Wire temperature controller for Mach3

The Kanthall module is designed to regulate the heating level of the resistance wire in various types of thermal plotters. It is designed to work with the SSK-MB1 and SSK-MB2 motherboards. The control is carried out using a PWM signal (pulse width modulation). therefore, the module will work correctly with the programs. controllers with PWM output.

ARK 1.5 mm² connectors with a maximum voltage of 250V and a forward current of 16A were used to make connections to external devices. Components. from which the Kanthall module is made meet the European Union's RoHS directive (Restriction of use of certain Hazardous Substances) regarding environmental protection. The device is made using lead-free technology. The binder used to assemble the device contains 99% tin and 1% copper.

• low cost.
• small dimensions.
• 12VDC power supply.
• aesthetic workmanship.
• easy assembly.
• favorable price/quality/opportunity ratio.

The dimensions from the table are marked in the drawing below:

We can connect the Kanthall module to both. produced by our company. motherboards, i.e. SSK-MB1 and SSK-MB2. In the case of the second one. To connect the transducer, we use the J15 connector (SP/KH "OUT" - connect it to the "IN" input of the module. We do the same with the ground "GND" of both boards). To power the Kanthall, we can use the J14 connector (+12V) located on the SSK-MB2. In the case of the SSK-MB1 motherboard, we use the AUX input/output. Pin 1 is the output of the SP/KH control signal (14 pin of the LPT socket). Connect the "KANT" output of the module to one of the ends of the resistance wire. Connect the other end to the positive wire power supply. The PGND input is the ground of the wire and module power supply.

To configure the Mach 3 program to work with the resistance wire temperature control module, we follow the following logic. In the Mach3 program, in the Config menu, select the Ports and Pins option. In the Spindle Setup tab, we set how the program should control the module. In our case it will be PWM.

The next step will be to change the settings in the Motor Outputs tab. We turn on the spindle option. enter the port and pin number. from which we will control our module. In our case, it will be pin number 14 (according to the print on the SSK-MB2 board). The Step LowActive option allows us to reverse the logic of the Kanthal module.


The program allows you to define the so-called "translations". To. To do this, select the Configuration menu. and then Spindle Pulleys.


We suggest entering 100 in the maximum speed field and 0 in the minimum speed field. This can then be treated as the power supply expressed as a percentage. i.e. for 100 it will mean this. that the wire is permanently powered (which will allow it to reach its maximum temperature). while for 0 the wire will be cold (no power). Step LowActive option in the Motor Outputs menu. Changing this option allows you to reverse the module's operating logic. i.e. for 100 the wire will be cold. while for 0 the wire will be permanently powered.

To correct the temperature, use the buttons located in the lower right corner of the main program window. The controls look like this:

• first, enter the parameter value (for example, it will be 100). This parameter determines us. how hot the wire should be. with the maximum heat level determined in the gear window.
• turning on the wire heating. click the Spindle button (or F5). The S-ov parameter determines the current hot level of the wire.
• By clicking the "-" and "+" buttons, we can adjust the wire heating level.

In case the Kanthall module does not work properly. the first step should be to check whether the problem is electrical or mechanical (lack of connections). It is important to. to document every step in solving the problem. You may need to use this documentation at a later date. and the details contained therein will greatly help our Technical Support employees solve the problem. Many errors in a traffic control system can be related to electrical noise. software errors in the control device or errors in cable connection.

R1 – 4k7 Ω.
R2 - 10 kΩ.
R3 – 100 kΩ.

T1–BC 547.
T2 – IRFP 260N.

J1...J3 - ARK connectors.

We recommend starting the assembly by soldering the smallest elements. i.e. jumpers (marked with straight lines). then we move on to larger and larger resistors. diodes. transistors etc.

Installation personnel must have basic knowledge of how to handle electrical equipment. The device should be installed in closed rooms in accordance with environmental class I. with normal air humidity (RH = 90% max. without condensation) and temperature in the range of 0°C to +50°C.

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