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Connection of stand-alone option unit
(1) When using the brake resistor (MRS) and high-duty brake resistor (FR-ABR)
It is recommended to configure a sequence, which shuts off power in the input side of the inverter by the external thermal
relay as shown below, to prevent overheat and burnout of the brake resistor (MRS) and high duty brake resistor (FR-ABR)
in case the regenerative brake transistor is damaged. (The brake resistor can not be connected to the FR-D720S-008 or
014.)
∗1
Refer to the table below for the type number of each capacity of thermal relay and the diagram below for the connection.
∗2
When the power supply is 400V class, install a step-down transformer.
Power
Supply
Voltage
Brake Resistor
Thermal Relay Type
(Mitsubishi product)
Contact Rating
200V
MRS120W200
TH-N20CXHZ-0.7A
110VAC 5A,
220VAC 2A(AC11 class)
110VDC 0.5A,
220VDC 0.25A(DC11class)
MRS120W100
TH-N20CXHZ-1.3A
MRS120W60
TH-N20CXHZ-2.1A
MRS120W40
TH-N20CXHZ-3.6A
Power
Supply
Voltage
High-duty
Brake Resistor
Thermal Relay Type
(Mitsubishi product)
Contact Rating
200V
FR-ABR-0.4K
TH-N20CXHZ-0.7A
110VAC 5A,
220VAC 2A(AC11 class)
110VDC 0.5A,
220VDC 0.25A(DC11 class)
FR-ABR-0.75K
TH-N20CXHZ-1.3A
FR-ABR-2.2K
TH-N20CXHZ-2.1A
400V
FR-ABR-H0.4K
TH-N20CXHZ-0.24A
FR-ABR-H0.75K
TH-N20CXHZ-0.35A
FR-ABR-H1.5K
TH-N20CXHZ-0.9A
FR-ABR-H2.2K
TH-N20CXHZ-1.3A
FR-ABR-H3.7K
TH-N20CXHZ-2.1A
FR-ABR-H5.5K
TH-N20CXHZ-2.5A
FR-ABR-H7.5K
TH-N20CXHZ-3.6A
NOTE
Brake resistor can not be used with the brake unit, high power factor converter, power supply regeneration converter,
etc.
Do not use the brake resistor with a lead wire extended.
Do not connect a resistor directly to the DC ter and -. This could cause a fire.
MC
Inverter
MC
R
PR
+
S/L2
T/L3
R/L1
ON
OFF
OCR
Contact
Power supply
F
<Example 1>
MC
High-duty brake
resistor (FR-ABR)
T
Thermal relay
(OCR) (*1)
Inverter
MC
R
PR
+
S/L2
T/L3
R/L1
ON
OFF
B
C
Power supply
F
<Example 2>
MC
MC
High-duty brake
resistor (FR-ABR)
OCR
Contact
T
Thermal relay
(OCR) (*1)
To the inverter
+
terminal
To a resistor
TH-N20
1/L
1
5/L
3
2/T
1
6/T
3
Содержание FR-D700 Series
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