Mitsubishi Electric FR-E700EX Instruction Manual page 39

Connection of stand-alone option unit
It is recommended to configure a sequence, which shuts off power in the input side of the drive unit 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.)
<Example 1>
MC
R/L1
Power supply
S/L2
T/L3
F
MC
ON OFF
OCR
Contact
MC
 Refer to the table below for the type number of each capacity of thermal relay and the diagram below for the connection.
Power Supply
Brake Resistor
Voltage
MRS120W200
MRS120W100
MRS120W60
200V
MRS120W40
MYS220W50
(two units in parallel)
Power Supply High-duty
Voltage Brake Resistor
FR-ABR-0.4K
FR-ABR-0.75K
200V
FR-ABR-2.2K
FR-ABR-3.7K
NOTE
 The brake resistor connected should only be the dedicated brake resistor.
 Perform wiring and operation according to the Instruction Manual of each option unit.
 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 (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.
28
Thermal relay High-duty brake
Drive unit (OCR) (*) resistor (FR-ABR)
P/+ R
PR
Thermal Relay Type
(Mitsubishi Product)
TH-N20CXHZ-0.7A
TH-N20CXHZ-1.3A
TH-N20CXHZ-2.1A
TH-N20CXHZ-3.6A
TH-N20CXHZ-5A
Thermal Relay Type
(Mitsubishi Product)
TH-N20CXHZ-0.7A
TH-N20CXHZ-1.3A
TH-N20CXHZ-2.1A
TH-N20CXHZ-3.6A
<Example 2>
MC
R/L1
Power supply
S/L2
T/L3
F
B
MC
ON OFF
C
OCR
Contact
MC
Contact Rating
AC110V 5A,
AC220V 2A (AC11 class)
DC110V 0.5A,
DC220V 0.25A (DC11 class)
Contact Rating
AC110V 5A,
AC220V 2A (AC11 class)
DC110V 0.5A,
DC220V 0.25A (DC11 class)
Thermal relay High-duty brake
(OCR) (*) resistor (FR-ABR)
Drive unit
P/+
R
PR
1/L 5/L
1 3
TH-N20
2/T 6/T
1 3
To a resistor
To the drive unit
terminal P/+