Freelance AO820 and AI820 +-20mA
First time playing with AO820 and I came ot result. In Hw structure I use Integer for output value. I like to use complete rand +/- 20mA. When integer is 0 I get 4mA on output. When integer is -7210 then surrent is 0mA. Any idea about his behaviour.
Second problem is with AI820 it is on TU810 and always gets red light on - what can be problem.
Second problem is with AI820 it is on TU810 and always gets red light on - what can be problem.
Asked 22 days ago
Answers
0
Dear.
1. Please Check from the Manual os S800 IO that AI820 is supported with TU810 or NOT.
2. For Freelance Please check the Wiring as the reverse Polarity might causing the abnormal behaviour of the IO.
Thanks and Regards
1. Please Check from the Manual os S800 IO that AI820 is supported with TU810 or NOT.
2. For Freelance Please check the Wiring as the reverse Polarity might causing the abnormal behaviour of the IO.
Thanks and Regards
Answered 22 days ago
0
Make sure the module is properly inserted in the base and its is locked by locking mechanism. Are you measuring from correct terminal points? For AO820/TU810, Its between C1 & B1 for channel 1. C3 & B3 for channel 2.
In AI820 for Channel 1, a 4 wire transmitter shall be connected to C2, B2 and C1,B1 has to be looped.
for Channel 2 four wire transmitter shall be connected to C4, B4 and C3,B3 has to be looped.
In AI820 for Channel 1, a 4 wire transmitter shall be connected to C2, B2 and C1,B1 has to be looped.
for Channel 2 four wire transmitter shall be connected to C4, B4 and C3,B3 has to be looped.
Answered 22 days ago
0
Problem is solved. If you change in HW structure from 4...20mA to -20mA...20mA it is necessary to load whole station. Then it will have effect.
Thank you
Thank you
Answered 9 days ago
by marko.kolakovic Rank: 2713 on 11/4/2019 12:13:47 PM | Like (0) | Report
Hello problem with AI820 is solved, I have deleted from HW structure and redone from zero and it works now - Red led was flashing before.
AO820 I am still struggling. I have put 4 INT as outputs and n HW adjusted -20...20mA. When I give zero 0 to Integer on card I am measuring 4mA between B and C. In negative way with integer of -32726 I get -14mA and in positive of 32726 I get 22mA
Does anybody have some more idea?
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