Installation and wiring
Connection of stand-alone option units
FR-A800
2 - 81
●
When the regenerative brake transistor is damaged, install a thermal relay as shown in the
following sequence diagrams to prevent overheat and burnout of the brake resistor. Properly
select a thermal relay according to the regenerative driving frequency or the rated power or
resistance of the brake resistor.
Since the FR-A820-00630(11K) or higher and FR-A840-00310(11K) or higher are not provided with
the PX terminal, a jumper needs not to be removed.
I002406E, I002407E
Fig. 2-58:
Protective circuit
E
CAUTION
●
If the resistor selection is incorrect, overcurrent may damage the inverter built-in brake
transistor. Besides, the resistor may be burned due to overheat.
●
If the selection of the thermal relay is incorrect, the resistor may be burned due to overheat.
R
PX
PR
P/+
(P3)
S/L2
T/L3
R/L1
MC
T
F
MC
MC
MC
S/L2
T/L3
R/L1
B
C
T
F
MC
MC
R
PX
PR
P/+
(P3)
Power
supply
Inverter
Thermal
relay
(OCR)
OFF
ON
OCR
contact
Disconnect jumper
Example 1
Power
supply
Thermal
relay
(OCR)
OFF
ON
OCR
contact
Disconnect jumper
Example 2
Brake
resistor
Brake
resistor
Inverter
Summary of Contents for FR-A800
Page 2: ......
Page 4: ......
Page 22: ...Contents XVIII ...
Page 30: ...Related manuals Introduction 1 8 ...
Page 122: ...Connection of stand alone option units Installation and wiring 2 92 ...
Page 180: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Page 934: ...Check first when you have a trouble Protective functions 6 46 ...
Page 1031: ...Appendix EC Declarations of Conformity FR A800 A 47 ...
Page 1032: ...EC Declarations of Conformity Appendix A 48 ...
Page 1033: ...Appendix EC Declarations of Conformity FR A800 A 49 ...
Page 1034: ...EC Declarations of Conformity Appendix A 50 ...
Page 1035: ...Appendix EC Declarations of Conformity FR A800 A 51 A 5 2 EMC Directive ...
Page 1036: ...EC Declarations of Conformity Appendix A 52 ...
Page 1037: ...Appendix EC Declarations of Conformity FR A800 A 53 ...
Page 1038: ...EC Declarations of Conformity Appendix A 54 ...
Page 1039: ...Appendix EC Declarations of Conformity FR A800 A 55 ...
Page 1040: ...EC Declarations of Conformity Appendix A 56 ...
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