Functions
5.4 Functions of the RESET buttons
SIRIUS 3RW30 / 3RW40
36
Manual, 01/2010, 535 1995-02 DS01
Thyristor protection (short-circuit)
SITOR semiconductor fuses must be connected upstream to protect the thyristors against
short-circuits (e.g. in case of cable damage or an interturn fault in the motor; refer to chapter
Soft starter assembly with type of coordination 2 [Page 61]). For the fuse selection tables,
refer to chapter Technical data [Page 121].
Protection against voltage failure (in the event of a fault)
NOTICE
If the control supply voltage fails during a trip, the current tripping state of the thermal intrinsic
device protection model and the current recovery time are stored in the soft starter. When the
control supply voltage is restored, the current tripping state of the thermal intrinsic device
protection prior to the power failure are likewise automatically restored.
5.4
Functions of the RESET buttons
5.4.1
SIRIUS 3RW40 2, 3RW40 3, and 3RW40 4 soft starters
5.4.1.1
RESET MODE button and LED
By pressing the RESET MODE button, you define the reset procedure in case of a fault. This
is indicated by the RESET MODE LED.
If the control voltage is disconnected during operation (e.g. in "automatic mode"), the starter
is not protected against voltage failure. You must wait five minutes between two starts to
ensure that the motor protection and the intrinsic device protection are working correctly.
Yellow = AUTO
Off = MANUAL
Green = REMOTE
Note
On the SIRIUS 3RW40 2. soft starter, the RESET MODE button is located underneath the
label (refer to chapter Operator controls, displays, and connections on the 3RW40 [Page 70])
Summary of Contents for SIRIUS 3RW40
Page 1: ...Soft starters SIRIUS 3RW30 3RW40 Manual 01 2010 Industrial Controls Answers for industry ...
Page 2: ......
Page 68: ...Connecting 9 1 Electrical connection SIRIUS 3RW30 3RW40 68 Manual 01 2010 535 1995 02 DS01 ...
Page 210: ...Index SIRIUS 3RW30 3RW40 210 Manual 01 2010 535 1995 02 DS01 ...
Page 211: ......