Strippit Houdaille  HECC80/3  Control Circuit Board Types & Usage
This is a Listing of
Types & Usage
of the
Electronic Circuit Boards in
Strippit Houdaille HECC80/3
Type CNC Controls.

HECC80/3 CNC Controls
were Used on Strippit
Turret Punch Press
Laser Machines
Built in the 1981 to 1987 Period.

The HECC80/3 Type Controls
Look like the Picture to the Right.

If your Control Does Not look
like this Control,  Go to Our
"HECC80 Control Types"
Web-Page to Properly Identify
Your CNC Control!
Note #1.   Strippit Houdaille Circuit Boards have 2 Numbers on them.
The  "Odd"  Number is for a Raw-Blank Board with No Parts Installed on it
and is of No Interest to You or Us.

The  "Even"  Number is for a  Finished Assembly Circuit Board.
Example,  the  "Odd"  Number  #400965-xxx  is for a Blank CPU Board.    We are Only Interested in the  "Even"  #400966-xxx  Finished Assembly Circuit Board Number!

Note #2.   Strippit made Many Different Versions of some of these Boards that are Very Similar,  But are Not the Same!   Pay Close Attention to the Board (-xxx) Dash Numbers!

Note #3.   Some HECC80/1 Boards and HECC80/3 Boards look Similar, 
But are Not Interchangeable!    If you have more than 1 HECC80 Control Machine, 
Make sure the Boards do Not Get Interchanged!
48K Ram Memory Board

#401520-003   48K Ram Memory Board

To Improve Reliability and Reduce Costs,  the 48K Ram Board was made to Replace the 3 -- 16K Memory Boards
that were previously used.

These Boards were used on Later HECC80/30x Controls, and were sometimes Retrofitted to Earlier Controls which Required some
Cardcage Rewiring.

1 Board was used in Control Slot #3.
Slots #4 and #4 were Now Left Empty.

Note,  This is 1 of the Pram Board Family.  The Raw (No-Parts) #401520-xxx Pram Boards were used to make a Whole Family of Prom & Ram Boards,
Hence the Name "Pram Board".
16 K Ram Memory Boards

#400480-600   16K Ram
#400480-700   16K Ram
#400480-701   16K Ram
#400480-702   16K Ram

Early Bubble-Memory Controls
(HECC80/302,  304,  306,  &  BC)
used 3  16K  Ram Memory Boards in
Slots #3, #4, and #5  to give a Total of
48K of Ram Memory for Temporary Part Program Storage.

The 3 Boards were usually of 1 of the 4 Types listed above, but some Controls have a Mix of Various Types.   Some Types were "Improved" Versions for Increased Reliability, and some Types were Just Made to use-up old Stock Boards in Inventory.  Its Best to Replace a Bad Board with the Same-Type.
CRT-Graphics Board

#401384-000  Graphics Board

This was a Hand-Made Wire-Wrapped Board
(Not a Conventional Eched-Copper PC Board)
because of the Low Production Volume,
that was Only Used in
HECC80/BC (Blanking Center) Controls
in Slot #9
that Worked in Conjunction with the
CRT-Controller Board in Slot #8.

I think there is only 1 or 2 Blanking Centers Still Running in the World,  so Information & Availability of this Board is Quite Limited.

Bubble Memory Board

#40135-000  Standard Bubble Memory Board.

Some Boards were Marked with other Dash  (-xxx) Numbers representing Different Software Versions Loaded into them, but the Old Dash-Number Type System is No Longer used on Bubble Boards.  Use Standard Board & Load Proper Software for Your Machine.

The HECC80/30x Controls actually Run under an Old Disk Operating System that Strippit Houdaille Licensed or Stole,  that was called  CP/M.   Strippit Houdaille Renamed  CP/M   "HOS"  for Houdaille Operating System.   CP/M is comparable to the old MS-DOS Disk Operating System, and IBM almost went with it instead of MS-DOS for their P.C. Computers back in 1980.   Had they Done So,  Bill Gates would be about $50 Billion Poorer Today!
In the HECC80/30x Control System,  the Bubble Board is used as a Solid State Disk Drive.   Bubble Memory is Non-Volatile,  Meaning once a Program is Stored on it,
it requires No Electric Power to Keep Programs Stored Indefinitely.

Board has 2 --  128K Bubble Modules on it,  128K for Your Part Program Storage,  and 128K for the System Programs that Run the Control & Machine.   Board goes in Slot #6.

When Running,  Boards are Quite Voltage Sensitive. 
Improper D.C. Voltages or Electrical Noise can cause Board to Dump it's Memory, 
and Control will Start-Up with Various  #DFxx Errors. 
We can usually Repair these Boards,  and Add Modifications to Improve Reliability.

There is More Bubble-Board Problem & Repair Information on Our
Web-Page    "Bubble-Board Problems & Fixes".
Front Panel Controller

#400476-100  Front Panel Controller
        Board,  Slot #7

This is the Board that  "Talks"  to All the CNC Control-Panel Push-Buttons & Switches, Keyboard & Soft-Key Keyboard, and the Tapereader.

If You are using a  M81 Post Punch Delay Programming Code,  the Control Looks at Switch Position on this Board to Determine if You want a  100 MSec. Delay  (Switch Down)  or a  250 MSec. Delay  (Switch Up).

When Replacing this Board, be Very Careful that You Insert the 2 Ribbon Cables in the Correct Slot!   And Do Not Insert Cables
Up-Side Down!   On the Multi-Color Ribbon Cables that were Usually Used,  The 
"Brown WireAlways Goes UP!
CRT Controller

#401124-000  CRT Controller Board,
               Cardcage Slot #8 

This is the Board that Generates the
TTL-Vidio Signals &
Supplies the 12VDC Power
that goes through the CRT-Cable
to the CRT-Monitor Display
Mounted on the CNC Control Door.

2-Port Memory

You have to Understand how the HECC80/30x Controls Work.  They all have 2 Computers Inside Splitting the Work.

The L2 CPU Runs the "Front-End" of the Control,  like the Control Panel Switches, CRT,  Keyboard,  Tapereader,
Part-Program Storage,  Etc.

And the L10 CPU Runs the  "Back-End"
that Runs the 3-Axis Positioning Systems and the Machine Switches & Solenoids.

The 2-Port Memory Board is the "Interface"  Between these 2 Computers.  Each CPU Board puts Data in this Board that it Wishes to Pass to the Other CPU Board.  Needless to say, a Intermittent Bad 2-Port Board can cause Limitless Odd Problems.
CRT Monitor Display

CRT Monitor Display that is Mounted on the Control Door to Provide the "Man to Machine Interface".   Displays Program-Data,  Axis Positions,  Error Messages,  etc.

Strippit has used many Different
Part Numbers for these Monitor Assemblies over the Years, many of which are No Longer used.

And there are 2 Different Yellow Metal Cases that were used,
which Of-Course,  are Incompatible.
CRT Isolator Boards

All CRT Monitors  "Snap & Pop" as the Hi-Voltage (13,000 Volts!)  Intermittently Arcs Inside Assembly.

It was thought that this Arcing was Back-Feeding through the CRT-Cable to the Control Cardcage and was Causing some Bubble Memory Board Failures.  Isolator Boards attempt to Isolate the CRT-Assembly from CNC Control to Stop  "Sparks"  from Disrupting Control.

CRT Isolator Boards were used on Late Model HECC80/30x Controls, and were sometimes added to Early Controls, in the Field, to try to Improve Reliability.

Board  "Hangs"  Underneath the Yellow-Metal CRT-Assembly, and has a Ribbon Cable that goes to L8 CRT
Controller Board,  a Signal Cable that Loops up to the CRT-Assembly,  and a 2 Wire Power Cable that goes Directly to the 12VDC Supply & Ground.
There are at least 3 Types;

#401674-000  Original Type,  
used Isolation Transformers.

#401674-200  2nd-Type, used Opto Isolators Chips for Better Performance.

#401674-100  2-Pot Design, for use with the 2-CRT Boards that were used on the HECC80/BC Control.
#  22069-000  CRT-Exchanged

#402844-000  CRT Assembly,  Old-Style with   "Smooth-Bezel that Sticks-Out"
#402844-000  CRT Assembly,  New-Style with  "Textured-Bezel that is Recessed"

#402848-000  CRT-1 Retrofit Kit,   "Smooth-Bezel that Sticks-Out"
#402848-100  CRT-2 Retrofit Kit,   "Textured-Bezel that is Recessed"

As Everyone Now Uses Big Color Flat-Screen Monitors,  these 12 Inch Monochrome TTL-Input Monitors are No longer in Production, and we have been unable to find a Source of New Monitors.   As they have a Fairly High Failure Rate from the Cheap-Oriental Designs (several different Brands have been used) and the Shock & Vibration from Control being Mounted on the FC1000/3 Machines, this has become a Problem.

However,  We Can Usually Repair or Replace a Bad CRT Monitor.
We Require that you  Send-In All the Following Items,  as it is a System.
1  --  CRT-Monitor Assembly
2  --  CRT-Cable
3  --  CRT-Controller Circuit Board,  Slot #8
4  --  CRT-Isolator Board if 1 was used on your System,  it Hangs-Below the CRT-Cage.

We, and Strippit, have also made another Type of Replacement from Old P.C. Monitors.
These have A.C. Power Cord that Plugs-In to Power Strip or Wired-In to the A.C. Power.
These Monitors do Not use the CRT-Isolator Board, and do Not use the 12 VDC Power.
In the Fine Strippit Tradition of Making Everything Overly Complicated,
There are 4 Types of 2-Ports Boards using 3 Part Numbers.

#401210-000   2-Port Memory Board,  with No Math Chip,  Made for HECC80/BC  (Blanking Centers)  which do Not use the Math Chip.   Board will also work in the other HECC80/30x Controls if you do Not use the "Fab 5" Function.

#401210-100   2-Port Memory Board.  
Early Board made Only for Special Caterpillar HECC80/2 Controls,  which I think do not Exist anymore.    I don't Know what the Differences are on this Board.

#401210-200   2-Port Memory Board.   Standard Board for all the HECC80/30x Controls.  Has Math Chip.   Math Chip is Only used for running the  "Fab5"  Function.
Late Versions of this Board were the  "Multi-Layer"  (4-Layer) Type that appear Black.
Multi-Layer Boards were Built to try to Increase Control Reliability.

Note.  The  "Fab5"  Function is a Carryover Programming Program from the Olden Days Before Modern CAD/CAM Programs.   It Allows a Small Information Macro Program such as a Grid-Program as small as 1 Line,  to be  "Fab5'ed".    Fab5 will then Build a Expanded NC-Run Version of the Original Macro-Information File in Control Memory that now has Hundreds or even Thousands of Lines of Code to Punch-Out a Grid or a Big Perf Job.

Unfortunately,  the Fab5 Function is Not Supported by Any Aftermarket Programming Software as it is Not Needed anymore,  and so is Very Rarely used today.
#400478-xxx Prom Board

Everyone Calls them Prom Boards,  But they are Really Eprom Boards, as Strippit used only Eproms Chips which are
Erasable Programmable Read Only Memory.
Proms & Eproms are Memory I.C. Chips where you can Program-In & Store your Data, and it stays in the Chips More or Less Permanently, even when Power to the Board is Turned Off.

Typically, Prom Boards Store the Executive-Run Programs that Run the Control & Machine.

The HECC80/3  Non-Bubble Board Controls on Early FC1000/3 Machines had a 
#400478-900  Control Prom Board in Slot #3
for the  L3  "Front-End"  CPU.  
The  L10  "Back-End"  CPU used a 
#400478-901  Machine Prom Board in Slot #11.

The Later  HECC80/302,  /304,  /306, and  /BC  Controls all get their  "Front-End"  Instructions from Programs Stored in the L6 Bubble Board.
And  "Back-End"  L10 CPU used Data from the
#400478-905  Machine Prom Board in Slot #11.

Some Early HECC80/302A Controls used a
#400478-915  Prom Board using 16 Eproms.

The #400478-xxx  Boards in the HECC80/30x Controls always used 2716 Type Eproms. There are Many Different Machine & Control Software Versions Stored in these Boards,
and Replacing a Bad Board can be Tricky.
#400520-xxx  Prom Boards

Later HECC80/30x Controls used another Version of the  "Pram"  Board Family.

These Eprom Boards used only  2 --  27128 Type Eprom Chips in Slot #11 for the
"Back-End"  L10  CPU.

#401520-007  HECC80/304 for FC1500/45
#401520-017  HECC80/304 for FC1500/45 3-chip
#401520-107  HECC80/302 for FC1000/3
#401520-117  Some HECC80/302A on FC1000/3
#401520-207  HECC80/BC for Blanking Center
#401520-307  HECC80/306 for FC1250/30/1500
#401520-317  HECC80/306 for FC1250/30/1500,
                       3-Eprom Chip for Level 2
                    Software & -100 Bubble Res-Prom

Note,  There is a Cornucopia of Different Eproms for these Boards depending on Options --  Loader & Unloader,  Plasma,  Laser & Type of Laser Used,  Etc.   It can be Difficult to Replace Boards because of the Many Different Software Revisions & Option Types.
32K Ram Memory Board

#401520-001  32K Ram Memory Board
was the First Board of the Family of 
"Pram"  (Prom and Ram)  Boards.

This was a 32K Memory Board that was Only Used in the Original HECC80/3 
(No Bubble Memory)  Controls on the
First 30 or so  FC1000/3 Punch Machines.

2 Boards were used,  in Slots #4 & #5.

Memory Boards were Power Backed-Up with a Ni-Cad Battery Pack so that they would Retain your NC Part Programs that had been Loaded into this Memory even when the Control was Turned-Off.

Most of these early  FC1000/3  HECC80/3 Controls were Retrofitted in the Field to HECC80/302 Bubble Board Status.
The Cardcage was Rewired,  Memory was Replaced with 3 - 16K or 1 - 48K Memory Boards and a Bubble Board was Added.
CPU Board
#400966-100  CPU Computer Board.

2 of these CPU Boards were used in All
of the HECC80/30x Controls,
1 in Slot #2,  and 1 in Slot #10.

All Boards were Set-Up for RS-232 Input.

Most CPU Boards were the Standard
2-Layer Type,  But some Later Boards were the 4-Layer Type  (2 Signal Planes, a Power-Plane, and a Ground-Plane)  and Boards appeared Black, because Light would Not go through these Boards.   4-Layer Boards are Considered More Reliable than 2 Layer Type.

CPU's are the
"Computer Brain"  of the Control,
if they are Not Working,  Nothing will Work!
In Normal Operation,  there will be
2 Green-LED Lights "On",  and the
3 Red-LED Lights will be Very-Dim or  "Off".
This page was last updated: February 7, 2009
General Propose I/O Boards

The G.P. I/O (Input/Output) Boards are How the L10 CPU Machine Computer Receives Signals from Machine Switches, and also Issues Commands Back-Out to the Solenoid-Drivers to the Machine.

#400790-200  Slot #12 in HECC80/302 & 306,
                      Slot #14 in HECC/BC Controls.

#400790-201  Slot #13 in HECC80/302 & 306,
                      Slot #15 in HECC80/BC Controls.

#400790-204  Slot #12 in HECC80/304

#400790-400  Slot #13 in HECC80/304 for
                       Thermal Dynamics Plasma?

#400790-500  Slot #13 in HECC80/304 for
                       Hypertherm Plasma?
I/O Isolator Boards

These Boards Provide
Opto-Isolator I.C. Chip Isolation between the Control & Machine to
Help Prevent Various Problems like Electrical Noise and Ground-Loops.

There are 2 Main Types;

Input Isolators which Connect to the Machines Switches & Sensors.

Output Isolators which Drive the Machine Solenoid Valves.

#400788-300   24-Output Isolator Board with 21 Transistor Solenoid Drivers,
and 3 with Opto-Isolator Outputs which are Used to Remove the 3 Servo Drive Inhibits.

#400788-400   24-Input Isolator Board.

#400788-500   ???

#400788-600   24-Output Isolator Board with 24 Transistor Solenoid Drivers and has 2 Diode Back-EMF Suppressor Diodes on Each Driver Output.
Used on  "Cell-Systems" ???


Different Types of  Boards had Different Numbers of Eproms.

L11 Machine Prom Boards Usually had 11 or 12 Eprom Chips.
Board Pictured Above is 1 Example of this Type of Eprom Board.
Note #1,   Early Boards were Very Sensitive to Humidity,  and Inputs & Output could be "Fired"  by Even Breathing on them!   Later Boards had Extra Resistors Added to Opto Chips to Decrease this Sensitivity.

Note #2,   Early Boards had Screw-Terminal Strips on Board's Wire Inputs.
So it was a Pain In The Ass to Swap Boards for Quick-Testing as Each Wire had to be Individually Removed & Reinstalled on New Board. 
Later Boards had Quick-Disconnect Wire-Connectors so Board could be Simply Unplugged.    Be aware of this when Ordering a Replacement Board.
Position Comparator Board

This Board Compares the CNC Control's Axis Position-Command and the
Actual Axis-Position, 
and Generates a Error-Signal for the
Phase Analog Board & Servo Drives to
Use to Move to the Commanded Position.

#400474-100   Axis Control Board,
this 1 Type was used in
All the HECC80/30x Controls.

Used in the Following Cardcage Slots;
X -- Axis Board in Slot #  19
Y -- Axis Board in Slot #  20
T -- Axis Board in Slot #  21

Note!  The Switch is Only used in a Certain Test Procedure that You the Customer, will Never Use.  In Normal Operation, It Does Not Matter if Switch is Up or Down, 
But I Normally have All 3  "Down".
Axis Control Board

#400470-100  Axis Control Board

Only this 1 Type was used in All
the HECC90/30x Controls.

Used in Following Cardcage Slots;
X -- Axis Board in Slot #  16
Y -- Axis Board in Slot #  17
T -- Axis Board in Slot #  18

Axis Control Boards
contain the Logic that Initiate and Control Axis Moves.

Phase Analog Board

The Phase Analog Board Converts
the Position Comparator Board's
Error-Pulses into a 
D.C. Analog Voltage for the
Axis Servo-Motor Drives to use.

As there are Many
Differences & Variations in Components & Machine Axis,
there are 3 Pots (Potentiometers)
to Adjust  &  "Tune"
each Axis for Proper
Positioning Characteristics.

#400482-400  Phase Analog Board
is used in all HECC80/30x Controls
in Slot #22
Resolver Excitation Board

The Resolver Excitation Board
Generates the Sine & Cosine Signals
that are used
to Excite the Resolvers in the
Position Feedback Packages
on the End of Each
(X, Y, T)  Axis Servo Motor.

#401272-000   Resolver Excitation Board,                    3MHZ Sine-Wave Type. 

This Board was used on all
HECC80/30x Controls in Slot # 23.
Monitor Boards

There were 3 Different Type of Monitor Boards used in the HECC80/30x Controls.

#401194-000   Used Only on Early FC1000/3 Machine's HECC80/3 (Non-Bubble) Controls.

#401194-100   Used on All Early HECC80/30x Bubble-Memory Type Controls.

#401194-240   Used on Late HECC80/30x Bubble-Memory Type Controls.

The 3 Board Type are Not Interchangeable.

Board was Mounted on the Power Panel on the Side or Back of Control Cabinet.

Monitor Board has 2 Main Functions;

1  --   If the 3-Phase A.C. Power to Machine is On,  then this Board is Powered-Up with it's Green LED Light ON,  and is Ready to
Turn-On the Control when you Push the System-On Button.

2  --   When Controls is Turned-On, 
the Monitor Board  "Monitors"  the
Control's D.C. Voltages.  
If any of them are Too High or Too Low,  Board will Turn-Off Control to Protect itself.
Softkey Keyboard

#401390-000  Softkey Keyboard

8-Key Keyboards are Mounted Directly Below CRT Monitor.

Each Key is  "Labeled"  on the CRT above, and Key's Name & Function Changes depending on the Control Mode at that Time.
Indicator Bank Board

#401620-000   Indicator Bank Board
is a Group of  "Idiot Lights" 
that the Control, 
Through the G.P. I/O Boards,
Tries to Tell you Something like  "Load Position",  "Axis Limit", 
"Servo Overtemp",  Etc.

Board is Mounted on Back of Control Door, and Shines through the Control Front Template.

Board uses Soldered-In  #CM7362 
5 Volt D.C.  Light-Bulbs,
that are often Burned-Out,
and are a Bit of a Pain to Replace.
Continuous Contour Board

#400888-100  Continuous Contour Board
Is a Dedicated Computer that Calculates Small X & Y Moves Continuously to
Allow Laser and Plasma Machines
to Make Smooth X & Y Axis Movement
for Cutting Purposes.

Board is Used in Slot # 14.

At Left is the Original  #22359-000  Microswitch Keyboard that was Custom-Made for the Strippit Houdaille HECC80/30x Controls.

These Keyboards are Not Usually Repairable,  and are No Longer Manufactured.    As Controls are Unusable without a Good Keyboar, this is a Problem.
Power Supply

Below is the Deltron Power Supply that was used on Early HECC80/30x Controls.   They had some Reliability Problems as they were often Shook-Apart by the FC1000/3 Vibration. 

They were Replaced with the More Rugged  L.H. Type Power Supply show at the Left.  These Power Supplies were Further Ruggedized by Strippit by Adding Wire-Ties & RTV-Silicon to any Component that could Move & Break.

We Stock these ##401491-000  Power Supplies.
More Information on these Power Supplies and their Voltages Settings,  go to Our Web-Page
"Bubble Board Voltage Adjustments and Fixes".
Extender Board

#400322-000  Extender Board

Used by Service Technicians to Extent-Out of the Cardcage
a Circuit Board so that it can be Probed & Tested
with Volt Meters & Oscilloscopes.

Every HECC80 Control Build
Shipped from the Strippit Factory
with 1 of these Extender Boards
in it's Cardcage.

Transition Boards

#400880-xxx  Transition Boards were made in Many Different Versions for the Various HECC80 Control Versions.

These Boards were used to "Transition"  between
Hard-Wiring From Panel Switches, Tapereaders,  Etc.  to Ribbon Cables to take Signals to the Control Boards.

At the Back of this Board is the Infamous  "Thumb-Wheel" Rotary Switch that is Used to Set RS-232 Baud Rates,  That Many Customers Can't Seem to Find. 

Every HECC80 Control has One.  We Set Thumb-Wheel to  "A"  for 2400 Baud which Works Well on the HECC80/30x Controls.
Top Softkey Keyboard is the Later  "B"  Type.    Lower Keyboard is Earlier  "A" Type.
Difference is in the Mounting to the Control Door.

More Information is on my   "Special HECC80 Parts"   Web-Page,  Look there!
New Softkey Keyboards are Not Available,  But We Can Repair them in Only 1 to 2 Days.
To Fix this Keyboard Problem, 
We have Engineered a New Replacement Keyboard.

The New Machine Technologies Keyboard Covers the Old Keyboard Panel Hole,  Plugs Right into the Old Cable, and can be Installed in Under 10 Minutes.

Much More Information is on our
"Special HECC80 Parts"  Web-Page.
Update!    We Now Have Brand-New Made in the U.S.A. CRT Monitor Displays
In-Stock!    Call if you need a New Display for your Control!