Omega Engineering TX801MInput Range Programming Table, How to Use the Maths Function Formulae

TX801MInput Range Programming Table.

Always set OUTPUT range first, then INPUT range.

DIP switches and trimpots are accessed by removing the small rectangular lid on the top of the TX801M enclosure.

Notes: 1/ Switch status 1 = ON, 0 = OFF, X = DON'T CARE. 2/ All inputs must be of the same signal type.

3/ If using voltage inputs, short unused inputs to 'COM' (terminal 6).

	INPUT RANGE	S4-1	S4-2	S4-3	S4-4	S4-5	S4-6
	0~5V	0	0	0	0	1	1
Vin	0~10V	0	0	0	1	1	1
	1~5V	0	0	0	0	0	0
	2~10V	0	0	0	1	0	0
Iin	0~20mA	1	1	1	0	1	1
	4~20mA	1	1	1	0	0	0

How to Use the Maths Function Formulae.

X, Y, and Z are taken as 0 to 1.0000, representing the full input range.

eg.	4.000mA	=	0.0000
	8.000mA	=	0.2500
	12.000mA	=	0.5000
	16.000mA	=	0.7500
	20.000mA	=	1.0000

The selected calculation is then performed on the inputs. The output is then SCALED so the resultant range is between 0 and 1.000. (The scaling factor is the factor the largest output must be scaled by to get the result = 1.) This 0 to 1.000 range represents the full output range, as set by the output DIP switches.

INPUT RANGES		MATHS FUNCTION					OUTPUT RANGES
Input	IR	Maths Funct. (Output =)	MF	Maths Funct. (Output =)	MF		Voltage	OR	Current	OR
0~5V	A	X + Y	1	Sample and Hold		26	0~500mV	A	0~1mA	1
0~10V	B	X + Y + Z	2	Tare		27	0~1V	B	0~2mA	2
1~5V	C	X - Y	3			28	0~2V	C	0~5mA	3
2~10V	D	X - Y + Z	4	%RH, X=Dry, Y=Wet		29	0~3V	D	0~10mA	4
0~20mA	E	X × Y	5	User Defined Curve		30	0~4V	E	0~16mA	5
4~20mA	F	X × Y × Z	6	Program User Defined Curve		31	0~5V	F	0~20mA	6
		X / Y	7	Pressure Comp. Steam Flow		32	0~6V	G	1~5mA	7
		( X / Y ) × Z	8	Program PCSF Values		33	0~8V	H	2~10mA	8
		X^(1/2) {Square root X}	9	Hi Select of X or Y		34	0~10V	I	4~20mA	9
		X^(1/3) {Cube root X}	10	Lo Select of X or Y		35	0~12V	J	-1~1mA	10
		X^(3/2)	11			36	1~5V	K	-2~2mA	11
		X2	12			37	2~10V	L	-5~5mA	12
		X3	13			38	-1~1V	M	-10~10mA	13
		ln X {Natural log X}	14			39	-2~2V	N	-20~20mA	14
		log X {Base 10 log X}	15			40	-5~5V	O
		(X2 + Y2)^(1/2)	16			41	-10~10V	P
		( X + Y ) / 2	17			42	-12~12V	Q
		( X + Y + Z ) / 3	18			43
		X^1.569 {Parshall Flume}	19			44
		X^(5/2) {V Notch Weir}	20			45
		X {ie Xin=Xout}	21			46
		Inverse of X {ie.(100-X)%}	22			47
		X / ( X + Y )	23			48
		Antilog X	24			49
		( X - Y ) x Z	25			50
Special Input	Z						Special Output Range			Z
		Note: Hi Select and Lo Select available from S/No. 9844000 onwards.
			POWER SUPPLY							PS
		High Voltage Power Supply: 70~270Vac and 80~380Vdc								H
		Mid Voltage Power Supply: 24~80Vac and 20~90Vdc								M
		Low Voltage Power Supply: 8~30Vac and 8~30Vdc								L

Note: Power supply H is field selectable for M, and M for H. Power supply L must be ordered separately.

Examples of Using the Maths Function Formulae.

NOTE: For these examples inputs and outputs are configured as 4~20mA.

Examples		Inputs (mA)			Converted Value			Resultant	Scaling	Output
		X	Y	Z	X	Y	Z	Value	Factor	Signal (mA)
		4	4	-	0.0	0.0	-	0		4.00
X + Y	12		12	-	0.5	0.5	-	1	.5	12.00
	20		20	-	1.0	1.0	-	2		20.00

Examples of Input Connection.

	Transducer With Current
−		or Voltage Output.	+	3	Xin	Input	Output	-	2
								~
	− Transducer With Current
−		Transducer With Current		4	Yin			+	1
		or Voltage Output.	+
		or Voltage Output.	+
				5	Zin		Power Supply	-	8
					COM			~
				6					7
								+

1600V Isolation

	Eg. Indicator, 2100-M,
-
+	etc. With Voltage or
	Current Input.
~	AC/DC Power
-

~Source.

+

Terminations.

Output	1	+Ve
	2	-Ve
Input	3	Xin
	4	Yin
	5	Zin
	6	COM
P/S	7	~AC/+DC
	8	~AC/-DC

Plan View of TX801M Adjustments. TX801M H1 Power Supply Link Settings.

		4	4	4	0.0	0.0	0.0		0		4.00
X x Y x Z		12	12	12	0.5	0.5	0.5		0.0156	1	4.25
	16		16	16	0.75	0.75	0.75	0.4219			10.75
		20	20	20	1.0	1.0	1.0		1		20.00
		4	-	-	0.0	-	-		0		4.00
		8	-	-	0.25	-	-		0.5		12.00
X^(1/2)		12	-	-	0.5	-	-		0.7071	1	15.31
		16	-	-	0.75	-	-		0.8660		17.86
	20		-	-	1.0	-	-	1			20.00
		4	-	-	0.0	-	-		0		4.00
		8	-	-	0.25	-	-		0.0625		5.00
X2		12	-	-	0.5	-	-		0.25	1	8.00
		16	-	-	0.75	-	-		0.5625		13.00
		20	-	-	1.0	-	-		1		20.00

OUTPUTPROGRAMMING

OFF			ON	ON
Gain = 1			Gain = 0	1
Gain = 2			Gain = 0	2
Gain = 4			Gain = 0	3
Gain = 8			Gain = 0	4
Gain =16			Gain = 0	5
Gain =32			Gain = 0	6
	25 Turn Trimpot
	for Span ±10%			Span
	25 Turn Trimpot
	for Zero ±10%			Zero
OFF			ON	ON
0% Offset			+20% Offset	1
0% Offset			-50% Offset	2
Current O/P		Voltage O/P		3
Current O/P		Voltage O/P		4

S1-Span	S4-Input
S	COMMS
Z
S2-Function

INPUT PROGRAMMING

OFF ON

6}20% Offset }No Offset.

41/2 Scale in Full Scale in

3Zin=Voltage Zin=Current

2Yin=VoltageYin=Current

1Xin=VoltageXin=Current

ON

	RESET	6	Refer to
		5	'MATHSFUNCTION
Maths-S3		4	PROGRAMMINGTABLE'
	ON
		3	for Dip Switch Settings
		2
		1

	WARNING: High Voltages Maybe Present.
	Only adjust link with power disconnected.
	Power Supply Link Settings
H1	Power Supply Voltage Range

HLink for High: 70~270Vac / 80~380Vdc

M Link for Mid: 24~80Vac / 20~90Vdc

Notes:

1/ H1 is approx 4cm (1½") behind the 'S' trimpot. 2/ Exceeding voltage ranges may damage the unit.

3/ Ensure the enclosure label is correctly labelled for the link position.

4/ Adjust H1 jumper with a pair of needle nose pliers.

5/ Low Voltage Power Supply version is fixed, and has no link. This must be ordered separately.

H 1	M I D	H I G H
M
H		M
S 1 - SP A N S Z S 2 - F U N C T		H