Figure 4.10-1 Sequence Diagram: Quick Logic Pu/Do Timers (Counter Reset Mode Off) - Siemens 7SR21 Manual

7SR21 & 7SR22 Argus Description of Operation

Figure 4.10-1 Sequence Diagram: Quick Logic PU/DO Timers (Counter Reset Mode Off)

When the count value = En Counter Target the output of the counter (En) = 1 and this value is held until the
initiating conditions are removed when En is instantaneously reset.
The output of En is assigned in the OUTPUT CONFIG>OUTPUT MATRIX menu where it can be programmed to
any binary output (O), LED (L) or Virtual Input/Output (V) combination.
Protection functions can be used in Quick Logic by mapping them to a Virtual Input / Output.
Refer to Section 7 – Applications Guide for examples of Logic schemes.
©2010 Siemens Protection Devices Limited Chapter 1 Page 59 of 71