Danfoss m2 - Input Types and Pulsed Input Setup; Input Type, Number, and Axis Settings; 4-20 mA and Pulsed Input Configuration

m2 Version 3.11 Manual RS.8A.N5.02 © Danfoss 10-2007 19
Input Type
Input Number
Y Axis
Y Base
4 - 20 mA Inputs
Use the ‘ ’ or ‘ ’ keys to cycle through the character list to the required value
and the ‘ ’ or ‘ ’ key to move the cursor left or right respectively. Press the ‘↵’
key to move onto the next eld.
Use the ‘ ’and ‘ ’ keys to cycle through the valid options as follows:
· RESISTOR Resistor input.
· CURRENT 4 - 20 mA input.
· DIGITAL Normally open or normally closed contacts (Contact).
· PT1000 PT1000
This eld is to specify the input number of the (Remote) third party controller or
m2+ unit.
Use the ‘ ’ or ‘ ’ keys to cycle through the character list to the required value
and the ‘ ’ or ‘ ’ key to move the cursor left or right respectively. Press the ‘↵’
key to move onto the next eld.
This eld refers to the overall size of the graph temperature range. Entering
zero selects the auto-scale option. Alternatively, enter the required range. The
range goes from the lowest graph point (Y Base value) to the highest graph
point. Use the ‘ ’, ‘ ’, ‘ ’ or '‘ ’ keys to enter the required value.
This eld refers to the lowest value the graph will show. This value should be
slightly lower than you expect the temperature to drop to. If auto scale in the Y
axis is selected this value is not used. Use the ‘ ’, ‘ ’, ‘ ’ or '‘ ’ keys to enter
the required value.
These values are used exclusively in conjunction with a standard 4-20 mA input
which can represent pressure, humidity, level, ow rate, or any other variable
which can produce a 4-20 mA output.
The value for the upper and lower limits can therefore represent % (RH), PPM,
bar or psi etc., depending on the medium being measured. A numerical
value for 4 mA (lower limit) and 20 mA (higher limit) is entered, and the m2
automatically scales the input for a gure proportional to the measurement.
Use the ‘ ’, ‘ ’, ‘ ’ and ‘ ’ keys to enter the required value.
Finally, press ‘ ’ to return to the Setup Menu.
To setup the pulsed input, from the Point Setup menu select ‘PLS’ in the Point
Type eld. All the remaining elds in ‘Screen 1’ of the Point Setup are the same
as normal.
In ‘Screen 2’ of the Point Setup there are a couple of extra elds added. These
are as explained below:
This eld is to set either the ‘Constant’ or ‘Peak’ value to be used as explained
previously.
This eld is to set the amount of pulses that is to be recieved from the power
meter per kWh.
Pulsed Input Setup
Mode
Pls/kWh