Eding CNC CPU5B User manual

XHC Wireless Pendant
Manual
10 November 2016
1
User Manual
3D Print Interface CPU5B
Document Release 1.00

XHC Wireless Pendant
Manual
10 November 2016
2
Published by: Bert Eding
Eindhoven
The Netherlands
Title: Manual 3D printing interface CPU5B
Author: Bert Eding
Date: Thursday, 10 November 2016
Document History
Version
Date
Author
Comment
1
04-01-2016
Bert Eding
Initial version
© Copyright Eding CNC Holding B.V.
All rights reserved. Reproduction in whole or in part prohibited without the prior written
consent of the copyright owner.

XHC Wireless Pendant
Manual
10 November 2016
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Table of contents
Table of contents ..................................................................................................................................3
1Introduction and intended use...............................................................................................4
2Operating instructions ............................................................................................................................5
2.1 Installing the interface................................................................................................... 5
2.1.1 Connections to 3D printer..............................................................................................................5
2.1.2 Connections to CPU5B ...................................................................................................................5
2.1.3 Thermocouple................................................................................................................................6
2.1.4 Voltage to temperature translation...............................................................................................6

XHC Wireless Pendant
Manual
10 November 2016
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1Introduction and intended use
The MPG 3d printing interface is used for:
-Temperature measurement Extruder
-Temperature measurement Heat bed
-Heating control Extruder
-Heating control Heat bed
-Workpiece FAN control

XHC Wireless Pendant
Manual
10 November 2016
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2 Operating instructions
2.1 INSTALLING THE INTERFACE
2.1.1 Connections to 3D printer
1. Extruder heater resistor to upper left 2 screw connectors.
2. Heat bed heater (or SSR) to next 2 screw connectors.
3. Workpiece fan to next 2 screw connector besides head bed heater.
4. Then Extruder thermistor.
5. Then Heat bed thermistor.
2.1.2 Connections to CPU5B
1. Connect 20 Pole flat cable to OUT connector of CPU5B
2. Connect 10 pole flat cable to IN3 connector of CPU5B (Text IN-1 on
interface board is wrong). The extruder thermistor is connected to
ANALOG 1 of the CPU and the Heat bed thermistor to ANALOG 2, you can
see the analog value read in the IO screen of the software.

XHC Wireless Pendant
Manual
10 November 2016
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2.1.3 Thermocouple
The board is standard designed to use 100K thermistors, these are sold by most
3D printer equipment suppliers.
A thermocouple for the extruder temperature may give better temperature
readings/control-performance for the extruder.
This is a thermocouple board from reprapworld.
It can be connected to the thermistor input after removal of R7.
The left screw of the interface board is connected to the temperature output of
the thermocouple board. The right screw is GND.
2.1.4 Voltage to temperature translation
The temperatures are determined from the input voltage via a table. If the
software is started in 3D printer mode for the first time, default tables are
generated in files extruderVoltTempTable.txt and heatBedVoltTempTable.txt.
The file is a list of <volt> <temperature> values.
Volt is the value read in the IO screen, analog 1 is extruder and analog 2 is
head bed temperature sensor voltage. The volt value is a value between 0 and
1023. The temperature is in Degree Celsius. The maximum number of values is
the table is 60. Note that for a thermocouple you will need theoretically only 2
sets of Volt-Temperature values because it is linear.