APC 10-30 KVA Installation Manual download pdf (Page 27)

20 kVA - 80 kVA UPS

User’s and Installation Manual

1015543

Revision D

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 X4 (see figure 11).

The pins of connector X4 have been connected together. When this connection is open, the logic

circuitry will immediately shut down the UPS, thus preventing the power from supplying the

load. In order to have the UPS running again the pins of connector X4 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.

Programmable Inputs

The UPS communication device includes four programmable inputs (X219, X220, X221,

X222) for building alarms. These inputs can be for example informing when UPS gets power

from generator, shutting down and starting up inverter remotely or turning to bypass mode

remotely. These inputs can be activated by connecting the two pins together of the

particular terminal.

These programmable inputs have the following default values:

Generator On Input X219

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 (see figure 11). In

normal operations the pins of X219 are not be connected together. When the connection

between these pins are connected together by floating contacts of the generator control device,

the logic circuitry in the UPS will prevent the transfer to unstable power source. When the unit

is delivered the connection on terminal X219 will be open.

Remote Output On/Off Input X220

The remote output on/off input is used to turn off the output of the UPS from a distance.

Remote output on/off wires are connected on terminal X220 (see figure 11).

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 be turned off and also the static bypass line will be turned off. In order to turn on the

inverter and the static bypass line the connection between these pins have to be opened.

External Bypass Switch Input X221

If the UPS system is equipped with an external bypass switch, its status can be monitored

by the UPS via terminal X221. The external bypass switch auxiliary contact wires are

connected on terminal X221 (see figure 11).

If an external bypass switch will be used, contact your dealer first.

Environment Alarm Input X222

The environment alarm input is used for connecting the UPS to your building alarms, such as

overtemperature or smoke detector alarms.

The environment alarm input contact wires are connected on terminal X222 (see figure 11).

When this alarm is activated it will be indicated to the user through RS232 ports.

NOTE!

The programmable auxiliary inputs (Generator ON, External Bypass Switch, Remote Output On/Off,

Environment Alarm) 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.

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APC 10-30 KVA Installation Manual Page 27

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