
Function Blocks
ROC Rate of Change Function Block
322
HC900 Hybrid Control Designer Function Block Reference Guide
Revision 11
2/07
ROC Rate of Change Function Block
Description
The
ROC
label stands for
Rate of Change.
This block is part of the Auxiliary category.
Function
Provides:
•
an analog output representing units per minute change of the analog input.
•
compare setpoints for high and low rate of change.
•
compare selections for increasing, decreasing or both directions of change.
•
a logic 1(ON) output when input rate exceeds high rate setpoint
•
a logic 1(ON) output when input rate is less than the low rate setpoint.
Inputs
IN
= Analog Input
Outputs
HI_RC
= ON if input rate exceeds High Rate setpoint
LO_RC
= ON if input rate is less than the Low Rate setpoint
RATE
= Analog Output representing Engineering Units per minute of change of the Analog Input
Содержание HC900
Страница 453: ...Function Blocks XOR Function Block Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 439 2 07 ...
Страница 454: ......
Страница 455: ......