ANYHZ FST-500 Series, Manual, Page: 19 / 151

FST 500 Manual
- Page 19 -
2.3 Main Circuit
2.3.1 Main Circuit Connection
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Mains power terminals (R/L1, S/L2, T/L3)

Connect these terminals (R/L1, S/L2, T/L3) via a non-fuse breaker or earth leakage breaker to
3-phase AC power (some models to 1-phase AC power) for circuit protection. It is unnecessary to
consider phase-sequence.

It is recommended to add a magnetic contactor (MC) in the power input wiring to cut off power
quickly and reduce malfunction when activating the protection function of AC motor drives. Both
ends of the MC should have an R-C surge absorber.

Please make sure to fasten the screw of the main circuit terminals to prevent sparks which is
made by the loose screws due to vibration.

Please use voltage and current within the regulation shown in Appendix A.

When using a GFCI (Ground Fault Circuit Interrupter), select a current sensor with sensitivity of
200mA, and not less than 0.1-second detection time to avoid nuisance tripping.

Do NOT run/stop AC motor drives by turning the power ON/OFF. Run/stop AC motor drives by
RUN/STOP command via control terminals or keypad. If you still need to run/stop AC drives by
turning power ON/OFF, it is recommended to do so only ONCE per hour.

Do NOT connect 3-phase models to a 1-phase power source.
Terminal Symbol Explanation of Terminal Function
R/L1, S/L2, T/L3 AC line input terminals (three phase)
U/T1, V/T2, W/T3 Motor connections
B1
– B2
Connections for brake resistor (optional)
Earth Ground