Baelz Automatic BA 375-E42, Operating Instructions Manual

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W. Baelz & Sohn GmbH & Co.

 · Koepffstrasse 5 · 74076 Heilbronn · Germany · 

www.baelz.de             Seite | Page  

Motorized Rotary Actuator  

     baelz 375-E42

7.6  Errors

7.6.1  Errors after an initialization run

Following a successful initialization run, only the green LED is lit. 

If the red LED is flashing, this indicates an error following an unsuccessful initialization run. 

The first error to occur during initialization is shown. If the green LED is lit, the unit had already 

been initialized before the current initialization run. If the green LED is flashing, the unit had not 

been successfully initialized previously. 

The red LED shows errors occuring during initialization as follows:

Error code 1:   interval   interval   etc.

Error code 2:     interval     interval     etc. 

etc. up to ...

Error code 8:                interval                 interval                 

etc..

Following an initialization run, the red LED shows only initialization errors as long as DIP switch 

12 is set to 1. This enables a clear differentiation between errors occuring during initialization 

and those occuring during normal positioner operation. Setting DIP switch 12 from 1 back to 0 

permits the red LED to show any normal operational errors instead of initialization errors which 

may have occured.

Error code

Error

Corrective action

1 → 

1 x

Invalid status of initialization run. Possible 

cause: EMI (electromagnetic interference).

Remove source of interference.

2 → 

2 x

Sensor malfunction at analogue input AI1:

No signal from potentiometer.

Check connection terminals 91, 92, 93

(see wiring diagram, 

Fig. 10, page 20

).

Replace potentiometer if necessary.

3 → 

3 x

Potentiometer value at AI1 too small.

Possible cause: EMI.

Remove source of interference.

Replace potentiometer if necessary.

4 → 

4 x

Potentiometer value at AI1 too large.

Possible cause: EMI.

Remove source of interference.

Replace potentiometer if necessary.

5 →

 5 x

Wrong direction of travel

Check motor (97, 98, 99) and potentiometer 

(91, 92, 93) connections (see wiring diagram, 

Fig. 10, page 20

).

Remove source of interference.

6 →

 6 x

Obstruction: potentiometer or motor not moving. 

Check connections, set N↔S switch to "N", 

remove any obstructions.

7 →

 7 x

Actuator turns too far.

Set a smaller angle of rotation for the 

actuator (< 110°).

8 →

 8 x

Actuator doesn't turn far enough.

Set a larger angle of rotation for the actuator 

(> 25°).