Operating Adjustments
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KEB Drive Parameters (VVVF Drive Only)
Normal Mode (Single Speed):
Up Going: Drive is always in control. Energy savings are realized when the escalator has a light
load because the drive can provide less voltage and current while maintaining contract speed.
When the load increases, the drive automatically increases voltage and current (only 2 modes—
rated current and less current, not variable).
Down Going: At start, drive accelerates escalator to contract speed (soft start to 60Hz). Once
contract speed is reached, the drive drops PM and picks PML. This switches power to the line.
In this configuration, power can be put back on the line if the load of the down going escalator
causes the motor to act like a generator.
Inspection speed is adjustable.
Energy Saving Modes (when code allows speed change during operation)
Sensors are mounted at the top and bottom entries to the escalator in order to detect someone
approaching or exiting the escalator.
Energy Saving Mode (Two Speeds, Starting Direction Only)
After there has been no activity for a user-defined period, the escalator will change from high
speed to low speed. When an entry detector senses someone approaching the escalator, the
speed is increased from low to high. An additional timer can be set to stop the escalator com-
pletely after there has been no activity for a user-defined period at slow speed. In this case,
when an entry detector senses someone approaching the escalator, the escalator changes from a
stopped condition to high speed in the starting direction only.
Intelligent Mode (Two Speeds, Two Directions Based on Entry Detection)
After there has been no activity for a user-defined period, the escalator will change from high
speed to low speed. When an entry detector senses someone approaching the escalator, the
speed is increased from low to high. An additional timer can be set to stop the escalator com-
pletely after there has been no activity for a user-defined period at slow speed. In this case,
when an entry detector senses someone approaching the escalator, the escalator changes from a
stopped condition to high speed AND goes in the direction determined by the entry detector.
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