CONTREX ML-Drive - Manual (Page 19)

WIRING
This section contains the power supply, input, and output wiring for the ML-Drive.
Please read this section prior to wiring the ML-Drive to ensure that you make the
appropriate wiring decisions.
NOTE:
The installation of this motor control must conform to area and local electrical
codes. For information, refer to the National Electrical Code (NEC) Article 430
published by the National Fire Protection Association, or the Canadian Electrical
Code (CEC). Refer to local codes as applicable.
Branch Circuit Protection: “Suitable For Use On A Circuit Capable Of Delivering
Not More Than 5,000 rms Symmetrical Amperes, 250 Volt Maximum.”
Class G branch circuit fuses rated 250V, 15A shall be provided in the end
application.
Motor overload protection shall be provided in the end installation in accordance
with the NEC.
This drive does not provide over-temperature sensing.
Use a minimum wire gauge of 18 AWG.
Use shielded cable to minimize equipment malfunctions from electrical noise.
Keep the AC power wiring (J2) physically separated from all other wiring on the
ML-Drive. Failure to do so could result in additional electrical noise and cause
the ML-Drive to malfunction.
A hand operated supply disconnect device must be installed in the final
application. The primary disconnect device must meet EN requirements.
Inductive coils on relays, contactors, solenoids that are on the same AC power
line or housed in the same enclosure should be suppressed with an RC network
across the coil. For best results, use resistance (r) values of 50 ohms and
capacitance (c) values of 0.1 microfarads.
Install an AC line filter or isolation transformer to reduce excessive EMI noise,
such as line notches or spikes, on the AC power line.
2 - 5
WARNING
Can cause severe injury, death, or damage
to equipment.
Hazardous voltages!
The ML-Drive should only be installed by a
qualified electrician.