Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page 14
3.
Start-Up Instructions
If it is desired to run the car temporarily, during construction, refer to the Temporary
Run Connections section. Otherwise proceed through each of these steps and checks before
applying power.
3.1
Before Applying Power
The system has been programmed and tested for the specific elevator system. Refer to
the MH-3000 Setting sheet in the as-built schematic for default factory settings and
features.
3.1.1
Power and Grounding
WARNING: Confirm that the voltage of the incoming power matches
the controller before applying power to the controller.
Check the system for improper grounds before applying power to the controller.
With the power off, remove the fuses from the secondary of the main control circuit
transformer ("CCXF"). Check the safety circuit (terminals 1 through 6, and 14, 16, 18, 19)
for grounds.
NOTE: A meter will read a short through the windings of the main control
circuit transformer and/or any power supplies.
With the fuses still removed, apply power to the controller, and verify that the voltage at
the secondary of the main control circuit transformer ("CCXF") is 110-125VAC.
3.1.2
Input/Output Wiring
NOTE: The input/output boards are equipped with quick disconnect terminal
blocks. During the initial installation, you may want to remove the terminal
blocks, hook up your field wires to the terminal blocks, test the field wiring for
no shorts to ground or hot (terminal 1) before plugging these terminals back
into the I/O boards.
With the power off, and the fuses removed, check each input point for grounds, as
described in the section Power and Grounding. If a ground is observed, check the
schematic to determine if this is correct (it usually is NOT!).
With the power off check each output for grounds, also check for shorts to the hot side
(terminal 1). Note that some field devices, such as buzzers, will have very low resistance.
WARNING: Each output point should be isolated from ground and the
hot side.
