CNT-SVX05A-EN
9
Physical specifications
Binary inputs
Each binary input associates an input signal of 0VDC with closed contacts and
24VDC with open contacts. If the wired binary device has closed contacts, a
multimeter should measure less than 1.0VDC across the binary input terminals.
If the binary input has opened, a multimeter should measure greater than 20VDC
across the binary input terminals.
Table 5 — Binary inputs
Description
Function
Factory
terminals
Field
terminals
Label
Terminal function
IN 7
Low temp detect
J37
TB37-1
TB37-2
IN
GND
24VDC
Ground
IN 8
Run/stop
J38
TB38-1
TB38-2
IN
GND
24VDC
Ground
IN 9
Occupancy or
generic
J39
TB39-1
TB39-2
IN
GND
24VDC
Ground
IN 10
Supply fan status
J40
TB40-1
TB40-2
IN
GND
24VDC
Ground
IN 11
Filter status
J41
TB41-1
TB41-2
IN
GND
24VDC
Ground
IN 12
Exhaust fan status
J42
TB42-1
TB42-2
IN
GND
24VDC
Ground
