17
PPC4000 MOUNTING AND WIRING
As a convenience, the PPC4000 is equipped with de-pluggable type terminal blocks. It is recom-
mended the PPC4000 be wired with the terminal blocks inserted into the control as shipped.
Following the wiring connections table above, make all electrical connections in accordance with the
application requirements. The suggested order of wiring is as follows:
1. Power inputs, L1, L2, Earth (AWG 18, 300 vac) P3.1, P3.2
2. NXD410 user interface using Fireye cable 59-562-2 P12.7-P12.10; P2.1, P2.4
3. Servo motors P2.2, P2.3, P2.5, P2.6, P12.5, P12.6, P12.11, P12.12
4. Alarm relay contacts if required (AWG 16-18, 300 vac)
5. Digital inputs (AWG 14-16, 300 vac) P13.1 - P13.10
6. Operating control to limit switches and flame safeguard P4.3, P4.4
7. Flame safeguard inputs to PPC4000 (AWG 18, 300 vac) P15.2, P15.3, P15.4
8. Relay outputs to flame safeguard (AWG 14-16, 300 vac) P5.1, P5.2, P5.9, P5.10
9. Profile select inputs (AWG 18, 300 vac) P15.5-P15.8
10.Pressure / Temperature sensors (shielded cable, Belden 9318)
PRESSURE AND TEMPERATURE SENSORS
1. Insure that the range of the selected pressure or temperature sensor is appropriate for the applica-
tion. See Table 2.
Note: A general rule to follow when selecting the sensor range is that the expected value of the
monitored pressure or sensor should fall between 35-75% of the upper range of the sensor. For
example, a steam boiler maintains 15 lbs. pressure, select the BLPS-30 Pressure Sensor, with a 0-
30 PSI range
2. The sensors must be located where the ambient temperature will not exceed the maximum ambi-
ent operating temperature specified for the sensor. Insure that the pressure range programmed on
the PPC4000 Control matches the installed pressure sensor.
3. Vacuum return systems will occassionally pull a positive pressure sensor into a vacuum condition
which will cause a “sensor out of range” fault, requiring a manual reset. The BLPS-25’s range is -
14.7 to 25 PSI and will operate normally should the system go to vacuum. Please note however,
the available set point range is 1.0 PSI to 23.0 PSI in 0.1 PSI increments.
4. Do not mount any of the sensors where they could be used as a footstep.
Installation must be performed by a trained, experienced flame safeguard technician.
CAUTION: Ensure that electric power is turned off. Refer to SN-100 for
recommended grounding techniques.
Be aware that power to some interlocks (operating controls, air flow
switches, modulating circuits, etc.) may be derived from sources other
than what is controlling the PPC4000.
