AZ3s USER MANUAL
ST.TEC.054
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4.4.
Analogic set point
The AZ3s drive has two configurable analog inputs.
4.4.1.
P
ARAMETERS
Variable
Type
Code
Unit
Default
Range
Can open
address
Modbus logical
address
User range 1
FLOAT
AI1
-
1000
-1.0E9÷1.0E9
INDEX
SUB
2045h
02h
HR
249
250
Offset 1
FLOAT
AI2
-
0
-1.0E9÷1.0E9
INDEX
SUB
2045h
03h
HR
251
252
Zero threshold 1
UNS16
AI3
-
5
0÷65535
INDEX
SUB
2045h
04h
HR
253
User range 2
FLOAT
AI4
-
1000
-1.0E9÷1.0E9
INDEX
SUB
2046h
02h
HR
254
255
Offset 2
FLOAT
AI5
-
-500
-1.0E9÷1.0E9
INDEX
SUB
2046h
03h
HR
256
257
Zero threshold 2
UNS16
AI6
-
1
0÷65535
INDEX
SUB
2046h
04h
HR
258
Selector 1
UNS8
AI7
-
2
0÷255
INDEX
SUB
2045h
01h
HR
259L
Selector 2
UNS8
AI8
-
4
0÷255
INDEX
SUB
2046h
01h
HR
259H
AI Mult 1
FLOAT
AI9
-
0.1
-1.0E9÷1.0E9
INDEX
SUB
-
HR
260
261
AI Mult 2
FLOAT
AI10
-
0.9
-1.0E9÷1.0E9
INDEX
SUB
-
HR
262
263
AI filter time
UNS32
AI11
0.1*ms
10
0÷200000
INDEX
SUB
-
HR
264
265
SET POINT SELECTOR
S16
DD3
-
0
0÷10
INDEX
SUB
2038h
HR
63
4.4.2.
C
ONFIGURATIONS
To activate the analog input module, SET POINT SELECTOR must be set to 1, or to 3 for the combined
use with digital inputs.
The adaptation of the analogic inputs in order to generate a set point is done through the following
three steps.
Inputs are filtered through the following equation:
𝐹𝑖𝑙𝑡𝑒𝑟𝑒𝑑 𝑉𝑎𝑙𝑢𝑒 = 𝑁𝑒𝑤 𝑟𝑒𝑎𝑑𝑒𝑑 𝑣𝑎𝑙𝑢𝑒 ∗ 𝐴𝐼𝑀𝑢𝑙𝑡1 + 𝑂𝑙𝑑 𝑣𝑎𝑙𝑢𝑒 ∗ 𝐴𝐼𝑀𝑢𝑙𝑡2
It is also possible to configure how many samples are usefull for set point calculation through AI
filter time. In AI filter time must be inserted the set point update time in tenths of millisecond.
It is recommended to keep a minimum value of at least 10.
Inputs are adapted to desired user range through the following equation:
𝑆𝑒𝑡𝑝𝑜𝑖𝑛𝑡 = 𝐹𝑖𝑙𝑡𝑒𝑟𝑒𝑑𝑉𝑎𝑙𝑢𝑒 ∗
1
𝐴𝐷𝐶 𝑟𝑎𝑛𝑔𝑒
∗ 𝑈𝑠𝑒𝑟 𝑟𝑎𝑛𝑔𝑒 + 𝑜𝑓𝑓𝑠𝑒𝑡