Operational manual for dynamic braking unit
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Do not use any braking unit and braking resistor with loss and damaged
components.
High voltage DC current is present after connecting braking unit. Do not
touch the braking unit, internal component and PCB with hands;
otherwise the electric shock may occur.
Note:
Select appropriate moving and installing tools to ensure a safe and normal running of the
dynamic braking unit and avoid physical injury or death. For physical safety, the erector
should take some mechanical protective measurements, such as wearing exposure
shoes and working uniforms.
Ensure to avoid physical shock or vibration during delivery and installation.
Do not hold its front cover only. The cover may fall off.
Install away from children and other public places.
The dynamic braking unit cannot meet the requirements of low voltage protection in
IEC61800-5-1 if the sea level of installation site is above 2000m.
Please use the DBU on appropriate condition (See chapter Installation Environment).
Don't allow screws, cables and other conductive items to fall inside the DBU.
Fasten the screws while wiring, otherwise the loose wiring may cause fire or current
leakage.
1.3.2 Commission and running
Disconnect all power supplies applied before the terminal wiring and
wait.
Only qualified electricians are allowed to operate on the dynamic
braking unit.
Check the wiring before the running.
Do not touch the terminal of the control board during powering on.
Check the master details and voltage degree before running.
Do adjust and check the dynamic braking unit only after the POWER
LED is totally off and the voltage between (+) and (-) is 0.
Do not touch any internal components when the dynamic braking
unit is working.
The braking unit is the accessory device of the inverter. Please use it
with caution because the damage to the inverter and the dynamic
braking unit may occur.
Our company reserves the right to take the responsibility for the
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