Eurotherm 590+ Series, Product Manual, Page: 115 / 308

Programming Your Application
6-5
590+ Series DC Digital Converter
ANALOG INPUTS
The analog input block is used to scale and
clamp the inputs for terminals A2 to A6.
Note: ANIN 2 (A3) is not reconfigurable and is connected directly to the SETUP PARAMETERS::
SPEED LOOP:: SETPOINTS:: RATIO 2 (A3) input, and the SETUP PARAMETER:: CURRENT
LOOP:: I DMD. ISOLATE switch. Refer to Chapter 15: “The Default Application” - Main
Block Diagram for more information.
Tag 493 allows access to the calibrated value of ANIN 2 (via an internal link for
example). To avoid interference with other drive functions the parameter RATIO 2 (A3)
must be set to zero, and the I DMD. ISOLATE parameter must be set to DISABLED, i.e.
selecting the Speed Loop as shown in the Main Block Diagram.
ANIN 2 (A3) is a direct input into the speed loop/current loop and is scanned
synchronously with the current loop (typically every 3.33ms) rather than every micro cycle
time (typically 7ms). Therefore it should be used for any signal whose response is critical
e.g. a trim input from a digital speed and position locking system.
MMI Menu Map
1
SYSTEM
2
CONFIGURE I/O
3
ANALOG INPUTS
4
ANIN 1 (A2)
4
ANIN 2 (A3)
4
ANIN 3 (A4)
4
ANIN 4 (A5)
4
ANIN 5 (A6)
CALIBRATION
MAX VALUE
MIN VALUE
DESTINATION TAG
Analog Input 1
–
OUTPUT [246]
–
100
–
[230] CALIBRATION
–
100.00 %
–
[231] MAX VALUE
–
-100.00 %
–
[232] MIN VALUE
–
– ANIN 1 (A2) [ 50] – 0.00 VOLTS
Analog Input 2
1.0000
–
[233] CALIBRATION
–
100.00 %
–
[234] MAX VALUE
–
-100.00 %
–
[235] MIN VALUE
–
–
ANIN 2 (A3) [ 51]
–
0.00 VOLTS
Analog Input 3
–
OUTPUT [249]
–
5
1.0000
–
[236] CALIBRATION
–
100.00 %
–
[237] MAX VALUE
–
-100.00 % – [238] MIN VALUE –
–
ANIN 3 (A4) [ 52]
–
0.00 VOLTS
Analog Input 4
–
OUTPUT [250]
–
48
1.0000
–
[239] CALIBRATION
–
100.00 %
–
[240] MAX VALUE
–
-100.00 % – [241] MIN VALUE –
–
ANIN 4 (A5) [ 53]
–
0.00 VOLTS
Analog Input 5
–
OUTPUT [247]
–
301
1.0000
–
[242] CALIBRATION
–
100.00 %
–
[243] MAX VALUE
–
-100.00 %
–
[244] MIN VALUE
–
– ANIN 5 (A6) [ 54] – 0.00 VOLTS
Parameter Descriptions
OUTPUT Range: 0 to 549
(DESTINATION TAG)
The destination Tag No. of the scaled analog input value. Refer to “Special Links”, page 6-1.
CALIBRATION Range: -3.0000 to 3.0000
The analog input scaling ratio.
MAX VALUE Range: -300.00 to 300.00 %
The maximum value of the scaled analog input.
MIN VALUE Range: -300.00 to 300.00 %
The minimum value of the scaled analog input
ANIN 1 (A2) to ANIN 5 (A6) Range: xxx.xx VOLTS
Refer to the DIAGNOSTICS function block description, page 6-22.