Arburg ↔ Thermoplay Hot Runner Wiring

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)

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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Thermocouple + Heater Connection Diagram

Connection scheme for a typical dual-zone heating system with two heaters and two thermocouples (usually type K).

Pinout / Terminal Layout - 8PIN connector 7+PE

PIN	OZNAKA / Signal	Description	Typical Wire Color (Type K)
1	Grelec 1	Heater 1 – Live / Phase	–
2	Termočlen 1+	Thermocouple 1 – Positive	Yellow / Green
3	Grelec 2	Heater 2 – Live / Phase	–
4	Termočlen 2 +	Thermocouple 2 – Positive	Yellow / Green
5	Grelec 1	Heater 1 – Neutral / Return	–
6	Termočlen 1-	Thermocouple 1 – Negative	White / Red
7	Grelec 2	Heater 2 – Neutral / Return	–
8/PE	Termočlen 2-	Thermocouple 2 – Negative	White / Red

Notes:

• Pins 1 & 5 → Heater 1 (usually 230 V AC or 24 V, depending on system)
• Pins 3 & 7 → Heater 2
• Pins 2 & 6 → Thermocouple 1 (most likely type K)
• Pins 4 & 8 → Thermocouple 2 (most likely type K)
• Pin 8 is often marked as PE on the connector, but in this case it is used as TC2– (negative leg of the second thermocouple)

Wiring Recommendations

• Use compensating cable (type K compensation) or true thermocouple extension wire for pins 2,4,6,8
• Never use ordinary copper wire for thermocouple connections → causes large measurement error
• Heater wires (1,3,5,7) – use appropriate cross-section according to current (usually 0.75–2.5 mm²)
• Recommended tightening torque: usually 0.5–0.6 Nm (check connector specification)

Visual connection scheme (text version)

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