Honeywell HC900 - PPO Position Proportional Output Function Block

Function Blocks
PPO Position Proportional Output Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 293
2/07
PPO Position Proportional Output Function Block
Description
The PPO label stands for Position Proportional Output. This block is part of the I/O Blocks
category.
Function
Allows the control of a valve or other actuator having an electric motor driven by two digital output
channels; one to move the motor upscale, the other to move it downscale, with a feedback signal
to indicate motor position. Supports motor speeds from 12 -300 seconds.
Input
PSP = Position Setpoint – Scaled or %(default)
Output
POS = Position Feedback Value from Feedback Signal (%)
MFAIL = Motor failure Indication. ON = Motor Failure (not moving)
FFAIL = Failed Feedback Input Indicator – AI Error
Block properties