LOW VOLTAGE MOTORS - Installation, operation, maintenance and safety manual - rev. 01 - 1.07.2016
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The voltage and connection are stamped on the terminal box cover.
Direct-on-line starting (DOL):
Y or D winding connections may be used.
For example, 690 VY, 400 VD indicates Y-connection for 690 V and D-connection for 400 V.
WARNING!
from 10KW Start/Delta (Y/D) starting is recommended Star/Delta starting (Y/D):
The supply voltage must be equal to the rated voltage of the motor when using a D-connection.
Remove all connection links from the terminal block.
3.7.2 Connections of auxiliaries
If a motor is equipped with thermistors or other RTDs (Pt100, thermal relays, etc.) and auxiliary devices, it is recommended they be used and connected by
appropriate means.
Maximum measuring voltage for the thermistors is 2.5 V. Maximum measuring current for Pt100 is 5 mA. Using a higher measuring voltage or current may cause
errors in readings or damage the system.
3.8 Terminals and direction of rotation
The shaft rotates clockwise when viewing the shaft face at the motor drive end, and the line phase sequence L1, L2, L3 is connected to the terminals as shown
in Figure 1.
To alter the direction of rotation, interchange any two connections on the supply cables.
If the motor has a unidirectional fan, ensure that it rotates in the same direction as the arrow marked on the motor.
4. OPERATION
4.1 Use
The motors are designed for the following conditions unless otherwise stated on the rating plate.
- Normal ambient temperature limits are -20°C to +40°C.
- Maximum altitude 1000 m above sea level.
- Tolerance for supply voltage is ±5% and for frequency ±2% according to EN / IEC 60034-1 (2004).
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