Static bonding becomes intelligent! (IQ)
A newly introduced IQ Com Generator converter makes is possible to connect any existing CM5 charging generator to the Manager IQ Easy or Extension IQ Easy.
Many settings, parameters, warnings and alarms are available. But MOST IMPORTANT, it is now possible to pair the CM5 with a Sensor IQ Easy to enable Closed Loop Feedback charging.
Charging materials to create a bonding force to assist in various processes can be difficult to manage.
By applying a fixed high voltage to a charging electrode, mounted at the right distance with a reference potential at the other side sounds easy. However the resulting static charge on the material can change dramatically when conditions change. Speed of the material, friction and separation from an iddle roller, polution or wearing of the electrode pins, change of material, humidity, electrode distance are some of the main factors.
When f.e. a charging electrode is supplied with 10 kV it the resulting charge on the material can easily vary between 5 and 20 kV. This can lead to unwanted situations and needs constant monitoring of the charging effect and setting new setpoint charging voltages.
The solution is here:
A CM5 charging generator connected to the Manager IQ Easy through the IQ Com in combination with a Sensor IQ Easy, placed downstream of the charging electrode, enable closed loop feed back charging.
What is closed loop feed back charging (CLFB)
The Sensor downstream measures the static charge on the moving material at 1 to 16 positions and communicates the values with the IQ Com. An intelligent agorithm will evaluate the measured value against the desired charge on the material (setpoint) and correct the output of the charging generator until the measured value is equal to the desired charge.
The graph shows an example of a realistic application.
The [Setpoint web voltage] is set to 10 kV. This means 10 kV static web charge is desired on the surface.
The [Output voltage limit] is set to 20 kV to try prevent the web charge to go over 20 kV.
You can see the real output voltage of the static generator fluctuating depending on environmental conditions.
F.e. if the speed of the material increases from point 11 on it may happen that the output of the generator is limited to the [Output voltage limit] of 20 kV but the real voltage on the material will drop below 10 kV because more charge is needed.
In that case, when the real web charge drops below [Warning minimal level] (9 kV) a warning will be generated and indicated. Equally when the web charge drops below 8 kV an Alarm will be generated.
Warnings and alarms can be set for the Sensor IQ Easy to guard if the desired charge on the material can be reached.
IQ Com generator converter
The IQ Easy system including the IQ Com generator converter
gepost op Tuesday 18 April 2017 door Bram Vangheluwe in Publicaties
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