Damper percent command versus damper position feedback - Metasys - LIT-12013631 - M4-CVM Actuator - Release 11.0

CV Series Controller Actuator Feedback Application Note

Brand
Metasys
Product name
M4-CVM Actuator
Document type
Application Note
Document number
LIT-12013631
Version
Release 11.0
Revision date
2022-01-26
Product status
Active
Language
English

When you use the alarm extension in this case, a warning generates if the damper position feedback differs from the damper percent command.

Procedure

  1. In the All Items tree, locate the damper position feedback sensor mapper object.
  2. Right-click the object.
  3. Click Show Extensions. The Extension Wizard appears.
  4. Click New on the Alarm row.
  5. Click Next as this alarm is on the Present Value attribute. The Configuration dialog window appears.
    1. In the Name text box, type a name for the value.
    2. Optional: in the Report Delay text box, you can define a value other than zero.
    3. Leave the fields for High Alarm Limit and Low Alarm Limit blank.
    4. Click the three dot icon next to Object Name in Setpoint Reference. Locate the damper percent command object that is part of the same CVM/CVE as the integrated position feedback object. Use the Present Value as the Attribute in the Setpoint Reference section.
    5. Optional: set values for the High Warning Offset and Low Warning Offset in the Engineering Values section. Use a value of 5.00 for both.
    6. Optional: set values for the Reference Delay Time in the Engineering Values section. Set the same value as the effective actuator stroke time.
      Figure 1. Configuration window

  6. Click Next as this alarm is on the Present Value attribute. The Configuration dialog window appears.
    Note: When the damper percent command updates, the warning reference also updates.
    Note: The High Warning Offset and Low Warning Offset is the amount above and below the Warning reference that the damper position feedback can differ from the associated damper percent command. If the difference falls outside of the bounds, the reference delay time must lapse before the warning announces. The reference delay time should match the stroke time of the actuator.