Johnson Controls PENN System 450 Series Installation Instructions Manual page 4

Figure 2: C450CEN-x Control Module with Ethernet Communications
Table 1: System 450 Control Module with Ethernet Communications Wiring Information
Terminal Label
Block
Low- 24V
Voltage
and Input
Sensors
Terminal
Block
COM
S1, S2, S3
C, C
5V
Ethernet
Port
1. For sensor wire runs greater than 50 ft or where the sensor wiring is exposed to electromagnetic or radio frequency
interference, use shielded cable and connect the shield to a C (common) terminal on the control module.
4 System 450™ Series Control Module with Ethernet Communications Installation Instructions
Common terminals (C)
are internally
connected.
Low-Voltage
Input Sensors and
Supply Power Terminals
Showing Wiring Terminals
Function, Electrical Ratings, and Requirements
Provides internal 24 VAC power at terminals for (humidity)
sensors when a C450YNN power module is connected in the
control system module assembly.
or
Accepts external 24 VAC (20–30 VAC) supply power for the
control system when a C450YNN power module is not
connected in the control system module assembly.
Provides the common connection for 24 VAC power terminal for
either internally or externally supplied 24 VAC power (only).
Accepts passive or active (0–5 VDC) input signals from control
1
sensors .
Provide low-voltage common connections for the sensors
connected to the 5V, Sn1, Sn2, or Sn3 terminals (only).
Note: The two C terminals are use for sensor common
connections only. The two C terminals are connected internally.
Provides 5 VDC power for active sensors.
Provides 8-Pin RJ45 modular jack for connecting to an Ethernet
network.
System 450 Control Module
with Ethernet Communications
(C450CEN-1)
RJ45
Ethernet
Port
6-Pin
System 450
Bus Connector
Recommended Cable
Type and Wire Sizes
2 2
0.08 mm to 1.5 mm
28 AWG to 16 AWG
2 2
0.08 mm to 1.5 mm
28 AWG to 16 AWG
CAT 5 Straight-Through or
Crossover Cable