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11088 Posts in 3073 Topics by 2347 Members
Latest Member: Bruce Barna
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Author Topic: Quipp 400 Stacker Infeed Speed Error  (Read 1232 times)
andrewa
Jr. Member
**
Company: morning call
Posts: 6


Email
« on: June 17, 2012, 02:36:28 AM »

Hello Everyone,

I checked the site and could not find anything related to my problem. We have a quipp stacker 400 and it recently came in due to the No Infeed Speed Pulses error. We had seen the belt speeding up and slowing down as if something was dragging it down. Checked all over this machine and did everything the book suggested. Even replaced the bearings in the pulleys. Stacker will only run for a few minutes before the belt slows down and it shuts off. We have tried the belt loose and tightened. I believe the motor for the infeed might be going bad but when run with the belt off the shaft pulley spins with no problems. Has anyone come across this before or does anyone have any input? I'd greatly appreciate it. Love these forums I have solved several problems just by reading. I'm new to this field of maintenance so any help is appreciated.

Things tried:
1. new sensor - failed
2. pulley bearings replaced - failed
3. belt loose/tight - failed
4. changed card related to infeed - failed
5. checked air pressures - failed
6. Cant find any physical product binding anywhere on infeed belts.

Andrew
The Morning Call
Maint. Electrician
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Bill Birchall
Hero Member
*****
Company: Lancaster Newspapers
Posts: 126


Email
« Reply #1 on: June 19, 2012, 09:33:40 AM »

Andrew,
A couple things to consider if you already havenít done so. Is the air gap between the sensor and the gear correct? Is the sensor holder tight? Is the gear run out within spec?
Possibly a bad connection or broken wire that will intermittently fail. If you go to the I/O screen and turn the gear shaft around by hand, does the input for S/D sensor skip any teeth? When the stacker is running, does that input ďflickerĒ?
Maybe you have already checked for this, I didnít see it on your list.
I would be concentrating on a fault in the speed sensor circuit since you are getting an error code.
It could possibly be the drive for that motor. Substituting a good drive is the only way I know to test for that.
We donít have any 400 series stackers. Ours are 350 and 500 series, but they seem to operate in the same fashion.
Good luck. Let us know what you find.
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Bill Birchall
Lancaster Newspapers, Inc.
Dave Paschall
Hero Member
*****
Company: The Yuma Sun
Posts: 61



Email
« Reply #2 on: June 19, 2012, 12:04:19 PM »

Bill ,you did not mention what the spec was for the sensor air gap. I know when I have had to adjust the pick-up sensor on  my 500 wide for this same error, the air gap between the sensor and the rotor was extremely close before the error would go away. Maybe the sensor is losing its sensitivity over time. I know any closer and it will be close to making contact.
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Bill Birchall
Hero Member
*****
Company: Lancaster Newspapers
Posts: 126


Email
« Reply #3 on: June 19, 2012, 01:56:19 PM »

Dave,
According to the book that came with one of our 500 stackers, the gap is .01 to .025Ē.
Since Andrew replaced the sensor, I am assuming the replacement is good (however there have been rare instances over the years when that assumption proved to be wrong with certain things).
We have a 400 series book that must have come with one of our 500 stackers and both books are appear to be identical with regards to the speed/distance sensor setup.
One thing they mention for trouble shooting is to make sure there is 12VDC to the sensor and that the output voltage is correct. They donít mention what the output voltage should be.

Bill
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Bill Birchall
Lancaster Newspapers, Inc.
Gary Hesson
Full Member
***
Company: Odessa American
Posts: 23


Email
« Reply #4 on: June 19, 2012, 02:20:47 PM »

Andrew,

1st time I had this happen, it was the sensor. 2nd time it was the infeed motor. Front bearing going out.

gh.
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Gary Hesson
Mailroom Manager
Odessa American
Odessa,Tx
432-333-7635
ghesson@oaoa.com
R. Hodge
Jr. Member
**
Company: Herald Democrat, Stephen.s Media
Posts: 7


« Reply #5 on: June 27, 2012, 10:54:59 AM »

Andrew,
 Had the same problem. I replaced the K1 relay &  MS1 contact and moved the in feed card to another slot. Hope this helps.

Raymond Hodge
Herald Democrat Shopper
Sherman Texas
903-893-8181
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drusso
Newbie
*
Company: Star Ledger
Posts: 4


Email
« Reply #6 on: June 28, 2012, 04:15:27 PM »

The quickest way to set up a prox sensor is by using a D.V.M.
When the gear is running the meter should read 1/2 of the voltage that is supplying the sensor.
A 12 vdc prox sensor should be adjusted to 6 vdc between the output wire and the minus wire.
This method is used when an oscilloscope is not available.
The machine is looking for a 50/50 duty cycle from the sensor.
Hope this helps when replacing prox sensors.

thanks,
dave

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