Official Web Site

https://www.jelsystem.co.jp/en/□ Outline of SSR

3□ Heater Load4□ Injection Molding Machine6□ Mold Temperature Control

7□ Chiller

8□ Reflow Oven

9

□ Packing Machine10□ Elevator

11□ Printing Machine122

A solid state relay (SSR) is a non-contact semiconductor control component where the input sideand output side are isolated like an electromagnetic relay (EMR), and the semiconductor device thatuses a semiconductor element for the electrical circuit switch to make it non-contact.

THE SOLID STATE RELAY TECHNOLOGY
made in JAPAN for more than 50 years !

3

Temperature Controller
Temperature Sensor
Input℃ : Degree
temperatureControl
OutputHeater PowerHeater

Solid State Relay

T : Time

How to control “temperature” by Solid State Relay？
1. Attach a temperature sensor to the target cooker and measure the temperature.
2. If the measured temperature is low, SSR turn on and the heater will heat up.
3. If the measured temperature rises, SSR turn off and the heater will stop heating.
Maintain the set temperature of the cooker by repeating step 2 to step 3.

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KEY POINT of “heater control”℃ : DegreeOvershoot℃ : Degree

Undershoot

T : Time

PID control

T : Time

The temperature controller controls the current temperature and the targettemperature so that they match, however the temperature of the “cooker” changes
constantly depending on the ambient temperature and the input of ingredients etc.
As the right figure, in order to reach the target temperature under various conditions
without overshooting, it is necessary SSR control.
(※ The figure is just an example)

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“Injection Molding Machine” is able to create some products by synthetic resin.
For example, plastic bottle is made by this machine. As below figure, Plastic
Pellets is thrown from Hopper and it will melt by heater. After that, melted plasticpellets will be injected to the mold by screw and generated by here.

HopperPlastic Pellets

Screw

Temperature Controller

HeaterHeater Power

HeaterSolid State Relay

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Mold Temperature Controller

Controlling temperature

HeaterInjection Molding Machine[ Mold Temperature Controller ]Water or oil is heated by a heater andforcibly pressed into the mold with apump while maintaining an appropriate
temperature.
And heat is exchanged between the heatmedium (water or oil) and the mold.
It will eliminate manufacture irregularity
products by keeping the temperature ofthe mold.

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A chiller is a machine that circulates water to control the temperature of a machine(part of the machine) such as chilling or heating. Water circulate by adjusting thetemperature of the water using a refrigerator or heater. It is aimed primarily at chilingbut also, tap water may chill the machine. As this figure, the hopper of injection
machine is been chilling by running water.
Switching Valve
HeaterRunning water

Cold water
Hot water
Refrigerator8

The reflow oven is soldering machine that has been soldered “cream solder” atnormal temperature in advance must be heated and melted later for soldering.
PartsCircuit
Board

CreamSolder

Reflow Oven
Heater
Before Reflow

After Reflow

Heater Power

HeaterSolid State Relay

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Packing machine is that automatically packs some products, especially it is used
when wrapping food. As picture below, it is wrapping by sealing at heater. So it ismost important things is strict temperature control.
HeaterHeater Power

Solid State Relay

Pillow Packing Machine

It is sealed by heater

10SSR are used to control “Push Buttons” and “Lighting of floor display" in theelevator.

Lighting of floor display

SwitchPower-supply(DC or AC)

Input

SSR
OutputPower-supply(AC)Push Buttons

11SSR is used to switch “induction motors” in commercial printing machine.
Printing Flow

Printing Machine

Cut

OutMotorSwitch

SSR
Input

Power-supply(DC or AC)

OutputM
Power-supply(AC)12