Chapter 2 Notes Of Handling - Hitachi SRW-0J Instruction Manual

2.1 Handling the Cable (Optional)
1. Avoid pulling the cable forcibly for operation or moving the operator by its cable.
2. Fix the cable when the operator is housed in the object inverter panel.
3. Separate the cable more than 15cm from the main circuit, the main circuit relay, and the
circuit control cable.
4. The allowable connection/disconnection frequency of the cable is about 1000 times. If
errors or unreadable characters are often contained in displayed data, replace the cable.
(If the same error symptom appears even after the cable replacement, replace the
remote operator itself.)
5. Be sure to turn OFF the power supply of the inverter and confirm the POWER lamp is
OFF before connecting /disconnecting the operator cable.
2.2 Providing an EMERGENCY Switch
The operator may not stop in some cases when the stop key is pressed if an abnormal event
such as contact error, cable break, etc. occurs in the operator itself, its cable or connect
during operation.
To prevent such a trouble or unexpected accidents, it is recommended to provide an
EMERGENCY STOP switch to the inverter terminal RS or FRS.
2.3 Operating Life of Memory Elements of the Remote Operator unit
The memory elements of remote operator unit are limited in operating life about 100,000
times of data writing frequency. When the operating life is reached "R-ERROR DATA ROM"
will appear and the read, and the copy functions will be disabled. But monitor and data
setting are able to use.
CM1 (RS)

Chapter 2 Notes of handling