General Monitors S4000CH, Руководство пользователя

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Model S4000CH
15
3.5.1 Terminal Block TB1 – Sensor Connections
TB1 contains the three sensor connections, white (W), black (B), and red (R). Remove the
display board by loosening the two captive screws on the board and lifting it straight up.
Connect the color-coded wires from the combustible sensor to the matching colored
terminals on TB1. The label on the inside of the cover can serve as a guide. Replace the
display board by pressing it into place, and tightening the two captive screws.
WARNING:
Do not c24 VDC to TB1. Damage to the electronics will result.
3.5.2 Terminal Block TB2 – Power and Signal Connections
TB2 contains the connections for Power, Relay Reset, Remote Calibration/ARGC,
Modbus and 0-20 mA Output Signal. The terminal connections are as follows:
TB2 position Function
1 0-20 mA Output
2 CH1 Modbus -
3 CH1 Modbus +
4 CH2 Modbus -
5 CH2 Modbus +
6 Remote Calibration/ARGC
7 Relay Reset
8 COM
9 +24 VDC Power
10 +24 VDC Power for ARGC
Table 1: TB2 Power and Signal Connections
It is recommended that a minimum three-wire shielded cable be used for making the
power and 0-20mA Output connection on the S4000CH. It is also recommended that
separate two-wire shielded twisted pair
cables be used for making the Modbus
connections. The spring type terminal block accepts 14 AWG to 20 AWG and the screw
type terminal block accepts 12 AWG to 18 AWG stranded or solid wire. Each wire should
be stripped before wiring the S4000CH. To connect wiring to the spring type terminal
block, insert a screwdriver into the orange tab and press down (Figure14), opening the
terminal. Insert the wire into the terminal and release the orange tab, clamping the wire in
the terminal. Check the hold of the wire by GENTLY tugging it to ensure it is locked in.
Figure 14: Spring Type Terminal Block Operation
Ground
+24 VDC