Messages and diagnosis
8.10 Self-test (user-test)
SIRIUS 3RW50 soft starter
Manual, 09/2019, A5E35628455002A/RS-AA/001
179
8.10
Self-test (user-test)
Requirements
●
The 3RW5 soft starter is in a fault-free condition.
●
Perform the test with the motor switched off.
Activation options
●
Using the RESET / TEST key on the 3RW5 soft starter
●
3RW5 HMI High Feature
Menu: "Diagnosis > Soft Starter > Self-test"
Access protection to 3RW5 HMI High Feature is not active or has been reset.
Here the self test (user test) is run through completely.
Procedure - Activation with the RESET / TEST key
Depending on how long the RESET / TEST keys are held pressed, the following tests are
performed in the specified sequence. Thus, if the key is held pressed for longer than 8 s, all
4 tests are performed. If you press and hold the key for only 3 s, for example, the first 2 tests
are conducted.
Operating time
Explanation
0.15 ... 2 s
LED test
All 7 LEDs are activated.
2 ... 5 s
Visual display of the position of the rotary coding switch
16 different positions are available for the rotary coding switch for setting the rated
operational current I
e
of the motor.
The table "Visual display of the position of the rotary coding switch" displays the
exact position of the rotary coding switch based on a combination of 5 LEDs.
For more information, see Chapter Setting elements on 3RW50 soft starter
(Page 91).
5 ... 8 s
Current detection test
The current detection is tested in all 3 phases.
In the case of 3RW5 soft starters with thermistor motor protection, the thermistor
evaluation unit is also tested.
> 8 s
Motor overload protection test
The entire control circuit is tested, including the contact blocks and the error
signaling output.
If the device responds as intended, tripping on overload occurs. This can be reset
immediately without a cooling time by pressing the TEST / RESET key again.