Analog Input/Output - INVT DA180-S2R8SG0 Operation Manual

DA180 series basic AC servo drive
Data size
P3.16
Modbus address

6.4.2 Analog input/output

P3.20 Offset of AI 1
This parameter is used to adjust analog input 1 to improve the effective accuracy of the AI.
Due to reasons such as the zero drift of analog input devices or induced voltage in the ambient
environment, the actual analog input value may deviate from the expected value, and such
deviation can be eliminated by setting the offset of AI.
See the following figure for the analog input offset voltage:
Example: After the command terminal of drive analog input 1 is connected to the analog reference
signal, even if the analog reference signal is 0, the voltage of analog input 1, (specified by R1.05),
is displayed as 0.02V on the panel, P3.20 must be set to 0.02 at this time. The drive automatically
subtracts 0.02V from the analog input value received. If the voltage of analog input 2, displayed by
the panel, is -0.02V, P3.20 must be set to -0.02. The drive automatically adds 0.02V to the analog
input value received, and the value displayed on the panel changes as well.
Data size
P3.20
Modbus address
P3.21
This parameter specifies the time constant of the first-order low-pass filter corresponding to analog
input 1. Setting this parameter can smooth the command change when the analog input changes
sharply.
See the following figure:
Setting range
-10.000–10.000
Sampling voltage (V)
Before setting
-10V
Setting range
Filter of AI 1
16bit
1632, 1633 CANopen address
Default
0.000
After setting
10V
P3.20
P3.23
32bit
1640, 1641 CANopen address
Default
0.0–1000.0 1.0
-129-
Data format
Unit
V
Actual voltage (V)
Data format
Unit
ms
Function codes
DEC
0x2310, 0x00
Applicable
mode
P S T
DEC
0x2314, 0x00
Applicable
mode
P S T