HP Latex R2000 Troubles

[jallison25]

Hi All,

having a weird issue and wanted to reach out before contacting HP.

I am in the process of running banner roll to roll for a customer of various sizes. I ran 38, 54, and 63 in banner with no issues. But when I moved up to 80", the printer seems to have stopped applying the input tension. as it's printing, every time the media advances, the input would spin freely. That causes the printer to believe that its aout of material when in fact it is not. I've checked to make sure all of the latches for the spindle are down and locked, made sure the spindle gear and the motor gear are locked in and engaged, I ran the substrate movement diag and all motors report ok. My input tension is set at 125 the max is 150. all of my vacuum settings are at 750 the max is 1300. Not sure what else to check. I've fully shutdown and restarted a dozen times.

Any suggestions?

 

[balstestrat]

I know the reason. You know how it tries to straighten it after loading? That 80" banner is just not sliding on the belt and it's too much force, so the input roll is shut off to not cause breakage. But it won't be turned back on.

Now you can try to max out the input tension but I think eventually you are better just loading it "from table" or anything else than the tensioned roll.

There's no way to skip it or disable it.

 

[jallison25]

I know the reason. You know how it tries to straighten it after loading? That 80" banner is just not sliding on the belt and it's too much force, so the input roll is shut off to not cause breakage. But it won't be turned back.

Now you can try to max out the input tension but I think eventually you are better just loading it "from table" or anything else than the tensioned roll.

There's no way to skip it or disable it.

I did think about that. I've had issues with motor errors in the past and it was because my vacuum was too high. Once I turned it down, it worked. I ran 98in only a week ago and it worked just fine. tension and all.. so it but be sensative to how it's being loaded. also. I would have to try to reload again but i am pretty sure theres tension on the roll prior to starting the print, after the initial loading. Now i know that it does it's de-skew thing right before it starts printing so you think it could be shutting off due to that?

 

[balstestrat]

It will still do a straightening just before it starts to print and between jobs. Also the vacuum doesn't really make any difference because it will turn it off and wait for it to go down.
Even the small amount of vacuum and weight of the banner will make it so that as soon as the belt starts pulling and the substrate doesn't slide, it will cut the power to the motor and like I said, it won't come back on.

I've watched this next to the machine for hours and there's no fix.

Ah I didn't really read all the way before typing but yes, de-skew will do the same.