23
ICVC Operation and Menus (Fig. 24-30)
GENERAL
• The ICVC display automatically reverts to the default
screen after 15 minutes if no softkey activity takes place
(Fig. 24).
• If a screen other than the default screen is displayed on the
ICVC, the name of that screen is in the upper right corner
(Fig. 25).
• The ICVC may be set to display either English or SI units.
Use the ICVC CONFIGURATION screen (accessed from
the SERVICE menu) to change the units. See the Service
Operation section, page 59.
• Local Operation — The PIC III can be placed in local
operating mode by pressing the softkey. The
PIC III then accepts commands from the ICVC only and
uses the Local Time Schedule to determine chiller start
and stop times.
• CCN Operation — The PIC III can be placed in the
CCN operating mode by pressing the softkey.
The PIC III then accepts modifications from any CCN
interface or module (with the proper authority), as well
as from the ICVC. The PIC III uses the CCN Time
Schedule to determine start and stop times.
ALARMS AND ALERTS — An alarm shuts down the com-
pressor. An alert does not shut down the compressor, but it
notifies the operator that an unusual condition has occurred. An
alarm (*) or alert (!) is indicated in the STATUS column on the
right side of the MAINSTAT display screen. See Fig. 26.
Alarms are indicated when the control center alarm light (!)
flashes. The primary alarm message is displayed on the default
screen. An additional, secondary message and troubleshooting
information are sent to the ALARM HISTORY screen.
When an alarm is detected, the ICVC default screen will
freeze (stop updating) at the time of alarm. The freeze enables
the operator to view the chiller conditions at the time of alarm.
Additional information is stored in the VFD_HIST screen. The
STATUS tables will show the updated information. Once all
alarms have been cleared (by pressing the softkey),
the default ICVC screen will return to normal operation.
\\\
ICVC MENU ITEMS — To perform any of the operations
described below, the PIC III must be powered up and have
successfully completed its self test. The self test takes place
automatically, after power-up.
Press the softkey to view the list of menu struc-
tures: , , , and
.
• The STATUS menu allows viewing and limited calibra-
tion or modification of control points and sensors, relays
and contacts, and the options board.
• The SCHEDULE menu allows viewing and modification
of the local and CCN Time Schedules.
• The SETPOINT menu allows set point adjustments, such
as the ENTERING CHILLED LIQUID and LEAVING
CHILLED LIQUID set points.
• The SERVICE menu can be used to view or modify
information on the ALARM HISTORY, ALERT HIS-
TORY, CONTROL TEST, CONTROL ALGORITHM
STATUS, EQUIPMENT CONFIGURATION, VFD
CONFIG DATA, EQUIPMENT SERVICE, TIME
AND DATE, ATTACH TO NETWORK DEVICE,
LOG OUT OF DEVICE, and ICVC CONFIGURA-
TION screens.
For more information on the menu structures, refer to
Fig. 27 and 28.
Press the softkey that corresponds to the menu structure to
be viewed: , , , or
. To view or access parameters within any of these
menu structures, use the and softkeys
to scroll to the desired item or table. Use the soft-
key to select that item. The softkey choices that then appear de-
pend on the selected table or menu. The softkey choices and
their functions are described in the section Basic ICVC Opera-
tions beginning on page 24.
MANUALLY STOPPED - PRESS
CCN OR LOCAL TO START
11-22-04 00:09
15.2 HOURS
CHL IN CHL OUT EVAP REF
CDL IN CDL OUT COND REF
OIL PRESS OILTEMP % AMPS IN
STATUS SCHEDULE SETPOINT SERVICE
59.3 58.4 62.1
76.1 85.2 84.4
–0.5 130.6 0.0
PRIMARY STATUS
MESSAGE
COMPRESSOR
ON TIME
DATE TIME
SOFT KEYS
MENU
LINE
EACH KEY'S FUNCTION IS
DEFINED BY THE MENU DESCRIPTION
ON MENU LINE ABOVE
ALARM LIGHT
(ILLUMINATED
WHEN POWER ON)
STOP BUTTON
•
HOLD FOR ONE
SECOND TO STOP
•
•
BLINKS CONTINUOUSLY
ON FOR AN ALARM
BLINKS ONCE TO
CONFIRM A STOP
SECONDARY
STATUS
MESSAGE
Fig. 24 — ICVC Default Screen
a23-1600
ALERT HISTORY
CONTROL TEST
CONTROL ALGORITHM STATUS
EQUIPMENT CONFIGURATION
VFD CONFIG DATA
EQUIPMENT SERVICE
TIME AND DATE
ATTACH TO NETWORK DEVICE
LOG OUT OF DEVICE
ICVC CONFIGURATION
ALARM HISTORY
23XRPIC3
SERVICE
Fig. 25 — ICVC Service Screen
a23-1601
23XRPIC3 MAINSTAT
POINT STATUS
Reset
Tripout
0.0 min
No
Alarm
Stop CONTRL
Open C
0.0 ^F
50.0 °F
55.7 °F
Run Status
Start Inhibit Timer
Occupied?
System Alert/Alarm
Chiller Start/Stop
Remote Start Contact
Temperature Reset
Control Point
Chilled Liquid Temp
Control Mode
Fig. 26 — Example of MAINSTAT Screen
a23-1602
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