Honeywell HC900 Reference Guide

Function Blocks
RAMP Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 313
2/07
Table 91 RAMP general tab parameters
Properties Group Parameter Index # Parameter Description Value or Selection
General
Tag Name
N/A 16-character tag name
Descriptor
N/A Block description
16 character maximum
Display
IN Decimal
Places
N/A
Parameter Decimal Places
shown on the operator Interface
for the Input and Input Limit.
Range 0 to 5
Enter selection in field
OUT Decimal
Places
N/A
Parameter Decimal Places
shown on the operator Interface
for the Output and Output Scale
Limit.
Range 0 to 5
Enter selection in field
IN Engr.
Units
N/A
PV Engineering Units for
Operator Interface. Also applies
to Input Limit parameters.
Four characters maximum
Enter characters in field
OUT Engr.
Units
N/A
Output Engineering Units for
Operator Interface. Also applies
to Output Scale Limit
parameters.
Four characters maximum
Enter characters in field
Settings Off Value
16
Value written to OUT when the
scale is disabled. If no scales
are selected, then the default
Input value [DFLT] is the output.
Within the Output Limits
Lag Time
(Sec)
19
Lag Time Constant
Range: 0.0 to 120.0
seconds. 0=no lag
Transfer
Rate Up
(EU sec)
17
Transfer Rate in Engineering
Units/second when switching to
a
higher value (bumpless
analog transfer).
Range: 0-99999 EU/sec
Transfer
Rate Down
(EU sec)
18
Transfer Rate in Engineering
Units/second when switching to
a
lower value (bumpless analog
transfer).
Range: 0-99999 EU/sec

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