+1

COUT Minimum Current

Josh Holt 11 months ago in IQANdesign updated by Joshua Holt 10 months ago 3

Hello,


I am trying to run a Mitsubishi VFD that takes a current input of 4-20mA to change what hz the connected motor is running at. The VFD says it's not receiving a current command.

I see this excerpt in the manual:


Minimum current
There are several diagnostics methods that are active, one of these methods is based on
measuring current. The threshold for detection has been selected based on the
assumptions that currents below specified minimum current does not cause movement.
Error detection limits and delay
The COUT has two separate measurements of current, and is capable of detecting drift
faults on the closed loop control of the output. To avoid spurious trips, it is designed to
tolerate some deviation. The worst-case detection time for the most severe type of
faults are listed in the table below:
Since the MC4xFS COUT channels are grouped in pairs sharing an internal high-side
driver channel, shutdown of one COUT will cause shutdown of both COUT channels
in the pair. Restart conditions are controlled by the application.
Appendix B has detailed lists of failure modes focused on output wiring faults.
C4x-SMR-027:A Minimum current when using COUT
Safety related output functions controlled by COUT shall be designed so that
movement can only be activated if the output current is > 100 mA. 


Maybe I'm misunderstanding, but if the minimum current is 100mA, why does it let me set a COUT range of 4-20mA without throwing an error?


+1

Support for Kvaser BlackBird v2

Jason H 11 months ago in IQANdesign updated by Gustav Widén (System support) 10 months ago 1

The USB interfaces page mention Kvaser Leaf as being a supposed USB to CAN interface, but is the Kvaser BlackBird v2 (https://kvaser.com/product/kvaser-blackbird-v2/) fully supported as well?  I have one that I can get to work with IQANanalyze but it can't find a master module to connect with when used in Design.  It is recognized as an interface under Tools>Options>Communication as a CAN adapter but I an error message when trying to connect (see screenshots below)

Image 4468

Image 4469

+1
Fixed

Populating dual object value bug

Kevin 12 months ago in IQANdesign updated by Gustav Widén (System support) 8 months ago 3

Sometimes using a dual object as a limiter on a dual direction math it does not store the value entered. Not sure if its the same on other functions.

Enter value into Out 1 then hit down key rather than return key and the value fails to store although appears to be saved in the property section.

Enter value into Out 2 then hit up key the value fails to store.

Clicking off the channel in the main workspace and then reselecting it shows it has not remembered the value you entered in property section, and instead goes with the value shown at the bottom of the page.


I had multiple instances where I thought I entered a value and found it had not stored correctly, but seems intermittent, made worse if you key down to Out 1 (to enter a value) from the 'input' selected (highlighted) first rather than using the mouse.

IQAN Design 7.02.

Image 4458

+1

Program update via USB display port

Pawel Pekala 12 months ago in IQANdesign updated by chuck streb 12 months ago 1

It would be a nice addition to the MD5 family if we had option to upload/update programs via onboard USB port. Rather than relaying on proper cell coverage we could simply email the file and have the end user push an update via the USB port. It appears to me that most of other controllers have that feature build in. 

+1
Answered

Log decimals

Jacob Meng 12 months ago in IQANdesign updated by Gustav Widén (System support) 12 months ago 3

Is there a way to log decimal numbers in the event log? The values I have now are stored as whole numbers with ".00" after even through the actual channel they were reading has decimals. For example, a channel value of 5.4 is logged as 5.00.

+1

Step Size

Josh Holt 1 year ago in IQANdesign updated by Gustav Widén (System support) 12 months ago 1

I have a function parameter with a step size of 50 that the user can adjust. This is working fine when they use the + or - to adjust the value, but when they bring up the keypad (MD4) it is allowing them to enter values outside of the specified step size. Is there anyway to fix this?

+1

Lamp off Image Library Issue

Jamy 1 year ago in IQANdesign updated 11 months ago 3

Design Issue 7.02.31.9477: When adding a lamp component from the stock image library, the system does not permit the selection of an "off" image from the same library.

+1
Under review

Better frequency Input resolution

Fred A. Bland 1 year ago in IQANdesign updated by Andrew Slaght 2 months ago 11

When monitoring a slower frequency input, less than 50 HZ, is there a way to achieve better resolution that 1 HZ? 

The frequency input channel itself appears to be a float variable as it displays two zeros after the decimal point. 

The application I am working on the frequency signal range is approx. 7.48 Hz to 16.72 Hz.  The two extra decimal places would be extremely helpful in calculating an accurate speed.  In most situations I would suggest to increase the number of pulses per revolution to increase the frequency reading, but in this situation it is not possible. 

Is increasing the resolution of this channel something that can be implemented?

+1
Answered

Custom variable on X axis in measure group plot (IQANrun and IQANdesign)

Viktor Larsson 1 year ago in IQANdesign updated by Gustav Widén (System support) 1 year ago 3

Sometimes it is useful to plot variables as functions of other variables rather than time, e.g. cylinder velocity as function of joystick signal.

+1

IQANdesign 7 Bug with Finite State Machine to place states on the screen if zoom not 100%

A DOMS 1 year ago in IQANdesign 0

While working on a finite state machine, 

When moving a state to organise it, 

if zoom is not 100%, the state can move away from where you want to drop it


In this vidéo you can see, at the begining Zoom is 100% and it's ok

But after when zoom is 80%, the state move away from where I drop it :

Image 4333



I think it's only when moving a little bit,