Penn System 450 Series User Manual

System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin
38
Table 6 provides descriptions, ratings, requirements, and recommended cable types and recommended wire sizes
for System 450 standard control, expansion, and power modules.
Table 6: System 450 Wiring Terminal and Wire Size Information (Part 1 of 2)
Terminal Block
Type
(on Module Type)
Terminal
Label
Terminal Function Required Wire
Sizes
Sensor and
Low-Voltage Supply
Power Terminal
Block
(on all Control
Modules)
24V Provides power terminal for active 24VAC humidity
sensors when a C450YNN power module is
connected.
0.08 mm
2
to 1.5 mm
2
28 AWG to 16 AWG
5V Provides 5 VDC power for active sensors.
Sn1, Sn2, Sn3 Accepts passive or active input signals from sensors.
C Provides low-voltage common connections for passive
or active sensors connected to the 5V, Sn1, Sn2, and
Sn3 terminals.
Note: The terminals are connected internally.
COM Provides low-voltage common connections for
24 VAC power connected to the 5V, Sn1, Sn2, and
Sn3 terminals.
Note: The terminals are connected internally.
Line-Voltage Output
Relay Terminal
Blocks
(on Control and
Expansion Modules
with Relay Output)
LNC1,
LNC2
Connects equipment control circuit to the line-voltage
Normally Closed (LNC) contact on the SPDT relay.
LNC2 terminals are only on control and expansion
modules with two output relays.
0.08 mm
2
to 2.5 mm
2
28 AWG to 14 AWG
LNO1,
LNO2
Connects equipment control circuit to the line-voltage
Normally Open (LNO) contact on the SPDT relay.
LNO2 terminals are only on control and expansion
modules with two output relays.
LC1
LC2
Connects line power to the line-voltage Common (LC)
on the SPDT relay.
LC2 terminals are only on control and expansion
modules with two output relays.
Figure 19: Wiring Terminal Details for System 450 Control and
Expansion Modules with Analog Outputs

Penn System 450 Series Specifications

General

Brand	Penn
Model	System 450 Series
Category	Control Unit
Language	English