Question

1.A PLC shows a mA value of 8 mA when a VFD is running at 25% and a value of 10.4 mA when at 40%. What speed is the VFD running when 12 mA is read?

2.A PLC shows a mA value of 8 mA when a VFD is running at 25% and a value of 10.4 mA when at 40%. What speed is the VFD running when 12 mA is read?

3.A PLC shows a machine code value of 26208 when a level transmitter reads 80 ft and a value of 7488 when the level is 5 ft What would expect the machine code value to be when the level is 0 ft ?

4.A PLC shows a machine code value of 18720 when a level transmitter reads 50 ft and a value of 21216 when the level is 60 ft What would expect the machine code value to be when the level is 15 ft ?

5.A PLC shows a machine code value of 10920 when a VFD is running at 20Hz and a value of 16380 at 30 Hz. What machine code value do you expect to get if the VFD running at 25Hz?

Answer 1