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KEOR T
Installation Manual
6.4. Dry Contacts
Maximum voltage to be applied to the relay contacts is 42VAC rms (sinus) or
60VDC. Maximum contact current depends on the applied voltage and the load
characteristic. Both maximum voltage and maximum contact current correspond-
ing to the applied voltage shall not be exceeded.
Applied voltage Maximum contact current for resistive load
Up to 42 VAC 16 A
Up to 20 VDC 16 A
30 VDC 6 A
40 VDC 2 A
50 VDC 1 A
60 VDC 0.8 A
Table.11
There are 4 dry contact sockets on the Interface Board. The relays can be programmable from Relay Func-
tions menu (under Settings menu). “General alarm, Input failure, Battery failure, Output failure, Bypass
active, Output overload, High temperature” alarms can be assigned to the contacts. Each alarm can be
assigned to separate relays but also one alarm may be assigned to all relays.
Each output socket 3-pin and middle pin is xed, the upper pin is normally closed and lower pin is nor-
mally open.
You may see the relay numbers as above.
Free contact relay connection cables shall have a cross-section of 1.5 mm
2
.
Maximum allowed resistive contact currents for several voltages are given on the table below:
Relay functions are described below:
Relay functions can be changed through front panel.
Each relay has both a normally open (NO) and a normally closed (NC) contact. One end of these contacts
is common.
Relay Default Function
Relay 1 General Alarm
Relay 2 Input failure
Relay 3 Battery failure
Relay 4 Output failure
Table.12
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