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Download Zelio Logic 2 - Electrocomponents
Transcript
LD Language Elements Clocks Description The Clock function is used to validate the time ranges during which actions can be executed. The smart relay has 8 Clock function blocks numbered from 1 to 8. Each of these has four programming ranges and behaves like a weekly programmer. The Clock function blocks are used like contacts. Use as a Contact This contact may use the direct state of the Clock function block (normally open mode) or its inverse state (mode normally closed), see below. Normally open mode: Symbol of the normally open contact, representing a clock: - H- The contact is conducting when the clock is in a validity period. Normally closed mode: Symbol of the normally closed contact, representing a clock: - h- The contact is conducting when the clock is not in a validity period. SR2MAN01EN 11/2005 139
