- Joined
- Feb 7, 2019
- Messages
- 64
I recently purchased a APM Trumeter to monitor the frequency output of my VFD. The hookup is very straight forward however getting the instrument to function has been a challenge. Below is the programing sequence I went through;
1 - C028 = 00
2 - C109 = 10 (i used every parameter here with no meter activity)
3 - C106 = 100-200 (likewise with this parameter, no meter activity)
The meter is powered up fine with the 24vdc PSU connection, I have doubled and tripple checked all of my connections to terminals AM and L on the VFD, all is good there. I'm reading + or - 10vdc to the input terminals of the meter but reading nothing on the scale. I'm wondering if the use of a 5k potentiometer sharing the L terminal may be a problem. Any assistance would be welcomed...
1 - C028 = 00
2 - C109 = 10 (i used every parameter here with no meter activity)
3 - C106 = 100-200 (likewise with this parameter, no meter activity)
The meter is powered up fine with the 24vdc PSU connection, I have doubled and tripple checked all of my connections to terminals AM and L on the VFD, all is good there. I'm reading + or - 10vdc to the input terminals of the meter but reading nothing on the scale. I'm wondering if the use of a 5k potentiometer sharing the L terminal may be a problem. Any assistance would be welcomed...
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