8
Section 2
Model 289A Differential Pressure Indicating Switch
IMPORTANT: Due to their size, subminiature switches have small mechanical clear-
ances; therefore, no rating above 250 VAC has been established.
Table 2.1—Switch/Relay Wire Color Coding (4/06c)
289A LEGACY CONFIGURATIONS
(prior to Apr. 2006)
289A CURRENT CONFIGURATIONS
NO
C
NC
NO
C
NC
SPDT SWITCHES
Low
Red
Yellow
Blue
Red
Yellow
Blue
High
Black
Green
White
Black
Violet
Orange
DPDT SWITCHES
Low #1
Red
Yellow
Blue
Red
Yellow
Blue
Low #2
White/Red
White/Yellow
White/Blue
White/Red
White/Yellow
White/Blue
High #1
Black
Green
White
Black
Violet
Orange
High #2
White/Black
White/Green
White/Violet
White/Black
White/Violet
White/Orange
4-INDEPENDENTLY ADJUSTABLE SWITCHES
Low #1
Red
Yellow
Blue
Red
Yellow
Blue
Low #2
White/Red
White/Yellow
White/Blue
White/Red
White/Yellow
White/Blue
High #1
Black
Green
White
Black
Violet
Orange
High #2
White/Black
White/Green
White/Violet
White/Black
White/Violet
White/Orange
SWITCHES FOR RELAYS
Low
Red
Yellow
Blue (Note 1)
White/Brown
Brown
White (Note 1)
High
Black
Green
White (Note 1)
White/Gray
Gray
White (Note 1)
RELAYS
Low #1
Gray
Blue
Brown
Red
Yellow
Blue
Low #2
White/Gray
White/Blue
White/Brown
White/Red
White/Yellow
White/Blue
High #1
Violet
White
Orange
Black
Violet
Orange
High #2
White/Violet
White/Black
White/Orange
White/Black
White/Violet
White/Orange
Coil
Wiring:
Legacy Ver.: Low = Red and High = Black
Current Ver.: Low = White/Brown and High = White/
Gray
Note 1: Wire is NOT connected.
Startup
For startup procedures, warnings, and other information, refer to the Model
199 DPU user manual in Appendix A.
IMPORTANT: To ensure the unit calibration is within factory-set calibration tolerances,
perform the Calibration Check procedure on
page 15
.
Содержание BARTON 289A
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