Specifications

18
ALARMS AND ALERTS — An alarm shuts down the com-
pressor. An alert does not shut down the compressor, but it no-
tifies the operator that an unusual condition has occurred. An
alarm (*) or alert (!) is indicated on the STATUS screens on the
far right field of the ICVC display screen.
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 table.
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.
The STATUS tables will show the updated information. Once
all alarms have been cleared (by pressing the soft-
key), the default ICVC screen will return to normal operation.
ICVC MENU ITEMS — To perform any of the operations
described below, the PIC II must be powered up and have suc-
cessfully completed its self test. The self test takes place auto-
matically, 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 and Ice Build time
schedules.
• The SETPOINT menu allows set point adjustments, such
as the entering chilled water and leaving chilled water set
points.
• The SERVICE menu can be used to view or modify
information on the Alarm History, Control Test, Control
Algorithm Status, Equipment Configuration, ISM Starter
Configuration data, Equipment Service, Time and Date,
Attach to Network Device, Log Out of Network Device,
and ICVC Configuration screens.
For more information on the menu structures, refer to
Fig. 18.
Press the softkey that corresponds to the menu structure to
be viewed: , , or
. To view or change parameters within any of these
menu structures, use the and softkeys to
scroll down 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 below.
BASIC ICVC OPERATIONS (Using the Softkeys) —
To perform any of the operations described below, the PIC II
must be powered up and have successfully completed its self
test.
• Press to leave the selected decision or field with-
out saving any changes.
• Press to leave the selected decision or field and
save changes.
• Press to scroll the cursor bar down in order to
highlight a point or to view more points below the cur-
rent screen.
• Press to scroll the cursor bar up in order to
highlight a point or to view points above the current
screen.
• Press to view the next screen level (high-
lighted with the cursor bar), or to override (if allowable)
the highlighted point value.
• Press to return to the previous screen level.
• Press or to change the high-
lighted point value.
TO VIEW STATUS (Fig. 17) — The status table shows the
actual value of overall chiller status such as CONTROL
MODE, RUN STATUS, AUTO CHILLED WATER RESET,
and REMOTE RESET SENSOR.
1. On the menu screen, press to view the list of
point status tables.
CONTROL TEST
CONTROL ALGORITHM STATUS
EQUIPMENT CONFIGURATION
ISM (STARTER) CONFIGURATION DATA
EQUIPMENT SERVICE
TIME AND DATE
ATTACH TO NETWORK DEVICE
LOG OUT OF DEVICE
ICVC CONFIGURATION
ALARM HISTORY
19XR_II
SERVICE
Fig. 16 — ICVC Service Screen
RESET
MENU
STATUS
SCHEDULE
SETPOINT
SERVICE
STATUS
SCHEDULE
SETPOINT
SERVICE
NEXT
PREVIOUS
SELECT
QUIT
ENTER
NEXT
PREVIOUS
SELECT
EXIT
INCREASE
DECREASE
STATUS