Siemens SIMOTICS M-1PH1, Equipment Manual, Page: 82 / 134

Electrical connection
6.4 System integration
1PH1 main motors
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Equipment Manual, 09/2021, A5E51077676A-AA
• For the incremental encoder cable:
3a1. Insert the male connector of the incremental encoder cable into the female connector
in the motor terminal box.
3a2. (Optional) You can select to fix the cable in the desired direction by screwing the hose
clamp at any two of the three screw holes. For detailed information about how to fix
the cable, see step 3a2 for connecting the absolute encoder cable mentioned above.
3b. Tighten the cable gland of the encoder cable onto the threaded hole.
4. Pass the power cable through the cable gland, and then through the second threaded
hole in the motor terminal box housing. Follow the steps below to connect the power
cable to the motor terminal box:
4a. Remove from the terminal box the three binding post nuts that correspond to the
power cable terminals U, V, and W. Place the three terminal lugs at the end of the
power cable conductors onto the corresponding binding posts. Fasten the cable con-
ductors with the nuts (3 x M5, max. 4.7 Nm). Remove the grounding screw for power
terminal PE. Place the terminal lug of the PE conductor on the grounding screw, and
then tighten the screw for the PE terminal (1PH110☐: 1 x M5, max. 4.7 Nm;
1PH113☐: 1 x M6, max. 4.7 Nm).
4b. Tighten the cable gland of the power cable onto the threaded hole.
5. For 1PH113☐ motors: pass your own fan cable (recommended cable outer diameter: 4
mm to 8 mm) through the cable gland, and then through the threaded hole in the fan
terminal box housing.
For 1PH110☐ motors: first pass your own fan cable (r ecommended cable outer diame-
ter: 4 mm to 8 mm) through the cable gland, next the fan cable hole, and then
through the lock nut within the fan terminal box housing.
Follow the steps below to connect the power cable to the motor terminal box:
5a. Loosen the four screws that correspond to the fan cable terminals U, V, W and PE. In-
sert the terminal lugs at the end of fan cable conductors into the corresponding sock-
ets under the binding posts, and then fasten the cable conductors with the screws.
5b. For 1PH1 13☐ motors, tighten the cable gland of the fan cable onto the threaded hole.
For 1PH110☐ motors, tighten the cable gland of the fan cable onto the threaded lock
nut within the fan terminal box.
6. Replace the covers of the terminal boxes, and then tighten the screws respectively for
the motor terminal box (4 x M5: max. 4.7 Nm) and the fan terminal box (4 x M4: max.
2.4 Nm).
NOTICE
Damage to the motor
• After you finish connecting the terminal boxes and start the motor, make sure the fan
rotates in the correct direction as indicated by the arrow marked on the fan rating plate;
otherwise, the motor may be damaged due to overheat.