Specifications

8
2.4 Remote Sensor Connection
Each remote sensor is connected by a four-wire connection – two wires for DC power and two wires for the 4 – 20mA loop connection. The sensors are connected to the control panel PCB
with modular connectors, two sensors per connector. See Error! Reference source not found. for a view of a typical sensor connector. Refer to Table 2-2 for wire size recommendations.
Figure 2-1 Sensor Interface Connector
Wire gauge Maximum Run Length (ft.)
(feet) (meters)
18 500 152
16 800 244
14 1250 381
Table 2-2 Recommended Wire Gauge
Each 8-terminal sensor modular connector may be disconnected from the PCB connector to ease wire installation. The terminals will accept wire from 16 to 28 AWG. To install a wire, strip
back approximately 0.25 in. (6 mm) of insulation, and insert the bare wire into the terminal. Tighten the screw clamp and ensure that the wire cannot be easily pulled from the connector.
Table 2-3 lists the connector to sensor channel correspondence and Table 2-4 lists channel signals, connector and terminal assignments for all 12 input channels.
Control Board Connector Sensor Channels
C1 C2 1, 2
C3 C4 3, 4
C5 C6 5, 6
C7 C8 7, 8
C9 C10 9, 10
C11 C12 11, 12
Table 2-3 Connector to Sensor Channel Mapping
CH 1 +24VDC C1 C2 5 CH 5 +24VDC C5 C6 5 CH 9 +24VDC C9 C10 5
CH 1 +I LOOP C1 C2 6 CH 5 + I LOOP C5 C6 6 CH 9 +I LOOP C9 C10 6
CH 1 -I LOOP C1 C2 7 CH 5 - I LOOP C5 C6 7 CH 9 - I LOOP C9 C10 7
CH 1 24VDC RET C1 C2 8 CH 5 24VDC RET C5 C6 8 CH 9 24VDC RET C9 C10 8
CH 2 +24VDC C1 C2 1 CH 6 +24VDC C5 C6 1 CH 10 +24VDC C9 C10 1
CH 2 +I LOOP C1 C2 2 CH 6 + I LOOP C5 C6 2 CH 10 +I LOOP C9 C10 2
CH 2 -I LOOP C1 C2 3 CH 6 - I LOOP C5 C6 3 CH 10 - I LOOP C9 C10 3
CH 2 24VDC RET C1 C2 4 CH 6 24VDC RET C5 C6 4 CH 10 24VDC RET C9 C10 4
CH 3 +24VDC C3 C4 5 CH 7 +24VDC C7 C8 5 CH 11 +24VDC C11 C12 5
CH 3 +I LOOP C3 C4 6 CH 7 + I LOOP C7 C8 6 CH 11 +I LOOP C11 C12 6
CH 3 -I LOOP C3 C4 7 CH 7 - I LOOP C7 C8 7 CH 11 - I LOOP C11 C12 7
CH 3 24VDC RET C3 C4 8 CH 7 24VDC RET C7 C8 8 CH 11 24VDC RET C11 C12 8
CH 4 +24VDC C3 C4 1 CH 8 +24VDC C7 C8 1 CH 12 +24VDC C11 C12 1
CH 4 +I LOOP C3 C4 2 CH 8 + I LOOP C7 C8 2 CH 12 +I LOOP C11 C12 2
CH 4 -I LOOP C3 C4 3 CH 8 - I LOOP C7 C8 3 CH 12 - I LOOP C11 C12 3
CH 4 24VDC RET C3 C4 4 CH 8 24VDC RET C7 C8 4 CH 12 24VDC RET C11 C12 4
Table 0-3 Connector to Sensor Channel Mapping
Connector Pin Number Connector
Signal Name Signal Name Pin Number Pin Number Connector
Signal Name
Table 2-4 Sensor Connectors: Channel and Pin Assignments