Wiring System 450 Sensors And Transducers - Johnson Controls Penn System 450 Series Technical Bulletin

Table 6: System 450 Wiring Terminal and Wire Size Information (Part 2 of 2)
Terminal Block
Type
(on Module Type)
Line-Voltage
Output Relay
Terminal Blocks
(on Control and
Expansion Modules
with Relay Output)
Low-Voltage
Analog Output
Terminal Block
(on Control and
Expansion Modules
with Analog
Outputs)
Line-Voltage
Supply Power
Terminal Block (on
Power Modules
only)

Wiring System 450 Sensors and Transducers

Refer to the sensor installation instructions referenced in Related Documentation
on page 5 for information on wiring System 450 compatible sensors.
40 System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin
Terminal Terminal Function
Label
LNC1,
Connects equipment control circuit to the line-
voltage Normally Closed (LNC) contact on the SPDT
LNC2
relay.
LNC2 terminals are only on control and expansion
modules with two output relays.
LNO1, Connects equipment control circuit to the line-
voltage Normally Open (LNO) contact on the SPDT
LNO2
relay.
LNO2 terminals are only on control and expansion
modules with two output relays.
LC1 Connects line power to the line-voltage Common
(LC) on the SPDT relay.
LC2
LC2 terminals are only on control and expansion
modules with two output relays.
AO1
In conjunction with the COM terminal, provides a
self-detecting analog output signal; either
AO2
0 to 10 VDC or 4 to 20 mA.
COM In conjunction with the AO1 or AO2 terminal,
provides a self-detecting analog output signal; either
0 to 10 VDC or 4 to 20 mA.
240 VAC Left terminal is for one 240 VAC supply power lead.
No Label Middle terminal is the Common connection for either
on the the 120 VAC or 240 VAC supply power lead.
Middle
Terminal
120 VAC Right terminal is for one 120 VAC supply power lead.
Required Wire
Sizes
28 AWG to 14 AWG
2 2
0.08 mm to 2.5 mm
28 AWG to 16 AWG
2 2
0.08 mm to 1.5 mm
22 AWG to 14 AWG
2 2
0.34 mm to 2.5 mm