11
12
13
14
15
16
17
18
19
20
445
16. (G) Control Parameters
16.8 Regenerative brake selection
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.
*1
The resistance should be 200
Ω
or more at 100% ED. The following shows the brake duty when the resistance is less than 200
Ω
.
Set parameters as follows:
•
Pr.30 Regenerative function selection
= "1"
• Set
Pr.70 Special regenerative brake duty
according to the amount and frequency of the regenerative driving, and make
sure that the resistor can consume the regenerative power properly.
• When the regenerative brake transistor is damaged, install a thermal relay to prevent overheat and burnout of the brake
resistor. (Refer to the Instruction Manual (Connection) to install a thermal relay.) Properly select a thermal relay according
to the regenerative driving frequency or the rated power or resistance of the brake resistor.
Parameters referred to
Pr.57 Restart coasting time
Pr.178 to Pr.189 (Input terminal function selection)
Pr.190 to Pr.196 (Output terminal function selection)
Voltage
class
Inverter
Minimum resistance
(
Ω
)
Power consumption
(kW)
200 V class
FR-E820-0030(0.4K)
100
1.5
FR-E820-0050(0.75K)
80
1.9
FR-E820-0080(1.5K)
60
2.5
FR-E820-0110(2.2K)
60
2.5
FR-E820-0175(3.7K)
40
3.8
FR-E820-0240(5.5K)
25
6.1
FR-E820-0330(7.5K)
20
7.6
FR-E820S-0030(0.4K)
100
1.5
FR-E820S-
0050(0.75K)
80
1.9
FR-E820S-0080(1.5K)
60
2.5
FR-E820S-0110(2.2K)
60
2.5
400 V class
FR-E840-0016(0.4K)
371
1.6
FR-E840-0026(0.75K)
236
2.4
FR-E840-0040(1.5K)
205
2.8
FR-E840-0060(2.2K)
180
3.2
FR-E840-0095(3.7K)
130
4.4
FR-E840-0120(5.5K)
94
6.1
FR-E840-0170(7.5K)
67
8.6
575 V class
FR-E860-0017(0.75K)
350
2.4
FR-E860-0027(1.5K)
300
2.8
FR-E860-0040(2.2K)
260
3.3
FR-E860-0061(3.7K)
190
4.5
FR-E860-0090(5.5K)
140
6.1
FR-E860-0120(7.5K)
100
8.5
60
30%ED
100% ED (at 200 Ω or more)
FR-E820(S)-0030(0.4K)
(100 Ω at minimum)
Minimum brake resistance (Ω)
Brake duty (% ED)
FR-E820(S)-0050(0.75K)
(80 Ω at minimum)
0
20
30
40
60
80
100
120
80
100
120
140
160
180
200
220
CAUTION
• If the resistor selection is incorrect, overcurrent may damage the inverter built-in brake transistor. Besides, the resistor
may be burned due to overheat.
• If the selection of the thermal relay is incorrect, the resistor may be burned due to overheat.
Summary of Contents for FR-E800
Page 17: ...16 1 Introduction 1 3 Related manuals MEMO ...
Page 51: ...50 2 Basic Operation 2 8 I O terminal function assignment MEMO ...
Page 89: ...88 3 Parameters 3 4 Parameter list by function group number MEMO ...
Page 135: ...134 5 Speed Control 5 9 Troubleshooting in the speed control MEMO ...
Page 153: ...152 6 Torque Control 6 7 Troubleshooting in torque control MEMO ...
Page 195: ...194 8 E Environment Setting Parameters 8 18 Current average value monitor signal MEMO ...
Page 237: ...236 10 D Operation Command and Frequency Command 10 6 Operation by multi speed setting MEMO ...
Page 339: ...338 13 T Multi Function Input Terminal Parameters 13 9 Start signal operation selection MEMO ...
Page 455: ...454 16 G Control Parameters 16 13 Speed smoothing control MEMO ...