Inovance MDBUN Series, User Manual

Page: 3 / 24

Inovance MDBUN Series Braking Unit User Manual
Page 3 of 24
WARNING

Connect the (+) and (-) terminals of the DC bus correctly.
Otherwise, the device may be damaged. Pay attention to the
terminal marks.

Ensure that wiring meets the EMC requirements and local safety
standard. Use wire sizes recommended in the manual. Failure to
comply may result in accidents.

Never connect the braking resistor between the DC bus terminals (+)
and (-). Failure to comply may result in a fire.
Before
power-on
WARNING

Check that the voltage class of the power supply is consistent with
the rated voltage class of the braking unit, and that the wiring
between the braking unit and the braking resistor is secure.
Otherwise, the braking unit may be abnormal or damaged.

Do not perform the voltage resistance test on any part of the braking
unit because such test has been done in the factory. Failure to
comply will result in accidents.
DANGER

Cover the braking unit properly before power-on to prevent electric
shock.

All peripheral devices must be connected properly under the
instructions described in this manual. Failure to comply will result in
accidents
After
power-on
DANGER

Do not open the cover of the braking unit cover after power-on.
Failure to comply may result in electric shock.

The braking unit automatically performs safety check on the
external strong-current circuit after power-on. Do not touch the +, -,
P(+), and BR terminals. Failure to comply may result in electric
shock.

Do not touch the externally connected braking resistor. Failure to
comply may result in electric shock.
During
operation
DANGER

Do not touch the fan or the braking resistor to check the temperature.
Failure to comply will result in personal burnt.

Signal detection must be performed only by qualified personnel
during operation. Failure to comply will result in personal injury or
damage to the braking unit.
During
maintenance
DANGER

Repair or maintenance of the braking unit may be performed only by
qualified personnel. Failure to comply will result in personal injury or
damage to the braking unit.

Do not repair or maintain the braking unit at power-on. Failure to
comply will result in electric shock.

Repair or maintain the braking unit only after ensuring that the input
bus voltage is lower than 36 VDC, 5 minutes after power off.
Otherwise, residual charge on the capacitor may result in personal
injury.

Set and check the parameters again after the braking unit is
replaced.

All the pluggable components must be plugged or removed only after
power-off.