Modes - Siemens SIRIUS 3SK1 Manual

10.3

Modes

The 3SK1 safety relays have four main operating modes:
● Power-up
● Configuration mode
● Safety mode
● Error mode
Power-up
On powering up (up to 7 seconds), the 3SK1 safety relay runs through a complete function
test.
Configuration mode
A saved configuration can only be modified in configuration mode.
The configuration must only ever be modified after disconnecting the power supply.
If the device detects a configuration change during the restart (DIP, PAR, potentiometer,
input expansion, output expansion), it does not change automatically to safety mode after
power up, but instead remains in configuration mode.
In configuration mode, the LEDs (yellow) whose DIP switch position is ON (right) flash; all
other parameter settings are not explicitly indicated.
The configuration is accepted by pressing the SET/RESET button for approximately 1s.
In configuration mode, the device is in the safe state. No monitoring functions are active.
Note
A configuration change made during operation is not accepted, and in safety mode, this is
indicated by a yellow/green flashing "DEVICE" LED. The device can be restarted by
performing a RESET (pressing the SET/RESET button) or by disconnecting and
reconnecting the supply voltage.
3SK1 safety relays
Manual, 04/2013, A5E02526190021A/RS-AA/01
Configuration / operation
10.3 Modes
183