Operating Behaviour Of The Relays - Pepperl+Fuchs KF GUT-(EX)1.D Series Manual

8.5.2 Operating behaviour of the relays

Max or Min can be specified as switching direction; Active or Passive can be activated as direction of
activation (see section 8.5.1). Range of application:
• Switching direction Max, direction of activation Active: Alarm in case of a limit overrange, e.g. horn
ON; overheat protection, e.g. cooling ON
• Switching direction Max, direction of activation Passive: Overheat protection, e.g. heating OFF;
Min/Max operation in case of high hysteresis, e.g. heating ON/OFF
• Switching direction Min, direction of activation Active: Alarm in case of a limit underrange, e.g. horn
ON; undercooling protection, e.g. heating ON
• Switching direction Min, direction of activation Passive: undercooling protection, e.g. cooling OFF;
Min/Max operation in case of high hysteresis, e.g. cooling ON/OFF
The illustration below describes the GUT operating behaviour:
Measured value
Max - hysteresis
Min + hysteresis
Switching direction Max, direction of activation Active:
Switching direction Max, direction of activation Passive:
Switching direction Min, direction of activation Active:
Switching direction Min, direction of activation Passive:
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
Temperature converter with trip relays KF**-GUT-(Ex)1.D
Max
Min
picked up
dropped out
picked up
dropped out
picked up
dropped out
picked up
dropped out
Editing devide data: Relays
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Copyright Pepperl+Fuchs, Printed in Germany
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