SITRANS LUT400
216 Operating Instructions, 07/2019, A5E33329501-AC
Relay Duration (2.11.3.3.)
The time in seconds from one change of state in the relay to the next.
Assigned Relay (2.11.3.4.)
Determines the relay assigned to external totalizer control.
RELAY 3
Relay Logic (2.11.3.5.)
Use to change the behaviour of the relay assigned to external totalizer control.
Relay contact operation is NORMALLY CLOSED for alarms and NORMALLY OPEN for
controls.
By default a control contact is Normally Open. For Relay Duration (2.11.3.3.) (Page 216) the
corresponding relay coil is energized. By setting this parameter to
Normally Closed, the relay
coil will be de-energized for the duration phase.
9.2.11.4 External Sampler (2.11.4.)
Available only on LUT430 (Pump and Flow model), and LUT440 (OCM model).
This function uses a relay to signal a flow sampling device when a certain volume of material
has passed through a system (set by the Multiplier), or after a defined period of time (set by
the Interval). The relay toggles on and off at a rate set by the parameters below. (For details
on relay behaviour under fail-safe conditions, see Miscellaneous relays (Page 88).)
Note
Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly
stated.
Enable (2.11.4.1.)
Enables/disables flow sampler relay control.
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