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TWS 1385 Evo Convection Reflow Soldering Oven With Mesh Conveyor

The TWS Automation 1385-Evo is an innovative, medium-sized convection reflow soldering oven, offering outstanding value for money.

The oven measures 3 metres long (with a 2 metres tunnel) and produces excellent soldering profiles, together with high productivity. The Evo range features a lower power consumption than its predecessors, with ease of set-up and operation, thanks to a new full colour control touch screen. 

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Specifications 

  • Heating & cooling zones Four heating, one cooling
  • Conveyor type Mesh belt
  • Conveyor width 400 mm
  • Conveyor speed Min 100, max 500 mm/min
  • Maximum component height 28 mm
  • Maximum temperature 300°C zone 1, 2 & 3, 350°C zone 4
  • Max delta temp between zones 110°C
  • Power supply 230VAC or 400VAC
  • Power consumption 4kW average, 12kW maximum
  • Dimensions 3000 x 830 x 500 mm
  • Weight 300 kg

Overview

Heating Zones 

Oven is divided into four heating zones, three for preheating and one for reflow. The air convection is directed horizontally by fans that blow the air from the centre of the zone to the surroundings. The window in the hood of the machine enables the user to observe the reflow process in real time, giving useful indications and allowing for thermal profile fine-tuning without using the recorder. The upper part of the soldering tunnel has an easy opening system that enables immediate inspection and cleaning.

Microprocessor 

Air temperature is controlled by a microprocessor through K-type thermocouples placed in each zone, that keeps the temperature between tight limits.

Cooling Zone

Cooling zone is optimised to lower the temperature to the required level without causing unwanted thermal shocks either to soldering joints or to components.
To obtain the best soldering performance, the oven is equipped with a temperature recorder which can be connected to a PC to display the temperature profiles during the soldering process.

Thermal Profiles

Thermal profiles can be obtained (to fulfil even the most complex demands) due to the four heating zones and the digital adjustment of the conveyor speed. Up to 14 programs can be stored and quickly downloaded. The heating elements are controlled by a PID regulator using Burst Firing commutation, complying to EMI standards.

Main Parameters 

Main parameters, which are constantly monitored by a microprocessor connected to the PC LCD display, shows

- Temperature set point, for each heating zone.
- Actual temperature, for each heating zone.
- Conveyor speed set point.
- Actual speed of the conveyor.

TWS 1380 Evo is equipped with a new built-in touch screen colour display with the new following functions:

- “PID” algorithm to ensure a faster temperature adjustment in the four zones.
- Delayed connection of the zone in order to reduce power consumption during the zone heating.
- Possibility to graphically monitor the temperature ranges in all the zones.

Once the operator has set the temperatures, the oven starts to heat up, and the colours showed on the screen represent the actual temperature deviation from the set point.

In the event of a power failure, a back up battery enables the conveyor to continue running until all boards have exited the machine. The machine can also be configured with pin, edge and mesh conveyor. It can be equipped with a support bench sold as optional extra.