Hi all,
I'm using a Micrologix 1500 and a 1769-OA16 Analog Output.
I'm trying to control the VFD frequency from the PLC.
[FONT=verdana, courier new,courier,tahoma,sans-serif]
The VFD is a ABB ACS350, and I set the following parameters:
1103 (1) AI1
1104 (10 hertz)
1105 (60 Hertz)
1301 (20% which is 4 MA)
1302 (100% which is 20MA)
[/FONT][FONT=verdana, courier new,courier,tahoma,sans-serif]S1(in the VF1) is set onthe top position for AI1[/FONT].
B[FONT=verdana, courier new,courier,tahoma,sans-serif]ut the VFD frequency was always 60 Hz[/FONT], no mater the values in the PLC (N10:22)
[FONT=verdana, courier new,courier,tahoma,sans-serif]Then I changed switch S1(in the VF1) to
the top position for AI1, and I was able to change the frequency, but not
reflecting the input values.
For example:
Input=10, Frequency=42
Input=35, Frequency=52
Input=60, Frequency=60 [/FONT]
[FONT=verdana, courier new,courier,tahoma,sans-serif]
What I'm doing wrong? [/FONT]
I'm using a Micrologix 1500 and a 1769-OA16 Analog Output.
I'm trying to control the VFD frequency from the PLC.
[FONT=verdana, courier new,courier,tahoma,sans-serif]
The VFD is a ABB ACS350, and I set the following parameters:
1103 (1) AI1
1104 (10 hertz)
1105 (60 Hertz)
1301 (20% which is 4 MA)
1302 (100% which is 20MA)
[/FONT][FONT=verdana, courier new,courier,tahoma,sans-serif]S1(in the VF1) is set onthe top position for AI1[/FONT].
B[FONT=verdana, courier new,courier,tahoma,sans-serif]ut the VFD frequency was always 60 Hz[/FONT], no mater the values in the PLC (N10:22)
[FONT=verdana, courier new,courier,tahoma,sans-serif]Then I changed switch S1(in the VF1) to
the top position for AI1, and I was able to change the frequency, but not
reflecting the input values.
For example:
Input=10, Frequency=42
Input=35, Frequency=52
Input=60, Frequency=60 [/FONT]
[FONT=verdana, courier new,courier,tahoma,sans-serif]
What I'm doing wrong? [/FONT]