SIPOS SEVEN 2SA7 - EMERGENCY Position; Fault Control Source

Operation instructions
SIPOS SEVEN: PROFITRON, HiMod
Page 78 Y070.302/EN
8 Parameters and possible parameter values
8.4 Safety-relevant parameters
8
Parameters and possible parameter values
Move to EMERGENCY pos�
In the event of signal loss from the control room, EMERGENCY operation will be triggered.
The following is shown in the display: ‘No signal – EMERGENCY pos.’
Keep position
In the event of signal loss, the current position is held and ‘No signal - Pos. held’ is shown in
the display.
Keep actual process value
The actual process value is held and "Keep actual process value” is shown in the display. Only
if ‘Process controller’ is active
Move to xed setpoint
Onlossofsignaloftheactualprocessvalue,thexedprocesssetpointisapproachedand
held.‘Movetoxedsetpoint’isshowninthedisplay.
Execute last command
In the event of signal loss from the DCS, the last command prior to signal loss will be executed.
'’Execute last command’ is shown in the display.
Thissettingisonlyusefulforcontrolviaeldbus.
‘Keep position’ is set in the factory.
8�5 Software functions
In addition to the standard functions, further software functions can be enabled. The additional func-
tionsareclassiedas
Control source fault
Move to EMERGENCY pos.
Keep position
Keep actual process value
Movetoxedsetpoint
Execute last command
■
Software functions and
■
Customer variants.
Software functions are functions which enhance
the scope of delivery of the actuator (refer also
to the following section “Optional software func-
tions”).
Customer variants are customized programmed
functions deviating from the standard functions
andadaptingtheactuatorbehaviortospecic
customer requirements.
Software functions and customer variants are
already enabled within the actuator if they were
part of the order. They can also be enabled at a
laterdate,refertog.”Softwarefunctionmenu”
above and the following chapter.
Fig�: Software functions menu
Software functions
Name of software functionProcess controller
Positioner
Enable software functions
Name of software functionAnalog speed setpoint
Positioning time curve
Name of software function
Name of software function
Split range function
Speed curve
Proportional move
Customer variant
Parameter
Alternative control mode
8�4�3 EMERGENCY position
During EMERGENCY operation, the position indicated here will be automatically approached.
EMERGENCY position
XX %
EMERGENCY position 0 to 100 % in 1 % increments�
Set to 0 in the factory.
8�4�4 Fault control source
A control wire interruption is detected for control
via:
■
Analog inputs with signal range 4 – 20 mA,
■
Fieldbus