27
SECTION 2 - SYSTEM ARCHITECTURE
FORM 160.54-M1
ISSUE DATE: 10/25/2019
JOHNSON CONTROLS
JCI COMPANY CONFIDENTIAL
2
FIGURE 6 -
OPTIVIEW CONTROL CENTER - COMPRESSOR MOTOR VARIABLE SPEED DRIVE (MODBUS
SERIAL COMMUNICATIONS PROTOCOL)
POWER SUPPL
Y
DIGIT
AL
IN
MICRO BOARD
I / O BOARD
TRIAC OUT
RELA
Y
OUT
KEYP
AD
DISPLA
Y
INTERF
ACE
BOARD
LIQUID CR
YST
AL
DISPLA
Y
LAMP
BACKLIGHT INVER
TER
BOARD
LAMP
CONTROL
ROW IN
COLUMN OUT
DISPLA
Y DA
TA
ST
ATUS
/ ALARM
CHILLER SOLENOID V
AL
VES
OIL
PUMP
ST
AR
TER
OIL
HEA
TER ON/OFF
CHILLED
AND CONDENSER W
ATER PUMP
ST
AR
TERS
COMPRESSOR MOT
OR ST
AR
T
COMPRESSOR
VSD LOGIC BOARD
+12 / -12 / +5 VDC
OIL
PUMP
VSD SPEED CONTROL
RS-232 / RS-485 SERIAL
DA
TA
TX/RX
SERIAL
DA
TA
VSD FIL
TER
BOARD
FACTORY-MOUNTED CHILLED AND CONDENSER LIQUID THERMAL-TYPE
FLOW SENSORS (STYLE "F" AND LATER CHILLERS)
CHILLER
TEMPERA
TURES AND
PRESSURES
CONDENSER REFRIGERANT
LEVEL
H
IGH SPEED
THRUST
BEARING POSITION (NOT
APPLICAB
LE
TO "P" COMPRESSORS
AND STYLE "F"
AND LA
TER CHILLERS WITH "G"
AND "H5-8" COMPRESSORS)
REMOTE LEA
VING CHILLED W
ATER
TEMP
AND
CURRENT
LIMIT
SETPOINTS (0-20mA, 4-20 mA
/ 0 - 10 VDC, 2-10VDC)
VANE MOT
OR SWITCH
REMOTE CYCLING
HIGH PRESSURE SAFETY
LOCAL
ST
AR
T / ST
OP
SWITCH
CHILLED
AND CONDENSER W
ATER FLOW SWITCHES (STYLE "E"
AND
EARLIER CHILLERS; OPTIONAL
STYLE F
AND LA
TER CHILLERS WITH
FLASH MEMOR
Y CARD VERSION C.MLM.01.08.XXX OR LA
TER VERSIONS)
OIL
PUMP
VSD CYCLING ST
ATUS
MOT
OR CONTROLLER SHUTDOWN
REMOTE LEA
VING CHILLED W
ATER
TEMP
AND CURRENT
LIMIT
SETPOINTS (CONT
ACT
CLOSURE)
HIGH SPEED
THRUST
BEARING LIMIT
SWITCH ("P" COMPRESSORS
AND
STYLE "F"
AND LA
TER CHILLERS WITH "G, Q"
AND "H5-8" COMPRESSORS)
VARIABLE ORIFICE CONTROL
PRE-ROT
ATION V
ANE CONTROL
VARIABLE GEOMETR
Y DIFFUSER CONTROL
RS-485 MODBUS
SERIAL
DA
TA
(ACC)
PRE-
R
O
TA
TI
O
N
V
AN
ES
P
O
S
IT
IO
N
(V
AR
IA
BL
E
G
EO
M
ET
R
Y
D
IF
FU
SE
R
W
/O
H
O
T
G
AS
B
YP
AS
S)
LT
C
I/O BOARD
HOT
GAS V
AL
VE
HEA
T RECOVER
Y V
AL
VE
HEAD PRESSURE V
AL
VE
HEATING CONDENSER
FLOW SWITCH
HEA
TING CONDENSER
TEMPERA
TURES
MOT
OR
MONIT
ORING
BOARD
WINDING TEMPERA
TURES
BEARING TEMPERA
TURES
VIBRA
TION
COOLING LEAK DETECT
OR
MODBUS
SERIAL D
ATA
LD09561e1