Carrier XRV, 19XR specifications CVC/ICVC Operation and Menus Fig

CVC/ICVC Operation and Menus (Fig. 14-20)

GENERAL

For morePRIMARYinformationSTATUS	on theCOMPRESSORmenu structures,DATE referTIMEto
Fig. 17. MESSAGE	ON TIME

•	The CVC/ICVC display automatically reverts to the
	default screen after 15 minutes if no softkey activity
	takes place and if the chiller is not in the pumpdown
	mode (Fig. 14).
• If a screen other than the default screen is displayed on
	the CVC/ICVC, the name of that screen is in the upper
	right corner (Fig. 15).
• The CVC/ICVC may be set to display either English or
	SI units. Use the CVC/ICVC configuration screen
	(accessed from the Service menu) to change the units.
	See the Service Operation section, page 45.
•	Local Operation — The PIC II can be placed in local

SECONDARY STATUS MESSAGE

ALARM LIGHT (ILLUMINATED WHEN POWER ON)

•BLINKS CONTINUOUSLY ON FOR AN ALARM

•BLINKS ONCE TO CONFIRM A STOP

STOP BUTTON

•HOLD FOR ONE SECOND TO STOP

RUNNING TEMP CONTROL				01-01-95 11:48
LEAVING CHILLED WATER				28.8 HOURS
CHW IN	CHW OUT				EVAP REF
55.1		44.1		40.7
CDW IN	CDW OUT				COND REF
85.0		95.0		98.1
OIL PRESS	OIL TEMP				AMPS %
21.8	132.9			93
CCN	LOCAL		RESET		MENU

operating mode by pressing the LOCAL softkey. The

PIC II then accepts commands from the CVC/ICVC only

and uses the Local Time Schedule to determine chiller

start and stop times.

• CCN Operation — The PIC II can be placed in the CCN

operating mode by pressing the CCN softkey. The PIC

II then accepts modifications from any CCN interface or

module (with the proper authority), as well as from the

CVC/ICVC. The PIC II 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 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 CVC/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 CVC/ICVC default screen will freeze (stop updating) at the time of alarm. The freeze en- ables 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 RESET softkey), the default CVC/ICVC screen will return to normal operation.

CVC/ICVC MENU ITEMS — To perform any of the opera- tions described below, the PIC II must be powered up and have successfully completed its self test. The self test takes place au- tomatically, after power-up.

Press the MENU softkey to view the list of menu struc- tures: STATUS , SCHEDULE , SETPOINT , and

SERVICE .

•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 CVC/ICVC Configuration screens.

SOFT KEYS	MENU
EACH KEY'S FUNCTION IS
	LINE
DEFINED BY THE MENU DESCRIPTION
ON MENU LINE ABOVE

Fig. 14 — CVC/ICVC Default Screen

19XR_IISERVICE

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 DEVICE

CVC CONFIGURATION

Fig. 15 — CVC/ICVC Service Screen

Press the softkey that corresponds to the menu structure to be viewed: STATUS SCHEDULE , SETPOINT , or SERVICE . To view or change parameters within any of these menu structures, use the NEXT and PREVIOUS softkeys to scroll down to the desired item or table. Use the SELECT softkey to select that item. The softkey choices that then appear depend on the selected table or menu. The softkey choices and their functions are described below.

BASIC CVC/ICVC OPERATIONS (Using the Soft- keys) — To perform any of the operations described below, the PIC II must be powered up and have successfully complet- ed its self test.

15