ARKEL Elektrik Elektronik Ltd. Şti. www.arkel.com.tr
ARKEL 56 KM-20
15. EMERGENCY OPERATION
In case of mains failure, KM-20 can get the power from batteries or 24VDC external supply. The
emergency supply type can be selected via a jumper on board. Below the jumper setting is shown.
Note: This setting is only needed when 24Vdc voltage is supplied to terminal AKU+ and AKU- for
emergency operation. If door controller will be supplied continuously from 20VAc power input
(with an UPS or an Emergency Evacuation Unit) there is no need to make this adjustment.
Emergency
supply selection
(with 1 jumper)
If battery connection is made to terminals AKU+ and
AKU- for emergency operation then this setting must
be configured. The battery voltage must be 24Vdc (2
pieces 12V/1.2Ah). KM-20 controls battery charge.
After an emergency opening with battery supply, KM-
20 cuts the battery supply and goes into sleep mode to
protect the batteries from over-discharge. After ac
voltage is applied to power supply input then
controller will switch back normal operation.
If external 24Vdc supply is applied to terminals
AKU+ and AKU- (from lift controller) instead of
battery connection for emergency operation, then this
setting must be configured. Door controller will be
continuously supplied by this voltage and never goes
into sleep mode. When 24Vdc voltage is applied door
controller operates in normal mode.
15.1. EMERGENCY DOOR OPENING WITH 'KAT' INPUT
During emergency operation (in case of mains failure) “OPEN” and “CLOSE” inputs are
functional. Door opening and closing signals can be applied to these terminals. In addition, during
emergency operation, “KAT” input (a separate door opening zone signal) is also becoming
functional. When this input is activated door opens. This feature can be used to keep door closed
when the elevator car is not just at the floor level.
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