SECTION 3 • FUNCTIONAL DESCRIPTION
TABLE OF CONTENTS
SECTION 3 • FUNCTIONAL DESCRIPTION ........................................................................................... 3-1
GENERAL .............................................................................................................................................. 3-1
FUNCTIONAL DESCRIPTION .............................................................................................................. 3-1
Step-Down Transformers ................................................................................................................... 3-1
Zero-Cross and Phase Difference Measurement ............................................................................... 3-1
Comparator......................................................................................................................................... 3-1
Timer .................................................................................................................................................. 3-1
Minimum Voltage Detection ............................................................................................................... 3-2
Contact Sensing Options .................................................................................................................... 3-2
Power Supply ..................................................................................................................................... 3-2
Power Supply Status Output Option .................................................................................................. 3-2
Voltage Monitor Options ..................................................................................................................... 3-3
Target Indicator .................................................................................................................................. 3-3
Figures Figure 3-1. Functional Block Diagram ....................................................................................................... 3-2
9170200990 Rev U
BE1-25 Functional Description
i
