Installation Instructions Manual

Bul. 937C Transmitter Suppl
y Converter Installation Instructions
Operating behaviour
The switching direction can be set as Max or Min and the direction of action as Active or Passive .
Application ranges:
• Switching direction Max, mode of operation Active:
alarm on trip value overrange, e. g. audible alarm on
•
Switching direction Max, mode of operation Passive:
switch off on trip value overrange, e. g. pump, heating, ... off; with large
hysteresis Min/Max operation (pump, heating, ... on/off)
• Switching direction Min, mode of operation Active:
alarm on trip value underrange, e. g. audible alarm on
• Switching direction Min, mode of operation Passive:
switch off on trip value underrange, e. g. pump, heating, ... off; with
large hysteresis Min/Max operation
(pump, heating, ... off/on)
Alarm freeze ——
On
Off
Delay
—— 0 s ... 250 s
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