Mitsubishi Electric 700 Series Instruction Manual page 37

Connection of stand-alone option unit
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 cannot be connected to the
0.1K and 0.2K.)
Power supply
∗3 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 a brake resistor whose capacity is 11K or higher)
∗4 When the power supply is 400V class, install a step-down transformer.
Power
Supply Brake Resistor
Voltage
MRS120W200
MRS120W100
MRS120W60
200V
MRS120W40
MYS220W50 (two units in
parallel)
Power
High-duty
Supply
Brake Resistor
Voltage
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-H0.4K
FR-ABR-H0.75K
FR-ABR-H1.5K
FR-ABR-H2.2K
400V FR-ABR-H3.7K
FR-ABR-H5.5K
FR-ABR-H7.5K
FR-ABR-H11K
FR-ABR-H15K
NOTE
The brake resistor connected should only be the dedicated brake resistor.
Brake resistor cannot be used with the brake unit, etc.
Do not use the brake resistor (MRS type, MYS type) with a lead wire extended.
Do not connect a resistor directly to the terminals P/+ and N/-. This could cause a fire.
26
MC
Inverter
R/L1
S/L2
T/L3
T∗2
F
MC
ON OFF
OCR
Contact
MC
Thermal Relay Type
(Mitsubishi product)
TH-N20CXHZ-0.7A
TH-N20CXHZ-1.3A 110VAC 5A,
TH-N20CXHZ-2.1A 220VAC 2A(AC11 class)
TH-N20CXHZ-3.6A 110VDC 0.5A,
220VDC 0.25A(DC11class)
TH-N20CXHZ-5A
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
110VAC 5A,
TH-N20CXHZ-11A
220VAC 2A(AC11 class)
TH-N20CXHZ-0.24A
110VDC 0.5A,
TH-N20CXHZ-0.35A
220VDC 0.25A(DC11 class)
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
Thermal relay High-duty brake
(OCR) (∗1) resistor (FR-ABR)
P/+ R
PR
Contact Rating
Contact Rating
1/L 5/L
1 3
TH-N20
2/T 6/T
1 3
To a resistor
To the inverter
terminal P/+