Not ready REMOTE and Function check (collective signal 04)
RemedyDescription/causeIndication on display
●
Detect cause for EMERGENCY signal.
●
Verify failure source.
●
Apply +24 V DC at EMERGENCY input.
Operation mode EMERGENCY is active (EMER-
GENCY signal was sent).
0 V are applied at the EMERGENCY input.
EMCY behav. active
Check I/O interface.The actuator is controlled via the I/O interface (par-
allel).
I/O interface
Start motor operation.Manual operation is activated.
Handwheel active
Verify master configurationFieldbus connection available, however no process
data transmission by the master.
FailState fieldbus
Release push button STOP.A local STOP is active.
Push button STOP of local controls is operated.
Local STOP
Check interlock signal.An interlock is active.
Interlock
Check states of main and by-pass valve.By-pass function is interlocked.
Interlock by-pass
Wait until PVST function is complete.Partial Valve Stroke Test (PVST) is active.
PVST active
11.3. Fuses
11.3.1. Fuses within the actuator controls
F5
Automatic reset fuse as short-circuit protection for external 24 V DC supply for
customer (refer to wiring diagram)
11.3.2. Motor protection (thermal monitoring)
In order to protect against overheating and impermissibly high surface temperatures
at the actuator, PTC thermistors or thermoswitches are embedded in the motor
winding.The thermoswitch is tripped as soon as the max. permissible winding
temperature has been reached.
The actuator is switched off and the following signals are given:
●
LED 3 (motor protection trippped) on the local controls is illuminated.
●
Status indication S0007 displays a fault.
The fault Thermal fault is displayed when selecting Details.
The motor has to cool down before operation can be resumed.
Depending on the parameter setting (motor protection behaviour), the fault signal is
either automatically reset or the fault signal has to be acknowledged.
The acknowledgement is made:
●
in selector switch position Local control (LOCAL) via push button RESET.
●
or with the reset command via fieldbus.
For further information to this topic, please refer to Manual (Operation and setting).
70
SAV 07.2 – SAV 16.2 / SARV 07.2 – SARV 16.2 Control unit: electronic (MWG)
Corrective action ACV 01.2 Modbus RTU
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