Mitsubishi Electric FR-A800 Series Instruction Manual page 100

• Pr.70 Special regenerative brake duty = 10% (for 7.5K or lower) or 6% (for 11K or higher)
(Refer to page
• When the regenerative brake transistor is damaged, the following sequence is recommended to prevent overheat and
burnout of the brake resistor.
<Example 1>
Power
Supply
T
F
MC
OFF ON
MC
*1 Since the FR-A820-00630(11K) or higher and FR-A840-00310(11K) or higher are not provided with terminal PX, a jumper need not to be
removed.
*2 Refer to the following table for the thermal relay models for each capacity. Refer to the following diagram for the connection. (Always install a
thermal relay when using a brake resistor for the inverters with 11K or higher capacity.)
Power
High-duty brake
supply
voltage
FR-ABR-0.4K
FR-ABR-0.75K
FR-ABR-2.2K
FR-ABR-3.7K
200 V FR-ABR-5.5K
FR-ABR-7.5K
FR-ABR-11K
FR-ABR-15K
FR-ABR-22K
FR-ABR-H0.4K
FR-ABR-H0.75K
FR-ABR-H1.5K
FR-ABR-H2.2K
FR-ABR-H3.7K
400 V
FR-ABR-H5.5K
FR-ABR-H7.5K
FR-ABR-H11K
FR-ABR-H15K
FR-ABR-H22K
 Connection of a brake resistor other than the FR-ABR
A brake resistor can be used with the FR-A820-01250(22K) or lower and the FR-A840-01800(55K) or lower.
Use a brake resistor that has resistance and power consumption values higher than the following. Also, the brake resistor must
have a sufficient capacity to consume the regenerative power.
Voltage class
200 V class
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724.)
Thermal
relay
(OCR)(∗2)
MC Inverter
R/L1 P/+
(P3)
S/L2
T/L3
PX
PR
Disconnect jumper. (∗1)
OCR
Contact
Thermal relay model
(Mitsubishi electric
resistor
product)
TH-T25-0.7A
TH-T25-1.3A
TH-T25-2.1A
TH-T25-3.6A
TH-T25-5A
TH-T25-6.6A
TH-T25-11A
TH-T25-11A
TH-T65-22A
TH-T25-0.24A
TH-T25-0.35A
TH-T25-0.9A
TH-T25-1.3A
TH-T25-2.1A
TH-T25-2.5A
TH-T25-3.6A
TH-T25-6.6A
TH-T25-6.6A
TH-T25-9A
Inverter
FR-A820-00046(0.4K) 100
FR-A820-00077(0.75K) 80
FR-A820-00105(1.5K) 50
FR-A820-00167(2.2K) 33
FR-A820-00250(3.7K) 30
FR-A820-00340(5.5K) 18
FR-A820-00490(7.5K) 18
FR-A820-00630(11K) 12
FR-A820-00770(15K) 8.5
FR-A820-00930(18.5K) 6.5
FR-A820-01250(22K) 6.5
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<Example 2>
FR-ABR
R
Power
Supply
F
OFF ON
MC
Rated operating current
120 VAC: 2 A (NO contact) / 3 A (NC contact),
240 VAC: 1 A (NO contact) / 2 A (NC contact)
(AC15 class)
110 VDC: 0.2 A, 220 VDC: 0.1 A (DC13 class)
Minimum resistance (Ω)
Thermal
relay
MC Inverter
(OCR)(∗2)
R/L1 P/+
(P3)
S/L2
T/L3
PX
T
PR
B
Disconnect jumper. (∗1)
MC
C
OCR
Contact
1/L
2/T
To the inverter
P/+ terminal
Power consumption (kW)
1.44
1.81
2.89
4.38
4.81
8.02
8.02
12.0
17.0
22.2
22.2
2. INSTALLATION AND WIRING
2.10 Connection of stand-alone option units
1
2
FR-ABR
3
R
4
5
6
7
5/L
1 3
8
6/T
1 3
To the FR-ABR
9
10
99