Fig. 19 Using the timer for switching on and off
1 «Timer» key
2
Timer
LED
1. Attach an easily seen notice to the machine that warns of time-controlled operation:
Timer control: Risk of injury caused by unexpected starting!
➤ Make sure that the power supply disconnecting device is switched off before commencing any
work on the machine.
Tab. 33 Warning notice for timer control
2. Press the «Timer» key.
The
Timer
LED lights. The timer switches the machine on and off.
8.5 Interpreting operation messages
The controller will automatically display operation messages informing you about the current opera‐
tional state of the machine.
Operating messages are identified with the letter O .
Further information Detailed information can be found in the SIGMA CONTROL 2 operating manual.
8.6 Acknowledging alarm and warning messages
Messages are displayed on the "new value" principle:
■ Message coming: LED flashes
■ Message acknowledged: LED illuminates
■ Message going: LED off
or
■ Message coming: LED flashes
■ Message going: LED flashes
■ Message acknowledged: LED off
8 Operation
8.5 Interpreting operation messages
50
Operator Manual Screw Compressor
SM Tri-Voltage, SIGMA CONTROL 2 9_5875 33 USE