Parker Hannifin S.p.A. Divisione S.B.C. user’s manual TWIN-N and SPD-N
13
Dangerous movements ! Danger of life !
• Dangerous movements can be caused by faulty control of the connected motor.
Same common example are :
Improper or wrong installation and wiring
Wrong input parameters before or during operation (programming)
Defective components (drive, motor, wires, sensors, etc...)
Incorrect control (software or firmware errors)
• In order to prevent personal injury due to unintended dangerous motor movements, pay the
maximum attention and work on the machine with a qualified and tested safety system :
Isolate the drive power connection.
Mount the emergency stop switch in the immediate reach of the operator. Verify that the
emergency stop works before start-up. Don’t operate the machine if the emergency stop is not
working.
Install properly fences, guards, coverings and light barriers in order to prevent people from
accidentally entering the machine’s range of motion.
Secure vertical axes against falling or dropping after switching off the motor power
Make sure that the drives are brought to a safe standstill before accessing or entering the
danger zone.
1.4.6 Safety instructions for maintenance
• It is extremely dangerous to remove covers or part of the external enclosure from the
equipment. Risk of personal injury. The warranty immediately decay.
• In case of malfunction consult the alarm list described in the user manual or address Parker
Hannifin. The drives are not field repairable.
1.4.7 Compatibility with RCD devices
The use of RCD (Residual Current Devices) is strongly not recommended.
If the use of RCD is mandatory, use type B only (for DC and AC prospective earth current). Set the
trip level at 300mA (fire protection level) or more.
Setting the trip level at 30mA (protection level against direct contact) is possible only using time-
delayed RCD and low leakage current EMC filters, but in any case the drives are not guaranteed to
operate with 30mA trip level.
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