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Basic Connection and Start-Up
3
EPO Port Connection
This optional feature is only for those applications that require
connection to a facility's Emergency Power Off (EPO) circuit.
When the UPS is connected to this circuit, it enables
emergency shutdown of the UPS's inverter and inhibits transfer
to internal bypass. Using the cable provided, connect the EPO
port of your UPS (see
3a
normally open switch according to the circuit diagram (see
Note:
1. If using a cable other than what is supplied, the cable should not exceed
350 feet or have a resistance of greater than 10 ohms.
2. If a non-latching EPO switch is used, the EPO must be held for a minimum of
1 second. This does not apply to a latching EPO switch.
CAUTION: The EPO port is not a phone line surge
suppressor; do not connect a phone line to this port.
UPS Unit State when asserting EPO with AC line present:
LEDs
Output
Fans
OFF
OFF
ON
To restart the UPS unit after asserting EPO with AC line present:
Option 1:
1. Verify that the EPO assertion has been removed or cleared.
2. Press ON button until unit beeps, then release.
3. UPS output will turn back on after it completes diagnostics.
Option 2:
1. Verify that the EPO assertion has been removed or cleared.
2. Remove AC line power to the UPS unit, wait until the LCD is
completely off.
3. Reapply AC line power. Now the UPS will start back up in normal operation mode.
UPS Unit State when asserting EPO without AC line power:
LEDs
Output
Fans
OFF
OFF
OFF
To restart the UPS unit after asserting EPO without AC line present:
1. Verify that the EPO assertion has been removed or cleared.
2. Reapply AC line power to the UPS unit. Now the UPS will start back up in normal operation mode.
4
External Battery Connection
Check the Unit Specific Accessories section under Overview for
compatible battery packs and maximum quantities for your UPS
system. Ensure that your battery pack matches the voltage
listed on your UPS battery connector. Adding external batteries
will increase recharge time as well as runtime. See the battery
pack owner's manual for complete installation and setup
instructions. Make sure cables are fully inserted into their
connectors. Small sparks may result during battery connection;
this is normal. Do not connect or disconnect battery packs when
the UPS is running on battery power.
IMPORTANT! To calibrate your UPS so that the runtime-
remaining LCD and software information screens
accurately predict runtime with external battery packs
connected, see page 23 for more information if connecting
external batteries to this UPS.
CAUTION: Do not open or mutilate batteries. Released material is harmful to the skin and eyes. It may be toxic. The following
precautions should be observed when working on batteries: Determine if the battery is inadvertently grounded. If inadvertently
grounded, remove the source from ground connection. Contact with any part of a grounded battery can result in electrical shock. The
likelihood of such a shock can be reduced if grounds are removed during installation and maintenance. (This is applicable to
equipment and remote battery supplies that do not have a grounded supply circuit.)
) to a user-supplied normally closed or
Serial
SNMP
USB
LCD Screen
"EMERGENCY
ON
ON
ON
POWER OFF"
Serial
SNMP
USB
LCD Screen
OFF
OFF
OFF
"EMERGENCY POWER OFF"
).
3b
Your model may differ.
3a
3b
4
Your model may differ.
12
4-5
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