Watchdog Timer - Siemens Simotion TM 121C Applications Manual

7.5.2

Watchdog timer

Figure 7-3
The run time of three valves can be monitored.
The valve run time can be variably parameterized from 20 to 2000 ms. The
feedback input can be defined as an NO or NC contact.
© Siemens AG 2003 All Rights Reserved
SIMOTION Safety Unit (AP) - Edition 06.2003
Watchdog timer
Procedural functions of press brakes
7-55