Further functions of the 3RW55 soft starters
• The emergency run function permits continued operation if a power semiconductor fails
(from firmware version V2.1)
• Motor heating for minimizing condensation inside the motor for drives outdoors
• Creep speed function in applications with a low counter-torque, e.g. positioning of machine
tools
• DC braking
Further functions of the 3RW55 Failsafe soft starters
• Implementation of applications with the safety function "Safe Torque Off" (STO) and stop
category 0 up to integrity level SIL 3 combined with the following inputs and outputs:
– Failsafe digital input F‑DI (not parameterizable)
– Failsafe signaling output F‑RQ (not parameterizable)
Additional information
You will find an overview of all of the functions of the 3RW5 soft starter in the Catalog IC 10
(
https://support.industry.siemens.com/cs/ww/en/view/109747945
).
You will find further details of the functions in chapter Functions (Page 129).
3.4
3RW5 HMI High Feature
You can use the 3RW5 HMI High Feature to parameterize, monitor and control the 3RW55
and 3RW55 Failsafe soft starters. You can remove the 3RW5 HMI High Feature from the 3RW55
or 3RW55 Failsafe soft starter and mount it in the control cabinet door or on a wall using
accessories. It can be connected to the SIRIUS Soft Starter ES software (TIA Portal) via the local
interface. The 3RW5 HMI High Feature has a TFT color display, LEDs for the status display, and
function and control keys.
Functions
• Configurable function selection key F1-F9
• Configurable start key
Description
3.4 3RW5 HMI High Feature
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
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