Alpha Technologies CFR 600, CFR 600XT, CFR 1000 - Manual (Page 20)

External I 2 D Connector
The external I 2 D connector provides an interface for the optional
desktop Intelligent Interface Device (I 2 D). This allows the CFR to be
remotely monitored and controlled from up to 2,000 feet away. The port
uses a proprietary RS-485 protocol and has the following pin out:
Pin out: (MMJ connector, offset key)
1: +12V DC (unreg) 4: RS-485 Negative
2: +12V DC (unreg) 5: GND
3: RS-485 Positive 6: GND
2.5 Communication / Interface Options
14
2. FEATURES
External Alarms Connector
The external alarms connector provides two contact closures to
indicate LINE FAIL and LOW BATTERY alarms.
EPO (Emergency Power OFF) Switch (Factory Installed Option on
the CFR 1000 Only)
Pins 7 and 8 of the ALARM INTERFACE connector provide
EMERGENCY POWER OFF contacts. A switch contact can be hard-wired
to the UPS to completely shut down the system in the event of an
emergency, such as a fire.
In an emergency, the switch must be depressed (shorted) for at least
1.5 seconds. The UPS will shut down approximately 2 seconds after the
signal is recognized. The switch, connected to pins 7 and 8, must be
electrically isolated (up to 1500VAC isolation is recommended).
A system shut down in this manner will open the BATTERY circuit
breaker. In the event there is an actual fire in the equipment room, the wire
will melt causing as short circuit between pins 7 and 8 and open the
BATTERY circuit breaker.
CAUTION: When the EPO switch is activated, the AC LINE connected to
the UPS input may still be energized. To completely remove the power from
the building, the MAIN AC LINE breaker must be switched OFF. Consult
your national and local electrical codes for further information.
Pin 1