Download VCI -- PLC Traction User Manual

3. Start-Up Instructions
Traction systems should not be run in temporary mode, but should use the PLC to provide
all required signals for running the car. 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, so no further
changes should be made without consulting with Virginia Controls.
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. Using a Volt-Ohm meter connect one lead to terminal 35 (ground) and touch
the other lead to each terminal to be tested. The resistance should be considerably greater
than 100 ohms.
NOTE: If the fuses are not removed, the meter will read a short through the
windings of the main control circuit transformer.
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 previous 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.
GE 90-30 User Manual
Page 10