Carrier 48/50AJ specifications Appendix C VFD Information, Table B VFD Configurations, Over Ride

APPENDIX C — VFD INFORMATION (cont)

Table B — VFD Configurations

PARAMETER GROUP	PARAMETER TITLE	PARAMETER INDEX	CARRIER DEFAULT
	LANGUAGE	9901	ENGLISH
	APPLIC MACRO	9902	USER 1
	MOTOR CTRL MODE	9904	SCALAR: FREQ
Start-Up Data	MOTOR NOM VOLT	9905	460v
	MOTOR NOM CURR	9906	*TBD*
	MOTOR NOM FREQ	9907	60 Hz
	MOTOR NOM SPEED	9908	1750 rpm
Start/Stop/Dir	EXT1 COMMANDS	1001	DI-1
	DIRECTION	1003	REVERSE
Analog Inputs	MINIMUM AI1	1301	20.0 %
	MAXIMUM AI1	1302	100.0 %
	RELAY OUTPUT 1	1401	STARTED
Relay Outputs	RELAY OUTPUT 2	1402	RUN
	RELAY OUTPUT 3	1403	FAULT (-1)
System Controls	RUN ENABLE	1601	NOT SELECTED
	START ENABLE 1	1608	DI-4
	OVERRIDE SEL	1701	DI-3
	OVERRIDE FREQ	1702	60 Hz
OVER RIDE	OVERRIDE SPEED	1703	1750 rpm
	OVER PASS CODE	1704	ENTERED
	OVERRIDE	1705	ON
	STOP FUNCTION	2102	RAMP
Accel/Decel	ACCELER TIME 1	2202	30.0s
	DECELER TIME 1	2203	30.0s
MOTOR	SWITCHING FREQ	2606	8 kHz

VFD Operation — The VFD keypad is shown in Fig. B. The function of SOFT KEYS 1 and 2 change depending on what is displayed on the screen. The function of SOFT KEY 1 matches the word in the lower left-hand box on the display screen. The function of SOFT KEY 2 matches the word in the lower right-hand box on the display screen. If the box is empty, then the SOFT KEY does not have a function on that specific screen. The UP and DOWN keys are used to navigate through the menus. The OFF key is used to turn off the VFD. The AUTO key is used to change control of the drive to automatic control. The HAND key is used to change control of the drive to local (hand held) control. The HELP button is used to access the help screens.

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Fig. B — VFD Keypad

START UP WITH ASSISTANT — Initial start-up has been performed at the factory. To start up the VFD with the Start-Up Assistant or reset the VFD with the Carrier defaults, perform the following procedure:

1.Select MENU (SOFT KEY 2). The Main menu will be displayed.

2.Use the UP or DOWN keys to highlight ASSISTANTS on the display screen and press ENTER (SOFT KEY 2).

3.Use the UP or DOWN keys to highlight Carrier Assistant and press SEL (SOFT KEY 2).

4.The Carrier Assistant will ask questions to determine the correct parameters for the VFD. Select the desired values and press SAVE (SOFT KEY 2) after every change. The process will continue until all the parameters are set.

a.The Carrier Assistant will ask “Is this an Air Handler or Rooftop?” Select “Rooftop.”

b.The Carrier Assistant will ask “Is this a High E or Premium E motor?” Select the correct efficiency type.

c.If the VFD can be used with two different size (HP) motors, then the Carrier Assistant will ask the user to choose the proper HP. Select the correct motor horsepower.

START UP BY CHANGING PARAMETERS INDIVIDU- ALLY — Initial start-up is performed at the factory. To start up the VFD with by changing individual parameters, perform the following procedure:

1.Select MENU (SOFT KEY 2). The Main menu will be displayed.

2.Use the UP or DOWN keys to highlight PARAMETERS on the display screen and press ENTER (SOFT KEY 2).

3.Use the UP or DOWN keys to highlight the desired parameter group and press SEL (SOFT KEY 2).

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