THYRO-A Thyristor controller

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1 Application[edit | edit source]

This Thyristor controller is used at the MDO IR Heating at PET lines

2 Adjustments[edit | edit source]

2.1 Thyristor controller[edit | edit source]

First we need to adjust the DIP Switches and potentiometer.

Switch off the control voltage
Confirm that the 230V/440V power is off
Take off the front cover. There is a small clip which hold the cover!

With Cover

With Cover
Without cover

Without cover

Adjust the DIP switches according to this table

Switch	Terminal	Setting	Description
S1	1	0
S1	2	1	… 1,2 operating mode (VAR-generalised phase control)
S1	3	1
S1	4	0
S1	5	0	… 3,4,5 control mode (U – control)
S1	6	0
S1	7	0
S1	8	0	… 6,7,8 setpoint input (0-10V)
S1	9	0
S1	10	1	… 9,10 analog output (0-10V not used)

Adjust Poti R201

Measure the Resistance at the Potentiometer Pin 2 and 3 and adjust it to 22kΩ

File:AEG Thyro-A Poti.jpg

Poti R201

This are the default Poti Values, but check it again:

R202 = 31k

R203 = 31k

R204 = 30k

R205 = 20.5k

Install back the front cover and close the clip

Reconnect the 24V supply

2.2 Current switch[edit | edit source]

With this switch we control the current to be sure, the IR Heater is working. Because of the big range from 20 to 100% which we use, it is necessary to adjust this module to the lowest value (10%) to get always the input.

Check with the variable table in Simatic Manager every input of every module!

3 Function Test[edit | edit source]

Switch on the Power and make a function check with various setpoints between 20% and 80%. The current module should give us already the input with 20%.