Event
Description
Possible cause
Troubleshooting
End position can no longer be
reached (after replacing the
diaphragm).
Device Temperature Over-Run
0x4210
The event occurs as a warning
or error if the motor temperat-
ure is too high.
Control is operated outside of
the specification.
Check temperature
Set control correctly (check
duty cycle (ED) of the actuator)
The ambient temperature is
too high.
Emergency Power
0x5100
The event occurs if the supply
is too low. The event is
triggered as a warning if the
supply voltage Uv is below a
value of 21.1 V. (If the supply
voltage is below 17.4 V, the
event Primary Supply Voltage
Under-Run (0x5111) is
triggered as an error).
Power supply unit overloaded. Check supply
Cross-section of the supply
line is too small.
Supply line is too long.
Primary Supply Voltage Under-
Run
0x5111
The event occurs if the supply
voltage is too low.
Power supply unit overloaded. Check supply
Cross-section of the supply
line is too small.
Supply line is too long.
Potifail Close
0x8CA5
The event occurs if a valve po-
sition is read which can never
be achieved in the "Close" dir-
ection.
Fault in valve position detec-
tion.
Check valve/diaphragm
Error when replacing a dia-
phragm (stroke of the valve in
incorrect area).
Actuator has been fitted on the
valve incorrectly (stroke of the
valve in the incorrect area).
Potifail Open
0x8CA4
The event occurs if a valve po-
sition is read which can never
be achieved in the "Open" dir-
ection.
Fault in valve position detec-
tion.
Check valve/diaphragm
Error when replacing a dia-
phragm (stroke of the valve in
incorrect area).
Actuator has been fitted on the
valve incorrectly (stroke of the
valve in the incorrect area).
GEMÜ 639 eSyStep
Positioner (Code S0)
www.gemu-group.com
61 / 72
12 Specific data IO-Link (pin 6)
