Filter
Top Products
32
Connection of stand-alone option unit
(1) When using the brake resistor (MRS type, MYS type) 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 type, MYS type) 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-D720-008 or 014 and 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
MYS220W50
(two units in parallel)
TH-N20CXHZ-5A
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
FR-ABR-3.7K TH-N20CXHZ-3.6A
FR-ABR-5.5K TH-N20CXHZ-5A
FR-ABR-7.5K TH-N20CXHZ-6.6A
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 terminals P/+ and N/-. This could cause a fire.
MC
Inverter
MC
R
PR
P/+
S/L2
T/L3
R/L1
OFF
ON
OCR
Contact
Power supply
F
<Example 1>
MC
High-duty brake
resistor (FR-ABR)
T
*2
Thermal relay
(OCR) (*1)
Inverter
MC
R
PR
P/+
S/L2
T/L3
R/L1
OFF
ON
B
C
Power supply
F
<Example 2>
MC
High-duty brake
resistor (FR-ABR)
OCR
Contact
T
MC
*2
Thermal relay
(OCR) (*1)
To the inverter
P/+ terminal
To a resisto
r
TH-N20
1/L1 5/L3
2/T1 6/T3