Honeywell UMC800 Reference Guide

Function Blocks
Function Block Reference Guide 3/99234
2.77 VLIM Function Block,
continued
Block Properties
Double click on the function block to access the
function block properties dialog box.
Block Order (Read Only)
You can change the assigned execution order
number by selecting “Execution Order” in the
“Configure” menu and arrange the order to suit
your control strategy.
Configuration Parameters
You must configure the VLIM function Block
parameters to the desired value or selection that
matches your operating requirements.
Table 2-66 describes the parameters and the
value or selection.
Table 2-66 VLIM Configuration Parameters
Properties Group Parameter Index# Parameter Description Value or Selection
Set Limits
Increase
Rate Limit
0 Limits the
increasing
rate at
which the analog input value
can change
0 to 99999 (eu/min)
Decrease
Rate Limit
1 Limits the
decreasing
rate at
which the analog input value
can change
0 to 99999 (eu/min)
Example
Figure 2-81 shows a VLIM function block that limits the increasing or decreasing rate at which the output
can change based on user specified limits when the Enable input is ON (1).
Output
Input
Figure 2-81 VLIM Function Block Example

Honeywell UMC800 Specifications

General

Brand	Honeywell
Model	UMC800
Category	Controller
Language	English