Motor Description
1.7 Electrical connections
1PH7/1-27
Siemens AG, 2004. All rights reserved
Induction Motors, 1PH7 (APH7S) – 05.04 Edition
In order to minimize the motor noise at standstill, the fan can be shut down at
n < n
min
and when the controller enable has been withdrawn.
Recommended connection
The fan is connected through the terminal box. The fan should be operated
through motor protection circuit-breakers.
L1 PE
U1 V1 W1
L3L2
NE
SIMODRIVE
Additional fans
M
I >
Fans
The motor protection
circuit-breaker is not
included in the motor
scope
Fig. 1-4 Recommended connection
Example of a fan control
PLC
In
act
I<n
min
Enable controller
K1
3-ph. 400 V AC, 50 Hz
M
3 ~
K1
I >
(dependent on
the application)
Fan motor
Tolerances
refer to Table 1-10
3-ph. 400 V AC, 60 Hz
3-ph. 480 V AC, 60 Hz
Fig. 1-5 Example, fan control
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