Motion 3000ES Escalator Control
4 Manual # 42-02-E001
AC Voltage Verification and Wiring
The AC wiring instructions in this section describe wiring from commercial power. The majority
of technical information is contained in the MCE job prints package and referenced here as nec-
essary. As shown in the job prints (if specified), an isolation transformer may be used to clean
up “dirty” commercial power or shift voltage levels, and also prevent noise from electrical
equipment from being introduced back into the building power system. Isolation transformers
are specified in some, but not all, installations.
AC Voltage Verification and Wiring instructions include:
• Verifying main line power and wiring the controller
•Initial power up
All conductors entering or leaving the controller cabinet must be in conduit. High voltage, high
current conductors, such as power conductors from the fused disconnect or isolation trans-
former, must be separated from control wires. It is essential that control wires be routed
through a separate conduit away from high current conductors.
Incoming power to the controller and outgoing power wires to the motor must be in their
respective grounded conduit.
Verifying Main Line Power and Wiring the Controller
1. Consult the job prints. Verify that AC supply is as specified.
Proper motor branch circuit protection in the form of a fused disconnect switch or circuit
breaker must be provided for each escalator according to applicable electrical code. Each dis-
connect or breaker must be clearly labeled with the escalator number. The electrical contractor
must determine the wire size for the main AC power supply and for the wiring from the discon-
nect or breaker to the escalator controller.
2. If an isolation transformer is used, connect AC supply wiring to the transformer, and
transformer outputs to the controller, as shown in the job prints.
3. If no isolation transformer is used, connect AC supply wiring to the controller as shown
in the job prints.
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