8. Signals
8.1 Signals via fieldbus
The feedback signals via Modbus RTU can be read using the appropriate Modbus
function codes.
For further information, please refer to the Manual (Device integration fieldbus).
8.2 Feedback signals via output contacts (binary)
— (Option) —
Feedback signals via output contacts are only available if a parallel interface is
provided in addition to the fieldbus interface.
The output contacts can be used to indicate operation modes of the actuator or the
controls as binary signals.The signals can be freely assigned. Example:
Output contact open = no thermal fault
Output contact closed = thermal fault in actuator
The output contacts are denominated in the wiring diagram as follows:
●
Output contacts 1 to 5: DOUT1 to DOUT5
●
Alarm contacts: NC fault/NO ready
Signal assignment is made via the parameters: OUTPUT CONTACT 1 to OUTPUT
CONTACT 5 and ALARM CONTACT.
Alarm contact default value:
FAULT GROUP 3 = fault signal (includes: torque fault, thermal fault, phase failure
and internal faults)
Default values OUTPUT CONTACT 1 to OUTPUT CONTACT 5:
OUTPUT CONTACT 1 = CLOSED POSITION
OUTPUT CONTACT 2 = OPEN POSITION
OUTPUT CONTACT 3 = REMOTE SW. POSITION
OUTPUT CONTACT 4 = TORQUE FAULT (CLOSE)
OUTPUT CONTACT 5 = TORQUE FAULT (OPEN)
8.3 Feedback signals (analogue)
— (Option) —
Analogue feedback signals are only available if the following conditions are met:
●
In addition to the fieldbus interface, the AUMATIC is equipped with a parallel
interface.
●
The actuator is equipped with a position transmitter (potentiometer or RWG).
Valve position
Signal: E2 = 0/4 – 20 mA (galvanically isolated)
Designation in the wiring diagram:
ANOUT1 (position)
For further information to this topic, please refer to the Manual (Operation and setting).
37
SA 07.1 – SA 16.1/SAR 07.1 – SAR 16.1 Control unit: electromechanic
AC 01.1 Intrusive Modbus RTU Signals
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