Lo Oil Separator Run Temperature is the active setpoint.

· Low Oil Separator Run Temperature – This is the running low oil separator temperature safety. After a time delay (Oil Separator Temperature Safety Changeover), the Lo Oil Separator Start Temperature is bypassed and Lo Oil Separator Run Temperature is the active setpoint. The alarm or trip will be active if the oil temperature of the separator drops below the setpoint value.

· Low Oil Injection Temperature – This is the low oil injection safety. The alarm or trip will be active if oil injection temperature drops below setpoint value after a time delay (Oil Injection Temperature Safety Changeover).

· High Oil Injection Temperature – This is the high oil injection temperature safety. The alarm or trip will be active on a rise in oil injection temperature above the setpoint value.

Compressor Timer Setpoints

To change a timer setting, a user with high access level must be logged on.

· Capacity Decrease At Start – At compressor startup, the capacity motor is held at minimum position for this time period. After the timer expires, the slide is free to move in accordance to the system demands.

· Compressor Starter Auxiliary Contact Bypass – This timer is used to bypass the motor amperage input at start. After the timer times out, the program determines if the motor starter has pulled in by testing the amperage channel. If the program determines that the starter did not “pull in”, then the compressor will fail on “Motor Starter Fail” message.

· Volume Slide Adjustment Timer – This timer determines the intervals the volume slide is adjusted. If the volume slide is between 2½% & 7% away from the desired volume ratio, the motor is pulsed once toward the desired volume.

If the volume slide is more than 7% away from the desired value, the volume slide motor is continuously energized until the valve is within 2½% of the desired value. If the actual position is within 2½% of the desired value, no adjustment will be made.

· Minimum Compressor Prelube Timer – This is the length of time the oil pump will run after establishing the Prelube Oil Pressure, to prime oil circuit before starting the compressor.

· Oil Pressure Bypass At Compressor Start – This timer bypasses the Low Oil Pressure limits. The timer starts when the compressor starts. After the timer has cycled, the Low Oil Pressure setpoint is active.

· Prelube Oil Pump Time Limit – This timer puts a limit on how long the prelube oil pump is allowed to run without establishing the Prelube Oil Pressure.

· Filter Differential Pressure Safety Changeover – This timer bypasses the Hi Run Filter Differential Pressure setting during start, to allow the Hi Start Filter Differential Pressure to protect against High Filter Differential during start. After the timer has cycled, the Hi Run Differential Pressure Safety is active.

· Low Oil Separator Level Bypass Timer – This timer bypasses the low oil level switch for momentary drops in the oil level. If the switch is still open after the Low Oil Separator Level Bypass Timer has timed out, the compressor will be shut down and an alarm will be displayed. This timer is available if the unit is equipped with a low oil separator float switch. The oil level switch is standard on all liquid injection units and optional on all others.

· Auto Restart After Power Failure – This timer forces the microprocessor to wait for the set time period after a power failure before starting the compressor unit. By staggering the time settings, the compressors can be allowed to start automatically, one at a time, after a power failure. This prevents excessive loads on the power system that could be caused by all of the equipment coming online at the same time. The Power-Up Auto Start operator option must be selected on the Setup screen for this option to be active.

· Oil Separator Temperature Safety Changeover – This timer allows Low Oil Separator Start Temperature Safety setpoint to protect the compressor against cold oil during starting. After the timer has cycled, the Low Oil Separator Run Temperature is then active.

· Low Oil Injection Temperature Bypass – This timer bypasses the Low Oil Injection Temperature Safety Setpoint during start-up. After the timer cycles, the Low Oil Injection Temperature Safety is set.

· Hot Starts / Hr Counter – This counter counts compressor starts. After every start, a one-hour timer is reset and starts timing. If the timer times out, the hot starts counter is reset. When the counter reaches it’s preset value, it will not allow another compressor start until the onehour timer times out and resets the counter. In other words, the hot starts counter will be reset when the time between compressor starts total one hour. This counter allows repetitive compressor starts, but once the counter has reached its set point, it requires a one-hour window between compressor starts in order for the counter to be reset. Note: if this option

is chosen an arrow will appear alongside its current value. When active a point will appear.

· True Anti-Recycle Timer – Once the compressor turns off, the timer will keep the compressor off for the setting of True Anti-Recycle Timer. This timer is used to prevent short cycling of the compressor. Note: if this option is chosen an

arrow will appear alongside its current value. When active a point will appear.

· Accumulative Anti-Recycle Timer – This timer also forces a specified time between compressor starts. When the compressor starts, the timer resets then starts timing and accumulates running time. Once the compressor shuts down, it will not be allowed to restart for the remainder of the time left on the Accumulative Anti-Recycle Timer. Unlike the True AntiRecycle Timer, if the compressor has run for a time period that exceeds the setpoint of the Accumulative Anti-Recycle Timer, then when the compressor shuts down, it will be allowed to restart immediately. The compressor restart options (Hot Starts or Anti-Recycle Timers) are selected from the Setup screen. One additional Anti-Recycle Timer that can be selected from the Setup screen is the Modified Anti-Recycle Timer. Note: if this option is chosen an arrow

will appear alongside its current value. When active a point will appear.

Compressor Control Setpoints

From the Menu screen, press the Compressor Control setpoints button. The compressor control setpoints screen will be shown.

These screens enable the operator to view and adjust settings that affect compressor control.

From the Setup screen, the operator can choose the method or mode of compressor control:

Compressor Control Via:

1. Discharge Pressure

2. Suction Pressure

3. Process Temperature Control

Once the method is chosen, the appropriate setpoints are then displayed on the Compressor Control Setpoints screen.

The compressor will decide when to increase or decrease capacity by comparing the controlled variable to the setpoints. The maximum on time and minimum off time settings for slide actuator motors can be used to reduce hunting or improve response time. The default settings of 3 and 20 seconds respectively, provide good operation over a wide range of conditions.

From the Menu screen, press the Compressor Control setpoints button. The compressor control setpoints screen will be shown.

Level 1 Access – Compressor Control Setpoints

Discharge Pressure Control

Setpoints on this screen:

· Discharge Pressure On/Off – The compressor will automatically cycle ON and OFF at the setpoints entered.

Discharge Pressure On/Off control is only active if the Compressor Control Via Discharge Pressure option is selected on the Setup screen. If a compressor shutdown is desired on a discharge pressure drop and a manual reset is required, set the OFF value below the Low Discharge Pressure Safety Trip value. This will shut down the unit and a reset will be required to restart it.

· Discharge Pressure Capacity Increase – The capacity of the compressor will increase when suction pressure is at or above the Increase ON setpoint, and the increase “off” timer has cycled. Capacity will continue to increase until the Discharge Pressure Capacity Increase OFF setpoint is reached. If closer system control is desired, set the ON and OFF setpoints at the same values. This will essentially eliminate any differential between the ON and OFF setpoints.

· Discharge Pressure Capacity Decrease – The capacity of the compressor will decrease when discharge pressure is at or below the ON setpoint, and the decrease “off” timer has cycled. Capacity will continue to decrease until the Discharge Pressure Capacity Decrease OFF setpoint is reached. If closer system control is desired, set the ON and OFF setpoints at the same values. This will essentially eliminate any differential between the ON and OFF setpoints. While this setting is only available for adjustment on the Control Setpoints screen when the Compressor Control Via Suction Discharge option is selected on the

Setup screen, it has an override effect when control is via process temperature as described below.

Suction Pressure Control

Setpoints on this screen:

· Suction Pressure On/Off – The compressor will automatically cycle ON and OFF at the setpoints entered.

Suction Pressure On/Off control is only active if the Compressor Control Via Suction Pressure option is selected on the Setup screen. If a compressor shutdown is desired on a suction pressure drop and a manual reset is required, set the OFF value below the Low Suction Pressure Safety Trip value. This will shut down the unit and a reset will be required to restart it.

· Suction Pressure Capacity Increase – The capacity of the compressor will increase when suction pressure

is at or above the Increase ON setpoint, and the increase “off” timer has cycled. Capacity will continue to increase until the Suction Pressure Capacity Increase OFF setpoint is reached. If closer system control is desired, set the ON and OFF setpoints at the same values. This will essentially eliminate any differential between the ON and OFF setpoints.

· Suction Pressure Capacity Decrease – The capacity of the compressor will decrease when suction pressure

is at or below the ON setpoint, and the decrease “off” timer has cycled. Capacity will continue to decrease until the Suction Pressure Capacity Decrease OFF setpoint is reached. If closer system control is desired, set the ON and OFF setpoints at the same values. This will essentially eliminate any differential between the ON and OFF setpoints. While this setting is only available for adjustment on the Control Setpoints screen when the Compressor Control Via Suction Pressure option is selected on the Setup screen, it has an override effect when control is via process temperature as described below.

Process Temperature Control

Setpoints on this screen:

· Process Temperature Control – Provides for a Suction Pressure Override feature. If the suction pressure should drop below the Suction Pressure Capacity Decrease OFF setpoint, the Suction Pressure Capacity Decrease OFF setpoint will override the Capacity Control F Increase and prevent the compressor capacity from increasing (loading). If the suction pressure should continue to decrease below the Suction Pressure Capacity Decrease ON setpoint, the compressor capacity will be forced to decrease until the suction pressure is just above the Suction Pressure Capacity Decrease ON setpoint. This will help stabilize the suction pressure, allowing for the process temperature to be gradually pulled down. The Suction Pressure Capacity Decrease ON and OFF setpoints can viewed or adjusted by temporarily selecting “Processor Control Via Suction Pressure” on the Setup screen.

Note: Capacity Control for Refrigeration Only.

· Capacity Control °F On/Off – The compressor will automatically cycle ON and OFF at the setpoints entered.

Capacity Control °F On/Off is only active if the Compressor Control Via Process Temperature option is selected on the Setup screen. If compressor shutdown is desired on a process temperature drop and a manual reset is required, set the OFF value below the Low Control Temperature Safety trip valve. This will shut down the unit and a reset will be required to restart.

· Capacity Control °F Increase – The capacity of the compressor will increase when process temperature is at or above the ON setpoint, and the increase “off” timer has cycled. Capacity will continue to increase until the Capacity Control °F Increase OFF setpoint is reached. If closer system control is desired, set the ON and OFF setpoints at the same values. This will essentially eliminate and difference between the ON and OFF setpoints. Process temperature control of the capacity is active only if the Compressor Control Via Process Temperature option is selected on the Setup screen.

· Capacity Control °F Decrease – The capacity of the compressor will decrease when process temperature is at or below the ON setpoint, and the increase “off” timer has cycled. Capacity will continue to decrease until the Capacity Control °F Decrease OFF setpoint is reached. If closer system control is desired, set the ON and OFF setpoints at the same values. This will essentially eliminate and difference between the ON and OFF setpoints. Process temperature control of the capacity is active only if the Compressor Control Via Process Temperature option is selected on the Setup screen.

Additional Compressor Controls

· High Discharge Pressure Unloading Setpoints

– Active in Suction Pressure or Process Temperature Capacity Control mode. These setpoints limit the compressor from loading at high discharge pressure conditions. They override the Suction Pressure or Process Temperature Capacity Control setpoints. The capacity of the compressor will decrease when the discharge pressure is at or above the ON set point. When the OFF setpoint is reached, the compressor will stop from unloading any further.

If the motor is operating at the full load amperage (FLA) setting, the compressor is prevented from loading. If the motor amps exceed the MAX setpoint, the compressor is forced to unload until the current is at 1.0625 times above the FLA setting. If the motor being used has a service factor below 1.0625, use a value for the FLA that is 10% lower than the MAX value.

· Oil Separator Heater Temperature – This con- trol limit determines when the oil separator heater is energized. A decrease in oil separator

temperature below the ONsetpoint energizes the oil separator heater. On an increase in oil separator temperature above the OFF setpoint, the oil heater is de-energized.

· High Discharge Pressure Unloading Setpoints – Active in Suction Pressure or Process Temperature Capacity Control mode. These setpoints limit the compressor from loading at high discharge pressure conditions. They override the Suction Pressure or Process Temperature Capacity Control setpoints. The capacity of the compressor will decrease when the discharge pressure is at or above the ON set point. When the OFF setpoint is reached, the compressor will stop from unloading any further.

· Motor Amp. Load Limit Setpoints – This control limit is the motor full load current draw and the maximum current draw. This control limit will only prevent the compressor from loading and does not shut down the compressor if the maximum current draw setpoint is exceeded. The actual values entered may depend on particular circumstances. The function of the setpoint is as follows: If the motor is operating at the full load amperage (FLA) setting, the compressor is prevented from loading. If the motor amps exceed the MAX setpoint, the compressor is forced to unload until the current is at 1.0625 times above the FLA setting. If the motor being used has a service factor below 1.0625, use a value for the FLA that is 10% lower than the MAX value.

· Oil Separator Heater Temperature – This con- trol limit determines when the oil separator heater is energized. A decrease in oil separator temperature below the ON setpoint energizes the oil separator heater. On an increase in oil separator temperature above the OFF setpoint, the oil heater is de-energized.

· Oil Pump Restart – To determine the ON and OFF values for the pressure ratios, take the absolute discharge pressure (PSIA), and divide it by the absolute suction pressure (PSIA). If the pressure ratio is below the ON setpoint value, the oil pump will restart and stay on until the pressure ratio increases above the OFF setpoint. This enables a high stage compressor with a part time oil pump to temporarily operate under conditions requiring a full time oil pump.

EXAMPLE: To calculate the OFF value, if the absolute discharge pressure is 200 PSIA and the desired absolute suction pressure of the cut-out point is 67 PSIA, the discharge pressure is divided by the suction pressure. The result is a OFF value of approximately 3.0. This would then be entered for the OFF pressure. Now determine the ON value, take the absolute discharge pressure (200 PSIA) and divide this by the desired absolute suction pressure (71 PSIA). This results in a ON valve of 2.8.

· Capacity Slide Adjustment Range – This control limit determines the capacity range the Capacity Slide Adjustment factor will be active. The factor will be active from 0% capacity and will be deactivated when the OFF setpoint is reached. On a decrease in capacity below the ON set point, the factor will be active.

· Minimum Run Capacity – The Minimum Run Capacity is the minimum capacity the compressor will be allowed to run at. When the compressor is started, it will be loaded to the Minimum Run Capacity control setpoint minus 5%. This is done to prevent the capacity control from hunting if the load is not great enough to keep the compressor capacity at the Minimum Run Capacity setpoint. On a call for unloading, the compressor will unload until it reaches the Minimum Run Capacity control setpoint. It will remain there until the suction pressure reduces and the compressor cycles off on the Suction Pressure On/Off control setpoint.

· Volume Slide Adjustment Factor – This value is normally zero (0) and will not require changing. However, if the system operating conditions show the volume ratio is not at the optimum value for the system, this value can be adjusted up or down to permit the most efficient positioning of the volume slide valves. To determine the value to enter, first ensure that the system is in a steady operating state and place the volume side in manual. NOTE: The volume position setting and increase the volume side position slowly until the lowest amperage level is achieved. If the amperage level rises instead of falls, decrease the volume slide position until the lowest amperage is achieved.

Record the differential from the original position.

This will then be adjustment factor to enter for our system. NOTE: Negative numbers can be used for this setting. This setpoint is active on a drop in capacity below the Capacity Slide Adjustment Range cut-in (ON) setting. The adjustment is disabled when capacity rises above the Adjustment Range OFF setting. Normally, the “ON-Off” set points should both be set at 100%, so the volume side adjustment factor will be applied over the full range of 0 to 100%

· Current Transformer Ratio – The value entered

must agree with the Current Transformer Ratio on the current transformer being used. The current transformer is mounted in the compressor motor conduit box. The ratio is stated as the ratio of measured current to a nominal full scale current in the secondary of 5 amps; only the first of these is entered. For example, if the ratio reads 250/5, enter 250.

· Low Suction Pressure Load Limit – Active in

Discharge Pressure Capacity Control mode only. These setpoints limit the compressor from loading at low suction pressure conditions. They override the discharge pressure capacity control setpoints. When the OFF setpoint is reached (at or below setpoint), the compressor will not be allowed to load any further. If the suction pressure continues to fall, the capacity of the compressor will decrease when the suction pressure is at or below the ON set point. It will stop decreasing when the suction pressure rises to a point that is just below the ON set point.

Compressor Setpoints and Alarms

· Prelube Oil Pressure – If the oil pressure does not rise above the reset setting for a time exceeding the Minimum Compressor Prelube Time and the pump runs longer than the Prelube Pump Time Limit, an alarm or trip will occur. These time limits are set on the Compressor Timer Setpoints screen. Prelube oil pressure is defined as the amount that the oil pump drives manifold pressure above the discharge pressure.

· Low Oil Pressure – This is the running oil pressure safety. An alarm or trip will be active if the oil pressure should drop below the setpoint value. This occurs once the Oil Pressure Bypass timer has expired. The time limit is set on the Compressor Timer Setpoints screen. For the single screw compressor, oil pressure is defined as manifold pressure minus suction pressure.

· High Filter Differential Pressure Start – This safety setpoint is active when the compressor is in the start cycle. An alarm or trip will be active if the filter inlet pressure exceeds the filter outlet pressure by the setpoint value.

· High Filter Differential Pressure Run – This safety setpoint is active when the compressor is in the run cycle. An alarm or trip will be active if the filter inlet pressure exceeds the filter outlet pressure by the setpoint value.

· High Motor Amps – This safety setpoint is active after the Volume Decrease At Start Timer expires. This timer is not user settable, and in standard applications, is 15 seconds. A trip will occur if the motor amperage exceeds the safety setpoint value. The setpoint should be set at 125% of the motor full load amperage.

Motor Speed Setpoints & Control Screen

VFD SCREEN SETTINGS

Settings:

Auto Button:

Choosing Auto will do the following:

1. While the fan is off the Output Mode will be forced to Manual Mode.

2. When the fan starts, it will remain in Manual Mode at the Initial Speed for the period defined as Delay Auto.

3. After the Delay Auto time expires, the Output Mode will change to Auto Mode.

4. In Auto Mode, the VFD is enabled to increase and decrease speed to maintain the temperature set tings.

5. Increase At: High setting where an increase of speed is desired.

6. Decrease At: Low setting where a decrease of speed is desired

7. Initial Speed: Desired forced speed to start the fan at as described above. Note: The PLC will auto- matically keep this value to at least the Minimum Speed setting.

8. Max Speed Detect: Setting for PLC program detection of maximum speed. This setting will not limit the speed of the VFD. Generally, this setting is useful only when sequencing of multiple devices is used.

9. Minimum Speed: This is the minimum speed that the PLC will send to the VFD. This is active in Manual Mode and in Auto Mode.

Adjustment Limit: This is the maximum amount of change in speed per adjustment. If the Calculated Adjust- ment is greater than the Adjustment Limit value, the PLC output will only change the amount of the Adjust- ment Limit. If the Calculated Adjustment is less than the Adjustment Limit value, the PLC output will change

the amount of the Calculated Adjustment. The Adjustment Limit is used in conjunction with the Gain to prevent target overshooting.

10. Gain: This value is factory set to 2.50 but may be set from 0.1 to 99. For VFDs, Gain is a multiplica- tion factor used in a calculation to determine an adjustment to the speed each set interval. This interval is defined as the Increase Rate or Decrease Rate. Factory settings for Increase Rate and De- crease Rate are 2 to 5 seconds.

Manual Button:

Choosing Manual will do the following:

1. The fan Output Mode will remain Manual Mode.

2. Manual Speed: This setting becomes accessible only when the Manual Button is chosen. Enter the desired speed (%) for the VFD.

Stop Button:

Choosing Stop will remove the fan from Auto and from Manual. The VFD will ramp down to a stop. Note: The On/Off status of a VFD is based on a nominal speed feedback from the VFD. Therefore, the VFD Status will display “On” until the drive is near zero speed.

Bypass Button:

Choosing Bypass will remove the fan from VFD speed control. The bypass contactor will be used in lieu of the VFD.

Diagnostics Force Output

WARNING: Be sure to remove all outputs from Forced-On mode before exiting this screen!

To force an output, a user with high level access must be logged on first. Without sufficient access, the outputs display without force buttons. Touch the Logon button or Set button to prompt the Logon screen. At the Logon screen, enter the user name (case sensitive) then the user’s password (case sensitive) then press the <-| enter button. The currently logged in user’s name displays on the Logon screen, on the Logon button (on the main menu and on the Setup screen.

Once a user with sufficient access is logged on, force buttons appear.

To force an output on, touch its button. The “Main Compressor Motor Starter*” button and “Starter Reset” button are momentary-on buttons while the others are maintained buttons. Forced-on buttons display green. On/Off output status displays to the right of each button.

Return all maintained buttons to their off (grey color) state before exiting this screen. Exiting this screen does not automatically remove forces.

Instrument Calibration

To calibrate, a user with high level access must be logged on first. Without sufficient access, the raw input values and calibrated values display without “Calibrate” buttons. Touch the Logon button or Set button to prompt the Logon screen. At the Logon screen, enter the user name (case sensitive) then the user’s password (case sensitive) then press the <-| enter button. The currently logged in user’s name displays on the Logon screen, on the Logon button (on the main menu and on the Setup screen.

Once a user with sufficient access is logged on, Calibrate buttons appear.

The following items can be calibrated from this screen: Suction Pressure Transducer, Discharge Pressure Transducer, Oil Manifold Pressure Transducer, Oil Filter Inlet Pressure Transducer, Motor Amperage, Oil Cooling Fan Feedback, Suction Temperature RTD, Discharge Temperature RTD, Oil Separator Temperature RTD, Oil Injection RTD.

The “Calibrated Values” reflect the values used for control of the system. The user can perform calibration by pressing the respective Calibrate button alongside the value prompting the Calibration screen.

Calibration Instructions are provided on each Instrument Calibration screen.

Instrument Calibration

Instrument Calibration Pressures

Confirm the “mA Reading” value (the raw mA value at the analog module) is correct and stable.

If not already done, set the Minimum mA to 4.00

If not already done, set the Maximum mA to 20.00

Set the Minimum Pressure to the actual minimum pressure at 4mA as marked on the transducer.

Set the Maximum Pressure to the actual maximum pressure at 20mA as marked on the transducer.

Set the Offset to zero unless required otherwise. The offset value adds to the resultant linearly scaled value and results in the Calibrated Value which is used for control

Instrument Calibration Motor Amps

Confirm the “mA Reading” value (the raw mA value at the analog module) is correct and stable.

If not already done, set the Minimum mA to 4.00. This is the minimum mA expected from the current transmitter at 0 motor amps.

If not already done, set the Maximum mA to 20.00. This is the maximum mA possible from the current transmitter.

Set the Minimum Ratio value of the current transformer. Enter a 0 for zero amps.

Set the Maximum Ratio value of the current transformer. For example, if the CT has a 250:5 rating, enter 250 as the Maximum Ratio value.

Set the Offset to zero unless required otherwise. The offset value adds to the resultant linearly scaled value and results in the Calibrated Value which is used for control.

Instrument Calibration Temperatures

All RTDs are 100 ohm Pt and are scaled as such via hard-coded configuration in the PLC input module. The Raw T Reading is defined as the scaled value from the RTD input module.

Set the Offset to zero unless required otherwise. The offset value adds to the raw temperature reading scaled value to result in the Calibrated Value which is used for control.

Oil Mixing Valve

Various types of oil coolers can be used to maintain the oil injection temperature, usually either a water-cooled shell-&-tube heat exchanger mounted locally or a remotely located aircooled fan-coil unit. In either case, the oil temperature control valve operates the same.

A two-way ball valve is located in the main oil line between the oil separator and the compressor. The oil cooler is piped in parallel to the oil temperature control valve, which acts as a by-pass valve.

1.0 Installation & Position Indication

1.1 The ball valve is installed with the ball closed.

1.2 The actuator mounts on the ball valve stem. Flats on the ball valve stem indicate the position of the ball: OPEN – stem flats are with the flow CLOSED – stem flats are across the flow

1.3 On smaller valves, the ball valve stem flats are nearly hidden between the stem extension and the stem lock nut. The locking tabs on the stem lock nut are across the flow.

1.4 The actuator position indicator stem flats are oriented in the same direction as the ball valve stem flats.

1.5 There is a mechanical position indicator on the top of the actuator cover.

NOTE: The oil temperature control valve comes from the vendor already assembled with the ball closed and the actuator in the CLOSED position.

2.0 Control Action

2.1 The ball valve can rotate through a full 360° arc.

2.2 The actuator restricts the ball to a 90° arc of travel.

2.3 The actuator is powered (120V or 24V) all the time.

2.4 The position target signal from the compressor controller is a 4-20mA analog value.

2.5 There is no feedback position from the actuator.

3.0 Initial Position

3.1 With the electrical power to the valve de-energized, the valve is set to its initial position by ensuring that the ball is in the closed position and that the actuator indicator displays CLOSED.

3.2 When the electrical power to the valve is energized, the valve should rotate to fully OPEN.

4.0 Operation

4.1 When initially installed, the ball must be in the closed position.

4.2 When electrically energized, if the compressor is not running, the compressor controller will turn the valve fully open (100%).

4.3 When the compressor starts, the valve remains fully open (100%) until the oil injection temperature rises above the control setpoint.

4.4 When the oil injection temperature rises above the control setpoint, the oil temperature control valve will begin to close.

4.5 The hot oil from the oil separator begins to divert to the oil cooler, mixing the hot and cooled oil flow streams together downstream of the oil temperature control valve. The valve can fully close (0%) diverting the entire oil flow stream to the oil cooler.

4.6 As the oil injection temperature drops below the setpoint, the oil temperature control valve begins to open so that the oil injection temperature does not become too cold.

4.7 When the compressor stops, the valve returns to fully open (100%).

5.0 Fail Position

The actuator remains in its last position when power is removed.

6.0 Screen Display

The oil temperature control valve, identified as “OIL MIX” on the main HMI display screen, shows a numerical value with “%” as units. This is to be understood as “% OPEN.” It is a direct indication of the position of the ball valve.

6.1 100% OPEN Oil flow stream is entirely bypassing the oil cooler

6.2 99% to 1% OPEN Oil flow stream is partially by-passing the oil cooler and partially diverted to the oil cooler

6.3 0% OPEN Oil flow stream is entirely diverted to the oil cooler

7.0 Control Settings

The oil temperature control setpoints are entered on the compressor controller screen “Oil Mixing Valve PID (Oil Return from Cooler)”.

8.0 Rotating the Actuator for Convenience of Installation

The actuator can be rotated to any one of four positions.

8.1 Remove both 120V and 24V power from the actuator.

8.2 Disconnect electrical leads at actuator.

8.3 Remove four cap screws that fasten the actuator to the valve mounting bracket.

8.4 Lift the actuator off the valve stem.

8.5 Rotate the actuator to the desired position.

8.6 Slide actuator down on the valve stem.

8.7 Secure the actuator to the valve mounting bracket with four cap screws.

8.8 Re-connect the electrical leads at the actuator.

8.9. Restore 120V and 24V power to the actuator.

NOTE: The ball valve and the actuator must always be assembled in the CLOSED position. See Section 3.0 Calibration above.

CAUTION: Be careful not to move the ball stem during this operation. Turning the ball valve 90° in either direction will reverse the control action of the valve and the compressor will experience high oil temperature within minutes. Turning the ball valve 180° has no detrimental effect.

9.0 Manual Override

The actuator has a handwheel that can be engaged to override the electrically determined position of the ball valve.

Push and rotate to engage.

Push a second time to de-clutch.

Unit Start Screen (Start / Stop Logic)

Unit Start Button

Pressing this button will invoke a floating button panel, called Unit Start. The operational mode of the compressor unit can be selected from the Unit Start button panel. The compressor unit does not start when the green Unit Start button, on the main screen, is pressed.

Unit Start Window

Local Button

The Local button is used to put the compressor controller into Local mode. This is the default mode for the compressor controller. In Local mode the compressor unit must be operated in Auto or Manual mode.

Auto Button

In this mode the compressor will respond to its on-board settings for start, stop, load and unload commands.

Manual Button

In this mode the compressor will respond to operator inputs from the HMI screen. They Capacity and Volume Slide Valve Position can be adjusted by the up and down arrows that appear on the main screen. The Position is a value 0% to 100%.

Remote Digital Button

The Compressor Controller must be in Local-Auto in order to activate Remote mode. In Remote Digital Mode the compressor is controlled by digital input signals.

1. Remote Start Input: Permissive Start/Stop for the compressor.

2. Remote Increase Input: Increases the Capacity Slide Valve.

3. Remote Decrease Input: Decrease the Capacity Slide Valve.

Remote Capacity Hold Button

From Local mode, Remote Caphold button can be pressed to put the compressor controller in Central mode. Central mode allows for external capacity control via communications link.

Central Mode

The remote PLC must maintain the Central mode operation by setting a tag in the compressor controller memory at least every 60 seconds. If the Central mode signal is lost during operation, the compressor controller reverts to Local Auto mode.

Stop Button

Pressing this button will stop the compressor unit. If the compressor unit is in Central mode when the Stop button is pressed, the compressor controller enters Local-Stop-Lock mode. The central system controller will no longer be able to command the compressor controller. To return to any operational mode, see the description of Local-Stop-Lock Release Button below.

NOTE: If the compressor unit does not stop, use the Emergency Stop button which is hardwired to the compressor controller. If this does not stop the compressor, then the main power disconnect must be opened.

Local-Stop-Lock Release Button

If the Stop key is pressed when in Central mode, the controller goes into Local-Stop-Lock mode. In Local-Stop-Lock the controller prevents the compressor from being remotely started. Press Local-Stop-Lock Release to take the Controller out of Local-Stop-Lock mode. The controller must then be set to the desired mode from the Unit Start button.

Alarm Reset Button

Pressing this button will reset the Alarms.

Exit Button

Pressing this button will close the Unit Start box.

Help Button

Pressing this button will open an additional help screen.

Device Names

To change Device Name, go into the “vilter Only” screen and press “Create Device Names.”

From the Device Name Screen, press the corresponding text window to change the name of the device.

Calibration Procedure of Optical Actuators

ACTUATOR MOTOR CONTROL MODULE CALIBRATION PROCEDURE

1. Open the plastic cover of the capacity motor by removing the four #10 screws. Cau-

tion: there are wires attached to the connector on the plastic cover. Handling the cover too aggressively could break the wires.

2. Gently lift the cover and tilt it toward the Turck connectors. Raise the cover enough to be able to press the blue calibrate button and be able to see the red LED on the top of assembly.

3. Press “Menu” on the main screen and then press the “Slide Calibration” button, to enter the slide calibration screen. Logging on with high-level access will prompt the following buttons to appear: Press to Calibrate, Inc. and Dec. (Capacity and Volume.) Touch the Press to Calibrate button – it turns green and states “Calibrate.” Set Min and Set Max buttons appear (Capacity and Volume.) If you are re-installing a new optical actuator reconnect the yellow and gray cables.

4. Press INC and DEC to move the slide valve and check for the correct rotation. See Table 1 for Actuator/command shaft rotation specifications.

5. Note: If the increase and decrease buttons do not correspond to increase or decrease shaft rotation, swap the blue and brown wires of the “power cable”. This will reverse the rotation of the actuator/command shaft.

6. Quickly press and release the blue push button on the actuator one time. This places the ac tuator in calibration mode. The red L ED will b egin flashing r apidly.

7. Note: When the actuator is in calibration mode, it outputs 0V when the actuator is running and 5V when it is still. Thus, as stated earlier, the actuator voltage will fluctuate during calibration. After the actuator has been calibrated, 0V output will correspond to the minimum position and 5V to the maximum position.

Calibration Procedure of Optical Actuators

Remove Cover Press Down On Photochopper

8. Note: The “Slide calibration” screen on the Control Panel has a “Current” window, which displays twice the actuator output voltage. This value, (the % volume and the % capacity) displayed in the “Current Vol” and Current Cap” Windows are meaningless until calibration has been completed.

9. Use the DEC button on the Control panel to drive the slide valve to its minimum “mechanical stop” position. Do not continue to run the actuator in

this direction after the slide valve has reached the stop. Doing so may cause damage to the actuator or the slide valve.

Press down on the photochopper shaft to disen-

gage the brake, releasing tension from the motor mount. Use the INC button to pulse the actuator to where the slide is just off of the mechanical stop and there is no tension on the motor shaft.

10. Quickly press and release the blue button on the actuator again. The red LED will now flash at a slower rate, indication that the minimum slide valve position (zero position) has been set.

11. Use the INC button on the Control Panel panel to drive the slide to its maximum “mechanical stop” position. Do not continue to run the ac-

tuator in this direction after the slide valve has reached the stop. Doing so may cause damage to the actuator or the slide valve. Press

down on the photochopper shaft to disengage the brake, releasing tension from the motor mount. Use the DEC button to pulse the actuator to where the slide is just off of its mechanical stop and there is no tension on the motor shaft.

Do not touch wires, may cause an

electrical shock!

12. Quickly press and release the blue button on the actuator one more time. The red LED will stop flashing. The actuator is now calibrated and knows the minimum and maximum positions of the slide valve it controls. Now the capacity or volume channel of the PLC can be calibrated.

13. Use the DEC button to move the actuator towards its minimum position while watching the millivolt readout on the Control Panel screen. Discontinue pressing the DEC button when the millivolt reading the “Current” window above the “Set Min” button is approximately 500 millivolts.

14. Now use the DEC and INC buttons to posi-

tion the slide valve until a value close to 300 millivolts is on the screen. Then, press the “Set Min” button in the capacity or volume slide valve window to tell the controller that this is the minimum millivolt position. Note: The value in the “Current Cap” or “Current Vol” window has no meaning right now.

Calibration Procedure of Optical Actuators

15. Use the INC button to rotate the actuator towards its maximum position while watching the millivolt readout on the controller screen. Discontinue pressing the INC button when the millivolt reading in the “Current” window is approximately 4800 millivolts. You are nearing the mechanical stop position.

16. Pulse the INC button to carefully move the slide valve until the millivolt readout “saturates”, or stops increasing. This is around 4800 millivolts Record millivolt maximum reading.

17. Pulse the DEC button until the millivolts just start to decrease. (This is the point where the channel drops out of saturation). Adjust millivolt value to 300 millivolts below recorded maximum millivolts in step #17.

18. Press the “Set Max” button.

19. Press the “Main” button to complete calibration and exit the “Slide Calibration” screen. The controller will automatically energize the actuator and drive it back to its minimum position (below 5%) for pre-start-up.

20. Note: Now the “Current Cap” or the “Current Vol” value will be displayed in the window on the “Main” screen and the “Slide Calibration” screen.

21. Gently lower the plastic cover over the top of the actuator to where it contacts the base and O-ring seal. After making sure the cover is seated properly, gently tighten the four #10 screws. Caution: The plastic cover

will crack if the screws are over tightened.

22. Enable the “Slide Non-Movement Alarm” by going to the “Setup” menu and choosing “Alarm Enable” for the “Slide Non-Movement Option”.

23. This completes the calibration for this channel either capacity or volume. Repeat the same pro ce dure to t he other chann el.

Installation Instructions For Replacement Of Optical Actuator

CAUTION: WHEN INSTALLING THE OPTICAL SLIDE

MOTOR, LOOSEN LOCKING COLLAR BEFORE SLIDING THE COLLAR DOWN THE SHAFT. DO NOT USE A SCREWDRIVER TO PRY LOCKING COLLAR INTO POSITION.

OVERVIEW

Calibration of an optical slide valve actuator is

a two step process that must be done for each actuator installed on the compressor. The steps are as follows.

1. The actuator motor control module, located inside the actuator housing, is calibrated so that it knows the minimum and maximum rotational positions of the slide valve it controls. The calibrated actuator will output 0 VDC at the minimum position and 5 VDC at maximum position.

2. After the actuator motor control module has been calibrated for 0-5 Volts, the controlling channel corresponding to the actuator motor (either the capacity or volume) has to be calibrated. This instructs the PLC to learn the rotational 0% position & rotation 100% position of the slide valve travel.

Please Note:

Because there is an optical sensor on this motor,

DO NOT attempt to calibration in direct sunlight.

3. Before applying power to the PLC disconnect the gray and yellow cable.

4. Power the PLC back on.

5. Refer to Calibration Procedure of Optical Actua-

tors.

Slide Valve Actuator Theory of Operation

The slide valve actuator is a gear-motor with a position sensor. The motor is powered in the forward and reverse directions from the main computer in the control panel. The position sensor tells the main computer the position of the slide valve. The main computer uses the position and process information to decide where to move the slide valve next.

The position sensors works by optically counting motor turns. On the shaft of the motor is a small aluminum “photochopper.” It has a 180 degree fence that passes through the slots of two slotted optocouplers. The optocouplers have an infrared light emitting diode (LED) on one side of the slot and a phototransistor on the other. The phototransistor behaves as a light controlled switch. When the photochopper fence is blocking the slot, light from the LED is prevented from reaching the phototransistor and the switch is open. When photochopper fence is not blocking the slot, the switch is closed.

This scheme is not foolproof. If the motor is moved manually while the power is off or the motor brake has failed, allowing the motor to free wheel for too long after the position sensor looses power, the actuator will become lost.

A brake failure can sometimes be detected by the position sensor. If the motor never stops turning after a power loss, the position sensor detects this, knows it will be lost, and goes immediately into calibrate mode when power is restored.

As the motor turns, the photochopper fence alternately blocks and opens the optocoupler slots, generating a sequence that the position sensor microcontroller can use to determine motor position by counting. Because the motor is connected to the slide valve by gears, knowing the motor position means knowing the slide valve position.

During calibration, the position sensor records the high and low count of motor turns. The operator tells the position sensor when the actuator is at the high or low position with the push button. Refer to the calibration instructions for the detailed calibration procedure.

The position sensor can get “lost” if the motor is moved while the position sensor is not powered. To prevent this, the motor can only be moved electrically while the position sensor is powered. When the position sensor loses power, power is cut to the motor. A capacitor stores enough energy to keep the position sensor circuitry alive long enough for the motor to come to a complete stop and then save the motor position to non-volatile EEPROM memory. When power is restored, the saved motor position is read from EEPROM memory and the actuators resumes normal function

Slide Valve Actuator Troubleshooting Guide

The actuator cannot be calibrated

Dirt or debris is blocking one or both optocoupler slots

The photochopper fence extends less than about half way into the optocoupler slots

The white calibrate wire in the grey Turck cable is grounded

Dirt and/or condensation on the position sensor boards are causing it to malfunction

The cali brate button is stu ck down

The position sensor has failed

Push button is being held down for more that ¾ second when going through the calibration procedure

Clean the optocoupler slots with a Q-Tip and rubbing alcohol.

Adjust the photochopper so that the fence extends further into the optocoupler slots. Make sure the motor brake operates freely and the photochopper will not contact the optocouplers when the shaft is pressed down.

Tape the end of the white wire in the panel and make sure that it cannot touch metal

Clean the boards with an electronics cleaner or compressed air.

Try to free the stuck button.

Replace the actuator.

Depress the button quickly and then let go. Each ¾ second the button is held down counts as another press.

The actuator goes into calibration mode spontaneously

The actuator goes into calibration mode every time power is restored after a power loss

The white calibrate wire in the grey Turck cable is grounding intermittently

A very strong source of electromagnetic interference (EMI), such as a contactor, is in the vicinity of the actuator or grey cable

There is an intermittent failure of the position sensor

The motor brake is not working properly (see theory section above.)

Tape the end of the white wire in the panel and make sure that it cannot touch metal.

Increase the distance between the EMI source and the actuator.

Install additional metal shielding material between the EMI source and the actuator or cable.

Replace the actuator.

Get the motor brake to where it operates freely and recalibrate.

Replace the actuator.

Slide Valve Actuator Troubleshooting Guide

The actuator does not transmit the correct position after a power loss

There is a rapid clicking noise when the motor is operating

The motor operates in one direction only

The motor was manually moved while the position sensor was not powered.

The motor brake is not working properly

The position sensor’s EEPROM memory has failed

The photochopper is misaligned with the slotted optocouplers

The photochopper is positioned too low on the motor shaft.

A motor bearing has failed

There is a loose connection in the screw terminal blocks

There is a loose or dirty connection in the yellow Turck cable

Recalibrate.

Get the motor brake to where it operates freely and then recalibrate.

Replace the actuator.

Try to realign or replace the actuator.

Adjust the photochopper so that the fence extends further into the optocoupler slots.

Replace the actuator.

Tighten.

Clean and tighten.

The motor will not move in either direction

The motor runs intermittently, several minutes on, several minutes off

The position sensor has failed

There is a broken motor lead or winding

The thermal switch has tripped because the motor is overheated

Any of the reasons listed in “The motor operates in one direction only”

The command shaft is jammed

Broken gears in the gearmotor

Motor is overheating and the thermal switch is tripping

Replace the actuator.

The motor will resume operation when it cools. This could be caused by a malfunctioning control panel. Consult the factory.

See above.

Free the command shaft.

Replace the actuator.

This could be caused by a malfunctioning control panel. Consult the factory.

Slide Valve Actuator Troubleshooting Guide

The motor runs sporadically

The motor runs but output shaft will not turn

Bad thermal switch

Any of the reasons listed in “The motor will not move in either direction”

Stripped gears inside the gear motor or the armature has come un-pressed from the armature shaft

Replace the actuator.

See above.

Replace the actuator.

Command Shaft Rotation and Travel

NOTES:

a) The large gear on the command shaft has 50 teeth. The teeth are counted when moving the com-

mand shaft from the minimum stop position to the maximum stop position.

b) The manual operating shaft on the gear motor should be turned the opposite direction of the desired

command shaft rotation.

c) The capacity and volume control motors are equipped with a brake, if it is necessary to operate the

control motors manually, the brake must be disengaged. The brake can be disengaged by pushing on the motor shaft on the cone end. The shaft should be centered in its travel. Do not use excessive force manually operating the motor or damage may result.

Safety Failure Message

Suction Pressure SP#1 Fail - This message will appear when the suction pressure falls below the safety setting of the Lo Suction Pressure

Trip Setpoint No. 1. In addition, this message will appear when the suction pressure reading rises above 300 PSI, indicating an open transducer or bad analog channel.

Suction Pressure SP#2 Fail - This message will appear when the suction pressure falls below the safety setting of the Lo Suction Pressure

Trip Setpoint No. 2. In addition, this message will appear when the suction pressure reading rises above 300 PSI, indicating an open transducer.

Discharge Pressure SP#1 Fail – This message will appear when the discharge pressure exceeds the safety setting of the Hi Dsch Press Trip

Setpoint No. 1 . In addition, this message will appear when the discharge pressure reading falls below 30” Hg, indicating a shorted transducer.

Discharge Pressure SP#2 Fail –

This message will appear when the discharge pressure exceeds the safety setting of the Hi Dsch Press Trip

Setpoint No. 2 . In addition, this message will appear when the discharge pressure reading falls below 30” Hg, indicating a shorted transducer.

Suction Temp Fail – This message will appear when the suction temperature falls below the safety setting of the Low Suction

Temperature Trip setpoint. In addition, this message will appear when the suction temperature rises above 400 degrees, indicating an open RTD.

Discharge Temp Fail – This message will appear when the discharge temperature rises above the safety setting of the High Dis-

charge Temperature Trip setpoint. In addition, this message will appear when the discharge temperature falls below -30 degrees, indicating a shorted RTD.

Safety Failure Message

Oil Separator Start Temp Fail – This message will appear when the Oil Separator Temp is below the Low Oil Separator Start Temp Trip

setpoint. In addition this message will appear after the Oil Separator Temp Safety Changeover timer times out and the Oil Separator temperature fails to rise above the Low Oil Separator Start Temp Reset after the compressor is started.

Oil Separator Run Temp Fail – This message will appear when the Oil Separator Temp is below the Low Oil Separator Run Temp Reset

setpoint after the Oil Separator Temp Safety Changeover timer times out.

Percent Capacity Fail – This message will appear if the percent capacity reading exceeds 300% or goes below –15%.

Percent Volume Fail – This message will appear if the percent volume reading exceeds 300% or goes below –15%.

Low Control Temperature Fail –

This message will appear when the Process Control Temperature falls below the safety setting of the Lo

Control Temperature Trip Setpoint. In addition, this message will appear when the Process Control Temperature rises above 300 degrees F, indicating an open RTD.

Low Start Oil Pressure Fail – This message will appear with the Prelube Oil Pressure (Manifold minus Discharge) has remained below the

Prelube Oil Pressure Reset setpoint. The Prelube Oil Pressure must be above the Prelube Oil Pressure for a time period of the Minimum Compressor Prelube time. It will continue to try to do this for a time period of the Prelube Oil Pump Time Limit. When the Prelube Oil Pressure fails to achieve this, then the failure message will occur.

Low Oil Pressure Fail – This message will appear when the Running Oil Pressure (Manifold minus Suction) has remained below the

low Oil Pressure Reset setpoint when the Oil Pressure Bypass at Compressor Start timer times out. This message will also appear when the Running Oil Pressure falls below the Low Oil Pressure trip setpoint after the Oil Pressure Bypass at Compressor Start timer times out.

Low Oil Injection Temp Fail – This message will appear when the Oil Injection temperature falls below the Low Oil Injection Temperature

trip setpoint. This message will also appear when the Oil Injection temperature fails to rise above the Low Oil Injection Temperature reset setpoint after the Low Oil Injection Temp Bypass timer times out.

Hi Oil Injection Temp Fail – This message will appear when the Oil Injection temperature rises above the High Oil Injection Temperature

trip setpoint.

Manifold Pressure Fail – This message will appear with the manifold pressure rises above 300 PSI or falls below 30” Hg.

Safety Failure Message

Filter Inlet Pressure Fail – This message will appear with the manifold pressure rises above 300 PSI or falls below 30” Hg.

Start Filter Diff Press Fail – This message will appear if the Filter Differential pressure rises above the High Fltr Diff Press – Start

setpoint before the Filter Differential Pressure Safety Changeover timer times out.

Run Filter Diff Press Fail – This message will appear if the Filter Differential pressure rises above the High Fltr Diff Press Run

setpoint after the Filter Differential Pressure Safety Changeover timer times out.

Maximum Amperage Fail – This message will appear if the motor amperage rises above the Hi Motor Amps trip setpoint.

Motor Starter Aux Contact Fail – This message will appear if the Motor Auxiliary contact fails to close before the Compressor Starter

Auxiliary Contact Bypass timer times out. Refer to wiring diagram.

Auxiliary Safety#1 Input Fail –

This message will appear when power is removed from the input module that is designated as “Aux-

iliary #1 Safety” (please refer to your wiring diagram).

Low Oil Separator Level Fail – This message may appear when power is removed from the input module that is designated as “Low

Separator Oil Level Trip” (please refer to your wiring diagram). This safety has an associated delay. The associated delay timer is the Low Oil Separator Level Bypass Timer. This safety will activate only after the oil level has been low after the timer times out.

Version Screen

This screen lists a hard-coded version description of the PanelView-Plus HMI file and active information regarding the ControlLogix processor.

Active Logix processor information are real-time statuses via the Ethernet link between the HMI and the Logix processor.

Logix processor information displayed:

1. Processor Name: Name assigned by Vilter to the Logix processor

2. Mode: Remote Run, Run, Program

3. Revision: Revision of the processor

4. Status: OK, Faulted

Date and Time of both the PanelView Plus unit and of the Logix processor are displayed here for operator or service technician use. Confirm that the dates and times of the HMI and Logix processor are equal. If unequal, follow instructions for setting the date and time from the Vilter Only screen.

Note: Access to the Vilter Only screen is password protected.

Trend Charts

The trend analysis screens display historic data of the last 300,000 records of analog values.

The following historical chart periods are available by touching the buttons along the right side of the screen: 3 minutes, 15 minutes, 30 minutes, 1 hour, 2 hours, 6 hours, 12 hours, 1 day, 2.5 days, 5 days. *

Back button: Displays chart of previous period. For example, if the current 1 hour period is displayed and the time is 11AM, pressing the Back button will display the logged data from 9AM to 10AM.

Forward button: Displays the chart of the next period. For example, if the 1 hour period of 4PM to 5PM is displayed, pressing the Forward button will display the data of 5PM to 6PM provided that data exists.

Home button: Returns display from any displayed period to current period time with current time oriented to the left side of the chart. For example, if the real time is 7 PM and the chart is displaying the period of 7PM to 8PM. After pressing the End button, the chart will continue to update.

End button: Returns display from any displayed period to current period with current time oriented to the right side of the chart. For example, if the real time is 7PM and the chart is displaying the period of 1PM to 2PM, pressing the End button will display the period of 6PM to 7PM. After pressing the End button, the chart will continue to update with the time period moving later per real time.

Pause button: freezes the chart of period at the current time. Touch the Pause button again to activate the chart to update at the real time.

Next Pen button: Displays the individual scaling of each pen along the Y-axis of the chart. The scaling is colored the same as the pens which are shown on the chart legend. This is useful on Page 2 of the chart of motor amperage, capacity, and volume since the amp scale would typically require a larger range than 0-100 whereas the capacity and volume will remain within 0 to 100 (%.) This allows the viewer to easily observe the relationship between data.

Trend Charts

The standard values recorded are:

Pressures - displayed on page 1: Suction Pressure Displayed as a bold, solid blue line Discharge Pressure Displayed as a bold, solid bright-green line Oil Injection Differential Pressure Displayed as a bold, solid red line Oil Filter Differential Pressure Displayed as a bold, solid pink line

Temperatures - displayed on page 1: Suction Temperature Displayed as a dashed, white line Discharge Temperature Displayed as a dashed, dark-grey line Oil Separator Temperature Displayed as a dashed, yellow line Oil Injector Temperature Displayed as a dashed, dark-green line

Other Values - displayed on page 2: Compressor Motor Amperage Displayed as a bold, solid blue line Capacity (%) Displayed as a bold, solid bright-green line Volume (%) Displayed as a bold, solid red line

* As a standard, values of 11 analog items are recorded every 15 seconds. This allocates 27,272 records of each item producing 4.73 days worth of historical data. Addition of items will decrease the total record period. Historical data is stored in the flash memory card located in the back of the PanelView HMI.

Troubleshooting:

Problem: Trend charts no longer display historical data but only update with real-time data which reinitializes each time the chart is displayed.

Cause: Time and/or Date of HMI was changed so logged data file cannot be sensible.

Solution: From the Vilter Only screen (password protected) Clear the log files of the PanelView.

a. Touch or scroll to the File Management field then touch the Enter button. b. Touch or scroll to the Delete Files field, then touch the Enter button c. Touch or scroll to the Delete Log Files field and touch the Enter button.

DO NOT DELETE APPLICATIONS! DO NOT DELETE FONTS!

d. Touch “Yes” to delete the log files. e. Touch the Close button twice to return to the Terminal Settings screen. f. Touch the Close button again to exit the Terminal Settings screen. g. Touch the Reset button then the Yes button to reset the PanelView

Captured Data at Shutdown

The Captured at Shutdown screen shows data captured prior to compressor

shutdown.

ITEM QUANTITY MANUFACTURE

VILTERPART

NUMBER DESCRIPTION

CL1,DIV 2

APPROVED ITEM QUANTITY MANUFACTURE

VILTERPART

NUMBER DESCRIPTION

CL1, DIV 2

APPROVED ITEM MANUFACTURE

VILTERPART

NUMBER DESCRIPTION 1 1 ALLEN BRADLEY 3252AA COMPACT LOGIXPROSESSOR 1.5MMEMORY WITHETHERNET YES 26 14 ALLENBRADLEY 3090BCD2 FUSE BLOCKTERMINAL YES FU1 ALLEN-BRADLEY 3090DD2 10 AMPTIME DELAY FUSE 2 1 ALLEN BRADLEY 3252E COMPACT LOGIX16POINT 120VACINPUT MODULE YES 27 1 ALLEN BRADLEY 2011P MOMENTARYPUSH-BUTTON YES FU2 ALLEN-BRADLEY 3090DD2 10 AMPTIME DELAYFUSE 3 1 ALLEN BRADLEY 3252K COMPACT LOGIX16POIN

TRELAY OUTPUTMODULE

YES 28 1 ALLEN BRADLEY 2011N MANTAINED ILLUMINATED

MUSHTROOMEDPUSH-PULL BUTTON

YES FU3 ALLEN-BRADLEY 3090DD2 10 AMPTIME DELAY FUS

E 4 1 ALLEN BRADLEY 3252P2 COMPACT LOGIX24VDCPOWER SUPPLY YES 29 1 ALLEN BRADLEY 2011G EXTRACONTACTF ORE-STOP 1N.C. AND1 N.O. YES FU4 ALLEN-BRADLEY 3090DD2 10 AMP TIMEDELAY FUSE 5 2 ALLEN BRADLEY 3252N COMPACT LOGIX6 CHANNELRTDMODULE YES 30 2 TRANCEND 3485FC MEMORY CARDS YES FU5 ALLEN-BRADLEY 3090RD2 4 AMPTIME DLAY FUSE 6 1 ALLEN BRADLEY 3252Y2 COMPACT LOGIX8 OUTPUTANALOG MODULE YES 31 11 MAGNACRAFT 3091AD2 8 PIN/DPDT12 AMP RELAY YES FU6 ALLEN-BRADLEY 3090RD2 4 AMPTIME DLAYFUSE 7 1 ALLEN BRADLEY 3252M COMPACTLOGIX 8CHANNEL ANALOGCUR/VOLT INPUTMODULE YE S 32 11 MAGNACRAFT 3091BD2 OCTAL 8PIN RELAYB ASE YE S FU7 ALLEN-BRADLEY 3090BD2 2 AMPTIME DLEAYFUSE 8 1 ALLEN BRADLEY 3252L COMPACTLOGIX4 CHANNELANALOG CUR/VOLTINPUT MODULE YES 33 2 MAGNACRAFT 3091EFS 11 PIN/3PDT 2AMP RELAY YE S FU8 ALLEN-BRADLEY 3090BD2 2 AMPTIME DLEAYFUSE 9 1 ALLEN BRADLEY 3252S COMPACTLOGIX RIGHTEND CAP TERMINATOR YES 34 2 MA GNACRAFT 3091EFS1 OCTAL11 PINRELAY BASE YE S FU9 ALLEN-BRADLEY 3090RD2 4 AMPTIME DLAYFUSE

10 1 ALLEN BRADLEY 3252U1 INDUSTRAL ETHERNET SWITCH, 5PORT RJ45 10/100TX YES 35 1 PULS 3131A DC POWERSUPPLY ,120VAC INPUT,24VDC-1.3A OUTPUT,CLASS 2 YES FU10 ALLEN-BRADLEY 3090BD2 2 AMP TIMEDLEAY FUSE 11 1 ALLEN BRADLEY 3252G1 PANELVIEW 10000, OPERATORINTERFACE YES 36 1 PULS 3131K DCPOWE RSUPPLY, 120VACINPUT, 24VDC-10AOUTPUT YES FU11 ALLEN-BRADLEY 3090BD2 2AMP TIME DLEAYFUSE 12 2 ALLEN BRADLEY 3089QB BLACK TERMINAL BLOCKS YES 37 1 PULS 3131L UPS 24VDCINPUT,24VDC-10A OUTPUT YES FU12 ALLEN-BRADLEY 3090BD2 2 AMPTIME DLEAYFUSE 13 2 ALLEN BRADLEY 3089QA WHITE TERMINAL BLOCKS YES FU13 ALLEN-BRADLEY 3090BD2 2AMP TIME DLEAYFUSE 14 50 ALLENB RADLEY 3098AAD REDTERMINAL BLOCKS YES 15 24 ALLENB RADLEY 3089AAE YE LLOTERMINALBLOCKS YES 16 10 ALLENB RADLEY 3089AAF WHITETERMINAL BLOCKS YES 17 15 ALLENB RADLEY 3089AAG BLUE TERMINAL BLOCKS YES 18 1 ALLEN BRADLEY 3089M7 BLUE ENDBARRIERS YE S 19 15 ALLENB RADLEY 3089AAH BROWNTERMINAL BLOCKS YES 20 16 ALLENB RADLEY 3089RA GREEN/YELLOW GROUNDINGTERMINAL BLOCK YES 21 1 ALLEN BRADLEY 3089RB GROUNDINGTERMINAL BLOCKS YES 22 2 ALLEN BRADLEY 3089M6 GRAYEND BARRIERS YES 23 12 ALLENB RADLEY 3089SA PA RTITIONPLATES YE S 24 16 ALLENB RADLEY 3089NB END RETAINERS YES 25 - ALLENBRADLEY 3098E2 PLUG INJUMMPERS YES

COMPONENTIDENTIFICATION COMPONENTIDENTIFICATION FUSE REPLACEMENT

Contact Person Salesman Project Enginee r Type of Skid: Type of Gas: Type of System: Clas sification UL App r o val Power Voltage Available Control Voltage Estima ted Sh ip Date Engin eer ed Set Poi n t Info Order Rec eipt Date Job S ite S et poin t Info

EmersonClimate.com

Vilter Manufacturing LLC

P.O. Box 8904

Cudahy, WI 53110-8904

P: 414-744-0111

F: 414-744-1769

(04/2010) Emerson and Vilter are trademarks of Emerson Electric Co. or one of its affi liated companies.

35391CL Rev. 3

Emerson VSSG 291, VSSG 601, VSSG 341, VSSG 451, VSG 751 Software Manual

Specifications and Main Features

Frequently Asked Questions

User Manual