29
SECTION 2 - SYSTEM ARCHITECTURE
FORM 160.54-M1
ISSUE DATE: 10/25/2019
JOHNSON CONTROLS
JCI COMPANY CONFIDENTIAL
2
0
10
13
45
50
110
(0.17) (0.22) (0.75) (0.83)
(1.83)
START
VANES
START
TO
CLOSE
VANES
CLOSED
1800
(30)
RESTART
FLOW
BYPASS
SWITCH
MAN. OIL
PUMP
DISABLED
AUTO ZEROING DIFFERENTIAL
OIL PRESSURE TRANSDUCERS
ENERGIZE (OPEN)
OIL RETURN SOLENOID AND LIQUID LINE
SOLENOID (J COMPRESSOR ONLY)
** VANES CLOSING - TIME
DEPENDENT ON INITIAL
VANE POSITION
OIL PRESSURE CHECK
OIL PUMP ON
150 SEC.
(2.5 MIN)
"SYSTEM
COASTDOWN"
"SYSTEM
SHUTDOWN"
TIME IN SECONDS (MINUTES)
DISPLAY
MESSAGE
"SYSTEM RUN"
"SYSTEM PRELUBE"
** "VANES CLOSING
BEFORE
SHUTDOWN"
0
10
13
45
50
65
110
(0.17) (0.22) (0.75) (0.83) (1.08)
(1.83)
START
VANES
START
TO
CLOSE
VANES
CLOSED
1800
(30)
RESTART
FLOW
BYPASS
SWITCH
MAN. OIL
PUMP
DISABLED
AUTO ZEROING DIFFERENTIAL
OIL PRESSURE TRANSDUCERS
ENERGIZE (OPEN) HIGH SPEED
THRUST SOLENOID
ENERGIZE (OPEN) LIQUID LINE, VENT LINE
AND OIL RETURN SOLENOIDS
** VANES CLOSING - TIME
DEPENDENT ON INITIAL
VANE POSITION
OIL PRESSURE CHECK
OIL PUMP ON
150 SEC.
(2.5 MIN)
"SYSTEM RUN"
"SYSTEM PRELUBE"
** "VANES CLOSING
BEFORE
SHUTDOWN"
"SYSTEM
COASTDOWN"
"SYSTEM
SHUTDOWN"
TIME IN SECONDS (MINUTES)
DISPLAY
MESSAGE
TIMING DIAGRAM –
CHILLERS EQUIPPED WITH FIXED SPEED OIL PUMP (STYLE C)
TIMING DIAGRAM –
CHILLERS EQUIPPED WITH
VARIABLE SPEED OIL PUMP
(STYLE D/E/F)
LD06501
LD06502
FIGURE 8 -
OPERATION SEQUENCE TIMING DIAGRAM (ELECTROMECHANICAL AND SOLID STATE
STARTER APPLICATIONS)
** Only applicable to the following shutdowns. When any of these shutdowns
are performed, the vanes are driven fully closed before the starter is
de-energized. When the vane motor switch closes (or 210 seconds from
start of vane closure have elapsed), the starter is de-energized.
1. Low Water Temperature; 2. Multi-Unit Sequence (TB4-9); 3. Remote/
Local Cycling (TB4-13); 4. Internal Time Clock; 5. Remote Stop (TB4-8);
6. Remote Stop (ISN serial port). Operator initiated Soft Shutdown (Flash
memory card version C.MLM.01.06.xxx and later or
C.MLM.04.02.xxx)
