Simplified Circuit Diagram Of The Braking Unit; Wiring - Hitachi HBU-2015 Instruction Manual

IN-
IN+ OUT+ OUT-
R S
N
4220
HBU-4220
C. Simplified circuit diagram of the braking unit
D. Wiring
1. The wiring to the HBU should be passed through the wiring hole provided on the bottom of the unit.
2. The wires from the HBU to the inverter and to the resistor carry high current with significant harmonic content.
To minimize the chance for interference, lay out signal wire as far away as possible from these high current
wires. Use shielded signal wires as necessary to eliminate interference.
3. The wiring distance between braking unit and braking resistor and between braking unit and inverter should
meet the requirements as followed pictures. Please do make sure that the connections between those units are
in a bundle and they should be shielded or twisted pair.
4. For 400 V class units, 1000 V rated wire should be used. For 200 V class, 600 V rated wire is sufficient.
Braking
maximum
Resistor
18
Ta
Tc
Tb
Ta Tb Tc
P PB
P1
10 meters
IN-
IN+
N P
HBU-2015/2030/4015/4030/4045 2015/2030/4030/4045
Figure 7
Braking
Unit
Hitachi America, Ltd.
Tarrytown, NY
Tb
Tc
OUT+ OUT-
PB
P1
5 meters
maximum
Inverter