Date of issue 11/30/07 805639
HART Loop Converter KFD2-HLC-(Ex)1.D(.**)
Editing device data: Relay
30
8.5.2 Assignment
The values of the HART variables selected here (PV, SV, TV, QV) are monitored via the relay output
(see section 8.5.3). The number of available variables depends on the HART field device. If disabled
is selected, the relay remains without power permanently.
8.5.3 Switching characteristics
The Max or Min switching direction and the Active or Passive switching mode can be preset (see
section 8.5.1).
Application areas:
• Switching direction Max, switching mode Active: Alarm after trip overrange, e. g. horn on
• Switching direction Max, switching mode Passive: Shutdown after trip overrange, e. g. pump,
heating, ... off, if the Min/Max operation hysteresis is large (pump, heating, ... on/off)
• Switching direction Min, switching mode Active: Alarm after trip underrange, e. g. horn on
• Switching direction Min, switching mode Passive: Shutdown after trip underrange, e. g. pump,
heating, ... off, if the Min/Max operation hysteresis is large (pump, heating, ... on/off)
Switching mode (8.5.3) —— Passive
Active
Restart inhibit (8.5.5) —— On
OFF
Response delay (8.5.6) —— 0 s ... 250 s
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