Mitsubishi Electric FR-A720-0.4K Instruction Manual page 56

Connection of stand-alone option units
When the regenerative brake transistor is damaged, the following sequence is recommended to prevent overheat
and burnout of the brake resistor.
<Example 1>
MC
Power
Supply
T
F
OCR
ON
Contact
MC
OFF
MC
*1 Since the 11K or more inverter is not provided with the PX terminal, a jumper is not need to be removed.
*2 Refer to the table below for the type number of each capacity of thermal relay and the diagram below for the connection. (Always
install a thermal relay when using the 11K or more)
Power Supply High-Duty Brake
Voltage Resistor
FR-ABR-0.4K
FR-ABR-0.75K
FR-ABR-2.2K
FR-ABR-3.7K
200V FR-ABR-5.5K
FR-ABR-7.5K
FR-ABR-11K
FR-ABR-15K
FR-ABR-22K
FR-ABR-H0.4K
FR-ABR-H0.75K
FR-ABR-H2.2K
FR-ABR-H3.7K
400V
FR-ABR-H5.5K
FR-ABR-H7.5K
FR-ABR-H11K
FR-ABR-H15K
46
Thermal High-duty
relay brake resistor
Inverter
(OCR)(*2) (FR-ABR)
R/L1 P/+
S/L2 PX
T/L3 PR
Disconnect jumper. (*1)
Thermal Relay Type
(Mitsubishi product)
TH-N20CXHZ-0.7A
TH-N20CXHZ-1.3A
TH-N20CXHZ-2.1A
TH-N20CXHZ-3.6A
TH-N20CXHZ-5A
TH-N20CXHZ-6.6A
TH-N20CXHZ-11A
TH-N20CXHZ-11A
TH-N60-22A
TH-N20CXHZ-0.24A
TH-N20CXHZ-0.35A
TH-N20CXHZ-0.9A
TH-N20CXHZ-1.3A
TH-N20CXHZ-2.1A
TH-N20CXHZ-2.5A
TH-N20CXHZ-6.6A
TH-N20CXHZ-6.6A
<Example 2>
R
Power
Supply
T
F
ON
MC
OFF
MC
Contact Rating
110V 5AAC,
220V 2AAC(AC-11 class)
110V 0.5ADC,
220V 0.25ADC(DC-11 class)
Thermal
relay
Inverter
(OCR)(*2)
MC
R/L1 P/+
S/L2 PX
T/L3 PR
Disconnect jumper. (*1)
B
OCR
Contact
C
1/L
1
2/T
1
To the inverter
P/+ terminal
High-duty
brake resistor
(FR-ABR)
R
5/L
3
TH-N20
6/T
3
To the ABR