York OPTIVIEW YK - FIGURE 83 - LTC I;O Board Basic Block Diagram; FIGURE 84 - 120 VAC Digital Input

232
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 27 - LARGE TONNAGE CHILLER (LTC) I/O BOARD 031-02895-000/001
JCI COMPANY CONFIDENTIAL JOHNSON CONTROLS
INPUT CONNECTION LED
DI1 TB20-1(+) CR20
-2(-)
DI2 TB20-3(+) CR21
-4(-)
DI3 TB19-1(+) CR22
-2(-) (-001 board only)
DI4 TB19-3(+) CR23
-4(-) (-001 board only)
DI5 TB18-1(+) CR24
-2(-) (-001 board only)
DI6 TB18-3(+) CR25
-4(-) (-001 board only)
FIGURE 83 - LTC I/O BOARD BASIC BLOCK DIAGRAM
LD14232
P
R
O
C
E
S
S
O
R
PROGRAMMING
PORT
MODBUS
ADDRESS
SELECT
RS485
XCVR
MUX
OPTO
COUPLER
(see FIG 84)
DIGITAL INPUTS
ANALOG INPUTS
DIGITAL OUTPUTS
PULL-UP/DOWN
SELECTS
(see FIG 85)
RELAYS (see FIG 86)
TRIACS (see FIG 87)
12VDC (see FIG 88)
LOAD RESISTORS
(see FIG 89)
MUX
MUX
VOLTAGE
DIVIDER
5VDC
REG
+24VDC
24V RET
12V RET
+12VDC
J1
4
RX
CR4
J9-3/11
TB8-1
TB8-2
J9-5/13
J9-7/15
TP4
+5VDC
+5V REF
J9-4/12
TX
CR5
(+)
(-)
8
SW1
1
2
TP1
TP3
TP5
TP2
GND
POWER
CR3
STATUS
CR8
CR20-25
CR26-27
SELECT
SELECT
TB18-TB20
120VAC
INPUTS
TB21
TB16-TB17
TB12-TB15
TB11
J10-J11
TB9-TB10
TB1-TB7
+5VDC TTL
INPUTS
RELAY
OUTPUTS
TRIAC
OUTPUTS
OPEN
COLLECTOR
OUTPUTS
0-5VDC
0-10VDC
4-20MA
INPUTS
0-10VDC
4-20MA
OUTPUTS
ANALOG OUTPUTS (see FIGURE 89)
FIGURE 84 - 120 VAC DIGITAL INPUT
LD14233
OPTO
COUPLER
TB20
120VAC
1
2
DI1+
DI1-
TB21
5VDC TTL
1
2
3
5V
+5VDC
5.1K
DI7
GND
+5VDC
GND
PULL DOWN
SELECT FROM
PROCESSOR
TB21
5VDC TTL
1
2
3
5V
+5VDC
5.1K
DI7
GND
+5VDC
GND
PULL UP
SELECT FROM
PROCESSOR