Siemens 3RK1308‑0 00‑0CP0 Series Equipment Manual page 53

Number of motor starters
28
29
30
Figure 5-4 Peak current in the electric torque
Connecting and operating motor brakes
ET 200SP motor starters can be operated for the following braking applications:
● Variant 1: High Feature DOL starter or reversing starter and F DOL starter or F reversing
starter with 400 V brake
● Variant 2: High Feature DOL starter or reversing starter with 230 V brake
● Variant 3: High Feature DOL starter or reversing starter and F DOL starter or F reversing
starter with 230 V brake without connection to the neutral conductor
Variant 1. High Feature DOL starter or reversing starter and F DOL starter or F reversing
starter with 400 V brake
The current for the braking device is drawn from two phases. Connection is via T1 and T3.
The connection of the motor brake leads to phase asymmetry at the motor connection. This
is detected by the motor starter, which responds based on its parameter settings and the
magnitude of the asymmetry.
Asymmetry limit:
The asymmetry limit is a percentage value by which the motor current is allowed to deviate
in each phase. Asymmetry is detected as soon as one of the three phases deviates by more
than 40 % from the mean value of all phases.
Motor starter (3RK1308‑0**00‑0CP0)
Equipment Manual, 11/2019, A5E34821005002A/RS-AC/003
Current in A Time in ms (until 8 A rated current is reached)
183 5.00
184 6.90
186 9.00
Product features
5.8 Operating motor starters
53