Honeywell HC900 Reference Guide

Function Blocks
PI Pulse Input
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 265
2/07
Properties Group Parameter Index # Description Value or Selection
EU per Minute, or
EU per Hour
Preset Use Remote 4
Uses RPRES input
pin in EU.
Click to select.
Use Local 4
Uses local preset
count in EU.
Click to select. Enter
value. Enter 0 for no alarm
indication on PREI (there
are no limits).
Preset Output
Action
Latched Until
Reset
2
The PFQ module output
transistor latches ON until
reset. PREI latches ON
until PFQ module
acknowledges the reset.
Momentary 2
The PFQ module output
transistor turns ON for 1
second. PREI turns on for
approx. 1 second. Counter
is reset to zero and count
continues.
Example
Figure 69 PI function block example

Honeywell HC900 Specifications

General

Series	HC900
Redundancy	Optional
Programming Language	Function Block Diagram, Ladder Logic, Structured Text
Inputs	Analog, Digital
Outputs	Analog, Digital, Relay
Display	Optional
Control	PID, Advanced Control
Power Supply	24V DC or 100-240V AC
Storage Temperature	-40°C to 85°C
Humidity	5% to 95% non-condensing
Communication Protocols	Modbus, Ethernet