Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page 18
NOTE: To run the car from the machine room, without the doors opening,
turn off the DOL Cutout Switch located on the MH4 or MH5 printed circuit
board. This will de-energize the Door Open Limit Sw Input, and prevent the
doors from opening.
NOTE: If the car does not run, verify that no door protective device (Door
Open Button, Safety Edge, Electric Eye, Infra-red Curtain) is holding the
doors open. Verify that the car is not stuck in leveling. Verify that the Door
Contacts input is energized and the Door Close Limit input is de-energized.
4.5
Car and Hall Calls
To observe the operation of the car and hall calls, the system must be in automatic
operation (LED D1 on the CPU board should be on.) Verify that all car and hall calls work.
NOTE: On DUPLEX systems the doors must be allowed to operate for the
calls to be canceled properly.
Each call will be canceled when the car initiates slowdown for the call, or when the doors
start to re-open for the call if the car is already at the floor.
If both hall calls are entered at an intermediate landing, and no other calls are in the
system, the doors will close after answering one of the calls, then re-open in response to
the other call.
4.6
Door Operation
Verify that any required changes to the door operator, as shown on the door operator
drawings, have been made correctly.
Check the Door Open and Close Limits for proper operation.
If the doors attempt to open for too long, the open cycle will be stopped. The car will
then respond to other calls, and try to open the doors again.
If the doors fail to close properly within a preset time, the doors will re-open, and try to
close again. If the doors closed, but the car does not run in response to a call, the doors
will re-cycle, and the car will try again.
For very slow doors, the Door Stuck Timer, which initiates the Door Open and Door Close
Fail, as described above, may need to be increased. It is normally set at 15 seconds.
If Nudging Operation is activated, the Electric Eye will be disabled when the Nudging
Timer has tripped AND the doors are fully open. If the nudging timer trips while the doors
are closing, the Nudging Buzzer will turn on, and the Electric Eye will remain active. If the
doors do reopen fully, then the Electric Eye will be cut out. The Safety Edge Input remains
active on nudging.
