Modes - Siemens SIRIUS 3SK1 Equipment Manual

9.3

Modes

The 3SK1 safety relays have 4 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, those LEDs flash yellow whose ON DIP switch position is on the right; all
other parameter settings are not explicitly indicated.
The configuration is accepted by pressing the SET/RESET button for approximately 1 s.
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.
Safety mode (DEVICE LED: green)
In safety mode, all monitoring functions are active in accordance with the set configuration.
Note
Parameterized startup testing is indicated by a green flashing "DEVICE" LED. Only when this has
been successfully executed does the "DEVICE" LED show a green light.
Error mode
Error mode is indicated by a red "DEVICE" LED or by a red "SF" LED. In error mode, the
device ALWAYS changes to the safe state.
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005
Configuration / operation
9.3 Modes
179