Emc And Leakage Currents - Mitsubishi Electric FR-D720-0.2K-G Instruction Manual

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
0.2K.)
<Example 1>
MC
Power
supply
T∗2
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.

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
200V
FR-ABR-2.2K
FR-ABR-3.7K
FR-ABR-H0.4K
FR-ABR-H0.75K
FR-ABR-H1.5K
400V
FR-ABR-H2.2K
FR-ABR-H3.7K
NOTE
 The brake resistor connected should only be the dedicated brake resistor.
 Brake resistor cannot 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 terminals P/+ and N/-. This could cause a fire.
Parameters referred to
Pr. 30 Regenerative function selection
28
Drive unit
Thermal relay High-duty brake
(OCR)(∗1) resistor (FR-ABR)
R/L1 P/+ R
S/L2
T/L3 PR
Thermal Relay Type
(Mitsubishi Electric
product)
TH-T25-0.7A
TH-T25-1.3A
TH-T25-2.1A
TH-T25-3.6A
TH-T25-5A
Thermal Relay Type
(Mitsubishi Electric
product)
TH-T25-0.7A
TH-T25-1.3A
TH-T25-2.1A
TH-T25-3.6A
TH-T25-0.24A
TH-T25-0.35A
TH-T25-0.9A
TH-T25-1.3A
TH-T25-2.1A
Refer to page 114.
Drive unit
<Example 2>
MC
R/L1
Power
S/L2
supply
T/L3
T∗2
F
B
MC
ON OFF
C
OCR
Contact
MC
Rated Operating Current
120VAC: 2A (NO contact) /
3A (NC contact),
240VAC: 1A (NO contact) /
2A (NC contact) (AC15 class)
110VDC: 0.2A,
220VDC: 0.1A (DC13 class)
Rated Operating Current
120VAC: 2A (NO contact) /
3A (NC contact),
240VAC: 1A (NO contact) /
2A (NC contact) (AC15 class)
110VDC: 0.2A,
220VDC: 0.1A (DC13 class)
Thermal relay High-duty brake
(OCR)(∗1) resistor (FR-ABR)
P/+
R
PR
1/L 5/L
1 3
2/T 6/T
1
To the drive unit To a resistor
terminal P/+
3