Ingersoll-Rand Intellisys System Controller Operators / Instruction Manual, Parts List

INTELLISYS SYSTEM CONTROLLER
OPERATORS/ INSTRUCTION MANUAL PARTS LIST
Before installation or starting the Intellisys System Controller for the first time, this manual should be studied carefully to obtain a clear knowledge of the unit and or the duties to be performed while operating and maintaining the unit.
RETAIN THIS MANUAL WITH UNIT. This Technical manual con­tains IMPORTANT SAFETY DATA and should be kept with the Intellisys System Controller at all times.
FORM: APDD 565B
April 2002
More Than Air . Answers.
Online answers: http://www.air.irco.com PHONE: 1-800-526-3615
CCN#: 80440290
AIR COMPRESSOR GROUP
BONDED WARRANTY & REGISTERED START UP
Warranty
The Company warrants that the equipment manufactured by it and delivered hereunder will be free of defects in material and workmanship for a period of twelve months (see extended airend warranty) from the date of placing the Equipment in operation or eighteen months (see extended airend warranty) from the date of shipment from Davidson, NC, whichev er shall first occur. The Purchaser shall be obligated to promptly report any failure to conf orm to this warranty, in wr iting to the Company in said period, whereupon the Company shall, at its option, correct such nonconformity, by suitable repair to such equipment or, furnish a replacement part F.O.B.point of shipment, provid­ed the Purchaser has stored, installed, maintained, and operated such Equipment in accordance with good indus­try practices and has complied with specific recommendations of the Company.Accessories or equipment furnished by the Company, but manufactured by others, shall carry whatever warranty the manufacturers have conveyed to the Company and which can be passed on to the Purchaser. The Company shall not be liable for any repairs, replacements, or adjustments to the Equipment or any costs of labor performed by the Purchaser or others without Company’s prior written approval.
The effects of corrosion, erosion, and normal wear and tear are specifically excluded.Performance warranties are limited to those specifically stated within the Company’s proposal. Unless responsibility for meeting such perfor­mance warranties are limited to specified tests, the Company’s obligation shall be to correct in the manner and for the period of time provided above.
THE COMPANY MAKES NO OTHER WARRANTY OR REPRESENTATION OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES OF MERCHANTABILI­TY AND FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED.
Correction by the Company of nonconformities whether patent or latent, in the manner and for the period of time provided above, shall constitute fulfillment of all liabilities of the Company for such nonconformities whether based on contract, warranty negligence, indemnity, strict liability or otherwise with respect to or arising out of such Equipment.
The purchaser shall not operate Equipment which is considered to be defective, without first notifying the Company
in writing of its intention to do so. Any such use of Equipment will be at Purchaser’s sole r isk and liability.
Limitation of Liability
The remedies of the Purchaser set forth herein are exclusive, and the total liability of the Company with respect to this contract or the Equipment and services furnished hereunder, in connection with the performance or breach thereof, or from the manufacture, sale, delivery, installation, repair or technical direction covered by or furnished under this contract, whether passed on contract, warranty negligence, indemnity, strict liability or otherwise, shall not exceed the purchase price of the unit of Equipment upon which such liability is based.
The Company and its suppliers shall in no event be liable to the Purchaser, any successors in interest or any ben­eficiary or assignee of this contract for any consequential, incidental, indirect, special or punitive damages arising out of this contract or any breach thereof, or any defect in, or failure of, or malfunction of the Equipment hereunder, whether based upon loss of use, lost profits or revenue, interest, lost goodwill, work stoppage, impairment of other goods, loss by reason of shutdown or non-operation, increased expenses of operation, cost of purchase of replace­ment power or claims of Purchaser or customers of Purchaser for service interruption whether or not such loss or damage is based on contract, warranty, negligence, indemnity, strict liability or otherwise.
©INGERSOLL-RAND COMPANY
This unit was purchased from
______________________________________________________ ______________________________________________________ ______________________________________________________ Ingersoll-Rand Company reserves the right to make changes or add
improvements without notice and without incurring any obligation to make such changes or add such improvements to products sold previously.
Customer Order No:______________________________________ Ingersoll-Rand Co.Order No:_______________________________ For ready reference:
Record the serial number and model number of your unit here. Serial Number:__________________________________________ Model Number:__________________________________________
NGERSOLrAND
INTELLISYS
ALARM SEQUENCE LOADED SEQUENCE LOADED SEQUENCE LOADED SEQUENCE LOADED
POWER
SEQUENCING
START
SET
SEQUENCER
STATUS
COMPRESSOR
STATUS
SEQUENCING
SEQUENCING
STOP
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
1
INGERSOLrAND INTELLISYS
SEQUENCE
UNIT 1
LOADED
SEQUENCE
UNIT 2
UNIT 3
UNIT 4
POWER
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCER
STATUS
SEQUENCING
START
COMPRESSOR
STATUS
SET
NOTICE
SEQUENCING
STOP
SEQUENCING
ALARM
SEQUENCE
UNIT 5
LOADED
SEQUENCE
UNIT 6
LOADED
SEQUENCE
UNIT 7
LOADED
SEQUENCE
UNIT 8
LOADED
INGERSOLL-RAND®
0.0 SAFETY AND WARNINGS
1.0 INTRODUCTION
1.1 application
1.2 features
2.0 RECEIPT OF EQUIPMENT
3.0 INSTALLATION
3.1 ISC mounting
3.2 pressure transducer mounting/piping
3.3 pressure transducer wiring
3.4 ISC power wiring
3.5 ISC communication wiring
3.6 power on confirmation
3.7 pressure transducer calibration
4.0 OPERATION
4.1 operator panel layout
4.1.1 sequencer start button
4.1.2 sequencer stop button
4.1.3 sequencer status button
4.1.4 compressor status/right arrow button
4.1.5 set button
4.1.6 up and down arrow buttons
4.1.7 powerled
4.1.8 sequencerled
4.1.9 compressor unit status led’s
4.1.10 alarmled
4.2 setting up the ISC
4.2.1 initialization
4.2.2 pressure set up and control
4.2.3 sequence set up
4.2.4 compressor control
4.2.5 sequence rotation modes
4.3 starting and stopping
4.4 ISC status
4.5 compressor status
4.6 alarms
5.0 TROUBLE SHOOTING CHART
6.0 REFERENCE DRAWINGS
6.1 ISC set point map
6.2 compressor controlset points
6.3 initial set upset points
6.4 pressure settingsset points
6.5 pressure controlset points
6.6 sequence set upset points
6.7 sequence rotation modeset points
6.8 installing modular plug connector
6.9 modular plug connections
6.10 electrical schematic
6.11 general arrangement
6.12 typical ISC installation
6.13 typical air system
7.0 PARTS LIST
8.0 MAINTENANCE RECORDS

TABLE OF CONTENTS

2

0.0 SAFETY AND WARNINGS

Before you install this Intellisys System Controller (ISC) you should take the time to carefully read all the instruc­tions contained in this manual, and the compressor man­ual.
Electricity and compressed air have the potential to cause severe personal injury or property damage. The operator should use common sense and good work­ing practices while operating and maintaining this unit. All applicable codes should be strictly adhered to.
Maintenance should be done by qualified personnel, adequately equipped with proper tools.
3
NGERSOLrAND INTELLISYS
ALARM SEQUENCE LOADED SEQUENCE LOADED SEQUENCE LOADED SEQUENCE LOADED
POWER
SEQUENCING
START
SET
SEQUENCER
STATUS
COMPRESSOR
STATUS
SEQUENCING
SEQUENCING
STOP
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
NGERSOLrAND INTELLISYS
ALARM
SEQUENCE LOADED SEQUENCE LOADED SEQUENCE LOADED SEQUENCE LOADED
POWER
SEQUENCING
START
SET
SEQUENCER
STATUS
COMPRESSOR
STATUS
SEQUENCING
SEQUENCING
STOP
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
INGERSOLrAND INTELLISYS
SEQUENCE
UNIT 1
LOADED
SEQUENCE
UNIT 2
POWER
LOADED
SEQUENCE
UNIT 3
UNIT 4
INGERSOLrAND INTELLISYS
SEQUENCE
UNIT 1
LOADED
SEQUENCE
UNIT 2
POWER
LOADED
SEQUENCE
UNIT 3
UNIT 4
SEQUENCER
LOADED
STATUS
SEQUENCE
LOADED
SEQUENCING
SET
START
COMPRESSOR
ALARM
SEQUENCE
UNIT 5
LOADED
SEQUENCE
UNIT 6
LOADED
SEQUENCING
SEQUENCE
UNIT 7
LOADED
STATUS
SEQUENCE
UNIT 8
LOADED
SEQUENCING
STOP
SEQUENCER
LOADED
STATUS
SEQUENCE
LOADED
SEQUENCING
START
NOTICE
ALARM
SEQUENCE
UNIT 5
LOADED
SEQUENCE
UNIT 6
LOADED
SEQUENCING
SEQUENCE
COMPRESSOR
STATUS
SET
UNIT 7
LOADED
SEQUENCE
UNIT 8
LOADED
SEQUENCING
STOP

1.0 INTRODUCTION

One Intellisys System Controller (ISC) can sequence both rotary and reciprocating compressors.To do this, it must have software EPROM version 1.1 or higher.

1.1 APPLICATION The ISC will operate any size SSR rotary, Sierra oilfree rotary or Intellisys equipped recipro­cating compressor.Recip units can be two, three or five step loading, whether inlet valve or clearance pocket controlled.

Intellisys controlled compressors connect directly to the ISC and communicate through twisted pair cable.Rotary non-Intellisys controlled compressors require an Ingersoll-Rand supplied interface device to be installed between the compressor and the ISC.An Intellisys Retrofit Kit is available to upgrade Ingersoll-Rand recip PHE, LLE or XLE compressors which are not presently equipped with Intellisys.

1.2 FEATURES The ISC is capable of controlling the loading and unloading of multiple air compressors for the purpose of keeping a compressed air systems pressure at or near a user set value.It is a microprocessor based, self-contained unit that is mounted and powered inde­pendently from any compressor.

The ISC has a variety of simple, user adjustable modes of operation that enable it to be customized for specific compressed air system conditions. In response to sys­tem air pressure variations, as measured by the ISC’s own sensor, it adds or subtracts air compressors in an order selected by the user.
There are many conveniences provided by the ISC that simplify both its set up and use.The following list outlines its many installation and operational features.
1.The ISC can manage from 2 to 8 air compressors.
2. Compressors can be either Intellisys or preIntellisys (rotary) models.
3. System air pressure control is based on a single pres­sure point, not multiple pressure bands.
4. System air pressure settings can be user programmed to change, based on preset time of day and day of week.
5. Load and unload delay times can be independently set to account for air system characteristics.
6.The ISC can be located remotely from the air com­pressors.
7. Connection to compressors is by telephone-type wire and connectors.
8.There can be up to 8 user programmable compressor sequences.
9. Rotation from one sequence to another can be user programmed based on running time, time of day and day of week, or manually.
10.The ISC will not start more than one compressor at a time.
11. Smooth rotation of sequences will avoid disruptions to system air pressure.
12. ISC operating parameters can be changed without stopping the system.
13.The ISC will automatically resume operation following a power outage.
4

2.0 RECEIPT OF EQUIPMENT

When you receive the Intellisys System Controller (ISC) please inspect it closely. Any indication of careless han­dling by the carrier should be noted on the delivery receipt especially if the ISC will not be immediately unboxed. Obtaining the delivery mans signed agreement to any noted damages will facilitate any future insurance claims.
IMPORTANT
READ THIS
LOST OR DAMAGED GOODS
THOROUGHLY INSPECT THIS SHIPMENT
IMMEDIATELY UPON ARRIVAL
OUR RESPONSIBILITY FOR THIS SHIPMENT CEASED WHEN THE CAR­RIER SIGNED BILL OF LADING
If goods are received short or in damaged condition, it is important that you notify the carrier and I nsist 0 n a notation of the loss or damage across the face of the freight bill. Otherwise no claim can be enforced against the trans­portation company.
If concealed loss or damage is discovered, notify your carrier at once and request an inspection This is absolutely necessary. Unless you do this the carrier will not entertain any claim for loss or damage.The agent will make an inspection and grant a concealed damage notation. If you give the trans­portation company a clearreceipt for goods that have been damaged or lost in transit, you do so at your own risk and expense.
WE, AT I-R, ARE WILLING TO ASSIST YOU IN EVERY POSSIBLE MAN­NER TO COLLECT CLAIMS FOR LOSS OR DAMAGE. BUT THE WILL­INGNESS ON OUR PART DOES NOT MAKE US RESPONSIBLE FOR COLLECTION OF CLAIMS OR REPLACEMENT OF MATERIAL. THE ACTUAL FILING AND PROCESSING OF THE CLAIM IS YOUR RESPON­SIBILITY.
Ingersoll-Rand Company Davidson, North Carolina
APODGFO-99-79
5

3.0 INSTALLATION

Before beginning Intellisys System Controller (ISC) installation and system operation, the following require­ments and recommendations must be satisfied.
1. Each Intellisys compressor must have its controller software revision at or above a certain minimum level to work with the ISC.The machine types and the required software EPROM minimum version levels are listed below. Check each machine to be controlled by the ISC for appropriate EPROM’s. If the EPROM is not of the correct minimum version level, an appropr iate EPROM may be ordered from your local Ingersoll-Rand Distributor or Air Center.
Machine EPROM Min. Type Version Level
U-Series (10-40 Horsepower) 9.3 15-50 Horsepower SE 1.1 SSR 50-450 Horsepower 1.9 SSR 50-450 Horsepower 2.0
Extended Memory Sierra 100-200 Horsepower 2.0 Recip 1.5
2.The Automatic Start/Stop feature is required to be installed on each compressor to receive the full energy saving benefits of the ISC.Compressors without the Auto Start/Stop function will continue to run after the ISC tells them to unload. Compressors with Auto Start/Stop could stop themselves after their stop-time criteria are met.
3.The mounting location of the ISCs pressure transduc­er is very important. The ISC will load and unload com­pressors based on the air pressure it measures at the transducers location.Because the transducer will typi­cally be mounted in a receiver tank or large common air header, it will likely be reading pressures lower than the compressor discharge pressures.The transducer loca­tion and the user-set TARGET PRESSURE must allow for these pressure differences. Be sure to follow the instructions for setting the TARGET PRESSURE as detailed in Section 4.2.2 PRESSURE SET UP AND CONTROL.
Perfor m the following tasks to install the ISC system. Each is described in numbered steps that can be checked off to help ensure a trouble-free installation.
ISC Mounting Pressure Transducer Mounting/Piping Pressure Transducer Wiring ISC Power Wiring ISC Communication Wiring Power On Confirmation Pressure Transducer Calibration

3.1 ISC MOUNTING

1.The ISC can be easily installed on any suitable sur­face in the general vicinity of the air compressors.Refer to the typical air system drawing (Figure 6.12) for requirements.
2. Mount the ISC and associated wir ing conduits using general arrangement drawing (Figure 6.10) for mounting dimensions.

3.2 PRESSURE TRANSDUCER MOUNTING/PIPING

1. Choose one of two typical locations for the transducer. It can be installed in a receiver tank or in a common dis­charge air header, as long as either one serves all the sequenced compressors. See Figure 3.2-2 for Choice A, the tank; and Choice B, the header.The tank is the rec­ommended location as long as it is close to the com­pressors.
2. In either location, mount the transducer with a dripleg and isolation valve to allow for calibration and repairs. Mount as shown in Figure 3.2-1, and refer to the general arrangement drawing (Figure 6.10) for mounting dimen­sions.
3. If the transducer is to be mounted in the air header, Choice B, connect it to the TOP of the header to prevent moisture accumulation in the transducer. If the header runs at floor level, mount the transducer to the wall above the header and connect it to the top of the header using pipe or tubing.This will prevent moisture accumu­lation and damage to the transducer.
NOTE: If there are dryers or filters installed in the sys­tem between the compressors and the ISC pressure transducer, the ISC’s user-set TARGET PRESSURE must be adjusted to compensate for the pressure drop caused by these devices.Proper adjustment must be done to prevent overloading the compressor main drive motors.This procedure is described in Section 4.2.2 PRESSURE SET UP and CONTROL.
FIGURE 3.2-1 PRESSURE TRANSDUCER
INSTALLATION
6
TO RECEIVER TANK OR AIR HEADER
DRIP LEG
3.3 PRESSURE TRANSDUCER WIRING
Before beginning any work on the ISC, open, lock and tag the electrical disconnect for the ISC.
1.The transducer cable assembly included in the ISC kit comes with a preattached transducer connector.Route the free end of the cable from the transducer to the ISC, preferably in its own grounded conduit.
2. Connect the cable to the terminal str ip inside the ISC using the electrical schematic in Figure 6.9 as a refer­ence. Be careful to match color codes and terminal
numbers.

3.4 ISC POWER WIRING

Before beginning any work on the ISC, open, lock and tag the electrical disconnect for the ISC.
1.The ISC will operate on either a 115 or 230 volts AC, single phase, 50 or 60 Hz power source.Position the voltage selection slide on switch SW1, located inside the ISC at the top left surface of the controller when viewed from the back, so the number showing on the switch matches the chosen power source voltage level.
2. Attach the ISC to the power source through an isola­tion circuit breaker, and protect all wires in conduit.The ISC draws less than 2 amps.Refer to the electrical schematic in Figure 6.9.
3. Confir m that all electrical connections are made prop­erly and tightened.
TRAP
FIGURE 3.2-2 ROTARY TWO COMPRESSOR SYSTEM
WITH PRESSURE TRANSDUCERS IN RECEIVER OR HEADER
7
STRAINER
SAFETY
VALVE
PRESSURE
GAUGE
RECEIVER
ISOLATION
VALVE
PRESSURE
DRAIN
TRANSDUCER
A
DRIP
LEG
DRIP
LEG
ISOLATION
VALVE
DRIP
B
PRESSURE
TRANSDUCER
LEG
ISOLATION
VALVE
DRIP
LEG
INGERSOLL-RAND
INGERSOLL-RAND
!
WARNING
Hazardous voltage. Can cause severe injury or death.
Disconnect power before servicing. Lockout/Tagout machine.
INGERSOLLrAND ®
3.5 ISC COMMUNICATION WIRING
1.The ISC is connected to each compressor using the telephone type wire supplied in the ISC kit. Cut appropr i­ate lengths for each compressor and route the wires in grounded electrical conduit.These wires should be the only wires in the conduit(s).
2. Install one modular plug (supplied in the kit, along with a special tool) on each end of each wire, one end in the compressor and one in the ISC enclosure. Refer to Figure 6.7 and 6.8 for instructions on the tool, and for proper wire color codes and pin numbers. Be careful to
match color codes and pin numbers.
3. Plug the compressor end of each wire into the com­munication port on the compressors Intellisys panel or Intellisys circuit board, whichever is appropriate.
4. Plug the ISC end of each wire into the communication port on top of the ISC controller that corresponds to the channel number you choose for each compressor. Compressors must be connected to ports in consecutive order, starting with port number 1. For example, if there are five compressors, they must be plugged into ports 1 through 5, with no unused ports between the first and the last.
5.Write the compressor model number and capacity, corresponding to each chosen channel/compressor num­ber, into Figure 6.2 at the back of this manual.

3.6 POWER ON CONFIRMATION

1. After all physical installation and wiring is complete, apply power to the ISC and confirm the “Power” LED is on.
If problems are encountered with any part of the ISC operation, refer to the Trouble Shooting Chart, Section 5.0.
2.The display will read “INITIALIZING”while the ISC automatically goes through its internal initialization logic which checks the pressure transducer and retrieves compressor status information.
3. Confir m the display reads READY TO STARTfollow­ing the initializing operation.
4. If necessar y, adjust the display contrast using the adjustment screw located at the top left surface of the controller when viewed from the back.

3.7 PRESSURE TRANSDUCER CALIBRATION

This should always be done after first installing the ISC, or after servicing the ISC or pressure transducer.
1.Vent the transducer to atmospheric pressure by clos­ing the isolation valve and opening the dripleg valve.
2.With the ISC stopped and the display showing READY TO STAR T, press the Up and Down Arrow keys simultaneously to start the ISCs autocalibrate rou­tine.The display will show the message “CALIBRATING” while calibration is taking place.When calibration is suc­cessful, the display will return to READY TO START”.If calibration is unsuccessful, the display will show “CALI- BRATION FAIL”. If this occurs, refer to Trouble Shooting Chart, Section 5.0.
3. Retur n the transducer to system air pressure . The ISC is now ready for entering the Set Points that
configure it for specific air system requirements.Proceed to Section 4.2 Setting Up The ISC, and follow the instructions there.
8
SEQUENCING
SEQUENCING
UNIT 1
4.0 OPERATION
9
FIGURE 4.0-1 INTELLISYS SYSTEM CONTROLLER PANEL
UNIT 2
UNIT 3
UNIT 4
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
INGERSOLrAND INTELLISYS
POWER
SEQUENCER
STATUS
SEQUENCING
START
SET
COMPRESSOR
STATUS
SEQUENCING
SEQUENCING
STOP
ALARM
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
SEQUENCE
LOADED
UNIT 5
UNIT 6
UNIT 7
UNIT 8

4.0 OPERATION

Air system performance can be enhanced by carefully setting up the Intellisys System Controller (ISC).This includes selecting operating parameters that customize the ISC for the specific air system to which it is attached. This section of the manual first describes the front panel controls of the ISC, then gives detailed instructions of how to use these controls to set up and/or adjust the operating parameters.This is followed with instructions for Starting and Stopping the ISC, plus how to view ISC or compressor status information, and finally a descrip­tion of Alarm conditions.
4.1 OPERATOR PANEL LAYOUT
The ISC panel contains seven buttons, twenty LED (light emitting diode) lamps and a sixteen character alphanu­meric display. The buttons are used for operator input, the LEDs indicate continuous status infor mation, and the display provides additional status information during the setting of Set Points (See Figure 4.0-1).
The following sections outline the functions of each but­ton and the meaning of each LED.The display mes­sages and their use are described in Section 4.2, Setting Up The ISC,where detailed instructions are provided for each ISC function.
The phrase Set Point Routine, used throughout this manual, refers to the procedures used for observing or changing the user-selectable variables in the ISC logic. Figure 6.1 provides a graphical “map”of the Set Points and how to get to each one.

4.1.1 SEQUENCER START BUTTON

Pressing this button will start the sequencing operation if pressed while the display shows “READY TO STAR T ”. The ISC will resume operation in the rotation mode (Timed, Event or Manual) that was active when the SEQUENCER STOP button was pressed. However, if the Set Point routine was used to change to a different rotation mode while the ISC was stopped, then operation in that new rotation mode will be started when the button is pressed.
Pressing this button while in the Sequencer Status or Compressor Status display modes will return the display to READY TO STAR Tif the ISC is not sequencing, but will display the System Pressure if it is sequencing.

4.1.2 SEQUENCER STOP BUTTON

Pressing this button will stop the sequencing operation if it is running, as indicated by the SequencingLED being on. It also retur ns all compressors to their local control. NOTE: At this time, each compressor might start, stop, load, or unload itself depending on its own local condi­tions and set points.
Pressing this button while the ISC is stopped will do a display test by lighting all the LED’s. This will also cause the version number of the ISC’s software to be dis- played.

4.1.3 SEQUENCER STATUS BUTTON

Repeatedly pressing this button will step the display through the ISC status messages. See Section 4.4 for details of the messages.
Pressing this button when in the Set Point routine will exit the routine.

4.1.4 COMPRESSOR STATUS/RIGHT ARROW BUTTON

Repeatedly pressing this button when not in the Set Point routine will step the display through the individual compressor status messages. See Section 4.5 for details of the messages.
When in the Set Point routine, this button is used as a Right Arrow to step through the five groups of Set Points, and to move the display cursor to the right. See Section
4.2 for details of these functions.
SEQUENCER
START
SEQUENCER
STOP
SEQUENCER
STATUS
COMPRESSOR
STATUS
10
UNLOADED
STOP
START
SET
SET

4.1.5 SET BUTTON

This button has numerous functions in the Set Point rou­tine. It is used to enter the routine, to step through por­tions of the routine and to lock innew set point values. See appropriate portions of Section 4.2 for details of its use.
A failure of the ISC’s pressure sensor is one reason for the AlarmLED to light up. Pressing the SET button when the sensor failure has been corrected will clear the alarm and turn off the LED. See Section 4.6 for details concerning all the alarm conditions that could cause the AlarmLED to be on, and when it will go off.

4.1.6 UP AND DOWN ARROW BUTTONS

These are used when in the Set Point routine for chang­ing Set Point values.They are also used in the Rotation Set Up portion to select among modes.
Pressing both buttons simultaneously will calibrate the pressure transducer when the display shows “READY T O START. See Section 3.7 for details on when and how to calibrate.
4.1.7 POWERLED
This LED lights to indicate there is power applied to the ISC and that its power supply is working.
4.1.8 SEQUENCINGLED
This LED lights to indicate the ISC SEQUENCER START button has been pressed and the ISC is sequencing compressors.
4.1.9 COMPRESSOR UNIT STATUS LED’s
There is a pair of status LEDs, SequenceandLoaded, for each compressor under the control of the
ISC. Each SequenceLED lights to indicate that com­pressor is in Sequence mode through the communica­tion channel to the ISC. Each LoadedLED lights to indicate that compressor is running loaded.
4.1.10 ALARMLED
An alarm status from any of the compressors, a commu­nication failure detected by the ISC or a system pressure transducer failure detected by the ISC will turn on this LED. See Section 4.6 for details of each alarm condition and how each is cleared.

4.2 SETTING UP THE ISC

Setting up, or programming, the ISC is done by entering chosen values for the ISC operating parameters, which are called set points. Figure 6.1 is a map of all the ISC set points and provides a quick reference of how to step the display to each one.Figures 6.2 through 6.7 list the set points, show the value limits for each one, and pro­vide space for recording the values chosen for specific air system requirements.
Before entering any set points, the following set up instruction sections should be read and used for decid­ing the exact set point values needed.While reading these sections and deciding on values, record them in the ISC Set Up Log, Figures 6.2 through 6.7 (or a copy of it).Then, using the entries in the log as a guide, exe­cute the steps listed below to enter each set point.
The following guidelines apply when viewing or changing set point values.
1. Press the SET button to enter the set point routine while the ISC is operating normally.
2. Press the Right Arrow (COMPRESSOR STATUS) but­ton to step between set point groups, and press the SET button to step between set points within each group.This is described in detail in the following sections and is out­lined by Figure 6.1.
3. Press Up or Down Arrow buttons to change set point values.
4. Press the Right Arrow button to select characters with­in set points, where appropriate.The selected character will be indicated by an underline cursor in the display.
SET
11
SET
POWER
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