GE TMO2D, User Manual

Page: 21 / 102

TMO2D Digital Display User’s Manual 13
Chapter 2. Installation
2.3.4a Wiring:
Use the following steps to interconnect the XMTC to the TMO2D.
1. Route the cable into the XMTC transmitter through one of the 3/4" conduit holes on the side of the transmitter.
WARNING! Be sure to plug the unused conduit/cable entry hole on the transmitter, in order to meet
specifications and to maintain the appropriate weatherproof or explosion-proof rating.
2. Unplug TB1 on the XMTC transmitter PC board (PCB) by carefully pulling it directly up without bending the pins
attached to the PCB. See Figure 8 below.
3. Loosen the TB1 side screws and insert the colored wires into the corresponding openings on top of TB1. Refer to
Table 8 below for color-coded pin designations.
WARNING! Make sure that the +24 VDC wire (red) is connected to terminal TB1-1. Conn24 VDC to
any other terminal could cause bodily harm. It could also cause damage to the XMTC PCB,
requiring factory repair.
4. Tighten the side screws, and carefully plug TB1 back onto the XMTC PCB.
5. Connect the other end of the cable to the TMO2D. Refer to Figure 11 on page 17 for TB1 location.
Figure 8: Wiring Connections to TB1 Block
CAUTION! Do not make any connections to unassigned or unused terminals.
Table 8: Wiring the XMTC with 4-Wire Cable
Wire Connections Color XMTC Transmitter TB1 TMO2D Display TB5
Power +24 VDC Red Pin 1 +24 V
Power Return Black Pin 2 RTN
+mA Signal White Pin 3 GAS
–mA Signal Blue or Green Pin 4 RTN
2
3
4
1
+4 to 20 mA (white) 3
–4 to 20 mA (green) 4
RS232 TX (white) 2
RS232 GND (green) 3
TB1
2
3
+24 VDC Line (red) 1
–24 VDC Return (blk) 2
RS232 RX (red) 1
TB2
1
Signal Connections