Elettronica Santerno SINUS/ISD 200 S-0.75, User Manual, Page: 182 / 206

15P0082B8
USER MANUAL
SINUS/ISD
13 - 2/2
13.3 13.3 USING MULTIPLE MOTORS ON A SINGLE INVERTER USING MULTIPLE MOTORS ON A SINGLE INVERTER
A single large Inverter can be used to supply several smaller motors provided that each individual motor has
overload protection.
Note: Conventional V/F control strategy must be enabled for use with
parallel motors. (Sensorless vector control strategy cannot be
used). See the VECTOR ENABLE parameter under VECTOR
SET-UP menu at level 2.
The Inverter must be rated to supply the total motor current total motor current. It is not
sufficient to simply sum the power ratings of the motors, since the
Inverter has also to supply the magnetising current for each motor.
Note that the overload device will not prevent the motor overheating
due to inadequate cooling at low speed. Force vented motors may be
required; consult your motor supplier.
WARNING!
All motors should be connected to the All motors should be connected to the
Inverter output before the Inverter output before the
START START
command is given. command is given.
Caution
Restrict the total cable length on multiple motor installations as follows:
50 metres with no output choke fitted,
300 metres with choke as recommended in Table 3-3 and 3-4.
M1 M2
SINUS/ISD
OL1 OL2
M1/U M2/V M3/W
Figure 13- Figure 13-1 1 Single Inverter supplying Single Inverter supplying
multiple Motors multiple Motors