
How the SW 100 works
1003680-US-0.1 Issue 2006-12-14 11
5.4.5 Power failure mode
• In case of power failure, normal operation can be carried out with impulses from
the “Key switch”
• Two contacts are available for connection of 2 x 12 V batteries (NiMH)
• DIP-switch for monitoring of batteries is also available
• During “Power failure mode” the operator will finish the actual operating cycle
and then switch off the battery supply. The battery powered operator can be
awaken to achieve a new operating cycle by an impulse on the KEY input. The
operating mode during battery power can be changed from “Power save” to “Con-
venience” (see page 42). During “Convenience mode” the operator will work as
normal until the batteries are discharged. The batteries are rechargeable and will
be charged by the control unit in the operator. New, fully charged, batteries can
typically open and close a door 300 times.
5.5 Functions on the extension unit EXU-SA (see also page 35)
5.5.1 Presence impulse, door mounted
The presence impulse is active during fully open and closing. The sensor is mounted
to the approach side of the door. Once the door is closed, the sensor is ignored and
will not be active until the next impulse is received.
Note! When installed as a pair of doors, the presence impulse signal will re-open
both doors. The sensor is not active in program mode OFF, manually opened
door or during battery operation (Power Failure Mode).
5.5.2 Presence detection, door mounted
When a sensor that is mounted on the swing side of a door detects an object, it will
send a command to the control unit to stop the door. If the control unit has received a
short signal from the sensor and there is still hold open time left on the control unit,
the door will continue on its way open if the object has cleared. The blanking poten-
tiometer can be adjusted so that the sensor will avoid detecting a wall or object near
the full open position. Presence detection has a higher priority than presence impulse.
Note! When installed as a pair of doors the presence detection signal will stop both
doors, except for double egress doors. The behaviour for double egress doors
can be changed (see page 42). The sensor is not active in program mode OFF,
manually opened door or during battery operation.