●
If the specified holding torque (M4) is not attained after several grind‐
ing-in processes, the holding brake is not operable. Please consult
Rexroth Service.
During operation
A missing holding torque of holding brakes caused by tear and corrosion can
lead to operational disturbances in machines and plants. For this case,
IndraDrive control devices offer the advantage to control the efficiency of the
holding brake at regular intervals. This brake test can be carried out e.g. in the
framework of a preventive maintenance (see P-0-0541, C2100 Command hold‐
ing system check).
In order to counteract to an unsufficient holding torque, there is also the pos‐
sibility to grind in the holding brakes:
1.
Realisation of the grinding-in routine IndraDrive "Reconstition of the hold‐
ing torque" (see P-0-0544, C3900 Command grind in motor holding
brake). A repeated realisation of the grinding-in routine is possible.
2.
Grinding-in routine due to superior control. Here, special control programs
adapted to the machine and system concepts are required. If necessary,
please contact your Bosch Rexroth distribution partner and discuss the
grinding-in parameters for your application.
9.12
Acceptances and Authorizations
9.12.1
Motors in EU Version
Declaration of conformity
Certificate of conformity certifying the structure of and the compliance with the
applicable EN standards are available for all MKE motors. If necessary, these
certificates of conformity can be requested from the responsible sales office.
The CE symbol and Ex mark can be seen on the type plates of the MKE Motors.
CE symbol
Fig.9-23:
CE symbol
Ex mark
II 2G/D EEx d IIB T4
IP6X T 135°C
Fig.9-24:
Ex mark
9.12.2
Motors in UL Version
UL, CSA Listing
The MKE motors listed below have been presented to the UL authorities "Un‐
derwriters Laboratories Inc.®".
●
MKE037B
●
MKE047B
●
MKE098B
●
MKE118
The motors are approved by the UL authority and are marked with the following
symbol
on the motor's name plate.
Project Planning Manual | Rexroth MKE Synchronous Motors
Electric Drives
and Controls
| Bosch Rexroth AG
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Operating Conditions and Application Notes
