Siemens SIRIUS Configuration Manual page 17

Load feeders with soft starters
Soft starters can also be used to prevent current peaks in the line supply instead of the
star(wye)-delta starting combinations. Three versions of these soft starters are available:
● 3RW30
● 3RW40
● 3RW44
The 3RW4 soft starters come as standard with an integrated solid-state overload relay. This
means that, in fuseless combinations, a motor starter protector is only required for short-
circuit protection. In the case of 3RW30 soft starters, the motor starter protector must also
cover the overload protection.
3RB22 / 23 overload relays and SIMOCODE pro
The modular, solid-state overload relays with external power supply type 3RB22 / 23 for
high-feature applications up to 630 A have been designed for inverse-time delayed
protection of loads with normal and heavy starting against excessive temperature rises due
to overload, phase unbalance or phase failure.
SIMOCODE pro is a flexible, modular motor management system for motors with constant
speeds in the low-voltage performance range. It provides the intelligent, communication-
capable interface between the higher-level automation system and the motor feeder.
A configuration with 3RB22 / 23 overload relays and with SIMOCODE pro requires in each
case a basic unit, a connection cable and a current measuring module. The MLFBs of the
current measuring modules are listed in the tables. Details of the basic units and connection
cables are given in the following:
3RB22 / 23
● Basic unit (= evaluation module)
– Monostable, screw: 3RB2283-4AA1
– Bistable, screw: 3RB2383-4AA1
– Monostable, spring-loaded: 3RB2283-4AC1
– Bistable, spring-loaded: 3RB2383-4AC1
● Connection cable
– 0.1 m (S00-S3): 3RB2987-2B
– 0.5 m (S00-S12): 3RB2987-2D
● For other accessories for 3RB22 / 23 overload relays see Catalog LV 1 Chapter 5.
Configuring SIRIUS Innovations
Configuration Manual, 04/2010, A8E56203880102-02
General information
17