![ABB Advant Controller 450 User Manual Download Page 429](http://html.mh-extra.com/html/abb/advant-controller-450/advant-controller-450_user-manual_3016429.webp)
Advant
®
Controller 450 User’s Guide
Section 5.5.11 Adjustment of Analog Input and Output Boards
3BSE 002 415R701 Rev A
5-77
5.5.11.2 Adjustment of A/D Converter
Adjustment for Boards DSAI 130, DSAI 133 and DSAX 110
The A/D converter is adjusted in three operations:
•
Adjustment of zero point Z (automatically adjusted on DSAI 133)
•
Adjustment of full scale value G
•
Adjustment of symmetry S (only DSAI 130, normally unnecessary).
The adjustments are performed in the same order as given here (zero point, full scale value and
symmetry, if relevant).
Adjust AI units which are intended for voltage or current signals with the help of a voltage
reference. If all inputs are jumpered for current, and none are unused so that the solder jumper
can be clipped, you can use a voltage reference which can give at least 20.5 mA for a channel
jumpered for a current shunt.
In this case, set CONV_PAR on the data base element to -20..20 mA, 0..20 mA or
-5..5 V, and half the reference voltage is used instead of the values specified below as an internal
gain multiplied by 2 is used.
An input and corresponding data base element are selected for the adjustment. If an unused
input is selected, ensure that ACT is set to 1 and afterward reset to 0. Select a signal with
CONV_PAR=-10..10 V (exception in accordance with the above) or change CONV_PAR in the
data base element concerned.
Make the updating continuous by setting DEADB=-1 and FILTER_P=0 (note previous values
so that they can be reset after the adjustment).
The reference voltage for the adjustment is connected to the connection unit and the measured
value is read with an engineering station.
The potentiometers Z,G and S are located in the lower half of the front of the board.
Adjustment of the Zero Point on the A/D Converter
Adjust the reference voltage to the corresponding, a half step for the A/D converter:
DSAI 130
12 bits
1/2 bit = 1.25 mV
DSAI 133, DSAX 110
12 bits
Automatic adjustment of zero.
Adjust the potentiometer Z on the board front, reading the unscaled value in the data base at the
same time.
Use the command GETAB on the engineering station to read the unscaled value continuously:
GETAB
IV= AIX.Y:16 Insert value, AI= Analog Input, X = board number, Y = signal number
(16 is the property number of the unscaled value).
GVD
(Get Value Dynamically)
Example:
IV=AI1.1:16
will show unscaled value of first input of first board.
The zero point is correctly adjusted when the value varies between zero and a value
corresponding to an increment for the A/D converter, 128 for DSAI 110 and 8 for DSAI 130.
Summary of Contents for Advant Controller 450
Page 1: ...Advant OCS with Master software GYDQW RQWUROOHU User s Guide 3BSE 002 415R701 Rev A ...
Page 26: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xvi ...
Page 30: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xx ...
Page 488: ... GYDQW RQWUROOHU 8VHU V XLGH SSHQGL DUGZDUH 0RGXOHV A 48 3BSE 002 415R701 Rev A ...
Page 508: ...Advant Controller 450 User s Guide Appendix D Item Designations D 12 3BSE 002 415R701 Rev A ...
Page 518: ...Advant Controller 450 User s Guide Appendix F Load Calculation F 4 3BSE 002 415R701 Rev A ...
Page 522: ...Advant Controller 450 User s Guide Appendix G Memory Calculation G 4 3BSE 002 415R701 Rev A ...
Page 528: ...Advant Controller 450 User s Guide Appendix H Halt Codes H 6 3BSE 002 415R701 Rev A ...
Page 562: ...Advant Controller 450 User s Guide Index iv 3BSE 002 415R701 Rev A ...
Page 563: ......
Page 564: ...3BSE 002 415R701 Rev A March 2000 ...