P-164000341 8-10 kVA, 50/60 Hz (1-phase input) &
8-15 kVA, 50/60 Hz (3-phase input)
43
Revision 1 User's Guide
In order to have the UPS running again pins 1 and 2 of connector X52 have to be reconnected and
the UPS started manually. The pins must be shorted in order to keep the UPS running. Maximum
resistance is 10 ohm. The EPO shall not be galvanically connected to any mains connected circuits.
Reinforced insulation to the mains is required. See also Chapter 8.5 Start-up after EPO on page
56.
If the use of normally open EPO operation is desired, the loop on X52 has to be retained and the
normally open EPO switch connected to X12. Operation is as above.
7.3.2 Relay outputs
The UPS incorporates a programmable relay output with potential free contacts at X57 for remote
alarm indications. It is rated for max. 30 VAC 1 A or 60 VDC 0,2 A nominal values. Additional (4)
relay outputs can be obtained with the XSlot compatible AS/400 Relay Module (optional). For more
information see Chapter 8.2.4 Using relay outputs on page 54.
WARNING
The relay contacts must not be directly connected to mains related circuits. Reinforced
insulation to the mains is required.
7.3.3 Programmable signal inputs
The UPS incorporates two programmable inputs (X44, X45). Use of a non-polar (relay) control input is
recommended. The pins must be shorted with maximum resistance of 10 ohm in order to activate the
specific input.
NOTE
Please note the polarity of the inputs as indicated in the external control connections if used
with a polarity control.
The default and programmable settings for the signal inputs are:
• Disable Bypass Operation (If active the automatic transfer to the static bypass is prevented.)
• Charger off (If active the batteries charging is disabled. In case of mains power outage the
discharge of batteries is supported.)
• Remote ON/OFF (If active the UPS output turns off regardless of mode of operation. Auxiliary
power, fan, communications and rectifier/battery charger shall remain functional. Restart initiated
immediately when inactive.)
• Request Bypass (If active the UPS transfers to bypass if bypass voltage, frequency, and
synchronisation are ok.)
• Request Normal (If active the UPS transfers to inverter operation if not prohibited by EPO or alarm
condition.)
• Force Bypass (If active the UPS is forced to static bypass operation regardless of the bypass
status.)
• External Battery Breaker Status (If active the UPS knows that the batteries are disconnected.)
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