Electrical Connection And Commissioning; Operation; Maintenance And Servicing - ABB DC Machines DMI Operating And Maintenance Instructions Manual

5
Electrical
connection and
commissioning
6

Operation

7
Maintenance
and servicing
Safety instructions
All operations must only be carried out by
skilled technical personnel on machines at rest
and isolated and provided with a safeguard to
prevent unintentional reconnection. This applies
also to auxiliary circuits (e.g. anti-condensation
heating). Remove shipping brace before
commissioning.
Check safe isolation from supply!
Exceeding tolerances according to EN 60034
(VDE 0530), i.e. voltage ± 5%, or an unfavour-
able form factor resulting from the type of
converter used, leads to increased heating and
shortens the life of the machine. Pay attention
to rating plate markings as well as to the
connection diagram.
The connection must be so made that a
permanent and safe electrical connection is
ensured (no loose wire ends). Use correct cable
terminals.
Maintain clearances between live, uninsulated
parts and between such parts and earth.
Operation without excitation can lead to
dangerous overspeeds and must be prevented
by interlocking.
≤ 4.5 mm/s at the
Vibration severities V
rms
bearings are acceptable in the coupled state.
In the event of of deviations from normal opera-
tion – e.g. elevated temperatures, noise, vibra-
tions – switch off the machine in case of doubt.
Establish the cause. Consult ABB, if necessary.
Do not override protective devices even in trial
runs.
The ABB documentation must be followed.
There must be no foreign objects, dirt or
moisture in the terminal box. Close unused
cable entrance holes and the box itself in a
dust- and watertight manner.
For the trial run without output elements, fix the
key to the shaft.
For the connection and installation of acces-
sories (e.g. tacho-generators, pulse generators,
brakes, temperature sensors, air-flow monitors,
brush monitors), strictly follow the correspond-
ing instructions. In case of doubt, consult ABB.
For machines with brakes, check satisfactory
functioning of the brake before commissioning.
Before commissioning, measure the insulation
resistance. With 500 V applied, the insulation
resistance value measured should not be lower
than 1 MΩ. For corrective measures, see the
chapter "Insulation resistance".
For all inspection and maintenance operations,
see the chapter "Observation and mainte-
nance".
In case of heavy dirt deposits, periodically clean
air channels. Open condensate drain holes from
time to time .
Regrease bearing assembly with a relubricating
device while the machine is running. See the
chapter "Lubrication".