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Fig. 23 — Field Wiring for Stand-Alone Static Pressure Control with
4-Wire Static Pressure Transducer (Voltage Output)
Fig. 24 — Field Wiring for High Inertia/Low Horsepower Applications Using VFD as a Starter
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Ground – DC Common
Digital Input Common
N.C. Fire / Smoke Det. Contact
N.O. Start / Stop Contact
N.C. Low Limit Thermostat
N.C. High Pressure Switch
24 Vdc
DI-1 Start / Stop
DI-2 Run Enable
DI-4 Start Enable 1
DI-5 Start Enable 2
Field Supplied
Input Connections
* 0-10 v dc
Output Signal
AI-2 Static Pressure Signal (+) 0 - 10 v dc
AI-2 Static Pressure Signal (-) 0 - 10 v dc
AI-2 Cable Shield Ground
+
-
From a Field Supplied 4 Wire
Static Pressure Transducer
DI-6 Internal PID Enable
Jumper
* Acceptable transducer output voltage ranges are 0-10 vdc, 0-5 vdc, and 2-10 vdc. Default sensor range is 0-10 vdc from factory. Use param-
eters 4008 to configure sensor low voltage and parameter 4009 to configure sensor high voltage.
NOTES:
1. All conductors are no. 22 AWG (American Wire Gage) minimum.
2. Install jumpers if fire/smoke detector, low limit thermostat, or high pressure switch are not required.
3. Program static pressure control set point using parameter 4011 in volts vdc.
NOTES:
1. All conductors are no. 22 AWG (American Wire Gage) minimum.
2. Install jumpers if fire/smoke detector, low limit thermostat, or high pressure switch are not required.
3. Program desired speed set point in Hz using parameter 1202.