Ehsan-ul haq
Member
Hi All,
I am using CompactLogix L33ER with a 1769-IQ16F card for a rotating machine shaft ( drive and driven pulley arrangement with V belts ) speed measurement. There is a Turck Inductive sensor in the field capable of 1Khz switching frequency. The shaft actual speed is 485 rpm but the counter in studio5000 is readying 402 pulses in every minute.
As part of troubleshooting, I changed the striker/target size and every time I got different number of pulses. Size x of striker gave 96 rpm, size 4x gave 250 rpm and size 10x gave 402 rpm.
I changed the filter On to Off and Off to On to 0.1 msec but same result. RPI for the card is set at 20 msec which I am not sure if it is correct.
Main Task is set to Continuous Type with 500 msec watchdog time value set.
In summary, card is not able to capture every pulse. Any tips, suggestions to fix this problem would be highly appriciated.
Thanks
I am using CompactLogix L33ER with a 1769-IQ16F card for a rotating machine shaft ( drive and driven pulley arrangement with V belts ) speed measurement. There is a Turck Inductive sensor in the field capable of 1Khz switching frequency. The shaft actual speed is 485 rpm but the counter in studio5000 is readying 402 pulses in every minute.
As part of troubleshooting, I changed the striker/target size and every time I got different number of pulses. Size x of striker gave 96 rpm, size 4x gave 250 rpm and size 10x gave 402 rpm.
I changed the filter On to Off and Off to On to 0.1 msec but same result. RPI for the card is set at 20 msec which I am not sure if it is correct.
Main Task is set to Continuous Type with 500 msec watchdog time value set.
In summary, card is not able to capture every pulse. Any tips, suggestions to fix this problem would be highly appriciated.
Thanks