Download user manual elevator control panel close loop dc mgset cqm1

7. UNCONTROLLED SPEED DETECTION CIRCUIT ADJUSTMENT FOR 200 FPM
ELEVATORS ONLY:
(HT1-HT2)
signals
Min
Max
CVI output
signal
Cars running at 200 FPM :
These elevator controllers contain the PC board "JRT-OVS-HT1 ". That protection needs to be calibrated
at 150 FPM for code requirement.
As soon as the elevator speed exceeds 150 FPM in inspection or levelling, the car will be stopped
immediately and placed out of service.
The yellow led indicates power on the unit. When the red led is on, it indicates that the actual elevator
speed exceeds the speed adjustment level.
Circuit adjustment:
? Change the inspection speed to 150 FPM.:
? Use the "SP3" potentiometer.
? Now, move the elevator to reach 150 FPM. When the elevator runs at 150 FPM. turn the
potentio meter on the pc board (JRT-005-HT1) up you will see the red led flashing. The card
adjustment is done.
? Put back the "SP3" to the previous value.
? In normal operation, the red led should turn on when the elevator accelerates and turn off when it
decelerates. It should never be activated in inspection mode or when the elevator enters in the
levelling zone.
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