A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS Page 177
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Parameters
2.11.2.3. Relay Duration
The time in seconds from one change of state in the relay to the next.
2.11.2.4. Assigned Relay
Determines the relay assigned to time of day control.
2.11.2.5. Relay Logic
Use to change the behaviour of the relay assigned to time of day control.
Relay contact operation is NORMALLY CLOSED for alarms and NORMALLY
OPEN for controls.
By default a control contact is Normally Open. For
2.11.2.3.Relay Duration
the corresponding relay coil is energized. By setting this parameter to
Normally Closed, the relay coil will be de-energized for the duration phase.
2.11.3. External Totalizer
Available only on LUT430 (Pump and Flow model), and LUT440 (OCM model).
This function tracks the volume of material that passes through a system. The
external totalizer controls a relay to signal an external totalizing device. 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 on page
66.)
2.11.3.1. Enable
Enables/disables external totalizer relay control.
2.11.3.2. Multiplier
Use to scale the external totalizer up or down as required.
This allows the totalizer relay to click for different values of volume.
Example:
To click once every 4310 units, set
2.11.3.2. Multiplier
to 4310.
Values
Range: 1 to 9999
Default: 10
Options
*RELAY 1
RELAY 2
RELAY 3
Options
*
NORMALLY OPEN
NORMALLY CLOSED
Note: Default settings in the parameter tables are indicated with an asterisk
(*) unless explicitly stated.
Options
ENABLED
* DISABLED
Values
Range: 0.0000001 to 99999.000
Default: 1.000
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