ABB RMC-100 - Wire I;O Ports; Figure 4-2: COMM Terminals and Modules

12 | RMC-100 | 2105551MNAD
PIN
RS-232
RS-422
RS-485
4
Operate (OPER)
Operate (OPER)
Operate (OPER)
5
Remote request to send (RRTS)
Remote request to send (RRTS)
Remote request to send (RRTS)
6
Request to send (RTS)
Transmit bus+ (TBUS+)
Transmit/Receive (BUS+)
7
Transmit data (TX)
Transmit bus- (TBUS-)
Transmit/Receive (BUS-)
8
Receive data (RX)
Receive bus+ (RBUS+)
Not Used
9
Clear to send (CTS)
Receive bus- (RBUS-)
Not Used
Refer to the RMC user drawings for COMM wiring details for specific external devices. See the Additional
information section.
To wire the serial communication port:
NOTICE
– Equipment damage. An external device can be powered from pin 1 (VOUT) or pin 3
(Sw VOUT) on both COMM1 and COMM2. The output voltage at these pins is dependent upon the
external power supply connected to the CHARGER/EXT PWR port.
Bef
ore connecting to these pins, ensure that the device is compatible with the input voltage at the
CHARGER/EXT PWR port. Connecting an incompatible device may result in damage to the device.
1. Use a slotted screwdriver to pry the terminal connector off the electronic board.
2. Trim the wire covering back ¼ inch on each wire.
3. Loosen the terminal connector screws for the correct pin according to Table 4-2
.
4. Insert the wires in the required pins. If powering the device from the COMM port:
a. Use pin 1 (VOUT) and pin 2 (GND) to provide constant voltage.
b. Use pin 3 (Sw VOUT) and pin 2 (GND) to provide switched voltage.
5. Tighten the terminal connector screws.
NOTICE
– Equipment damage. Do not overtighten the terminal connector screws as this may
damage the wire.
6. Insert the terminal connector back onto the COMM port if it was removed.
7. Insert the communication module in the appropriate slot (Figure 4-2
). The communication module
pushes the port cover downward when inserted.
Figure 4-2: COMM terminals and modules
4.4 Wire I/O ports
Wire the RMC I/O ports to monitor, control and power external devices. Wiring for power is required if
there is no external supply powering the device. Refer to the RMC user drawings for I/O wiring details for
specific external devices. See the Additional information
section.
To wire the I/O port:
NOTICE
– Equipment damage.
An external device can be powered from pin 1 (PWR) on any of
the AIs (
Table 4-3) or the AO (Table 4-4). The output voltage at the PWR pin is dependent upon
the external power suppl
y connected to the CHARGER/EXT PWR port.