Operational manual for dynamic braking unit
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5.3 Main control terminal of the braking unit
Functions description:
Input terminal of the external fault. EFI-COM is defaulted to be short
circuited in factory. When the external fault occurs, it will be switched off
and the braking unit outputs fault signal.
Slave parallel input terminals of the braking unit
Master parallel output terminals of the braking unit
Common terminal of EFI, PI and PO
1. Fault output terminal. When fault occurs to the braking unit, the fault
relay will output fault report signal.
2.ROA NO, ROB NC, ROC is the common terminal
1. Contact Rating: 3A/AC250V, 1A/DC30V
2. Do not use it as the high frequency switch output (with cautions)
When there is only one braking unit, please connect the DBU, braking unit and braking resistor
according to figure 4. It will work after setting the voltage degree and the braking threshold.
5.4 Adjustment
The braking unit and the braking resistor need not to be adjusted. In special, do not adjust the
braking unit on the situation of “voltage selection setting”.
5.5 Voltage selection setting
The setting of braking threshold: set the voltage selection of the braking unit according to the
input voltage of the DBU. The voltage selection can only performed when disconnecting the
power supply. Below is the relationship between the voltage selection and the original braking
voltage:
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