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Operation
6.
Operation
6.1
Status LED
Illust. 6: Status LED
(1)
Status LED
The status LED is located under the casing cover
and displays the operating status of the actuator.
Status-LED
Bedeutung
Flashing red
Charging of the capacitors after
switching on
Flashing green
Initialisation run, recognition of neut-
ral point active
Lit green
Operating voltage applied, normal
operation
Off
Emergency control mode triggered,
no operating voltage
6.2
Normal operation
The actuator is automatically controlled via the con-
trol technology.
6.3
Emergency control function
Z If the operating voltage fails, the actuator will move
to the set emergency end position.
Z Once the operating voltage has been restored, the
energy store will be charged first.
Z After that, the actuator will follow the signals of the
control technology.
The emergency control function will only be
available after successful completion of the
initialisation run (displayed by a constantly lit
green LED ).
10
1
7.
Maintenance
The actuator is maintenance-free.
8.
Removal and reinstallation
8.1
Removal
Illust. 7: Stroke position indicator
(1)
Stroke position indicator of the actuator
CAUTION
Risk of burns due to hot components
An unprotected contact with hot components
may lead to burns.
f Allow the valve to cool down before work-
ing on it.
NOTICE
It may not be possible to unscrew the
collar nut by hand
Without operating voltage, the actuator may
close the valve with the maximum actuating
power of 200 N. In this case, the collar nut
can no longer be unscrewed by hand.
f Do not use pliers or similar to loosen the
collar nut!
1. Set the DIP switch 6 to "ON" (see section 5.2 on
page 9).
2. Disconnect the actuator from the power supply.
Z The actuator will move to the upper stroke position.
3. Disconnect all electrical connections.
4. Loosen the collar nut.
5. Remove the actuator from the valve.
"Aktor M ST L 24V"
1
101271784-V02.01.2020
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