kiark wrote:I somehow cannot get this working.
I tried the wiring diagram with the vi1 connection because the fwd doesnt have an av1.
So i used port 4 pin26 for the 5v out and a gnd.
Tool pin 5 and 6 from the analog port and set the pwm to channel 1 in the i/o input.
Do i have to program something on the vfd too?
Thanks for all the help!
kiark
??
Why would fwd have an av1?.
FWD is just a ground sinking loop circuit that goes to XGND for simple purpose of making it switchable.
It has no voltage.
Requires an external relay to switch it I/O or a wire loop to close the circuit permanently (on).
Circuit.....
XGND -> Relay com -> Relay NO -> FWD.
Relay.....
Uc300 connected DIRECT- output ports are all 5v+ positive.
Uc300 connected DIRECT- pins 18-25 are all negative.
Unless you complete a circuit using O#+ And a pin from 18-25- the attached device WON'T WORK.
Circuit........
O# -> relay+ pos -> relay- neg -> P18-25.
Needs to be SSR type or any type with only +/- connection.
A relay module with +/-/sig pins doesn't work directly as it is npn low designed for breakout board. A breakout board reverses uc300 port polarity and turns outputs to low trigger. Uc300 direct connection is pnp.
PIN26 IS JUST A 5V AUX POWER!!.
P26 to output won't work.
P26 to 18-25 will be permanently on.
Analog.......
P5 & P6 should be giving voltage. Test with a volt meter or a 12v bulb.
P6, (10v) -> VI1
P5, (GND) -> AGND
should work.
Are you sure you gave the correct vfd model?.
Post pic of connection block just to check.
The vfd you listed should work with the above circuits.