Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 040-420 specifications 4-20mA Cooling Temperature Reset

Models: 040-420

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Fig. 7 - 4-20 mA Cooling Temperature Reset

16

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6

0

0

2

4

6

8

IO

12

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16

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2 0

RESET REFERENCE SIGNAL (4 - 20 MA INPUT)

Fig. 7 - 4-20 mA Cooling Temperature Reset

Example 7A - Using Demand Limit (First Log On as Shown in Table 11)

Example 7B - Using Demand Limit (4-20 mA) (First Log On As Shown in Table 11)

KEYPAD DISPLAY

ENTRY RESPONSE

FLD CFG

ERTYP 0

LSTYP 0

LSTYP 1

DEMAND

DLSl 100

DLSl 60

DLS2 100

DLS2 40

To Disable Demand Limit:

COMMENTS

Field configuration sub- function of service function

Scroll past other elements in the subfunction

Loadshed is not enabled

Loadshed is now enabled for 2-stage switch control

Demand Limit set points subfunction of set point function

Loadshed 1 currently set at 100%

Loadshed reset to 60%

Loadshed 2 currently set at 100%

Loadshed 2 reset to 40%

KEYPAD				DISPLAY				COMMENTS
	ENTRY			RESPONSE				COMMENTS
	ENTRY			RESPONSE
ppiq				FLD CFG		Field	configuration		subfunction
ppiq				FLD CFG		of service function
						of service function
	t			ERTYP 0		Scroll past other elements in
	t			ERTYP 0		the	subfunction
0						the	subfunction
	Cl			LSTYP 0		Loadshed		is not enabled
	Cl
	q ‘nENTR			LSTYP	2	Loadshed		is now enabled
	q ‘nENTR			LSTYP	2	for 4-20 mA signal control
	MH			DEMAND		Demand		Limit set	points
				DMAX	100	Maximum demand limit is 100%
				DMAX	90	Maximum demand limit is 90%
				RMAX 20		Maximum		demand	limit
				RMAX 20		reference is 20 mA
						reference is 20 mA
				RMAX	15	Maximum		demand	limit
				RMAX	15	reference is 15 mA
						reference is 15 mA
				DMIN	0	Minimum demand limit is 0%
				DMIN	20	Minimum demand limit is 20%
				RMIN	4	Minimum		demand	limit
				RMIN	4

KEYPAD		DISPLAY			COMMENTS
ENTRY		RESPONSE			COMMENTS
ENTRY		RESPONSE
		FLD CFG			Field configuration sub-
					Field configuration sub-
					function	of servicefunction
					function	of servicefunction
		ERTYP 0			Scroll past other elements
		ERTYP 0		I	in the	subfunction
					in the	subfunction

		LSTYP	1		Loadshed	is enabled for
		LSTYP	1		2-stage switch control
					2-stage switch control
		LSTYP	0		Loadshed	is now disabled

		reference is 4	mA
	RMlN 6	Minimum demand limit
		reference is 6	mA

NOTE: Select 3 for Carrier comfort Network (CCN) load limiting Select 4 for CCN demand limiting.

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Image 43

Carrier 040-420 specifications 4-20mA Cooling Temperature Reset

Contents

040-420 CONTENTSSAFETY CONSIDERATIONS ACCESSORY UNLOADER INSTALLATIONMAJOR SYSTEM COMPONENTS GENERALTable 1 - Unit Sizes and Modular Combinations DsroiLv Table 3 - Thermistor and Transducer Locations Table 2 - LOCAL/ENABLE-STOP-CCNSwitch Positions and Operation Compressor Protection Control Module CPCSTable 4A - Capacity OPERATION DATAControl Steps, 060A\~**Hz Table 4A - Capacity Control Steps, 040-070cantoy&ya “‘“G Hzylf,t Table 4A - Capacity Control Steps, 040-070cantA4l&pi’& A;.$Aiti 08Aqy ,yPage A;;:;H Bitt AlttBitt Wtf2Z$’$-t&Z3 A;;;#Amrox A’tt“A:tkA2’i3BI~ ~,;~~J“B’p Page hwrox B1 tt AlPtlBl’“Att l”l’ Bitty&t3g A2.pBitt ~l*;;# B;$+A&t$$V ‘-J-&W~’ BB’!J~i~~~~ CKEL 86p Hz Page hwrox Table 4D - Capacity Control Steps, 225, 250,2804G SEQUENCE UNITLOAC JG SEQUENCEf& Hz Table 5 - Condenser Fan Sequence Table 5 - Condenser Fan Sequence cant Fig. 3 - Keypad and Display Module Keypad and Display Module Also Called HSIOTable 6 - Keypad and Display Module Usage Table 7 - Functions and Subfunctions Table 8 - Accessing Functions and SubfunctionsTable 9 - Keypad Directory STATUS Table 9 - Keypad Directory cant STATUS cant DISPLAY TESTTable 9 - Keypad Directory cant STATUS cant SUBFUNCTION 10 OUTPUTSSCHEDULE Table 9 - Keypad Directory cant TEST cantTable 9 - Keypad Directory SCHEDULE cant SERVICEct l Table 9 - Keypad Directory cant SERVICE cordCltt at Clt clSET POINT Table 9 - Keypad Directory cantp-jq Example 1 -Reading Alarm CodesTable 10 - Operationat and Mode Display Codes Example 2 - Reading Current Operating Modes Example 4 - Reading and Changing Example 3 -Using Test FunctionChilled Water Set Point Fig. 4 - Cooling Return Water Reset Example 5 -Using Return Water Temperature Resetf73c= -- / Fig. 5 - Cooling External Temperature Reset Example 6 - Changing Reset Type8- 16 ? _ ‘-+p Table 11 -Service FunctionsFig. 7 - 4-20mA Cooling Temperature Reset Fig. 8 - 4-20mA Example 8 - Setting Time of Day and Day of WeekDemand Limiting Table 13 - Adjustable Field Configurations Table 12 - Factory Configuration KeystrokesExample 9 continued next page Example 9 - Using the Schedule FunctionFig. 9 - Sample Time Schedule Example 9 - Using the Schedule Function cant‘EYo Example 10 - Holiday Schedule FunctionTypical Stoppage Faults and Reset Types TROUBLESHOOTINGComplete Unit Stoppage - Complete unit stop Table 14 - Alarm Codes Possible causes of failure Code 30 Reset input failure 4 to 20 mA ’ Sl Fig. IOA - 24-VSafety Circuit Wiringi2G7 CPCSIlEO2 TNANZ24VAC 32MPTransformer LEGENDLow Voltage PlugC G F EXV Driver Module, DSIO EXV 1 Electronic Expansion ValveFig. 11 - Electronil c Expansion Valve EXV Fig. 12 - EXV Cable Connections toCircuit A -Thermistor T7, Suction Pressure Trans T - Thermistor Number LEGEND D P T - Discharge Pressure TransducerOil Pressure Transducer ppTT - Suction Pressure TransducerWATER-SIDETEMPERATURE SENSOR Tl, T2, -ALL UNITS Fig. 14 - Thermistor LocationsCircuits A and B, Lead Compressor Only Fig. 15 - ThermistorsFig. 16 - Pressure Transducer TEMP:;fTURE Page Page Control Modules Selector Switch LocationsFig. 18 - Module Address fL.w--6%2 Fig. 19 - Sensor Bus Wiring Communications1 $i 1 !;i %o-693Fig. 22 - 4 In/4 Out Module SIO COMMTable TroubleshootingTable 18 - Standard and Accessory Unloaders ACCESSORY UNLOADER INSTALLATIONInstallation ‘. \ Fig. 23 - Accessory Unloader Control Wiring 69080-110SO/SO Hz and 130 60 Hz 13 6 y3.Wire in the solenoid valves k367 WIRINGFig. 26B - Demand Limit - Two External Switch 4368Fig. 28 - Demand Limit - 4-20mA Signal Fig. 27 - Demand Limit - 4-20mA SignalExternally Powered Fig. 30 - Remote Reset from 4-20mA Signal~,. $$ InstallationFig. 35 -Remote Alarm u2 TB-5scribed in m H and r;lFl sections on page Page Copyright 1994 Carrier Corporation