Product Description
The 8C64D is a part of Reliance Electrics ImPak Plus series. For this controller, the autotransformers may step up or down the AC power supply voltage, they do not isolate the drive from the AC line. The users should consider using an isolation transformer in lieu of an autotransformer for the following advantages: if a person should come in contact with the AC incoming line, an isolation transformer would risk of severe or fatal injury. The AC power line disturbances and transients are minimized by an isolation transformer, thus reducing possible damage to solid-state components. With an isolation transformer, the drive is free of plant power system grounds, providing electrical isolation for the drive from those grounds. Damaging the currents may be avoided in instances where the DC output is accidentally grounded or where the DC motor circuits go to ground. There is motor overload protection with this controller. When the reliance utilizes a DC motor thermostat for motor thermal overload protection. The thermostat is brought out through the motor terminal box as leads P1 and P2. These two leads must be wired to the control terminals 32 and 132. The thermostat leads can be run with the motor armature and field power wiring. If an additional inverse time overload is added, its normally closed contact should be wired in place of the motor thermostat and connected to the controller at terminals 32 and 132, or in series with the motor thermostat when both are used.
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