Recently, a customer having two identical units was experiencing problems with only one of the units, despite the fact that both were similarly configured and running the same materials. After investigation of his error code (OV-C), we asked him to check his supply voltage. What was discovered was that the voltage source for each unit was from a separate feed. The transformer output that was supplying the roll coater was providing 240v, but was spiking as high as 300V during operation. Relocating the unit to a more stable power source corrected this condition and the customer was able to resume work at full capacity.

Glue Machinery Corporation Hot Coat and Hot Coat Plus industrial hot melt roll coaters have several diagnostic fault codes that may be displayed on the motor speed control (inverter) in case of system error. This feature is one of the many built in benefits and features of Glue Machinery Corporation equipment. Aside from our proven customer service and service department, we also provide superior product documentation with all our products. As always, technical support is just a phone call away. (Ask for Les, Matt, or John in the service and repair department at 1-888-202-2468)

Hot Coat Motor Speed Control Diagnostic Location

Hot Coat Motor Speed Control Diagnostic Location

A list of fault codes and corrective actions are listed below for your reference.

OC-S Over current during start. Motor is shorted. Check and fix motor or Motor has ground fault - Locate and correct ground fault

OC-A Over current during accel. Accel time is too short - extend accel time

OC-C Over current during constant speed mode. Excessive load changes - check load condition

OC-D Over current during decel. Decel time is too short - increase decel time

OV-C Over voltage during constant speed mode. Input voltage fluctuation - check AC supply to motor/unit, verify that it is constant and not over rated voltage

LV-C Low voltage during constant speed mode. Input voltage drop - verify that the incoming AC supply meets minimum voltage requirements

OH-C Overheat during constant speed mode. Load is too high - investigate load condition

OH-1 Braking resistor overload . Decel time too short - increase decel time -or- frequent starting and stopping of unit - prolong run/stop cycle

OL-1 Motor overload. Load is too high - investigate load on roller, correct if needed

OL-2 Inverter overload. Load is too high - investigate load on roller, correct if needed

OL-3 Over torque. Load is too high - investigate load on roller, correct if needed

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