Are the current out channels on an MC43 suitable for dishing out a 4-20 ma signal? It would be controlling a VFD.

I know the current out channels are typically used to control valves and used in the hundreds of milliamp range. 

We are using a MC43 and using PWM and COUT channels. What we have noticed is when a PWM HS output is shorted to ground, one of our COUT outputs goes into overload. In our case, C2:51 was shorted to ground but C2:67/C2:15 had the overload error. 

We are experiencing a problem with the HS+LS outputs on an XC44 module connected to an MC43 as the master running IQAN 6.07. Pin C1:46 as the HS and pin C1:41 as the LS.

The outputs are being used to activate a solenoid. The circuit was wired to run through a relay latched by system estop, with a diode placed across the solenoid to protect the outputs as in the documentation.

This circuit is able to latch and unlatch the solenoid with no problems, and this was repeatable many times. However when the system estop is pressed for the first time and the relay unlatches and breaks the circuit there is no error. When the relay is energized and the circuit is connected again, when the output is turned on a message is displayed reporting that the LS pin is overloaded. This message then triggers on either side of the estop from that point on. Key cycle is able to "reset" to the first estop cycle. This behavior happened ~9/10 times the cycle was repeated. There were some occasions where the error did not trigger.

The overcurrent error will only trigger when the output is requested, the estop relay can be re-energized connecting the circuit and no overcurrent is reported. 

Current measurements were taken on the HS+LS wire to investigate. The current on this wire never approaches or exceeds the listed 2.5A. This is the only load on that pin grouping, the other 3 LS pins were not used.

 Current_results.pdf

What might be causing MD4-10 screen to go white.

We have been told by our distributor here in the UK that all hardware (displays, master modules, expansions etc) are on minimum 12-14 week delivery time. Is this likely to improve any time soon?

Minimum of 3 months delivery for a component if we have one fail on a machine seems a very long time to wait!

Hello,

We are designing our last machines with XC42 instead the phase-out XC10 and we are experiencing some issues.

One of them is related with the activation of some Inverter (Euradrives) and Soft Starters (ABB) digital inputs.

When the DOUT HS is directly connected to those high impedance inputs and the output is OFF, surely due to the leakage current, the Inverter and the Soft Starter interpret it as ON state, so they run untimely!

It is possible to reproduce this just wiring a DOUT HS to a DIN PD, the input will be ON all the time, even when the DOUT is OFF:

Also, when the inpedance is very high (not with XC42 DIN PD in this case), the DOUT HS is ON, the Open load error appears due to low consumption of the high impedance inputs, and this checking cannot be disabled in the IQAN...

We thought to add and extra resistor in parallel to the high impedance input to avoid this error, but we don't like this "solution", it can be really dangerous because if the resistor is broken or loosen, the devices will be running untimely!!

Our only solution was to add 24Vdc relays in the HS outputs and wire the contact of the relay to the high impedance inputs.

We think that the best solution would be the possibility of disabbling this leakage current for Open load ckeching in the DOUT HS. Is there any possibility of implanting it in future releases?

Thanks for your help and best regards,

Adolfo

I am setting up my first project, run a servo.

I see how to set the frequency of the tag, but i don't see how to set pulse width.

0%=500us pulse  100%=2500us pulse.

Any example would be helpful 

Thank you !

XC21. Is it possible to connect 2 Digital out LS in parallel to drive more load?

I want to connect a buzzer that draws about: 400mA

Hello,

We are going to be mounting an XC43 externally. The module and connector are rated for it, IP6K9K.

Has anyone else done this?

How does one go about neatly mounting external diodes for the digital outputs?

I need diodes that go between HS DOUTs to ground and between the pins of HS+LS DOUTS.

Regards,

Just installed Design 6 and exploring the modules I noticed that some units we currently use such as, MC2, MD3, XA2, XS2 and MC3 are no longer included, when are these items going to be removed from sale? 

I obviously will not include them in any new designs but I was just wondering this as we have quite a few machines in production with these units going forward.