Mitsubishi Electric FATEC FR-A800 Manual page 136

7
REVIEW OF INSTALLATION ENVIRONMENT
(6) Wiring of the high-duty brake resistor (FR-ABR)
A built-in brake resistor is connected to terminals P and PX. When the operation is frequently
performed, only if the built-in brake resistor has insufficient heat power, remove the jumper
across the terminals PR and PX. Then, connect the high-duty brake resistor to the terminals P
and PR.
(Note) • Do not connect resistors other than the high-duty brake resistor.
• There is no terminal PX in models which do not have the brake resistor.
• High-duty brake resistors cannot be connected to models which do not have the brake
transistor.
When the regenerative brake transistor is damaged, the following sequence is recommended to
prevent overheat and burnout of the brake resistor.
Power
supply
∗1 Since the inverter without built-in brake resistor is not provided with the PX terminal, a jumper need not to be removed.
∗2 Refer to the table below for the thermal relay types for each capacity. Refer to the diagram below for the connection.
(Always install a thermal relay when using a brake resistor whose capacity is 11K or higher.)
Power
High-duty brake
supply
resistor
voltage
FR-ABR-0.4K
FR-ABR-0.75K
FR-ABR-2.2K
FR-ABR-3.7K
200 V 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-H1.5K
FR-ABR-H2.2K
FR-ABR-H3.7K
400 V
FR-ABR-H5.5K
FR-ABR-H7.5K
FR-ABR-H11K
FR-ABR-H15K
FR-ABR-H22K
MC Inverter
R/L1 P/+
S/L2
T/L3
T
PX
F
PR
B
OCR
OFF ON
contact
M
Brake
C
C
transistor
MC
N/-
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-3.6A
TH-N20CXHZ-6.6A
TH-N20CXHZ-6.6A
TH-N20-9A
7.3 Problems and measures when using inverter
High-duty brake
Thermal relay
resistor (FR-ABR)
(OCR)(∗2)
R
Built-in brake resistor
Remove the jumpers. (∗1)
Contact rating
110 VAC: 5 A,
220 VAC: 2 A (AC11 class)
110VDC: 0.5 A,
220 VDC: 0.25 A (DC11
class)
1/L 5/L
1 3
TH-N20
2/T
6/T
1
3
To the brake
To FR-ABR
unit terminal P/+
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