Inovance MD800 Series - Functions of AI Terminals

Function Applications
-474-
Table 4–25 Parameters of the power supply unit (A3 - I/O extension card 2)
Para. No. Name
Default
Value Range Description
A3-05
AI1 filter time
0.01s 0.00 to 10.00s
This parameter defines the AI input
filter time of extension card 2, which
is 0.1s by default. It is set based on
the response requirements and field
signal interference. Decrease this
filter time if fast response is required,
and increase it if field interference is
strong.
A3-06
AI2 filter time
0.01s 0.00 to 10.00s
A3-10
AI1 input
0
0: Voltage input
1: Current input
2: Temperature input
PT100
3: Temperature input
PT1000
4: Temperature input
KTY84-130
5: Temperature input
PTC-130
This parameter defines the AI input
function of extension card 2.
A3-10
AI2 input
0
Note the following:
● When the drive unit requires analog voltage inputs, set the power supply unit parameters
(parameters in the preceding tables) related to the hardware source defined by F4-25, F4-27, or F4-
29 to 0 (voltage input).
● When the drive unit requires analog current inputs, set the power supply unit parameters
(parameters in the preceding tables) related to the hardware source defined by F4-25, F4-27, or F4-
29 to 1 (current input).
● When the drive unit requires temperature sensors, set the power supply unit parameters
(parameters in the preceding tables) related to the hardware source defined by F4-25, F4-27, or F4-
29 to 2/3/4/5 (temperature sensor input, the value varies according to the sensor type).
● The power supply unit can monitor the voltage values received by itself, extension card 1, and
extension card 2 through U2-12, U2-13, U3-12, and U3-13.
● The drive unit can monitor the AI voltage values through U0-09, U0-10, and U0-11, monitor
temperature values measured by the PT/KTY temperature sensor through U0-51, U0-52, and U0-53,
and monitor the AI input function through U0-91, U0-92, and U0-93.
4.3.4.3 Functions of AI Terminals
When an AI is used as an DI, the AI state is high level if the input voltage is higher than 7 V and is low
level if the input voltage is lower than 3 V. The AI is in hysteresis state if the input voltage is between 3
V and 7 V. The following figure shows the relationship between AI input voltages and DI states.