1 Commissioning[edit | edit source]
The actual commissioning work should now be reduced to only checking the correct wiring and parametrization of the HW Config. After that a function test via WinCC will conclude the commissioning. Unlike the Thyro-AX Controllers there is no need for any software setup! However for more information read the rest of the article.
2 Hardware[edit | edit source]
In the Carlo Gavazzi NRG sub-system, each BUS chain consists of
- one NRGC-PN ProfiNet communication interface
- and up to 32 soild state relays (for now we use the following: RGS1P60CM92GEN HTS431)
3 Terminal Connection[edit | edit source]
3.1 NRGC-PN[edit | edit source]
The headunit needs 24VDC supply voltage and X1 is connected to the PLC or ProfiNet switch. The Micro-USB port is for the bus chain.
3.2 RGS1S60D92GGEP[edit | edit source]
For the solid states we use the following connection type: The Ref terminal is always connected with the return path of the load. When Ref is not connected there is no reading of voltage and real power possible.
3.3 Bus Chain[edit | edit source]
For the internal Micro-USB bus chain, only cables from Gavazzi may be used. These cables have additional channels for the auto adressing function. File:Public:Gavazzi NRG internal cables.png
4 Software[edit | edit source]
The parameter Reference Power is adapted during software commissioning and contains the nominal power of the used IR heater in [W]. When creating the HW Config, a warning is displayed for the software commissioners, advising him to set the Reference Power parameter. This warning always appears when compiling the HW Config and a Gavazzi device is included.
Refer to the following table for the power and softstart current according to the installed IR heater:
Remark: Value for "Soft Start Current Limit Mode" must be multiply by 100.
Example: If your IR heater is 81P01992CH1000O from table above then start current is 42.2 A therefore enter value is 42.4 x 100 = 4240
These Values should be adjusted inhouse. However make sure the correct Power is in the hardware config (see als section Functionality).
The same values need to be adjusted in the WinCC.
5 Visualization[edit | edit source]
The parameter panel is quite similar to the old one from Thyro AX. The help file “_DVC_GAVAZZI_NRG_CTL.pdf” is attached.
Gavazzi uses an internal power controller and we also ramp with 3%/s as it was done for Thyro AX.
_DVC_GAVAZZI_NRG_CTL.pdf
Make sure the nominal Power is the same as you set in TIA.
6 Communication[edit | edit source]
We get 12 bytes of input data from Gavazzi:
- 1. Status Word
- 2. Alarm Word
- 3. Voltage RMS
- 4. Hold Current RMS
- 5. Current RMS
- 6. Real Power
We send one byte of output data: Control Level (0-100%)
Note: For now this is also done with an periphery UDT. But this is a problem for Siemens, see https://mantis.brueckner.com/mantis/view.php?id=166732. There will be a patch for this and the output byte will be written without using an UDT. (As of 24.07.23 This has not yet been resolved)
7 Functionality[edit | edit source]
As switching mode the phase angle firing mode is used. The output control level in % tells the controller how much of each half mains cycle is used.
Remark: When the reference power is set to 0, then the a simple phase angle control is used: The actual phase angle is calculated assuming a pure sine wave voltage and being always constant at nominal level (which is rarely the case in many countries). Brückner prefers the "Power Control Mode". This is activated by input the nominal power of the heater. In this "Power Control Mode" the Garvazzi electronic automatically compares the actual power during the last voltage cycle with setpoint power (nominal power[W]* setpoint[%]) and adjusts the next phase angle acoordingly. This results in constant power [W] also when the line voltage changes or the voltage wave form differs from sine wave.
Whatever mode is used, the input data (Voltage, Current, Power) are correct. This was verified during test at Brückner (MHD + GO)
8 Firmware Update[edit | edit source]
Please find an actual description for the update procedure via this link:
firmware update procedure
The needed GSD- file is here:
gsd file
The manual and tool for updating the NRGC- device (PN- module) is here:
supplier manual for NRGC- update zip with tool for NRGC- update
The manual and tool for updating the NRG_ED- device is here:
supplier manual for NRG- ED update zip with tool for NRG- ED update
If you face problems please contact:
IBN ESC Franz Hoeller
