Analog Input Values; Analog Input Functions For Predefined Configurations - ABB Command Series Instruction Manual

CONFIGURATION

Analog Input Values

AI ZERO
FACTORY CONFIGURATION
4 - 6
Refer to Table 4-1 for a functional description of the analog inputs for
each predefined configuration.
Table 4-1. Analog Input Functions
for Predefined Configurations
Predefined
Configuration Name
Single PID
Single PID External SP
Dual PID
Dual PID External SP
Cascade
Ratio
NOTE:
1. PV = process variable, ESP = external set point, WV = wild variable,
CV = control variable.
The analog input range and type are determined by the AI ZERO, AI
SPAN and SQUARE ROOT function.
This zero value corresponds to a one-volt or four-milliamp input when
using the high level input type. With the selection of the millivolt input,
this value corresponds to a -20 millivolt input. The span value is equal
to the difference between the engineering units value at maximum
(five volts or 20 milliamps) and the zero value. The default value for AI
ZERO is 0.00, the range is -100,000.00 to +100,000.00 engineering
units (EU). Thermocouple and RTD inputs do not require the zero
specification.
1. The analog input screen will appear. To set AI ZERO, press
. When highlighted, press
t
value for AI ZERO. The default value is 0.00. The range is
-100,000.00 to +100,000.00 engineering units (EU). Press
Analog Input
Loop
Meaning
Loop 1 AI1 = PV1
Loop 1 AI1 = PV1
AI2 = ESP1
Loop 1 AI1 = PV1
Loop 2 AI2 = PV2
Loop 1 AI1 = PV1
AI2 = ESP1
Loop 2 AI3 = PV2
AI4 = ESP2
Primary AI1 = PV1
Secondary AI2 = PV2
Wild AI2 = WV1
Control AI1 = CV1
. Use or to enter the correct
SEL t
1
or
.
SEL