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58 Micro Motion
®
Series 3000 MVD Transmitters and Controllers
Configuring Inputs
For more assistance on configuring the frequency input parameters, see the information provided for
configuring the frequency output parameters, in Section 8.5.
7.5 Configuring the discrete inputs
Note: Be sure to distinguish these discrete input parameters from the discrete input parameters
described in Section 7.3.5, which are used to assign actions to discrete inputs and discrete events.
These parameters allow you to describe the signal used by the discrete inputs. You can configure each
discrete input separately. Discrete input options are listed and defined in Table 7-16. See
Section 7.3.5, Section 11.7, and Chapter 15 for a discussion of the different actions that can be
triggered by a discrete input.
Reset all totals
(1)
None Specify the discrete input or discrete event that will trigger this action.
Start/Stop all
totals
(1)
None Specify the discrete input or discrete event that will trigger this action.
(1) Displayed only if you are configuring a Model 3300 or Model 3350 controller.
Example
A Model 3300 controller indicates a flow rate of 5483 grams per
minute. Calibration of the reference flow element reveals that the actual
flow rate is 5482 grams per minute.
Use the following formula to calculate the K-factor:
Enter a K-factor of 0.9998.
Table 7-16 Discrete input parameters
Polarity Default Description
Active low Active low • The input is considered active when the input level is between 0.0 and 0.8 V.
• The input is considered inactive when the input level is between 3.0 and
30.0 V.
Active high • The input is considered active when the input level is between 3.0 and
30.0 V.
• The input is considered inactive when the input level is between 0.0 and
0.8 V.
Table 7-15 Frequency input parameters continued
Variable Default Description
K-factor
Reference flow rate
Indicated flow rate
----------------------------------------------------
=
K-factor
5482 g/min
5483 g/min
------------------------------ 0.9998==