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FI002K0018v1530hUK – THS/21 Instruction manual for installation, use and maintenance
INSTALLATION
64 ORIGINAL
INSTRUCTION
3.1.3.5 Conveyor belt motors
It is recommended, where applicable, to use
AC motors
rather than DC motors.
- The motors must be installed at a distance
D
from the Probe
aperture, as indicated in the following table:
Minimum distance advisable between the Probe and AC motors (without
motor screening)
Power
All models
THS/MN21
0.5 HP
3 DH
5 DH
1 HP
4 DH
6 DH
Motors
C: non-insulated support;
I: insulated support;
S: screening
- Insulate the metal frame of the motor from the conveyor belt structure, in order to avoid
potentially critical ground loops; connect the motor to the ground only through the Inverter PE
terminal.
- Use, for the motor, 3 GND shielded cables, connecting the shield to earth only to the
Inverter PE terminal.
- In case of motors driven by an inverter, if absent, equip the inverter with the EMI filter
recommended by the Manufacturer and connect to the motor as indicated in the picture below.
Install the filter holding the filter input and output cables well separated.
I: Inverter; E: EMI Filter; B: Metallic container; M: Motor; C: Cable; S: Shield; G: Ground.
- Install a ferrite toroidal core on the three motor phase cables, making one or two windings inside
it.