Alpha Technologies CFR 1500, CFR 2000, CFR 2500, CFR 3000 - Manual (Page 57)

2. FEATURES
2.5 Communication / Interface Options, continued
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Modem (optional configuration with Intelligent Interface Device; available on
60 Hz models only)
When the CFR UPS is equipped with an Intelligent Interface Device (IID), an
internal modem can be installed to provide long-range communications. A standard
modular telephone cable is used to connect the CFR modem jack to the wall jack.
For further information, refer to the Intelligent Interface Device manual.
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)
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 1500 VAC isolation is recommended). A system shut down in this manner will
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 in the building must be switched OFF.
Consult your national and local electrical codes for further information.
Fig. 9
Pin out: (MMJ connector, offset key)
Pin 1
External IID Connector
The external IID connector provides an interface for the optional desktop
Intelligent Interface Device (IID). 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:
1: +12V DC (unreg) 4: RS-485 Negative
2: +12V DC (unreg) 5: GND
3: RS-485 Positive 6: GND
5. RS-232 TERMINAL COMMUNICATION
5.12 Event Descriptions, continued
Blackout (BLACKOUT) - The blackout alarm is triggered when the input voltage
is lost for 12 ms, or when the RMS input voltage is less than 1/2 the nominal voltage for
100 ms or longer. * *
Frequency High (FREQ_HI) - A frequency high alarm is triggered when there is a
power line problem where the input frequency increases beyond the preset limit. * *
Frequency Low (FREQ_LO) - A frequency low alarm is triggered when there is a
power line problem where the input frequency decreases beyond the preset limit. * *
Output Voltage Low (VOLT_LO) - The output voltage low alarm indicates that
the output of the UPS is too heavily loaded, or there is a fault within the UPS. Reduce
the load connected to the UPS.
Output Voltage High (VOLT_HI) - The output voltage high alarm can be caused
by some equipment which draws power at irregular intervals. Disconnect all equipment
from the UPS and determine whether the fault will repeat. If it does, the unit may be
out of calibration, or there is an internal fault causing the overvoltage condition. Have
the unit serviced by an authorized Alpha Repair Depot.
Output Power Overload (PWR_OVLD) - The output power overload alarm
indicates a condition where the output of the UPS is too heavily loaded. If this is not
corrected, the unit may go into a shutdown condition to protect the UPS's internal
circuitry.
Output VA Overload (VA_OVLD) - The output VA overload alarm is triggered
when the RMS current exceeds the rating of the UPS. Reduce the load on the output
of the UPS to prevent overheating.
Output Over Voltage Fault (OVER_V_FLT) - The output overvoltage fault alarm
indicates a malfunction has been detected in the control circuit. The output voltage has
been shut off to protect the load from an overvoltage condition.
Output Short Circuit (SHORT_CCT) - The output short circuit alarm indicates a
load was connected to the UPS that was shorted. This could be caused by a miswired
AC power cord or equipment connected to the UPS that is in need of repair.
NOTE: This condition activates the SERVICE alarm, along with an audible
alarm which can be cleared by pressing the MUTE key.
Internal Temperature High (AMB_TEMP_HI) - The internal temperature high
alarm indicates that the temperature of the UPS, measured by internal circuitry, was
found to be too high. This could be caused by a sustained overload on the output of
the UPS, a blocked fan (if equipped), or operating the unit in an excessively high
ambient temperature. To prolong the life of the batteries and UPS components,
determine and correct the cause of the over-temperature condition.
* * Indicates events that cause the UPS to operate in “LINE FAILURE” mode.
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