Connection of stand-alone option units
Installation and wiring
2 - 96
2.10.4
Connection of the brake unit (BU type)
Connect the brake unit (BU type) correctly as shown below. Incorrect connection will damage the in-
verter. Remove the jumpers across terminals HB and PC and terminals TB and HC of the brake unit and
fit one across terminals PC and TB.
The BU type is compatible with FR-A820-03160(55K) or lower and FR-A840-01800(55K) and lower.
When the power supply is 400 V class, install a stepdown transformer.
For the FR-A820-00490(7.5K) or lower and FR-A840-00250(7.5K) or lower, be sure to remove the
jumper across terminals PR and PX.
I002411E
Fig. 2-67:
Connection with the brake unit BU
NOTES
The wiring distance between the inverter and brake unit (BU type), and between the brake unit
(BU type) and discharging resistor must be within 2 m each. Even when the cable is twisted, the
wiring length must be within 5 m.
If the transistors in the brake unit should becomes faulty, the resistor will overheat and result in a
fire. Install a magnetic contactor on the inverter's input side and configure a circuit that shut off
the current in case of a fault.
Remove the jumper across terminals P/+ and P1 only when connecting a DC reactor (FR-HEL).
U
V
W
M
R/L1
S/L2
T/L3
N/-
P/+
MCCB
MC
P
PR
OCR
N
HC
HB
HA
TB
OCR
PC
MC
MC
T
PR
PX
*2
Three-
phase AC
power
supply
Brake unit
(BU type)
Remove the
jumper
Fit a jumper
Motor
Inverter
ON
OFF
Discharging
resistor
Summary of Contents for FR-A820-00046 (0.4K)
Page 2: ......
Page 4: ......
Page 144: ...System configuration for Ethernet communication FR A800 E Installation and wiring 2 114 ...
Page 202: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Page 1090: ...Check first when you have a trouble Protective functions 6 50 ...
Page 1189: ...Appendix EC Declarations of Conformity FR A800 A 49 ...
Page 1190: ...EC Declarations of Conformity Appendix A 50 ...
Page 1191: ...Appendix EC Declarations of Conformity FR A800 A 51 ...
Page 1192: ...EC Declarations of Conformity Appendix A 52 ...
Page 1193: ...Appendix EC Declarations of Conformity FR A800 A 53 ...
Page 1194: ...EC Declarations of Conformity Appendix A 54 ...
Page 1195: ...Appendix EC Declarations of Conformity FR A800 A 55 ...
Page 1196: ...EC Declarations of Conformity Appendix A 56 ...
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Page 1198: ...EC Declarations of Conformity Appendix A 58 ...
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Page 1200: ...EC Declarations of Conformity Appendix A 60 ...
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Page 1202: ...EC Declarations of Conformity Appendix A 62 ...
Page 1203: ...Appendix EC Declarations of Conformity FR A800 A 63 ...
Page 1204: ...EC Declarations of Conformity Appendix A 64 ...
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Page 1206: ...EC Declarations of Conformity Appendix A 66 ...
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Page 1208: ...EC Declarations of Conformity Appendix A 68 ...
Page 1209: ...Appendix EC Declarations of Conformity FR A800 A 69 ...
Page 1210: ...EC Declarations of Conformity Appendix A 70 ...
Page 1211: ...Appendix EC Declarations of Conformity FR A800 A 71 ...
Page 1212: ...EC Declarations of Conformity Appendix A 72 A 7 2 FR A846 series ...
Page 1213: ...Appendix EC Declarations of Conformity FR A800 A 73 ...
Page 1214: ...EC Declarations of Conformity Appendix A 74 ...
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