Saftronics VG520P4 Technical Manual page 5

•
Do not connect Power Factor Correction Capacitors or LC/RC noise filters to the output circuits. The Inverter can be
damaged or internal parts burnt if these devices are connected.
•
Do not connect electromagnetic switches or contactors to the output circuits. If a load is connected while the Inverter is
operating, surge current will cause the overcurrent protection circuit inside the Inverter to operate.
§
Setting User Constants
•
Disconnect the load (machine, device) from the motor before Auto-Tuning. The motor may turn, possibly resulting in
injury or damage to equipment. Also, motor constants cannot be correctly set with the motor attached to a load.
§
Trial Operation
•
Check to be sure that the front cover is attached before turning ON the power supply. Do not remove the front cover
during operation. An electric shock may occur.
•
Do not come close to the machine when the fault reset function is used. If the alarm is cleared, the machine may start
moving suddenly. Also, design the machine so that human safety is ensured even when it is restarted. Injury may
occur.
•
Provide a separate emergency stop switch; the Digital Operator STOP key is valid only when the function is set. Injury
may occur.
•
Reset alarms only after confirming that the RUN signal is OFF. If an alarm is reset with the RUN signal turned ON, the
machine may suddenly start. Injury may occur.
•
Do not touch the radiation fins (heat sink), braking resistor, or Braking Resistor Unit. These can become very hot.
Otherwise, a burn injury may occur.
•
Be sure that the motor and machine is within the applicable ranges before starting operation. Otherwise, an injury may
occur.
•
Provide a separate holding brake if necessary. Otherwise, an injury may occur.
•
Do not check signals while the Inverter is running. Otherwise, the equipment may be damaged.
•
Be careful when changing Inverter settings. The Inverter is factory set to suitable settings. Otherwise, the equipment
may be damaged. You must, however, you must set the power supply voltage jumper for 400 V class Inverters of 18.5
kW or higher (See Chapter 5, 5.2.4 Setting Input Voltage).
Firmware – S1043
Revision: 2 (9/98)
PREFACE
CAUTION
CAUTION
WARNING
CAUTION
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