WEG MVW3000 Series, Руководство по программированию

Страница: 122 / 264

5
DETAILED PARAMETER DESCRIPTION
P0236 - Analog input AI1 offset (unipolar MVC4 board)
Adjustable range: -100.0 to 100.0 % Factory setting: 0.0 %
Acesso: Menu
→
Configurations
→
I/O
→
Analog inputs
Description:
Refer to P0234.
P0237 - AI2 signal function
Adjustable range: 0 to 3 Factory setting: 0
Acesso: Menu
→
Configurations
→
I/O
→
Analog inputs
Description:
When the option 0 (P0221/P0222) is selected, AI2 is able to provide the reference (provided that programmed
so in P0221/P0222), subject to the reference limits (P0133, P0134) and ramp action (P0100 to P0103).
See Figure 5.24 on page 5-40.
Option 3 (Process Variable) defines the AI2 input as the PID regulator feedback signal (e.g., pressure or tem-
perature sensor, etc.), provided that P0524 = 0.
Table 5.38: AI2 signal function
P0237 Function
0
P0221/P0222
1 Not Used
2
Maximum torque current
3
PID process variable
✓
NOTE!
This parameter can be changed only with the motor stopped.
P0238 - Analog input AI2 gain (bipolar MVC4 board)
Adjustable range: 0.000 to 9.999 Factory setting: 1.000
Acesso: Menu
→
Configurations
→
I/O
→
Analog inputs
Description:
AI2’ = -2 V, meaning that the motor will run in reverse direction with a speed reference absolute value equal to
2 V.
The internal value of AI2’ is the result of the following equation:
AI2’ = ( AI2 +
OFFSET
100
×
10 V )
×
Gain
Example: AI2 = 5 V, OFFSET = -70 % and Gain = 1.00
AI2’
= (
5
+
(
-70
)
100
×
10 V
)
×
1 = -2 V
AI2’ = -2 V, meaning that the motor will run in reverse direction with a speed reference absolute value equal to
2 V.
MVW3000 | 5-46