AUMA Aumatic AC 01.1 User Manual

7.7.8 Behaviour on loss of the process setpoint (wire break monitoring)
When using 4 – 20 mA signals for the process setpoint and the position
feedback, wire break monitoring is performed.
Loss of the process variable starts the failure behaviour.
Æ
Via the menu to parameter:
MAIN MENU (M0)
SETTINGS (M1)
PROCESS CONTROL PID (M1I)
BEHAVIOUR-LOSS OF E1 (M1I15)
Default value: PID-INTERN
È
Description of the parameter settings:
PID-INTERN
In case of signal loss of the process setpoint, the controls switch to the
internal process setpoint.
FAILURE BEHAVIOUR
The failure behaviour is activated for signal loss process setpoint (page 41).
The failure behaviour defines whether the actuator stops or remains in posi-
tion, whether the valve opens or closes or approaches a parameter-defined
intermediate position.
7.7.9 Inverse operation setting
As standard, the valve is opened by the modulating actuator as soon as the
process variable falls below the process setpoint. Depending on the pro-
cess, it may, however, be necessary that the valve closes as soon as the
process variable falls below the process setpoint. In this case, the respective
parameters are used to set the process controller to inverse operation.
Æ
Via the menu to parameter:
MAIN MENU (M0)
SETTINGS (M1)
PROCESS CONTROL PID (M1I)
INVERSE OPERATION (M1I16)
Default value: FUNCTION NOT ACTIVE
È
Description of the parameter settings:
FUNCTION NOT ACTIVE
Inverse operation is switched off (default).
FUNCTION ACTIVE
Inverse operation is switched on.
66
Actuator controls
AUMATIC AC 01.1/ACExC 01.1 Profibus DP Manual
EDIT M1I16
INVERSE OPERATION
FUNCTION NOT ACTIVE


:EDIT ¿:OK C:ESC
EDIT M1I15
BEHAVIOUR-LOSS OF E1
PID-INTERN


:EDIT ¿:OK C:ESC

AUMA Aumatic AC 01.1 Specifications

General

Brand	AUMA
Model	Aumatic AC 01.1
Category	Control Unit
Language	English