Strippit Houdaille
HECC80 CNC Control Types,
and Some Common Problems & Fixes
Many People (Salesmen, Servicemen, and Customers) Bandy-About the Name
"HECC80 Control", which has become sort of a Generic Term for Older
Strippit CNC Controls. But these People Rarely know what they are Taking About.
Some People even call the old NC Hard-Wired "A Controls" HECC80's,
which they Certainly Are Not!
To Properly Evaluate, Operate, & Service Your HECC80 Control,
You Need To Know Exactly What TYPE of HECC80 Control It Really Is!
HECC80 is a Acronym for "Houdaille Electronics Computer Control"
and the 80 is from the Intel 8080 Microprocessor that was First Used in them.
There are 2 Main-Types of HECC80 Controls.
For Clarity, We will call the First-Type HECC80/1 Controls,
and the Second-Type HECC80/3 Controls.
HECC80/1 CONTROLS
--- Pre-Regulator Panel
The Pre-Regulator takes the Raw D.C. Voltage (about 12 to 13 VDC) from the Floor-Plate Assembly, Pre-Regulates it to a Clean Voltage (about 8.5 to 9 VDC) before sending it to Each Circuit Board's
5 Volt Regulator in Card-Cage Assembly. Without clean 5 volt Power to Chips, anything can Happen.
The 2 Power-Transistors Mounted on the Pre-Regulator Panel get their Raw DC Power through a Wire & Ring-Terminal on 1 of the 2 Mounting-Screws. Over time, the Insulation underneath Crumbles and Connections gets Loose, Corroded, and Electrically Intermittent. We put additional Nylon Insulator Washer on Screw, Solder (Not Crimped!) a New Ring-Terminal on Wire with a Second Wire & Ring-Terminal to Loop-Over to other Mounting-Screw, so the Transistor Now gets DC Power from BOTH Mounting-Screws. Repeat for the other Transistor.
This Work Needs to be done by a Good Technician.
The First Type of HECC80 Controls are commonly called the HECC80/1.
They are easy to distinguish by the 1-Line Self-Scan Display Unit, and the small Keypad used for Data-Entry,
like the Control pictured at the left.
This was a Great Advantage for Strippit (Houdaille Electronics was just 5 miles up the road, and was really just Part of Strippit) to Design & Manufacture Their Own Custom CNC Controls Just for Their Punch Machines.
All of the HECC80/1 Type Controls are closely related, and many of their Circuit Boards are interchangeable, But Not All!
Great effort was made by Engineering, but this was a big project for a small Company, and development was a bit slow. To put it in Proper-Context, Strippit shipped their CNC HECC80 Control 5 years Before IBM shipped their First PC Computer!
HECC80/3 CONTROLS
The Second Major Type of
HECC80 Controls We will call the
HECC80/3 Controls,
though HECC80/30x
would be more Accurate.
Easily Identified by the
12 inch CRT Monitor Display
and Full Keyboard
as shown in the Picture at left.
That's the Machine Technologies Replacement Keyboard
shown in the Picture,
as the Original Microswitch
Keyboard has Failed.
The Family of HECC80/3 Controls are also Closely related to each other.
There are 8 Types of these Controls;
--- HECC80/3 First of this series of Control, used only on FC1000/3 Machines. Featured Intel 8085 Microprocessors on 2 CPU Boards in Slots 2 & 10, CRT Display, 32K of Ram Memory with Battery Back-up, full Keyboard, and the G.E. Model 3 Servo for High Axis Speed (3000 IPM). Most of these Controls were later Retrofitted in the field to HECC80/302 Status, to get the Advantages of the Bubble Memory Board. Around 30 of these Controls were build in 1981 to 1982.
Control uses #401300-000 Schematics.
--- HECC80/302 Basically an Updated HECC80/3 Control used only on FC1000/3 Machines. L6 Prom Board was replaced with the #401350-000 256K Bubble Memory Board which provide 128K of Memory for Customer's Part-Programs and 128K for Machine & Control Executive Run-Programs that ran Machine. Ram-Memory also upgraded to 48K, used 3 -- 16K Ram Boards in Slots L3, L4, & L5 on early Controls, and 1 -- 48K Ram in Slot L3 on later Controls. Servo Drives were upgraded from G.E. 3 Drive to the Much improved G.E. 3A Drive.
Built from 1982 to 1986, uses #401473-000 Schematics.
--- HECC80/302 Conversion A Ram and Bubble Board Upgrade to Convert, in the field,
a HECC80/3 Control, to a HECC80/302 Control. Most HECC80/3 Controls were Converted to HECC80/302 Control status in 1982 to 1984 by Dandy Don Dahlin and his Merry-Men. But a few were Never Converted. Conversion uses #401522-000 Schematics. To further Confuse, these is also a HECC80/302 RETRO Schematic #401660-000 which adds More Updates like Phase-Monitor,
Power-Fail Diode, Etc.
--- HECC80/302A A Updated HECC80/302 Control to Latest-Style Circuit Boards for Improved Reliability. Used only on the "Reliability" Series FC1000/3 Machines, which had many Mechanical Improvements, which began with Machine Serial #200. FC1000/3's with 302A Controls are the Best!
Made in 1984 to 1986, uses #401722-000 Schematics.
--- HECC80/304 Basically a HECC80/302 Control mounded in a Stand-Alone Cabinet, with special Software & Proms and I/O boards for use on the FC1500/45 Punch & Plasma Machine. Oddly, Strippit built these Controls first using the G.E. Model 3A Servo-Drives, and later-on using the Model 2 Servo-Drives, which are Very different! Built 1983 to 1986, uses #401470-000 Schematics.
--- HECC80/306 Basically a HECC80/302 Control mounted in a Stand-Alone Cabinet, with special Software & Proms and I/O boards for use on the FC1250/30/1500 and FC1250/30/1500 Laser Tool Machines. Used G.E. Model 2 Servos only. Built 1983 to 1986, uses #401592-000 Schematics.
--- HECC80/BC Basically a HECC80/302 Control mounted in a stand-alone Cabinet. Had a special CRT Graphics Board, Software, and I/O to run the Blanking Center Machine. A Blanking Center was a FC1250/30/1500 Table-Assembly Mated to a Herr-Voss Shear to make a CNC
Right-Angle Shear Machine for Stand-Alone Operation, and Punch-Machine Cell Systems.
Used G.E. Model 2 Hi-Ack Servo. Built 1983 to 1986, used #401359-000 Schematics.
--- HECC80/2 There was also a couple of HECC80/2 Controls build around 1980.
These were Special Controls that were Custom-Made for a New Caterpillar Co. Plant that was being built with all Machines being DMC (Central-Office) Controlled. These Specials became the Basis for this HECC80/30x family of Controls. These Custom Controls probably do not exist anymore. Schematics #???
For More Common HECC80/30x Control Problems,
Please Check-Out the "Bubble Board Adjustment & Fixes" Web Page.
This page was last updated: November 19, 2007
Original Diode
Steel Heatsink
Our Rework with
Aluminum Heatsink
& New Wires
Original Pre-Regular Panel
Our Rework, New Wires & Connections
For Identification & Historical Purposes, this is one of the NC
(Numerical Control)
"A" Controls that Predates the CNC HECC80 Controls built by the now Defunct
Houdaille Electronics Division of the Defunct
Houdaille Corporation.
Again, People Mistakenly call All of these NC Controls,
"A" Controls, Which They Are Not, because they don't know any better,
and don't really care.
The A's were Very Good NC Controls (30S3, 30S4, and HC are Much less desirable)
from that Pre-CNC Era, and I still have about 12 that I keep running at some of my Customer's Shops.
But their Time has Passed, and are becoming Hard To Support. There are only about 3 Servicemen (Including myself) here in the US (and None Overseas) that I consider Competent to work on them. If you are located far from us, you will Not be able to keep them Running from a lack of Good Service & Parts.
For this reason, I Recommend my Customer's Scrap their "A" Control Machines, and Upgrade to CNC Control Machines, which Offer More Features, Better Reliability, and Better Service & Parts Availably.
And I Do Not-Recommend Anyone Buy a NC "A" Control Machine these days,
No Matter how Enticing the "Cheap" Price may be
for all the above Listed Reasons!
--- HECC80 This is the Original HECC80 Control. Only about 50 were made in late 1978 to 1979. Had NO Memory, it ran off of Paper Tapes like a old NC Control! This is because Marketing Dept. said "Ship It" even though Engineering was still designing it! Had 1 Prom Board for storing the Machine & Control Executive-Run Program. The Monitor Boards did not Monitor Control Voltages, as they did not work yet. This is why early Controls would Burn-Up Components like Tapereaders and Circuit Boards, because Monitor Boards did Not Shut-Off Control when a Power Supply Failed, like it was suppose to. This is where the HECC80 got its Bad Reputation. Some Servicemen called it the "Belch-Fire 80". Control was Rapidly Improved by Engineering Dept., and soon became a very good Control, but the Damage to it's Reputation was done. Original HECC80's used #400575-000 Schematics. Most of these Early HECC80's were later Upgraded with 2 Prom and 2 Memory Boards to HECC80/1 Status, but there is still a couple of Original HECC80's around.
--- HECC80/1 This is an Improved & Upgraded HECC80, built 1979 to 1981. Had 2 Prom boards (HECC80/1 Software) to hold more advanced Executive Machine & Control Run program. Had 2 Memory Boards to allow Edit & Storing of Part-Run Programs, and was a true CNC Control. Later HECC80/1's had Resolver Excitation Board Upgrades from 2 MHZ to 3 MHZ for better Servo Tuning & Response & Positioning-Accuracy. Many Internal Improvements were also made to Control for greater Control Reliability, including a 6000 BTU Air Conditioner fitted to back of Control to get rid of Heat. HECC80/1 Controls used the #400875-000 Schematic sets.
--- HECC80/102 An Updated HECC80/1 Control to allow faster Axis Speed and a higher Punch Hit-Rate. Mainly a Software Change (HECC80/102 Proms) to allow the higher hit-rate, and Position Comparator Board Changes for the same reason. Late HECC80/102 Controls had a 3 MHZ Sine-Wave Excitation Board which made a Big Improvement in Accuracy & Servo Response necessitated by HECC80 Controls being used on Laser Machines. I often put HECC80/1 Prom Boards in HECC80/102 Controls because I find they work better at the slightly Slower Punch & Axis Speed.
HECC80/102 were built from 1981 to1986, and used #401290-000 Schematics.
The Last HECC80/102 Control was on the Last FC1000/2 Machine S/N 454021086, built in 1986,
which is interesting as the New-Model FC1000/3 Machines were first shipped 5 years Earlier!
--- HECC80/750 A Repackaged HECC80/1 Control with only 2 Servo-Drives (X & Y Axis), used only on FC750 Machines. Has special Lamp & Control Driver (-300 Type) Board and special FC750 Software on the 2 Prom Boards that will only work on FC750 & FC750/2 Machines.
Built 1979 to 1980, uses #400727-000 Schematics.
--- HECC80/752 Updated HECC80/750 Control with Prom Software, Position Comparator, and Resolver Excitation Board Upgrades to make the Machine Move & Punch Faster. I prefer HECC80/750 Prom Boards in FC752 Machines, because they work Better going Slower.
Built 1981 to 1986, uses #401275-000 Schematics.
I believe the Last FC750/2 Machine was S/N 195050586 built in 1986.
--- HECC80/LC Control for Laser-Center, which was a FC1250/30/1500 Punch Laser Tool Machine, but without the Punch & Turret, and was a Laser Only Machine. Basically a HECC80/1 Control without the Turret Servo Drive Electronics. Special HECC80/LC Prom Boards. Only about 6 of these Controls were built. Built 1980 to 1982, uses #401239-000 Schematics.
--- HECC80/28 Final Type of the HECC80/1 Series. Special Version of the HECC80/1 & HECC80/102 Controls for Laser Tool Machines, & Load / Unload Machines. Also used for the first few (about 11) FC1250/30/1500 Punch Machines with 33-Station Turrets as the HECC80/306 Control being built for it, was not yet ready. Engineering needed to make Software additions to the Machine & Control Executive-Run Program to add Laser Improvements, but the 24K of Storage Space in the 2 Prom Boards were not sufficient for this. So 4K of Ram Memory Space was stolen from the Ram #1 Board (Ram was now 20K Total) and added to the Prom #2 Board for a total of 28K of Prom Program space, hence the HECC80/28 Name. Some earlier HECC80/1 & HECC80/102 Controls on Laser Tool Machines were Retrofitted in the Field to HECC80/28 Status. Build from 1981 to 1986. You have to use HECC80/1 & HECC80/102 Schematics with the "Speed Attenuation Retrofit" Print #401352-888 as Strippit never Bothered to made a set of HECC80/28 Schematics.
--- "Control Shuts Itself Off 2 Seconds After it is Turned-On"
This is the Most Common Control Problem there is.
The Monitor board Checks-All DC Voltages Continuously after Control is Turned-On. If one or more Voltages are Too-High or Too-Low, Monitor will turn Control-Off to prevent possible damage.
Most common cause is a Electrical-Short on Machine, Check for Smashed No-Punch Zone Sensor on X-axis, Cut or Nicked Wires, Etc. Ohm-Out your VDC (Machine 24 VDC) to LVR (Low Voltage Return, Ground), and the 1DC (Machine 12 VDC) to LVR (Low Voltage Return, Ground) on Machine for Short-Circuits. These Machine Power Supply Circuits should Ohm-Out to at Least a Few Hundred Ohms, if Close to Zero, you have a Short-Circuit Somewhere on the Machine, or are reading a Short from Control.
Second Common Cause is a Bad Power Supply #1 Board, Power Supply #2 Board, Master-Monitor Board, or Slave-Monitor Board. Send the 4 Boards in, and we can Test, Repair, and Update them. Other Possible Causes are in the Raw-DC Supplies on the Floor-Plate, and in the Pre-Regulator Panel.
--- HECC80 Controls Hate Heat
First generation Control Cabinets had just Door Exhaust Fans. Then Strippit tried Heat-Exchangers which were just Air-To-Air Radiators. Then they Finally quit being Cheap, and installed 6000 BTU Commercial Grade CNC Cabinet Air Conditioners. These Greatly Improved Reliability. If your Control has a Air Conditioner, make sure it Works! If your Control does not have one, take off Door Exhaust Fans, Seal-Up the Cabinet, Insulate Doors with 4' x 8' Foam-Sheets from a Building Supply Co., and install a Commercial CNC Cabinet Air Conditioner!
Do Not get Cheap, and install a Cheap Window A.C. Unit! They are Impossible to Mount Properly, they Spray-Water into Control, and Do Not Circulate Air Properly Inside Control.
We can Drop-Ship Proper Air Conditioner Units for you to install. See A.C. Unit Photos Below.
Early HECC80's did Not have Fans Under the Cardcage. If you do Not Have These Fans, Make a Bracket, and Mount 2 or 3 -- 4 Inch "Muffin" or "Boxer" Fans Under the Cardcage Blowing Upward!
Also, Make another Bracket (We use 2 Pieces of Angle Aluminum) and Mount Another 4 Inch Fan Under the Power Supply #1 & #2 Boards, Blowing Upward!
--- "Servo Down" Message
Look in Servo Drive Half of the Control Cabinet. There are 3 Servo Drives (2 on FC750's), see if there is a Red-LED Light "ON" on one of the Servo Drives. Red-LED Light is Located on the PWMC Servo-Control Circuit Boards. If so, you have a Over-Current Condition.
Turn-Off AC Power to Machine, then Disconnect the 2 Armature Wires going to that Axis's Servo Motor, and restart Control. If LED does Not come on, Motor is probably Bad.
We Stock Replacement Motors.
If LED still comes On, 1 or More of the 3 (or 2) Servo Boards are Bad.
Send in ALL 3 (2 for FC750) Servo Boards for that Axis, and we can Test & Repair Them,
Then we do a Final Test in 1 of Our 4 Strippit Machines.
--- Tapereaders
All HECC80 Controls came with a Decitek Model 262 Paper Tapereader for Part-Program Loading and to Run Control Trouble-Shooting Test Tapes.
Most, but not all, of these Controls have been Upgraded In-the-Field, to allow Part-Program Data to be Downloaded from a P.C. Computer, which is much more convenient and reliable than Paper Tapes. There are 2 ways to do this Upgrading;
1 -- Upgrade the CPU & 2 Prom Boards (HECC80/1 Controls), or Software-Upgrade (HECC80/30x Controls) to allow RS-232 Downloading directly from a P.C. Computer's Serial-Port to the CPU's J1 Connector using a Special Cable.
Please see Our "P.C. Computer to HECC80 Control Communications" Web Page.
2 -- Use a Tapereader Emulator. The Tapereader's Cable to Control is Unplugged, then is Plugged into Special Connector Cable that goes directly into the Emulator. By definition, a Emulator Imitates the old Tapereader, and the CNC Control never knows the difference.
Both Methods have Advantages & Disadvantages. Machine Technologies can help you decide,
and can Install either type.
If you no longer use your Tapereader, then (with the Control Turned-Off) Un-Plug the Cable from the Tapereader. Then Wrap a couple of turns of Electrical Tape around it (so No one will try to plug it back in) and tuck it out of the way into the wiring harness. The Tapereader uses a Lot of DC Power and makes a Lot of Heat, even if not being used. By Unplugging it, you reduce the Strain on the Power Supplies, put less Heat into Control, and help Preserve the Tapereader for when you may want it for Trouble-Shooting with Test Tapes.
Tapereaders get so Hot that you can Burn yourself just by touching the Black Heatsink around the Motor. This is Normal! But this Heat eventually will Burn-Up the Motor. Tapereaders are Expensive to Repair or Replace. If you still use your Tapereader, then Mount a "Muffin" or "Boxer" Fan underneath it with a L-Bracket, with the Fan Blowing Upward over the Motor Heatsink.
This will Remove Excess Heat, and help prevent Tapereader Failure from Motor Burning Out.
The "A" Control Series
Common Problems & Fixes for HECC80/1 Controls
--- "Checksum Error" on Self-Scan Display as soon as you Turn-On Control.
Almost Always Caused by Failing Prom Boards. These Store the Executive-Run Program which
Runs the CNC Control. The Only Solution is to Send-In the Prom #1 and Prom #2
(in Slots 3 & 4) Circuit Boards for Repairs and Updating to the Latest Software Revision.
On rare occasions, could be caused by a Bad Power Supply #1 Boards, or anything else
causing Intermittent or Bad Power to the Power Supplies.
You can also Try Cleaning the Cardcage Sockets by Spraying them Out with a Good Aerosol
Electronic Spray Cleaner.
Clean the Circuit Board Finger-Contacts with
Rubbing-Alcohol and Cotton Q-Tip Type Swabs Only!!!
Never,
Never,
Never,
Rub Circuit Board-Contacts
with Anything Remotely Abrasive!!!
Or You Will Rub-Off The Very Thin Gold-Coating,
And Permanently Ruin The Circuit Board!!!
I have Updated this
"A" Control
at my Customer
H & W Metal in
Charlotte, NC,
by removing the Original Remex Tapereader, and Retrofitting a TapeTwin Emulator Computer so that it can Read & Store Programs from Disks.
About 400 of these NC "A" Controls (and their Predecessors, the "30S3", "30S4" and "HC") were built from 1975 to 1979. There were other, older NC's built in the 1965 to 1975 Ere, but I will not cover them, as they All Should Be Scrapped by now.
The First FC1000/1 Machines, build in 1975 & 1976, had the First Version in this Control Series, the "30S3". About 30 of these Controls were build. They all had the Westamp Servo PWM Drives, which had a tendency to Burst into Flames, so Strippit was forced to come out with a "Conversion" Kit. To do the Conversion, we Unbolted the Servo Cabinet from the Control Cabinet, and bolted-on a New Servo Cabinet that used the General Electric Hi-Ack Servo Drives, which worked quite well.
Most of these early 30 FC1000 Machines had their Controls Converted, but not all.
30S3 Schematics are #400003-000. Addition Conversion Schematics are #400459-000.
The "30S4" Control was similar to the 30S3, but it always came with Large G.E. Hi-Ack Servo Drives, and was used on the larger FC1250/30 and FC1250/40 Machines only.
Built 1975 & 1976. Schematics #400060-000.
This "30S3 Conversion" and the "30S4" Controls were Improved & Updated, then became the "HC" Control (Houdaille Control). Also known as the "Compatibility" Control, as they were used on Both the FC1000 and the FC1250 Machines.
These Controls were made in 1976 and 1977. Schematics #400200-000.
The "HC" Control was again Improved & Updated, and this became the "A" Control,
the Final Version in this NC Hardwired Control Series. Build 1977 to 1979.
Used #400269-000 Schematics.
Above NC Series of Controls were all "Hard-Wired", and were built with Hundreds of I.C. Chips connected with Thousands of Blue "Wire-Wrap" wires.
Controls has No CPU or Computer or Memory of Any Kind. These Controls Operated by reading the X,Y, and T information 1 Block at a Time from a Paper Tape, acting on this Information, then reading next block to Repeat this Cycle over & over again.
Fanuc Controls
To the Right is the "General Numeric GN6 Control".
It Says General Numeric, but Every Part of it is Fanuc.
This Control also used Reliable Fanuc D.C. PWM Servo Drives which were usually built into Control Cabinet.
This was a very Popular CNC Control that was made through the 1980's. It was a Good Control, and Reliable, but was a Bit Intimidating to Operate, as it has Zillions of Knobs, Switches, Buttons, and Lights, so that it Looked like Tokyo at Night!
Strippit started Phasing-Out their HECC80 Controls in 1986, and Switched over to the GN6 Controls on all FC1000/3 Machines, and later on, the FC1250/30/1500 Machines and their other Big Machines.
Most of the Little Strippit Machines of this Era, like the FC630R & FC1000R, had the Apple Mac & Windows P.C. Computer Controls that Strippit Hacked-Together. These are becoming Nightmares, as Many Parts are No Longer Available, and Strippit Can't Keep Them Running. They have become So Bad, that Strippit had to offer a Fanuc Retrofit, for about $80,000.
Beware of Strippit's
Mac & DOS & Windows P.C. Controls!
The "R" Machines were Also Offered with a Fanuc Control as a Extra-Cost Option instead of the "Mac" Control. But Most Companies Went Cheap, and did Not get the Fanuc Control Option, much to their Regret Now. The FC630R & FC1000R with GN6 or OP Controls are Very Good Machines, but not many were built.
Di-Acro & Strippit also used the GN6 on all the Junk CAP1000 & CAP1250 & HPM1000 Machines they made, until the late 1980's when Fanuc Discontinued the GN6. Then Strippit made a few more CAP-aroo Machines with Fanuc OP Controls, until they Finally Discontinued making these Machines around 1990.
I will briefly talk about Fanuc CNC Controls as they are Now the World Leader in CNC Controls & Servo Drives. This is because G.E.'s "Neutron" Jack Welsh Capitulated, and "Nuked & Closed" All General Electrics's Control & Servo Drive Manufacturing Factories, Allowing the Fanuc Co. to Win the CNC Control Wars.
Fanuc is now the Worlds Biggest Control Maker, and No One Else is Even Close in Size and Scope. So, Like them or Not, They are Here. Thanks "Neutron Jack".
When Fanuc Originally Set-Up their American Division, they called it "General Numeric", a Nice American Sounding Name. This was to Avoid the Japanese Sounding "Fanuc" Name and any Prejudices that may have gone with it. There was Much Government Scrutiny in the 1980's as the Japanese were Busily Taking Over the Machine Tool Industry. They have pretty well Completed this Mission now.
G.E. Partnered-Up with Japan's Fanuc Co.
(Mighty G.E. Becoming More like Fanuc's Lackey-American Marketing Arm, Than a Real Manufacturing Co.) and the General Numeric Name Facade was Dropped.
They then became the "GE Fanuc" Co.
The Next Generation of Fanuc Control was called the "O", and the Punch-Version was called the "OP". It was basically just an
New & Improved GN6.
It had 7 "SoftKeys" under the CRT Display, like Strippit's HECC80/30x Controls had Years Earlier, a Technology that made the Control Much Simpler to Operate & Use.
Control now used AC Servo Drives, which are an Improved Technology over the older DC Drives.
These Controls were built through out the 1990's in several Versions, and all are Good Reliable Controls. Recommended.
The OP's have now been Replaced with the Next Generation of Fanuc Controls, which are called the "Oi". An Evolution of the older OP's, "i"s have some Nice features like Built-in Disk Drives, and LCD-Displays instead of older CRT-Tube Displays. They should be even better than the OP's, and are Recommended.
However, How Good the Control Works Depends on How Good of a Job the Machine Manufacture Does Integrating the Controls Interface to Their Machine.
There are Many Complaints that LVD Strippit is Not Spending Enough Engineering Time on this Critical Interfacing, Which is Causing Many User Operation & Maintenance & Troubleshooting Issues.
I Don't Particularly like the Fanuc Co.
They have Become Arrogant from their Large Market-Share.
Control & Servo Repair Part Pricing is Outrageous.
Some of Fanuc's A.C. Servo Motors are Priced at $10,000 to $15,000
with sometimes Weeks or Months Delivery!
What are You supposed to do with Your Production while Waiting Months?
And some Older Fanuc Control & Servo Drive Parts are becoming "Unavailable".
I think that they are trying to
Drive You into Buying a New Machine with a New Fanuc Control on it!
This is Certainly Not Very World Class.
Fanuc is Very Secretive, and can be Difficult to Work-With.
I have Never met Anyone who has even Seen Fanuc Control Electronic Schematics.
Having said all that, they have Won much of the Worldwide CNC Control Business.
Fanuc makes Good Reliable Controls,
are one of the Biggest CNC Control Manufacturer in the World,
and have a World-Wide Support Network.
And So, Sadly, as there are now Damn Few Alternatives,
( Consider using Bosch and Siemens Controls,
But they are also Very Expensive & Secretive! )
I would be Hesitant to Buy Any New CNC Machine
unless it Had a Fanuc Control.
--- Incorrect Heatsink
Some Chowder-Head at Strippit Designed the Floor-Plate, at the Bottom of Control, with the 2
Stud-Diodes Mounted on a Painted-Steel Heat-Sink that Does Not Dissipate Heat! Diodes get Hot enough to Burn-You if touched! This Heat Causes Diodes to Fail, and also Burns & Corrodes the 2 Wire Ring-Terminal Connections to Diodes. We Replace with a Larger Aluminum Heatsink, and Replace Old Wiring with with New Wires & Soldered-On Ring-Terminals.
This Work Requires New Parts and a Technician that Knows what he's doing!
Mount 2 Fans,
Blowing Upward,
under the Cardcage.
If you have them,
Check them Regularly
to make sure that they
are Working OK.
Mount another Fan,
under the
Lower-Cardcage.
Center the Fan,
Blowing Upward,
so that the Air-Flow
Blows Over the
2 Black Heatsinks
on the
Power Supply
#1 & #2
Circuit Boards.
McLean 6000 BTU Air Conditioner Mounted on a HECC80/1 Control.
Also Note our Concept of a P.C. as a Local File-Server At The Control, with All P.C.'s Power-Plugs to
Power-Strip Inside Control.
Kooltronic 6000 BTU Air Conditioner Mounted on "A" Control.
Also Note P.C.-Based
Tape-Reader Emulator,
Plug-In all P.C.'s Power-Plugs to
Power-Strip Inside Control.
Note! Air Conditioner's Draw a Lot of A.C. Power!
Older Strippit Machines had Only a 3KVA Step-Down Transformer,
to Provide 120 VAC, that Can Not Handle the Extra 15 Amp. Current Draw.
Wire These A.C. Units to an External Power Source.
If your Machine has the 5 KVA Transformer, it will handle the Extra Power,
But Run a Power-Cord all the Way back Directly to the Transformer itself!
Note!!!
Many CNC Controls, like the G.E. 1050's, and Some of the Fanuc's,
Have Machine Parameters, MDI Data, and Other Control & Machine Set-Up Data,
Stored in Battery Backed-Up Memory.
If you Buy a Machine that has Been Stored for a Long Time,
Like in a Dealer's Warehouse,
Without the A.C. Power Being Connected to Control,
The Batteries will Run-Down,
and
All this Data Will Be Lost!!!
Your Control & Machine Will Not Run Until All
Parameters & Set-Up Data Have Been Correctly Restored!
This Data is Sometime Very Hard,
or Even Impossible to get from the Original Machine Manufacturer.
Make Sure you get All the Original Set-Up Sheets, Paper Tapes, or Data Disks,
To be able to Reload this Data!
Or get In Writing a Iron-Clad Guarantee that Machine will Run when you Buy it!
Note! None of the HECC80 CNC Controls have this Problem!
Note, The Failure Modes Here Are;
1 -- Stud-Diodes CR1 & CR2 Overheat & Fail, usually Causing a Short-Circuit and Blowing Fuse FU1.
2 -- About 50% of the Time, the Blown CR1 & CR2 will Also Cause The Diodes CR3 & CR4 to Fail.
3 -- The Blown CR3 & CR4 Diodes will then Cause the Power Supply #1 Board in Slot S4 to Fail.
We have a Repair-Kit Available that Replaces the Old Diodes & Heatsink & Wires with New Parts.
And if the Power Supply #1 is Bad, We Can Quickly Repair it in Only 1 to 2 Days Turn-Around Time.
Our Diode Repair Kit
with New
CR1 & CR2 Stud-Diodes Mounted with Insulators on New
Aluminum Heatsink
with New Wires,
also Includes
New CR3 & CR4 Diodes.
