Specifications
AS-Interface Slaves
Motor starters for operation in the field, high degree of protection
3RK1 3 ECOFAST motor starters and soft starters
6/130
Siemens IK PI · 2009
6
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Overview
Distributed motor starters are used for switching and protecting
loads locally. Variants with graded functional scope and with
different installation possibilities ensure that both the functional
requirements of the process and the constructional boundary
conditions of the machine or installation are taken into account.
Distributed motor starters are available for PROFIBUS DP and
AS-Interface.
The starters can be installed close to the motor or mounted on
the motor.
The following are available
• Single devices for geographically distributed motors and
• Isolated solutions (ET 200X) for operating mechanisms
installed close together.
The functionality in the ECOFAST system ranges from direct-
on-line starters, to reversing starters and soft starters through to
frequency converters.
Brake contacts are available as an option for the starters. Two
or four integrated digital inputs enable sensors to be scanned
locally.
All starters are equipped throughout with standardized inter-
faces for data and energy according to the ECOFAST specifica-
tion:
• HanBrid for PROFIBUS DP and insulation piercing method for
AS-Interface
• Han Q4/2 for the power supply
• Han 10 E for motor connection
The starters can be connected using T pieces for data and T
terminal connectors for power to prevent interruption.
The 3RK1 922-3BA00 hand-held device is also available
for local operation (see Catalog LV 1).
Detailed technical specifications of the ECOFAST motor starters
and soft starters can be found in the manual "ECOFAST Motor
Starters".
Technical specifications can be found in LV 1 T.
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Selection and ordering data
1)
The range from 0.3 ... 9 A is fixed and cannot be set or modified manually.
Fieldbus interface Switching function Motor protection Setting range/
performance range
Brake output Order No.
PROFIBUS DP
mechanical Thermistor 0.3 ... 9 A/4 kW
1
)No 3RK1 303-2AS54-1AA0
400 V AC
3RK1 303-2AS54-1AA3
Thermal
motor model
0.3 ... 3 A/1.1 kW No
3RK1 303-5BS44-3AA0
400 V AC
3RK1 303-5BS44-3AA3
2.4 ... 9 A/4 kW No
3RK1 303-5CS44-3AA0
400 V AC
3RK1 303-5CS44-3AA3
Electronic, soft Full motor protection 0.3 ... 3 A/1.1 kW No
3RK1 303-6BS74-3AA0
400 V AC
3RK1 303-6BS74-3AA3
2.4 ... 12 A/5.5 kW No
3RK1 303-6DS74-3AA0
400 V AC
3RK1 303-6DS74-3AA3
Electronic, soft,
multi-speed, R2SS
Full motor protection 0.6 ... 4 A/1.5 kW 400 V AC
3RK1 303-6ES84-3AA3
AS-Interface
mechanical Thermistor 0.3 ... 9 A/4 kW
1
)No 3RK1 323-2AS54-1AA0
400 V AC
3RK1 323-2AS54-1AA3
Thermal
motor model
0.3 ... 3 A/1.1 kW No
3RK1 323-5BS44-3AA0
400 V AC
3RK1 323-5BS44-3AA3
2.4 ... 9 A/4 kW No
3RK1 323-5CS44-3AA0
400 V AC
3RK1 323-5CS44-3AA3
Electronic, soft Full motor protection 0.3 ... 3 A/1.1 kW No
3RK1 323-6BS74-3AA0
400 V AC
3RK1 323-6BS74-3AA3
2.4 ... 12 A/5.5 kW No
3RK1 323-6DS74-3AA0
400 V AC
3RK1 323-6DS74-3AA3
Electronic, soft,
multi-speed, R2SS
Full motor protection 0.6 ... 4 A/1.5 kW 400 V AC
3RK1 323-6ES84-3AA3