Powerware UPS20-30kVA User Manual
2
UPS 20-30 kVA, 230 V 0/60 Hz output
User’s Guide
1026743
Revision B
Revision B
In order to have the UPS running again pins 1 and 2 of connector X2 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 “Start-up after EPO”.
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 “Start-up after EPO”.
If the use of normally open EPO operation is desired, the loop on X2 has to be retained and the
normally open EPO switch connected to X12. Operation is as above.
normally open EPO switch connected to X12. Operation is as above.
Relay outputs
The UPS incorporates a programmable relay output with potential free contacts at X7 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.
For more information, see the section “Using relay outputs”.
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.
For more information, see the section “Using relay outputs”.
Warning!
The relay contacts must not be directly connected to mains related circuits.
Reinforced insulation to the mains is required.
Programmable signal inputs
The UPS incorporates two programmable inputs (X44, X4). 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.
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
a) Disable Bypass Operation
If active the automatic transfer to the static bypass is prevented.
b) Charger off
If active the batteries charging is disabled. In case of mains power outage the discharge of
batteries is supported.
batteries is supported.
c) 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.
communications and rectifier/battery charger shall remain functional. Restart initiated
immediately when inactive.
d) Request Bypass
If active the UPS transfers to bypass if bypass voltage, frequency and synchronisation are
ok.
ok.