PRESSURE PSI

KELE www.kele.com USA 901-937-4900 International 901-382-6084KELE www.kele.com USA 901-937-4900 International 901-382-6084

PRESSURE CONTROLLERMODEL PCM

Supply voltage 24 VDC +15%,-10% @75 mA max

Accuracy 2% of range includingnon-linearity and hysteresis

Output 4-20 mA sourcingOutput resolution 255 stepsOutput burden 650 maxPort connections 3/16'' dia suitable for

1/4'' OD polyethylene tubing

Max overpressure 800% of the pressure rangeTemp

Operating 32 to 125F (0 to 52C)Humidity

Limit 0% to 90% noncondensingLocal set point input Built-in three-wire potentio-

meter (factory setting) Remote set point input 4-20 mA, 1-5 VDCWeight 1.3 lb (0.61 kg)

DESCRIPTIONThe Model PCM Pressure Controller is a low-air pres-sure transducer combined with a microprocessor-basedproportional or Proportional plus Integral (PI) controller.The compact size and ease of installation and setupmakes this unit ideal for standard HVAC applications.Ranges are available from 0" to 2", 3", or 5'' W.C. Theset point adjustment knob is clearly marked with theappropriate scale for ease of use. All setup and tuning iseasily accomplished by DIP switches and bottle plugjumpers. Mounting is a snap with the convenient mount-ing tabs or with the DIN rail mounting option. Remote setpoint is also possible with voltage or milliamp signals.The Model PCM can be configured for direct or reverseacting control.

FEATURES

Proportional or PI control Easy setup DIP switch/jumper setup and tuning Selectable proportional band Selectable integral reset rate Direct or reverse acting Optional DIN rail mounting Compact size Position insensitive

APPLICATIONS Controlling duct pressures Isolation rooms VAV systems Inlet guide vanes and VFDs Paint booths Relief damper control Pressure bypass damper control

1.5(3.81)

4.8(12.19)

2.9(7.37)

4.0(10.16)

3.4(8.64)

0.7(1.78)

4.6(11.68)

2.0(5.08)

2.75(6.99)

Mounting Slotsfor Optional

DIN RailAdapter

Set Point Knob

High Pressure PortLow Pressure Port

Pressure Ports

in(cm)

DIMENSIONS

SPECIFICATIONS

PRESSURE PSI

KELE www.kele.com USA 901-937-4900 International 901-382-6084

PWM INPUTPWM INPUT

REM SPT INPUT

LOC SPT POT +

LOC SPT INPUT

LOC SPT POT

FEEDBK INPUT24 PWR

COMMONMA SIG

OUTPUT

LOCA

LSE

T PO

INT

FEED

BACK

REM

OTE

SE

T PO

INT

B

A1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

4-20 mA Sourcing Output Signal toControlled Device

+

PCM DIP SWITCH SETTINGS1=ON 0=OFF

PCM JUMPER POSITIONS

A1 0 1A2 1 0

Local Set Point Remote Set Point

A3 0 1Reverse Acting Direct Acting

Reset Per Minute Rate

Proportional Throttling Range Settings

OFF 0.5 1.0 2.0A4 0 0 1 1A5 0 1 0 1

This Unit'sRange Is:0-2''W.C.0-3''W.C.0-5''W.C.

10% 20% 35% 50% 65% 80% 90% 100%A6 0 0 0 0 1 1 1 1A7 0 0 1 1 0 0 1 1A8 0 1 0 1 0 1 0 1

All B switches should be in the off positionLocal Set Point Jumper Positions 1, 8, & 11For Remote Set Point: Voltage Input Jumper Positions 2, 8, & 11 Current Input Jumper Positions 1, 8, & 11

ON

ON

12

3456

78910

+ 24 VDC Power

1112

Remote Set Point Input 4-20 mA or 1-5VRemote Set Point

+

Common

Optional Remote Set Point Wiring4-20 mA or 1-5 VDC

1. Switch A1 off and switch A2 on.2. Set jumper positions to 1, 8, and 11.3. Set switch A3 in the on position for direct acting con-

trol and in the off position for reverse acting control.4. Set switches A4 and A5 in the off position.5. Set switches A6, A7, and A8 in the on position. This

will set the proportional band at 100%. 6. Set all B switches to the off position.

7. All systems will require a fine-tuning process. Startthe tuning process by decreasing the proportionalband in increments through switches A6 through A8until the system begins to hunt. Then, return to theDIP switch settings before the system started to hunt.

8. Switches A4 and A5 are used to select the integralreset rate. This feature corrects the offset that isinherent with proportional-only controllers. If it isdetermined that the integral reset is needed, increasethe rate until this offset is corrected and still maintainsstability.

PRESSURE CONTROLLERMODEL PCM

WIRING

ORDERING INFORMATION

SETUP FOR LOCAL SET POINT OPERATION (FACTORY SETTINGS)

MODEL DESCRIPTIONPCM Pressure Set Point Controller

PRESSURE RANGE020 0" to 2'' W.C.030 0" to 3'' W.C.050 0" to 5'' W.C.

OPTIONS47 DIN rail mounting (must be factory installed)

PCM 47020 Example: PCM-020-47 Pressure controller for a0" to 2'' W.C. range with DIN rail mounting