8 Trouble-shooting
28 of 44
EA-C
8 Trouble-shooting
WARNING
Improper work to remedy faults
Risk of injury!
▷
For any work performed to remedy faults, observe the relevant information
given in this operating manual and/or in the product literature provided by the
accessories manufacturer.
If problems occur that are not described in the following table, consultation with the
KSB customer service is required.
Faults are indicated by a green and a red LED inside the terminal box. For this
purpose, the terminal box cover or the actuator cover must be dismantled,
depending on the design. (
ð
Section 5.4, Page 16)
A
The red LED lights up continuously.
B
The red LED flashes rapidly.
C
The red LED flashes slowly.
D
Red LED not lit.
E
The green LED lights up continuously.
F
The green LED flashes rapidly.
G
The green LED flashes slowly.
H
Green LED not lit.
Table 7:
Trouble-shooting for statuses
A B C D E F G H Status
Possible cause
Remedy
- - -
✘
- - -
✘
Actuator does not respond;
both status LEDs are off.
No power supply
Check mains connection.
Voltage supplied does not
match the supply voltage
indicated on the name plate.
Apply correct supply voltage.
- - -
✘ ✘
- - - Actuator does not cover the
full valve travel.
Initialisation has not been
performed correctly.
Repeat initialisation
procedure.
Insufficient stroke has been
set for stroke-dependent limit
position.
Check valve travel parameter
settings.
- - -
✘ ✘
- - - Actuator does not provide
correct valve shut-off.
Initialisation has not been
performed correctly.
Repeat initialisation
procedure.
Actuator's closing force /
closing torque is insufficient.
Verify actuator selection.
- - -
✘ ✘
- - - Actuator is in normal
operating mode but does not
respond to setpoint
modifications.
Actuator has been configured
as process controller.
Connect the process sensor.
- - -
✘ ✘
- - - Actuator position does not
match the setpoint supplied.
A non-linear characteristic has
been parameterised.
Check parameters of
characteristic.
Table 8:
Trouble-shooting for operating modes
A B C D E F G H Operating modes
Possible cause
Remedy
- - -
✘ ✘
- - - Normal operating mode
-
-
- - -
✘
-
✘
- - Actuator is in initialisation
mode.
-
Initialisation mode is exited
automatically upon
completion.
- - -
✘
- -
✘
- Actuator has not been
initialised.
-
Run automatic initialisation.
Summary of Contents for EA-C
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