toddp65
Member
Scenario:
Scaling speed reference to 0-10 vdc speed reference on Mitsubishi D700 VFD
Controller is a 1769 L32
AO Module is a 1769 OF4 configured for 0-10 and raw units.
I've been trying to get this drive controlled by my analog output. I have some frequency control but its wrong.
Scaling number on my SCP AOI
Min in 0
Max in 90 (drive is setup for 90 maximum frequency)
Min out 0
Max Out 32700
When enabled, the 90 HZ brings my drive to 100% but it doesn't leave 100% (or 90 hz) until about 75 Hertz pushed to it proportional to the scaling raw value.
When 0 is pushed, I'm still getting 5 volts from my analog card despite the value being 0 on my push to the assigned analog output channel. (Local:4:O.Ch2Data).
Am I scaling this incorrectly? I am used to pushing values to speed reverence tag using ethernet IP and it's been a while since I used an actual AO module that wasn't using a PID instruction.
TIA
Scaling speed reference to 0-10 vdc speed reference on Mitsubishi D700 VFD
Controller is a 1769 L32
AO Module is a 1769 OF4 configured for 0-10 and raw units.
I've been trying to get this drive controlled by my analog output. I have some frequency control but its wrong.
Scaling number on my SCP AOI
Min in 0
Max in 90 (drive is setup for 90 maximum frequency)
Min out 0
Max Out 32700
When enabled, the 90 HZ brings my drive to 100% but it doesn't leave 100% (or 90 hz) until about 75 Hertz pushed to it proportional to the scaling raw value.
When 0 is pushed, I'm still getting 5 volts from my analog card despite the value being 0 on my push to the assigned analog output channel. (Local:4:O.Ch2Data).
Am I scaling this incorrectly? I am used to pushing values to speed reverence tag using ethernet IP and it's been a while since I used an actual AO module that wasn't using a PID instruction.
TIA