Figure 85 - Microboard Serial Data Communication Ports - York YK-EP B Operation & Maintenance Manual

SECTION 5 - SERVICE
CR42 CR41
R G
TX1 RX1
MICRO
CR36 CR39
R G
TX4 RX4
CR37 CR40
R G
TX2 RX2
CR46 CR48
R G
TX6 RX6
UART
CR15 CR38 CR35
R R G G
TX3 RX3
CR43 CR44
R G
TX5 RX5

FIGURE 85 - MICROBOARD SERIAL DATA COMMUNICATION PORTS

220
COM 1
RS-232
COM 4B
COM 2
RS-485
COM 6
RS-485
COM 3
RS-485
OPTO-COUPLE
COM 5
RS-232
TX
RX
DTR
DSR
GTX
GRX
GND
J13
+12V
1
PRIMARY MOTOR CONTROLLER
(-)
2
MODBUS PROTOCOL
(+) -
3 MV VSD, MV SSS, VSD,
GND
STYLE B LCSSS
4
TB2
+12V
1
ECONOMIZER MTR CONTROLLER
(-)
2
MODBUS PROTOCOL
(+)
3
STYLE B LCSSS
GND
4
J12
+24VDC
1
LTC I/O BOARD
+12VDC
2
HOT GAS BYPASS
-12VDC
3
HEAT RECOVERY
-
4
HEAD PRESSURE CONTROL
+
5
MOTOR MONITORING
GND
6
J15
TX
1
RX
YORK PROTOCOL-
2
COMMON
VSD ADAPTIVE CAPACITY
3
CONTROL BOARD OR
4
STYLE B LCSSS
5
6
FORM 160.87-OM1
ISSUE DATE: 8/24/2018
J2
4
PRINTER
3
5
2
7
6
SC-EQ
1
Communication Card
8
LD22061
JOHNSON CONTROLS