Unshielded motor cables
Operation with unshielded motor cable
●
aims at applications with "sensorless operation" (open-loop
operation)
●
does not include the control voltage lines to the motor; brake
supply and evaluation of the temperature sensors in the mo‐
tor might possibly require further measures
●
requires additional measures with regard to EMC on the part
of the operating company
For lines connected in parallel, half the indicated lengths apply.
Voltage Drop on Connection to Motor Holding Brake
The motor holding brake is controlled via the drive controller. For this pur‐
pose, the 24V supply is connected to the output at the connection point X6.
To operate the motor holding brake reliably, observe its requirements on
power supply.
For operating the integrated motor holding brakes of the Rexroth IndraDyn
motor line at Rexroth IndraDrive controllers with Rexroth connection cables,
the data of 24V supply are considered as guide values.
For the data of 24V supply, see Project Planning Manual "Rexroth
IndraDrive Supply Units and Power Sections" → Chapter of the respective de‐
vice → "Technical Data" → "Basic Data" → "Data for Control Voltage Supply".
Mechanical Requirements
Depending on the application, there are different requirements.
See the technical data of the cables in the documentation "Rexroth Con‐
nection Cables" for whether the properties comply with the requirements.
Third-Party Power Cables
Requirements on third-party motor power cables:
Maximum allowed cable length at A1, A2, A3:
●
See chapter
8.7 Connection Cables to Motor, page 137
Maximum allowed capacitance per unit length at A1, A2, A3:
●
Against ground, each: 0.5 nF/m
●
Against each other: 0.5 nF/m
Maximum allowed inductance per unit length at A1, A2, A3:
●
100 nH/m each
If you use third-party motor cables not corresponding to the re‐
quirements, Rexroth's guarantee for the drive system will expire.
Use ready-made cables by Rexroth.
To select the cables, use the documentation "Rexroth Connection Ca‐
bles".
DOK-INDRV*-SYSTEM*****-PR06-EN-P
Rexroth IndraDrive Drive Systems with HMV01/02 HMS01/02, HMD01, HCS02/03
Bosch Rexroth AG
139/309
Configuring the Drive System
