Figure 27 - I/O Board Typical Opto-Coupler Circuit; Figure 28 - I/O Board Typical Field Connections - Johnson Controls YORK OPTIVIEW YK Series Service Instructions Manual

FORM 160.54-M1
TB4 - X
TB3 - X
NEUTRAL
TB3 - 2

FIGURE 27 - I/O BOARD TYPICAL OPTO-COUPLER CIRCUIT

FIELD SUPPLIED
DRY CONTACTS
(RATED 5MA @ 115VAC)

FIGURE 28 - I/O BOARD TYPICAL FIELD CONNECTIONS

JOHNSON CONTROLS
OPTO-COUPLER
TYPICAL (20 CKTS)
TB4 - X
TB4 - 1
+5VDC
J19 - 21
JI - 22/23
OPTO-
COUPLER
115VAC
TB3 - 1
SECTION 5 - I/O BOARD
JI - Y
5
LD04057
J1 - Y
LD04058
77