Safety Information and Precautions
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Safety Information and Precautions
This User Guide is packaged together with the IS620P Servo Drive. It contains basic information for quick
start of the drive. For safety and more information, please refer to the IS620P Advanced User Guide, which
can be downloaded on the website http://www.inovance.cn.
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Electrical Safety
Extreme care must be taken at all times when working with the Servo Drive or within the area of the Servo
Drive. The voltages used in the Servo Drive can cause severe electrical shock or burns and is potentially
lethal. Only authorized and qualied personnel should be allowed to work on Servo Drives.
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Machine/System Design and Safety of Personnel
Machine/system design, installation, commissioning startups and maintenance must be carried out by
personnel who have the necessary training and experience. They must read this safety information and the
contents of this manual. If incorrectly installed, the Servo Drive may present a safety hazard.
The Servo Drive uses high voltages and currents (including DC), carries a high level of stored electrical
energy in the DC bus capacitors even after power OFF. These high voltages are potentially lethal.
The Servo Drive is NOT intended to be used for safety related applications/functions. The electronic
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STOP
& START
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control circuits within the Servo Drive must not be relied upon for the safety of personnel. Such
control circuits isolates mains power voltages from the output of the Servo Drive. The mains power supply
must be disconnected by an electrical safety isolation device before accessing the internal parts of the
Servo Drive.
Safety risk assessments of the machine or process system which uses a Servo Drive must be undertaken
by the user and or by their systems integrator/designer. In particular the safety assessment/design must
take into consideration the consequences of the Servo Drive failing or tripping out during normal operation
and whether this leads to a safe stop position without damaging machine, adjacent equipment and machine
operators/users. This responsibility lies with the user or their machine/process system integrator.
System integrator/designer must ensure the complete system is safe and designed according to the
relevant safety standards. Inovance Technology and Authorized Distributors can provide recommendations
related to the Servo Drive to ensure long term safe operation.
The installer of the Servo Drive is responsible for complying with all relevant regulations for wiring, circuit
fuse protection, earthing, accident prevention and electromagnetic (EMC regulations). In particular fault
discrimination for preventing re risk and solid earthing practices must be adhered to for electrical safety
(also for good EMC practice). Within the European Union, all machinery in which this product is used must
comply with required directives.
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Electrical Installation - Safety
Electrical shock risk is always present within a Servo Drive including the output cable leading to the motor
terminals. Where dynamic brake resistors are tted external to the Servo Drive, care must be taken with
regards to live contact with the brake resistors, terminals which are at high DC voltage and potentially
lethal. Cables from the Servo Drive to the dynamic brake resistors should be double insulated as DC
voltages are typically 600 to 700 VDC.
Mains power supply isolation switch should be tted to the Servo Drive. The mains power supply must be
disconnected via the isolation switch before any cover of the Servo Drive can be removed or before any
servicing work is undertaken stored charge in the DC bus capacitors of the PWM inverter is potentially
lethal after the AC supply has been disconnected. The AC supply must be isolated at least 10 minutes
before any work can be undertaken as the stored charge will have been discharged through the internal
bleed resistor tted across the DC bus capacitors.
Whenever possible, it is good practice to check DC bus voltage with a VDC meter before accessing the
inverter bridge. Where the Servo Drive input is connected to the mains supply with a plug and socket,
then upon disconnecting the plug and socket, be aware that the plug pins may be exposed and internally
connected to DC bus capacitors (via the internal bridge rectier in reversed bias). Wait 10 minutes to allow
stored charge in the DC bus capacitors to be dissipated by the bleed resistors before commencing work on
the Servo Drive.
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