160
Outputs - Parameter
Type 8098
16.5.4
Configuring a digital output as a pulse output
When the digital output is configured as a pulse output, it transmits:
•
either a number of pulses proportional to the measured volume (
pulse/volume
),
•
or 1 pulse each time a set volume of liquid has been measured by the device (
volume/pulse
).
The number of pulses that can be given out by a pulse output of the device is max. 2000 per
second.
• Make sure the maximum flow rate value (in litres per second) multiplied by the pulse per litre value
is lower than 2000 pulses per second. Else the pulses over 2000 will be given out even if the flow
rate is equal to zero.
•
The pulse output of the device is connected to an input of another equipment, for example a PLC.
Take into account the frequency of the input, because it can be lower than the maximum pulse
frequency that you have set.
To configure a digital output as a frequency output, do the following:
→
Select the device in the navigation area.
→
Outputs
→
Parameter
→
Output 2:digital
or
Output 3:digital
→
Mode
→
Select
Pulse
→
Settings
The current settings are displayed.
→
Counted volume
→
Set the value of the maximum duration of a pulse
→
Set the value of the maximum frequency for the transmission of the pulses
→
Select pulse/volume or volume/pulse in the wanted volume units
→
If you have selected pulse/volume, set the number of pulses to be transmitted on the digital output for
either 1 litre or 1 US gallon or 1 imperial gallon. Enter a number of pulses that is higher than 1. If you
enter a number of pulses that is lower than 1, the display resolution is not optimum.
→
If you have selected volume/pulse, set the volume of liquid for which 1 pulse is transmitted on the digital
output
→
Select to invert the signal or not
→
Select the counting direction
The new settings are displayed.
→
Finish
The digital output is configured as a pulse output.
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