Siemens SIRIUS 3RW40, Manual

Page: 37 / 212

Functions
5.4 Functions of the RESET buttons
SIRIUS 3RW30 / 3RW40
Manual, 01/2010, 535 1995-02 DS01
37
5.4.1.2 Manual RESET
WARNING
Manual RESET with the RESET / TEST button (RESET MODE LED = off)
You can reset a fault by pressing the RESET / TEST button.
5.4.1.3 Remote RESET
Remote RESET (RESET MODE LED = green)
You can reset a fault signal by disconnecting the control supply voltage for >1.5 s.
5.4.1.4 AUTO RESET
AUTO RESET (RESET MODE LED = yellow)
If you set the RESET mode to AUTO, a fault is automatically reset as follows:
• If the motor overload protection function trips: after 60 s
• If the intrinsic device protection function trips: after 30 s
• If the thermistor evaluation function trips: after the temperature sensor in the motor has
cooled down
5.4.1.5 Acknowledging faults
For information about whether or not faults can be acknowledged as well as the
corresponding LED and output contact states, refer to chapter Diagnostics and fault signals
[Page 44].
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Automatic restart
Danger of death, serious injury, or property damage.
The automatic RESET mode (AUTO RESET) must not be used in applications where
there is a risk of serious injury to persons or substantial damage to property if the motor
starts up again unexpectedly. The start command (e.g. issued by a contact or the PLC)
must be reset prior to issuing a RESET command because the motor attempts to restart
again automatically following this RESET command if a start command is still present.
This particularly applies if the motor protection has tripped. For safety reasons, you are
advised to integrate the group fault output (terminals 95 and 96) in the controller.