On Wed, 15 Apr 2020, Earl Weaver wrote:
Date: Wed, 15 Apr 2020 16:57:21 -0500
From: Earl Weaver <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: [email protected]
Subject: [Emc-users] CNC Hydraulic Pressbrake Retrofit
Hi,
I have a CNC Hydraulic Pressbrake that the controller isn't working.
I am looking at the possibility of retrofitting it with Linuxcnc.
Following are some questions to get me started:
The electrical cabinet is fairly small, should I consider a RPI4, or a thin
client computer, or mounting the computer outside the electrical cabinet.
If I use RPI4 what Mesa board setup would you recommend?
I currently have a tubing bender with Linuxcnc using a custom Glade gvc
panel for GUI and Mesa 5i25 with 7i76. I would consider using this as a
starting point, but does anyone have any other suggestions?
For step/dir with a RPI4 a 7I76E or 7I96 (Ethernet connected to RPI4) should
work
For the monitor display, the existing control arm would have room for an 8"
x 8" would this work for a small display, possibly touch screen? Or should I
build a bigger control arm?
So basically Linuxcnc needs to control the ram up and down, and the
backguage.
Will I be able to use the existing servo amplifiers?
Those are analog velocity mode servos so you would need a analog servo interface
The Heidenhain scale are standard TTL quadrature so readable by the 7I77 or 7I97
A 7I97 or 7I92M + 7I77 would work here
These are both Ethernet connected devices so will work with a mini PC or RPI4
Ethernet has the advantage that the control part can be a large distance from
the HMI and is galvanically isolated from the HMI
2 Axis Backguage controlled by two:
Moog Servo controllers
Model # 180-310A-A1
https://www.dropbox.com/s/blg15tpmlou0kjv/Moog-ServoDrives-L180-Manual-en.pd
f?dl=0
Ram up and down:
Heidenhain LS 629 Incremental Encoder
https://www.dropbox.com/s/2xsvvpcatklqei8/Heidenhain%20LS%20629%20Incrementa
l%20Encoder.pdf?dl=0
Bosch Servo Solenoid Valve with on-board electronics:
0 811 404 803
Type 4WRPEH10C4B100L-2X/G24K0/A1M
https://www.dropbox.com/s/rtr5n3pjg0ggkhp/BRH%204WRPEH_re29037_2005-10.pdf?d
l=0
Existing controller wiring diagram
https://www.dropbox.com/s/aajc63tr71dmcvg/ETS250%20%283%29.pdf?dl=0
Any advice, help would be appreciated,
Thanks,
Earl W
<mailto:[email protected]> [email protected]
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Peter Wallace
Mesa Electronics
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