SIEMENS
11/6
Siemens MD 50.1 · 2015
Motor options
Electrical design
Motor protection
11
■
Selection and ordering data
Protective devices
■
Anti-condensation heating
Anti-condensation heaters can be fitted to motors whose windings
are exposed to climatic conditions where there is a risk of conden-
sation, e.g. stationary motors in a damp environment or motors
subject to considerable temperature fluctuations. Anti-condensa-
tion heating must not be switched on during operation.
Instead of an anti-condensation heater, another possibility is to
connect a voltage that is approximately 4 to 10 % of the rated
motor voltage to stator terminals U1 and V1; 20 to 30 % of rated
motor current is sufficient to heat the motor.
Fig. 11/9
Connection circuit diagram for the anti-condensation heating
Technical specifications
Motor protection
Motor size
Order code
63
71
80
90
100
112
132
160
180
200
225
250
PTC thermistor disconnection
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
M10
PTC thermistor, warning and
disconnection
1)
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
M11
Winding thermostat, disconnection
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
M12
Winding thermostat, warning and
disconnection
1) 2)
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
M13
Temperature sensor
KTY 84-130
1)
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
M16
1x PT100 resistance thermometer
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
M19
1)
Not possible for worm geared motors S
2)
Not possible for inverter operation
Number of windings
Example
Function
Number of temperature-dependent
protective devices
Number of terminals
1
Motors with one
pole number
Disconnection
3
2
Warning and disconnection
6
3 (motor size 71 to 200)
4 (motor size 225 to 250)
Motor size
Heating power
W
63 … 80
1)
12.5
90 … 112
25
132 … 200
50
225 ... 250
92
1)
Only possible for worm geared motors S in motor size 71
G_D087_XX_00042
H1 = 1HE1
H2 = 1HE2
1HE2
N
-
L
1HE1
1HE2
1HE1
1HE1
1HE2
16
15
-M
PE
Order code:
115 V anti-condensation heating
M40
230 V anti-condensation heating
M41
© Siemens AG 2015