Hiwin D1 - Overvoltage Protection

D1 Servo Drive User Manual Protection Function
HIWIN MIKROSYSTEM CORP. 8-11
MD20UE01-2109
8.6 Overvoltage protection
When motor decelerates, it generates energy. The energy returns to the capacitors of the servo drive.
When the returned energy exceeds the capacity of the capacitors, regenerative resistor must be installed
to protect the servo drive by absorbing the returned energy. For D1 servo drive, the voltage threshold for
activating regenerative resistor is 390 Vdc; the voltage threshold for deactivating regenerative resistor is
380 Vdc. Regenerative resistors used in HIWIN standard products are listed in table 8.6.1. Connect them
parallelly or serially based on your need.
Table8.6.1
Regenerative Resistor Model
HIWIN Part Number
Resistance
Rated Power/Peak Power
RG1
050100700001
68 Ω
100 W / 500 W
RG2
050100700009
120 Ω
300 W / 1500 W
RG3
050100700008
50 Ω
150 W / 750 W
RG4
050100700019
50 Ω
600 W / 3000 W
Table8.6.2
Regenerative Resistor Model
L1
L2
W
W1
H
RG1
165 ± 2 mm
150 ± 2 mm
40 ± 0.5 mm
5.3 ± 0.5 mm
20 ± 0.5 mm
RG2
215 ± 2 mm
200 ± 2 mm
60 ± 1 mm
5.3 ± 1 mm
30 ± 1 mm
RG3
190 ± 2 mm
175 ± 2 mm
40 ± 1 mm
5.2 ± 1 mm
20 ± 1 mm
RG4
390 ± 2 mm
360 ± 2 mm
60 ± 1 mm
9 ± 1 mm
28 ± 1mm
Figure8.6.1
Cable length (L): 500 mm