3 Wiring and Connection3.1.3 Typical Main Circuit Wiring Examples3-43.1.3 Typical Main Circuit Wiring ExamplesNote the following points when designing the power ON sequence.• Design the power ON sequence so that main power is turned OFF when a servo alarm signal (ALM) is output.• The ALM signal is output for a maximum of five seconds when the control power is turned ON. Take this into consid-eration when designing the power ON sequence. Design the sequence so the ALM signal is activated and the alarmdetection relay (1Ry) is turned OFF to stop the main circuit’s power supply to the SERVOPACK.• Select the power supply specifications for the parts in accordance with the input power supply.The typical main circuit wiring examples are shown below.• When turning ON the control power supply and the main circuit power supply, turnthem ON at the same time or turn the main circuit power supply after the controlpower supply. When turning OFF the power supplies, first turn the power for the maincircuit OFF and then turn OFF the control power supply.• Provide separate AC/DC power supplies for the main circuits and for controls.• Power supplies must have double or reinforced insulation that conforms to safetystandards.• Do not connect devices (such as motors or solenoids) that greatly change the load ordevices (such as electromagnetic switches) that generate surge voltages to the con-troller power line.Failure to observe this caution may result in deterioration of the internal elements or ablown fuse.WARNING• Voltage remains in the SERVOPACK even after the power supply is turned OFF. To prevent electric shock,do not touch the input terminals for the main circuit power supply or those for the control power supply.Before wiring or inspections, confirm that the SERVOPACK has completely discharged.Control power supplyALM signal5.0 s max.L1ENCSERVOPACKSGDVUVWM0 V1Ry811 1D1KMNon-isolated AC/DCconverter for maincircuit power supplyL2CN11QFR T+24 V1Ry1PL1KM1SA1KM1Ry1QF1FLT1KM: Molded-case circuit breaker: Noise filter: Magnetic contactor (for main circuit power supply)1Ry1PL1SA1D: Relay: Indicator lamp: Surge absorber: Flywheel diodeC1C2ALMCOM_SG1FLTCN4CN3Non-isolated AC/DCconverter for controlpower supply(For servoalarm display)supply ONMain powersupply OFFMain powerAnalog
