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Bestell-Nr. / Order No. 2KG1900-4AA00-0AA0
Siemens
Deutsch / English / Français
04.2003
Precise adjustment of shaft and housing is imperative for
preventing any damage to the bearings, especially when
gearboxes in flange or foot design are rigidly mounted.
5 Electrical
connection
Work may only be carried out by
qualified specialists
on the
stationary motor
, while
disconnected
and
protected a-
gainst being switched on again
. This also applies for the
auxiliary power circuits (e.g. anti-condensation heaters).
Verify the safe isolation of the equipment from the supply!
The electrical connection with regard to frequency, voltage and
connection must comply with the specification on the rating
plate and the connection diagram in the terminal box. If the
tolerance limits
are exceeded that are specified in
EN 60034
,
part 1/IEC 34-1
(voltage
±
5 %, frequency
±
2 %, shape of
curve, symmetry), the heating effect is increased and the elec-
tromagnetic compatibility is affected.
Connections must be made in such a way that a
permanently
safe
electrical connection is maintained (no protruding wire
ends); use the corresponding cable end pieces. Create a
safe
earth
continuity connection
.
Tightening torques for terminal board connections
Thread M4
M5
M6
M8
Tightening torque [Nm] 0.8 ... 1.2 1.8
...
2.5 2.7
... 4
5.5 ... 8
Air clearances
between bare live parts themselves and between
bare live parts and earth must be
≥
5.5 mm (U
rated
≤
690 V).
It must be ensured that the terminal box does
not
contain any
foreign bodies
,
dirt
or
moisture
. Seal any unused cable entry
openings to protect against any
dust
and
water
.
Secure
the
key
for test operation without drive components if
applicable. For motors with brakes, check that the brakes are
operating perfectly before commissioning.
To change the direction of rotation of the motor, two of the
three phase conductors must be interchanged.
6 Operation
Vibration levels of v
rms
≤
3.5 mm/s (P
N
≤
15 kW)
or v
rms
≤
4.5 mm/s (P
N
> 15 kW) are quite acceptable.
If deviations from normal operation occur – e.g.
increased
temperatures, noises, vibration, leakage of oil,
the geared
motor should be
switched off in the event of any uncertain-
ties
. Determine the causes and contact the manufacturer, if
necessary. Do not disconnect protective equipment, even un-
der test operation.
In the case of
motors with separate fan
, the separately-
driven fan must be switched on throughout motor operation.
Interval
Part
Maintenance
Every 20 000 ope- Gearbox Oil change (under extreme operating con-
rating hours or
ditions, such as increased ambient tempe-
after 4 years
ratures or extreme temperature flutuations,
the oil change must be carried out sooner).
Every 3 000 Torque
Check for play in direction in which force
operating hours bracket
is applied.
In the case of dirty
Motor
Inspect the motor and clean cooling air
operation conditions,
channels. Open and close condensated
at least every
water holes from time to time.
10 000 operating hours
According to
Brake
Check brake of motors with fitted brake.
operating conditions,
If necessary, replace worn parts and adjust
at least every
the air gap.
3 000 operating hours
7 Brake
Adjustment
The brakes are set to torque M
B
on delivery.
Maintenance
The spring-loaded brakes hardly need any maintenance. How-
ever we recommend checking air gap "a" periodically ensure
safe brake release, as the friction of the brake lining (35) causes
the increase of the air gap. Adjust air gap "a" to the figures given
in the table below if necessary.
Motor size (SH) 63 71 80 90 100 112 132
M
B
[Nm ]
2 5 10 20 40 60 100
W
RN
[J ] x 10
7
5 5 12 20 35 60 125
a
normal
[mm ] 0,2 0,2 0,2 0,3 0,3 0,3 0,4
a
max.
[mm ] 0,7 0,7 0,8 0,8 0,9 1,0 1,1
b
min
[mm ] 4,5 4,5 5,5 7,5 9,5 11,5 12,5
t
1
[ms ] 35 35 45 60 80 120 160
t
2
≈
[ms ] 70 70 95 140 175 210 280
t
2
= [ms ] 30 30 45 60 75 90 120
SH
- Shaft height
M
B
-
Braking torque
W
RN
-
Friction until readjustment
a
normal
-
Air gap
a
max.
-
Max. readjustment
b
min
-
Min. lining thickness
t
1
-
Make time
t
2
≈
- Break time AC
t
2
=
-
Break time DC
Readjusting the air gap
First undo the three fixing screws (13) half turn. The sleeve
screws (26) can then be inserted into the magnet body (12) by
turning them anti-clockwise. By turning the three fixing screws
(13) clockwise, the magnet body (12) can be moved towards
the armature (25) until the nominal air gap (see table) is reached.
Now undo the three sleeve screws again by turning them
clock-wise out of the magnet body (12) and retighten the fixing
screws (13). Check that the air gap is symmetrical with a feeler
gauge and adjust if necessary.
Rectifier
Half-wave rectifier
Connections:
1, 2: Connection voltage (AC V~)
3, 4: Output voltage (DC V=)
5, 6: Connection for DC-side switching
