Eaton DS7 User Manual

7 Connection examples
7.3 Size 3 and 4 (41 – 200 A)
DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com 141
7.3.8 Starting several motors sequentially with a soft starter
If you will be starting several motors one after the other with a single soft starter,
make sure to follow the changeover sequence below:
▶1. Start using soft starter
▶2. Switch on bypass contactor Qn2 via TOR
▶3. Disable soft starter
▶4. Switch soft starter output with Qn1 to the next motor
▶5. Restart
￫
When starting several motors with one soft starter the thermal
load of the soft starter (starting frequency, current load) must be
taken into account.
If the starts occur closely in succession, the soft starter must be
dimensioned larger (i.e. the soft starter must be designed with
an accordingly higher load cycle).
￫
Due to the thermal design of the DS7 soft starters, we
recommend the use of an (optional) fan when using a DS7
series device for starting several motors.

Eaton DS7 Specifications

General

Product type	-
Certification	IEC/EN 60947-4-2, UL 508, CSA22.2-14
Product color	Gray
Protection class	I
International Protection (IP) code	IP20
Input voltage	200 - 480 V
DC input voltage	24 V
AC input frequency (fridge)	50/60 Hz
Sustainability compliance	Yes
Sustainability certificates	CE
Operating temperature (T-T)	-40 - 40 °C

Weight and Dimensions

Weight	1800 g