3
2.2 Configuration Port
This connector is only to be used for unit configuration (via RS485
or RS232) and updating the firmware (via RS232 only).
2.3 Enable Link
Allows a normally-closed volt-free contact to set or reset the
‘Forced- Off’ feature in the G-50. While the ‘Forced-Off’ feature is
enabled, all air-conditioning units are switched off and all remote-
controllers are disabled.
Upon detection of the open contact, the Procon unit sends the
‘Forced-Off’ Set command to the G-50, and resends at 5 seconds
intervals while the contact is open.
As soon as the contact closes, the Procon unit sends the ‘Forced-
Off’ Reset command to the G-50 once only. This ensures that any
subsequent ‘Forced-Off’ commands sent via the BACnet BMS
system are not overridden.
Configuration
Port
Pin 5
Pin 3
Pin 2
To PC
Comm Port
9 PIN D-SUB FEMALE
Fig.3 RS232 Comms Lead Wiring Diagram
Note: The Procon BAC-IP/50 comes supplied with a wire link
across the Enable Link terminals.
