Allow The Machine To Be Energized: While Doors Are Closing With Motor Only - MCi iControl User Manual

Final Adjustment
Allow the machine to be energized:
While doors are closing with motor only
This Pre-Start Sequence option allows the motor to be energized while the doors are closing so
that when the doors are locked, the brake picking sequence can be started immediately. The
diagram below shows the parameters that affect this option and the resulting sequence of oper-
ation.
Prestart Sequence with Motor and No (Brake) Pick
Motor
Door Open
Contactor/
Limit High
Drive Enable
Prestart
Sequence
Delay
For a DC control, Pick Delay can be set to zero so long as the Pre-Start Sequence Delay is
adjusted so that the motor is energized and able to hold the car at zero speed when the doors
become locked.
For an AC control, some Pick delay may be required because it takes time for the drive to mag-
netize the motor once the contactor is picked and the drive enabled. A "Drive Ready On Fault" is
generated if Pick delay is too short.
4-38 Manual # 42-02-2222
Doors
Brake
Contactor
Locked High
Smooth Pick
Pick Delay
Speed Pick Delay 1 Timer
Pattern
Applied
Repick
Time
Pattern
Brake
Pick Voltage
80%
Hold Voltage
of Pick Volgage
Weakening
Voltage
Hold Delay