Rexroth IndraDrive Specifications for the Components of the Drive System 5-9
DOK-INDRV*-SYSTEM*****-PR02-EN-P
5.5 Limited Length of Motor Power Cables
The restrictions contained in the table below apply to the components
HCS, HMS, HMD.
To avoid overload of the drive controller the motor cable length is limited
depending on the switching frequency.
The lengths indicated in the table below are recommended as guide
values (at an ambient temperature of ≤ 40 °C in accordance with
EN 60 204).
Allowed line lengths for motor connection without filter measures at
motor output:
Max. allowed line length [m]PWM frequency [kHz]
Shielded line Unshielded line 1)
4 75 150
8 38 150
12 25 not allowed
16 18 not allowed
1) only allowed at HCS drive controllers
Fig. 5-13: Line lengths
Operation with unshielded motor cables of up to 150 m
• aims at applications with "operation without encoder"
• does not include the control voltage lines to the motor
• requires additional measures with regard to EMC on the part of the
operating company
Allowed line lengths for motor connection with filter measures at motor
output:
Max. allowed line length [m]PWM frequency [kHz]
Shielded line Unshielded line
1)
4
2)
75 200
1) only allowed at HCS03 drive controllers
2) higher PWM frequencies are not allowed
Fig. 5-14: Line lengths
Data of Motor Power Cable
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