Yaskawa APOGEE FLN P1 - Manual (Page 37)

u Field Panel Controlled Feedback
The sensor is connected to the APOGEE FLN network at a remote location and the control
loop is executed in PPCL using this strategy. The drive speed command is passed from the
field panel to the drive by commanding INPUT REF 1 (Point 60).
NOTICE: Damage to Equipment. Avoid using this strategy. This strategy is not recommended because it
means that the loop is being closed over the network. Delays due to processor scan time and network traffic
can cause control to be degraded or lost and damage to HVAC equipment may result.
n Unbundle the Feedback
Unbundling the feedback (PI FEEDBACK) for monitoring in degrees Fahrenheit:
New Intercept = 30
(Desired Range) x (Slope of Existing Point)
(Range of Existing Point)
New Slope =
(250 - 30) °F x (0.1)
(100 - 0)%
New Slope = = 0.022
Note: 1. Desired Range=Range Maximum - Range Minimum
2. Range of Existing Point=Existing Range Maximum - Existing Range Minimum
u Other Functionalities
Enable the following functions during start-up of the drive:
n Enable the Drive to Run
RUN ENABLE (Point 35) can be commanded to require the drive to have a physical input
(Terminal S3) set before the drive can run. This works in conjunction with CMD RUN.STOP
(Point 24) or the CMD REV.STOP (Point 22). If RUN ENABLE (Point 35) is commanded
ON then terminal S3 needs to be on and CMD RUN.STOP (Point 24) or CMD REV.STOP
(Point 22) needs to be commanded ON for the drive to run.
Alternately, RUN ENABLE (Point 35) is commanded OFF, then to run the drive CMD
RUN.STOP (Point 24) or CMD REV.STOP (Point 22) is the only point that needs to be
commanded ON.
n Start and Stop the Drive
CMD RUN.STOP (Point 24) can be commanded to run the drive in the forward direction.
STOP.RUN (Point 23) shows the current status of the drive.
10 APOGEE FLN P1 Communications
YASKAWA TOEP YAICOM 13 Metasys N2 & Apogee FLN P1 SI-J3 Installation & Technical Manual 37