Powerware 9305 - Emergency Power off Input

7.5 kVA - 15 kVA UPS
Parallel for redundancy System
User’s and Installation Manual
1012833
Revision 4
20
NOTE!
The relay contacts are rated for maximum 1 A/30 Vac or 0,2 A/60 Vdc. All relay
outputs are galvanically isolated from the other circuits of the UPS (UPS standards IEC
950, EN 50091-1). The relay contacts must not be galvanically connected to any mains
connected circuits. Reinforced insulation to the mains is required for equipments and
cables connected to these connections.
Emergency Power Off Input
This input is used to shut down the UPS from a distance. This feature can be used for
emergency power down, or for shutting down the load and the UPS by thermal relay for
instance in the event of room overtemperature. Remote shut down wires are connected on
connector X2 (see figure 5b).
The pins of connector X2 have been connected together. When this connection is open,
the logic circuitry will completely shut down the UPS, thus preventing the power from
supplying the load. In order to have the UPS running again the pins of connector X2 have
to be connected and the UPS manually started. The pins must be shorted in order to keep
the UPS running. Maximum resistance is 10 ohm. The EPO must not be galvanically
connected to any mains connected circuits. Reinforced insulation to the mains is required
for equipments and cables connected to these connections.
If the EPO input is used in both UPS units of the parallel for redundancy system the EPO
terminals must not be connected in series. The EPO circuit in both units must be
galvanically different circuit.
Generator On Input
The generator on input is used for inhibiting the transfer to static bypass line when the
UPS is supplied by an unstable ac source.
The generator auxiliary contact wires are connected on terminal X219 behind Relay
Interface connector X102 (see figure 5b). In normal operation the pins of X219 are not to
be connected together. When the connection between these pins are connected together
by floating contacts of the generator control device, the logic circuitry on the UPS will
prevent the transfer to unstable power source. When the unit is delivered the connection
on terminal X219 will be open.
If this input is used the information has to be connected to both UPS units.
External Bypass Switch Input
In parallel for redundancy units this signal input has to be connected to the auxiliary
contact information of the mechanical bypass switch in the parallel module.
The external bypass switch auxiliary contact wires are connected on terminal X221 behind
Relay Interface connector X102 (see figure 5b).
Remote Output On/Off Input
The remote output on/off input is used to shut down the inverter from a distance. Remote
output on/off wires are connected on connector X220 behind Relay Interface connector
X102 (see figure 5b).
The pins of connector X220 are not to be connected together in normal operation. When
the connection between these pins are connected together by floating contact the inverter
will turn off. In order to turn on the inverter the connection between these pins have to be
opened.