
Operating
7.2 Operating modes
SIPART PS2 with and without HART communications
Operating Instructions, 09/2007, A5E00074631-07
97
Note
If electrical auxiliary power supply fails when configuring, the positioner responds as follows
until the power supply is reestablished:
• The positioner switches to the first parameter.
• Settings of the values already configured are retained.
In order to save the changed parameter values, exit the "Configuration" mode or switch to
another parameter. When the "Configuration" mode is restarted, the control in the digital
display switches to the last activated parameter.
Manual mode (MAN)
You can move the actuator using the decrement and increment buttons in this mode.
The setting selected here is retained irrespective of the setpoint current and leakages, if any.
Note
Accelerating the actuator movement
Proceed as follows if you wish to accelerate the actuator movement:
• Keep one of the two direction buttons pressed.
• Press the remaining direction button simultaneously.
Note
Failure of power supply
When the power supply is reestablished after a failure, the positioner switches to the
"Automatic" mode.
Automatic (AUT)
Automatic is the standard mode. In this mode, the positioner compares the setpoint position
with the actual position. The positioner moves the actuator until the control deviation reaches
the configurable dead zone. A fault message is displayed if the dead zone cannot be
reached.
Diagnostics
Proceed as follows to call the "Diagnostics" mode from the "Automatic" or "Manual" modes:
1. Press the three buttons of the positioner at the same time for at least 2 seconds.
Current operating data can be called and displayed in this mode, e.g.:
● Stroke number
● Number of changes in direction
● Number of fault messages
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