# Arburg ↔ Thermoplay Hot Runner Wiring
![Wiring Diagram](shematic.svg)


> Proportional regulator / Hot runner interface wiring documentation  
> Date: 11.11.2023

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## Overview

This document describes the wiring between the **Arburg machine connectors** and the **Thermoplay hot runner** connector.  
⚠️ **Important:** Heater zone pinouts and J-type thermocouple (TC) pinouts use **different pin assignments** on each side.

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## Thermoplay Connector Pinout (M / F)
![Arburg Schematic](unnamed.png)
From the Thermoplay connector label (Image 2):

| Function | M-side Pin (+) | F-side Pin (-) |
|----------|---------------|----------------|
| ZONE 1   | 1             | 13             |
| ZONE 2   | 2             | 14             |
| ZONE 3   | 3             | 15             |
| ZONE 4   | 4             | 16             |
| ZONE 5   | 5             | 17             |
| ZONE 6   | 6             | 18             |
| TC 1     | 7 (+)         | 19 (−)         |
| TC 2     | 8 (+)         | 20 (−)         |
| TC 3     | 9 (+)         | 21 (−)         |
| TC 4     | 10 (+)        | 22 (−)         |
| TC 5     | 11 (+)        | 23 (−)         |
| TC 6     | 12 (+)        | 24 (−)         |

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## Arburg Machine Connector Pinout

### Heater Zones (connectors -4X4 / -4X2)

| Arburg Zone | Pin (L) | Pin (N) |
|-------------|---------|---------|
| Heater 1    | 1       | 2       |
| Heater 2    | 3       | 4       |
| Heater 3    | 5       | 6       |
| Heater 4    | 7       | 8       |
| Heater 5    | 9       | 10      |
| Heater 6    | 11      | 12      |

> Each heater zone uses a **pair of adjacent pins**.

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### Thermocouple Inputs —

| Arburg TC | Pin (+) | Pin (−) |
|-----------|---------|---------|
| TC 1      | 13      | 14      |
| TC 2      | 15      | 16      |
| TC 3      | 17      | 18      |
| TC 4      | 19      | 20      |
| TC 5      | 21      | 22      |
| TC 6      | 23      | 24      |

> TC signals are **J-type thermocouples**. Polarity must be respected — reversed polarity will cause incorrect temperature readings.

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## Cross-Wiring Table: Arburg → Thermoplay

| Signal   | Arburg Pin | Thermoplay Pin |
|----------|-----------|----------------|
| Zone 1 + | 1         | 1              |
| Zone 1 − | 2         | 13             |
| Zone 2 + | 3         | 2              |
| Zone 2 − | 4         | 14             |
| Zone 3 + | 5         | 3              |
| Zone 3 − | 6         | 15             |
| Zone 4 + | 7         | 4              |
| Zone 4 − | 8         | 16             |
| Zone 5 + | 9         | 5              |
| Zone 5 − | 10        | 17             |
| Zone 6 + | 11        | 6              |
| Zone 6 − | 12        | 18             |
| TC 1 +   | 13        | 7              |
| TC 1 −   | 14        | 19             |
| TC 2 +   | 15        | 8              |
| TC 2 −   | 16        | 20             |
| TC 3 +   | 17        | 9              |
| TC 3 −   | 18        | 21             |
| TC 4 +   | 19        | 10             |
| TC 4 −   | 20        | 22             |
| TC 5 +   | 21        | 11             |
| TC 5 −   | 22        | 23             |
| TC 6 +   | 23        | 12             |
| TC 6 −   | 24        | 24             |

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## Key Differences — Arburg vs Thermoplay

| Property          | Arburg Side                         | Thermoplay Side                    |
|-------------------|-------------------------------------|------------------------------------|
| Heater pair logic | Adjacent pins (1+2, 3+4, …)        | Split across M/F halves (1/13, 2/14, …) |
| TC logic          | Sequential pairs (13+14, 15+16, …) | Offset by 12 pins (7/19, 8/20, …) |
| TC type           | J-type                              | J-type                             |
| Zones supported   | Up to 6                             | Up to 6                            |

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## Notes

- Always verify wiring with a multimeter before powering up.
- Mislabelled or swapped TC wires will cause **temperature runaway** or zone shutdown.
- Heater zones carry **mains voltage** — ensure the machine is **locked out** before working on wiring.

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![Thermoplay Connector](unnamed1.jpg)

*Document generated from Arburg proportional regulator schematic & Thermoplay connector diagram.*