Emerson Series 3000 MVD User Manual
66
Micro Motion
®
Series 3000 MVD Transmitters and Controllers
Configuring Outputs
Note: The Fault Indication parameter is designed to put the discrete output in a safe state during a
fault condition, and not to indicate that a fault condition is present. If you want to use the discrete
output to indicate faults, assign Fault Condition to the discrete output as described in Section 8.3.2,
and set Fault Indication to None. If you do this, the logical state of the discrete output will be ON
whenever a fault condition is active, and OFF otherwise.
fault condition, and not to indicate that a fault condition is present. If you want to use the discrete
output to indicate faults, assign Fault Condition to the discrete output as described in Section 8.3.2,
and set Fault Indication to None. If you do this, the logical state of the discrete output will be ON
whenever a fault condition is active, and OFF otherwise.
8.4
Configuring the milliamp outputs
Configuring milliamp outputs includes the following procedures:
•
Specifying the milliamp output to be configured
•
Configuring fault indication
•
Assigning a process variable to the output
•
Configuring the calibration span
8.4.1
Milliamp output
Select Milliamp Output 1 or Milliamp Output 2.
8.4.2
Fault indication
To configure fault indication, you must specify:
•
Condition
•
Setting (only if Condition is set to Upscale or Downscale)
•
Last Measured Value Timeout
The Condition parameter specifies the fault indication, or the state of the milliamp output if a fault
occurs. Options for Condition are shown in Table 8-4.
occurs. Options for Condition are shown in Table 8-4.
If Upscale or Downscale is specified, you must also configure the fault indication Setting. Setting
ranges and defaults are shown in Table 8-4.
ranges and defaults are shown in Table 8-4.
Table 8-3
Discrete output fault indication and values
Condition
Discrete output state
Polarity = Active High
Polarity = Active Low
Upscale
• Fault: DO is ON (site-specific voltage)
• No fault: DO is controlled by its assignment
• No fault: DO is controlled by its assignment
• Fault: DO is OFF (0 V)
• No fault: DO is controlled by its assignment
• No fault: DO is controlled by its assignment
Downscale
• Fault: DO is OFF (0 V)
• No fault: DO is controlled by its assignment
• No fault: DO is controlled by its assignment
• Fault: DO is ON (site-specific voltage)
• No fault: DO is controlled by its assignment
• No fault: DO is controlled by its assignment
None
DO is controlled by its assignment
CAUTION
Using Internal zero or None may hamper identification of fault outputs.
To make sure fault outputs can be identified, select Downscale or Upscale.