7.
Fail safe operation and standard operation
Trigger signal for fail safe operation
A fail safe operation is triggered if the
ESD
(Emergency Shut Down) input is open
(0 V DC).
Switching behaviour of
ESD
input:
●
ESD
input = Low level (0 V DC or input open)
= fail safe operation is being executed
●
ESD
input = High level (+24 V DC)
= the valve can be operated in standard mode via actuator
Depending on the configuration, the fail safe operation can be initiated by power loss
at actuator controls. The factory configuration of the fail safe unit is configured at
assembly and is specified in the order-related technical data sheet.
Operating time configuration for fail safe operation
The operating time is preset in the factory. In order to modify the operating time, 4
different operating speeds can be selected via
FS speed configuration
(refer to wiring diagram) (level 1 – level 4).
We recommend contacting the AUMA Service prior to modifying the operating
time for a safe fail operation.
After a fail safe operation
Turning handwheel at actuator following a fail safe operation!
Risk of hand injury for handwheels equipped with ball handle.
→
Do NOT press the push button at actuator handwheel.
→
Following a fail safe operation, manual operation may only be re-engaged after
successful initialisation (
FQM FS ready
signal).
28
FQM 05.1 – FQM 12.1 / FQMEx 05.1 – FQMEx 12.1
Fail safe operation and standard operation
Содержание FQM
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