Standard:
●
Switch-off mode adjustable
-
Limit or torque seating for end position OPEN and end position CLOSED
●
Torque by-pass, adjustable up to 5 seconds (no torque monitoring during this time)
●
Start and end of stepping mode as well as ON and OFF time (1 up to 1,800 seconds)
can be programmed individually for directions OPEN and CLOSE.
●
Any 8 intermediate positions between 0 and 100 %, reaction and signal behaviour pro-
grammable
●
Positioner
-
Position setpoint via fieldbus interface
-
Automatic adaptation of the dead band (adaptive behaviour can be selected)
-
Selection between open-close duty and modulating duty via fieldbus interface
Application functions
●
EMERGENCY operation, behaviour programmable
-
Digital input low active, reaction can be selected: Stop, move to end position CLOSED,
move to end position OPEN, move to intermediate position
-
Torque monitoring can be by-passed during EMERGENCY operation.
-
Thermal protection can be by-passed during EMERGENCY operation (only in combi-
nation with thermoswitch in the actuator, not with PTC thermistor).
●
Enabling the local controls via fieldbus interface. Thus, the actuator operation can be
enabled or disabled via push buttons on the local controls.
●
Local Stop
-
The actuator can be stopped via push button Stop of local controls if the selector
switch is in position REMOTE. Not activated when leaving the factory.
●
EMERGENCY stop button (latching) interrupts electrical operation irrespective of the
selector switch position.
●
Interlock, enabling the operation commands OPEN or CLOSE via fieldbus interface
Failure functions
(options)
Standard:
●
Torque monitoring: Valve overload protection (adjustable), results in switching off and
generates fault indication
●
Motor temperature monitoring (thermal monitoring), results in switching off and generates
fault indication
●
Monitoring the heater within the actuator, generates warning signal
●
Monitoring of permissible on-time and number of starts (adjustable), generates warning
signal
●
Operation time monitoring (adjustable), generates warning signal
●
Phase failure monitoring, results in switching off and generates fault indication
●
Automatic correction of the direction of rotation upon wrong phase sequence (3-phase
AC currrent)
Monitoring functions
●
Electronic device ID with order and product data
●
Logging of operating data: A resettable counter and a lifetime counter each for:
-
Motor running time, number of starts, torque switch trippings in end positions CLOSED,
limit switch trippings in end position CLOSED, torque switch trippings in end position
OPEN, limit switch trippings in end position OPEN, torque faults CLOSE, torque faults
OPEN, motor protection trippings
●
Time-stamped event report with setting, operation and fault history:
-
Status signals in compliance with NAMUR recommendation NE 107: "Failure",
”Function check", "Out of specification", "Maintenance required"
●
Torque characteristics
-
3 torque characteristics (torque-travel characteristic) for opening and closing directions,
can be saved separately. Torque characteristics stored can be shown on the display.
Diagnostic functions
72
SGExC 05.1 – SGExC 12.1 Control unit: electromechanic
Technical data
ACExC 01.2 Intrusive Modbus RTU