User Guide
6 System 350 P352P Electronic Proportional Plus Integral Static Pressure Controls
I
nstallation and Wiring
The P352P is housed in a compact NEMA 1 plastic
enclosure designed for standard 35 mm DIN rail
mounting. The P352P is not position sensitive but
should be mounted for convenient wiring and adjustment.
Four key-slot mounting holes on the back of the control
case are provided should surface mounting be required.
Note: When mounting the P352P (or any
System 350 Module) to rigid conduit, attach the
hub to the conduit before securing the hub to the
control enclosure.
!
WARNING: Shock hazard. Disconnect
power supply before wiring
connections are made to avoid
possible electrical shock or
damage to equipment.
All wiring must be installed to conform to the
National Electrical Code and local regulations. For
maximum electrical rating of control, see label
inside the control cover. Use copper conductors only.
The P352P can output a variable signal from
0 to10 VDC or 0 to 20 mA. (Both outputs can be
used simultaneously.) Connections are made to the
terminal block located in the wiring compartment at
the bottom of the case.
Connection can be made to both the voltage and
milliampere outputs, allowing the P352P to drive
two outputs simultaneously (off the same RA or DA
ramp). This feature can be used to drive different
types of motor actuators or variable speed drives.
Table 1: Terminal Designations
Terminal
Designation
Terminal
Description
V
0 to 10 VDC output
I
0 to 20 mA output
SN
0-5 VDC input from the pressure
transmitter (in. W.C.)
VDC
14 VDC power supply for
the pressure transmitter
C
Power supply common for the
pressure transmitter
24V
24 volts AC or DC
Transmitter Connection
The P352P pressure control is used with a
DPT-2640 Differential Pressure Transmitter, which is
powered by the 14 VDC power supply of the P352P. The
transmitter is connected to the P352P at the
6-conductor terminal block located at the bottom of the
lower circuit board.
Shielded cable is not generally required for transmitter
wiring on runs of less than 50 feet. When using shielded
cable, isolate and tape the shield at the transmitter.
Connect the shield to the
āCā terminal on the P352P.
The maximum recommended length of
14 to 22 AWG shielded transmitter cable is
1,000 feet (305 meters).
Table 2: Transmitter Connections
Terminal Designations
P352P DPT-2460-3
DPT-2640-7
SN OUT
VDC EXC
C COM