Operational manual for dynamic braking unit
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DBU (no matter it is relative to the braking unit or not). Please install
the safety fuses special for the semiconductors.
Note:
Do not switch on or off the input power supply of the dynamic braking unit frequently.
Ensure correct setting of the braking units and resistors.
Do not carry out any voltage test on DBU; otherwise damage to the main circuit of the
semiconductor components may occur.
If multiple DBU are installed in a cabiner for paralle application, please install a fan or
other cooling devices.
DBU needs temperature and other protections. It is necessary to isolate the device if fault
occurs to the device and cause heating. If not isolate, our company reserves the right to
the accident.
1.3.3 Maintenance and replacement of components
Only qualified electricians are allowed to perform the maintenance,
inspection, and components replacement of the DBU.
Disconnect all power supplies to the DBU before the terminal wiring.
Wait for at least the time designated on the DBU after disconnection.
Take measures to avoid screws, cables and other conductive
matters to fall into the DBU during maintenance and component
replacement.
Note:
Please select proper torque to tighten screws.
Keep the dynamic braking unit, parts and components away from combustible materials
during maintenance and component replacement.
Do not carry out any isolation and voltage test on the dynamic braking unit and do not
measure the control circuit of the dynamic braking unit by megameter.
Carry out a sound anti-electrostatic protection to the dynamic braking unit and its internal
components during maintenance and component replacement.
1.3.4 Scrap treatment
There are heavy metals in the dynamic braking unit. Deal with it as
industrial effluent.
When the life cycle ends, the product should enter the recycling system.
Dispose of it separately at an appropriate collection point instead of
placing it in the normal waste stream.
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