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#31653 - 09/01/21 02:07 PM Miprom 21 45 fault  
Joined: Jul 2021
Posts: 5
Veterans elevat Offline
stranger
Veterans elevat  Offline
stranger

Joined: Jul 2021
Posts: 5
I have a miprom 21 with drive conversion done so using the magnetek 412 drive. I am getting a 45 fault on computer. changed out both motor and car encoders still have issue checked parameter 10 on drive its set right. checked all connections for loose or broken wires found nothing check shielded wires from drive to encoder no issues. If I change Bt and B- i get control of car but run revered direction. and help would be great thank you.

#31654 - 09/01/21 02:14 PM Re: Miprom 21 45 fault [Re: Veterans elevat]  
Joined: Feb 2013
Posts: 757
john jay Offline
old hand
john jay  Offline
old hand

Joined: Feb 2013
Posts: 757
ohio
look at the M Switch and associated contacts.

#31655 - 09/01/21 02:24 PM Re: Miprom 21 45 fault [Re: Veterans elevat]  
Joined: Jul 2021
Posts: 5
Veterans elevat Offline
stranger
Veterans elevat  Offline
stranger

Joined: Jul 2021
Posts: 5
check the M contactor and aux contacts all working right.

#31656 - 09/01/21 05:47 PM Re: Miprom 21 45 fault [Re: Veterans elevat]  
Joined: Feb 2013
Posts: 757
john jay Offline
old hand
john jay  Offline
old hand

Joined: Feb 2013
Posts: 757
ohio
on an original DC Drive this error was caused by the CPU telling the Drive everything is ok to run. The brake opens and the M switch pulls in, then if it is an up call there would be no voltage to the motor brushes. The car would drift up due to the counterweights and throw a 45 error. If it was answering a down demand it would throw a comparator trip fault. If you can get control of the car by changing the B+ and B-, then try reversing the Armature A1 and A2 wires to the motor at the same time.

#31659 - 09/01/21 07:48 PM Re: Miprom 21 45 fault [Re: Veterans elevat]  
Joined: Dec 2010
Posts: 566
elmcannic Offline
addict
elmcannic  Offline
addict

Joined: Dec 2010
Posts: 566
S. Central Utah
Which motion region is this occurring?
Which direction? Same every time?
Can you see if the ropes slip coming into a mid upper floor?
Agreed- if that clumsy OEM Allen Bradley “M” contactor is being used, get all new aux contacts.
Car top encoder? Check that the wheel bearings are good with no wiggle on the axle and spring pressure onto the rail is sufficient.

#31666 - 09/02/21 12:51 PM Re: Miprom 21 45 fault [Re: Veterans elevat]  
Joined: Jul 2021
Posts: 5
Veterans elevat Offline
stranger
Veterans elevat  Offline
stranger

Joined: Jul 2021
Posts: 5
Its in region 1 as soon as it starts it takes off over speeds and stops. new car top encoder and new motor encoder already installed. also has KONE drive mod with magnetek 412 drive so not using old Allen Bradley starter and just to make sure it wasn't aux contacts I install an ice cube relay for those contacts to bypass them for checking purpose. On inspection it runs up direction only. It doesn't have any control from an encoder. checked wiring to both encoders all is good there. installed 2 new encoders on the motor, traced encoder boards to make sure of no burnt traces. computer shows no VC feedback. also changed MSU board.

#31667 - 09/02/21 01:45 PM Re: Miprom 21 45 fault [Re: Veterans elevat]  
Joined: Feb 2013
Posts: 757
john jay Offline
old hand
john jay  Offline
old hand

Joined: Feb 2013
Posts: 757
ohio
Check that the parameter jog adjust is at 100% in the CPU and the drive. Did you try reversing the A! and A2 wires, when you swapped B+ and B-?

#31670 - 09/02/21 03:40 PM Re: Miprom 21 45 fault [Re: Veterans elevat]  
Joined: Nov 2016
Posts: 104
Goat Offline
member
Goat  Offline
member

Joined: Nov 2016
Posts: 104
Might want to swap out the backpane. I had issues with a Miprom 21 and I tried swapping all sort of boards. Finally one day I started pressing on boards, especially the MSU and the problem went away. Bad connection on the backpane was the culprit. It wasn't your exact fault though.

#31745 - 09/13/21 08:06 PM Re: Miprom 21 45 fault [Re: Veterans elevat]  
Joined: Jan 2015
Posts: 117
Turbo6 Offline
member
Turbo6  Offline
member

Joined: Jan 2015
Posts: 117
Chicago
Sounds like your encoder is out of phase


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