Handwheel Operation In Combination With Positioning Loop Monitoring - ABB RHDE250 Series Operating Instruction

RHDE250 to RHDE4000 (Contrac) ELECTRICAL ROTARY ACTUATOR | OI/RHDE250_4000-EN REV. B
Handwheel operation in combination with positioning
loop monitoring
The positioning loop monitoring of the electronic unit monitors
actuator behavior. The electronic unit monitors whether the
travel commands trigger the corresponding processes.
When the supply voltage is switched off, the positioning time-
out function is disabled and handwheel operation is no longer
monitored.
If the actuator is moved via the handwheel while the supply
voltage is switched on, the positioning loop monitoring
recognizes this state as 'travel without travel command'. A
corresponding signal is output.
There are several options for resetting this positioning loop
error:
• Resetting via the commissioning and service field
• Resetting via the graphical user interface
• Changing the setpoint signal by at least 3 % for more
than 1 s
• Wiring of digital inputs BE2 or BE3
(not with step controller)
Note
In the case of actuators with an explosion-proof design, the
'positioning loop monitoring' function must not be deactivated!
Change from two to one column
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