IDEC HR6S-S, Original Instructions Manual

Page: 43 / 97

Engineering
HR9Z-B2202 8/2020
43
Dynamization
Dynamization of Inputs
Dynamization is used for cross circuit detection between two safety-related inputs or between one
safety-related input and the Start input or a cross-circuit to an external power supply unit or to
ground. Dynamization is implemented by means of periodically generated test pulses at the control
outputs of the safety-related inputs S#1 and of the start input Y1.
Whether dynamization of the safety-related inputs is used depends on the selected application
function ( see page 57 ).
The following diagram illustrates the dynamization principle and timing:
The diagram presents the input channels S11-S12 and S21-S22. The remaining input channels
S13 and S23 use the same logic as the input channels illustrated.
The same logic applies to Y1 and Y2.