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Options for Discrete Input Polarity
Options for Discrete Input PolarityTable 6-12:
Polarity Discrete input
power supply
Voltage Status of discrete in-
put at transmitter
Active High
Internal Voltage across terminals is high ON
Voltage across terminals is 0 VDC OFF
External Voltage applied across terminals is
3–30 VDC
ON
Voltage applied across terminals is
<0.8 VDC
OFF
Active Low
Internal Voltage across terminals is 0 VDC ON
Voltage across terminals is high OFF
External Voltage applied across terminals is
<0.8 VDC
ON
Voltage applied across terminals is
3–30 VDC
OFF
6.5 Configure the mA input
Display OFF-LINE MAINT > OFF-LINE CONFG > IO > MAI
ProLink II ProLink > Configuration > Milliamp Input
Field Communicator Configure > Manual Setup > Inputs/Outputs > Milliamp Input
Overview
The mA input is used to receive pressure or temperature data from an external
measurement device.
The mA input parameters include:
•
mA Input Process Variable
• Lower range value (LRV)
• Upper range value (URV)
Important
Whenever you change an mA input parameter, verify all other mA input parameters before returning
the flowmeter to service. In some situations, the transmitter automatically loads a set of stored
values, and these values may not be appropriate for your application.
Integrate the meter with the control system
106 Micro Motion
®
9739 MVD Transmitters