Siemens SITRANS LUT400, Operating Instructions Manual

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Page 94 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS A5E33329501
mmmm
m
Gener
a
l Oper
at
ion
Relay contacts
Pumped volume is calculated at the end of the pump cycle. Totalized volume when
External Totalizer
function is enabled will be given in bursts at the end of the pump cycle,
not throughout the pump cycle.
Use
2.11.3.3. Relay Duration
to set the time in seconds from one change of state in the
relay to the next. This parameter sets both the open and closed times for the relay
contact and is preset to 0.2 seconds. Partial units are added to the next pump cycle.
Example:
Shows a relay set up to make one contact for every cubic metre (m
3
) of liquid.
The following parameters describe how to setup a Totalizer or Sampler.
Relay Duration ON time
Relay Duration OFF time
4m
3
2m
3
2m
3
3m
3
1m
3
Pump Cycle
relay contact closed
relay contact open