STEL Range Agitated Pressure Pots User Guide

Precautions for use

This chapter covers limitations and requirements the user should consider when using the product.

Be sure to match the motor output power with the driver output power.

Connect protective devices to the power line Connect a circuit breaker or earth leakage breaker to the driver’s power line to protect the primary circuit. If an earth leakage breaker is to be installed, use one incorporating high-frequency noise elimination measures. Refer to “Preventing leakage current” below for the selection of protective devices. Do not use a solid-state relay (SSR) to turn on/off the power A circuit that turns on/off the power via a solid-state relay (SSR) may damage the motor and driver. Do not conduct the insulation resistance measurement or dielectric strength test with the motor and driver connected Conducting the insulation resistance measurement or dielectric strength test with the motor and driver connected may result in damage to the product. Grease measures On rare occasions, grease may ooze out from the gear - head. If there is concern over possible environmental damage resulting from the leakage of grease, check for grease stains during regular inspections. If leakage happen frequently and lead to problems in production, contact ADL for support. Caution when using under low temperature environment When an ambient temperature is low, since the load torque may increase by the oil seal or viscosity increment of grease used in the gear - head, the ouput torque may decrease or an overload alarm may generate. However, as time passes, the oil seal or grease is warmed up, and the motor can be driven without generating an overload alarm. Preventing leakage current Stray capacitance exists between the driver’s current-carrying line and other current-carrying lines, the earth and the motor, respectively. A high-frequency current may leak out through such capacitance, having a detrimental effect on the surrounding equipment. The actual leakage current depends on the driver’s switching frequency, the length of wiring between the driver motor, and so on. When connecting an earth leakage breaker, use one of the following products offering

!

!

resistance against high frequency current: Mitsubishi Electric Corporation: NV Series

Noise elimination measures Provide noise elimination measures to prevent a motor or driver malfunction caused by external noise. For more effective elimination of noise, use a shielded I/O signal cable or attach ferrite cores if a non-shielded cable is used.

page 25