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Valve outputs | Cyclical command value monitoring / emergency
operation
As soon as a command value telegram is missing on a monitored valve out-
put, and thus emergency operation is activated, then the actuator transmits a
fault signal via the object "Command value - Fault - Status" according to the
configured telegram polarity. Only after at least one command value telegram
has been received for the monitored valve output does the actuator retract the
fault signal for cyclical monitoring.
￭
Activate the checkbox "Cyclical transmission in the case of faulty command
value".
If a command value fault is identified, then the actuator transmits the fault tele-
gram cyclically. The cycle time is defined for all cyclical status and feedback
functions on the parameter page "General - Valve outputs".
￭
Deactivate the checkbox "Cyclical transmission in the case of faulty command
value".
If a command value fault is identified, then the actuator transmits the fault tele-
gram only once.
9.5.1 Command value monitoring / emergency operation parameters
Enabling the function "Command value monitoring"
VOx - General -> Enabled functions
Command value monitoring
Here, cyclical monitoring of the command values can be enabled as an option ("Yes"
setting). If, in active cyclical monitoring, there are no command value telegrams dur-
ing the monitoring time preset by the parameter of the same name, then emergency
operation is activated for the affected valve output, for which a configurable constant
PWM command value can be preset.
Setting the function "Command value monitoring"
VOx - General -> Command value monitoring
Monitoring cycle
This parameter specifies the monitoring cycle of the command value monitoring. The
actuator must receive at least one command value telegram within the time frame
specified here. If there is no command value telegram, then the actuator will assume
a fault and will activate emergency operation for the affected valve output. This para-
meter is only available if command value monitoring is enabled.
Presetting of the monitoring time minutes and seconds.
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
Checkbox (yes / no)
0...20...59 min
0...59 s
Page 84 of 257
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