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Commissioning, operation and maintenance
13.11.2
Measures
13.11.3
Coolant supply
13.12
Electrical check of motor components
Resistance and inductance
Bosch Rexroth AG R911298798_Edition 08
DANGER
⇒ Do not carry out any maintenance work while the machine is running
⇒ Secure the machine against start-up and unauthorized operation during
maintenance work
⇒ Do not work on hot surfaces
Bosch Rexroth recommends the following maintenance measures based on
the machine manufacturer's maintenance plan:
Measure
Check the cooling system for proper
functioning.
Check the mechanical and electrical con‐
nections.
Check the machine for smooth running,
vibrations and bearing noise.
Remove dust, chips and other dirt from
the motor housing, cooling fins and the
connections.
Tab. 13-6:
Maintenance measures
It can be necessary to disassemble the coolant supply for maintenance
measures or troubleshooting.
●
This work may only be carried out by skilled personnel.
●
Do not carry out any maintenance measures while the machine is run‐
ning. Observe the safety instructions.
●
Protect open supply lines and connections against ingress of dirt.
Electrical defects at stators are can be indicated in advance by measuring the
electrical characteristics. The following variables are relevant:
●
Resistance between motor connecting wires 1-2, 2-3 and 1-3
●
Inductance between motor connecting wires 1-2, 2-3 and 1-3
●
Insulation resistance between motor connecting wired and guides
The measured values of resistance and inductance can be compared to the
values specified in chapter 4 "Technical data". The individual values of resist‐
ance and inductance measured between the connections 1-2, 2-3 and 1-3
should be identical within a certain tolerance. If one or several values deviate
MBT High Synchronous Torque Motors
Risk of injury due to moving elements! Risk of
injury due to hot surfaces!
Interval
According to the specifications in the ma‐
chine maintenance plan, but at least ev‐
ery 1000 operating hours.
According to the specifications in the ma‐
chine maintenance plan, but at least ev‐
ery 1000 operating hours.
According to the specifications in the ma‐
chine maintenance plan, but at least ev‐
ery 1000 operating hours.
Depending on the degree of soiling, but
after one operating year at the latest.
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