Samson 5857, Mounting And Operating Instructions, Page: 31 / 80

EB 5857 EN 7-1
Start-up and configuration
7 Start-up and configuration
7.1 Putting the actuator with
three-step signal into
operation
Once the actuator has been mounted cor-
rectly and the wiring has been performed as
described in the 'Installation' section, the
electric actuator is ready for use and can be
controlled by a three-step signal (see specifi -
cations in technical data).
7.2 Putting the actuator with
positioner into operation
7.2.1 Initializing the actuator
To achieve correct position feedback, the ac-
tuator must be initialized. This is also neces-
sary after changing the configuration at the
actuator.
The actuator can be initialized at the actua-
tor itself or over the TROVIS-VIEW software.
The process is disturbed by the movement
of the actuator stem.
Î
Do not perform the initialization while
the process is running. First isolate the
plant by closing the shut-off valves.
Start initialization
1. Press the initialization button for about
one second until the red LED is illuminat-
ed.
2. Release initialization button. Initialization
starts.
The red LED indicates that initialization is in
progress (see page 7-2).
The actuator automatically performs a zero
calibration as soon as the supply voltage is
applied to the L and N terminals. This is
indicated by the red LED blinking (see the
'Operation' section). This function does not
replace the initialization procedure.
Risk of malfunction due to incomplete or
incorrect start-up.
Î
Start initialization
Î
Complete the entire initialization
procedure until the red LED is no longer
illuminated.
The actuator is not ready to use until the
initialization is completed.
NOTICE
!
Note
NOTICE
!