REVCON RHF User manual

Version 2/2023
Commisioing guide
Harmonic Filter RHF-Active
Software configuration guide

Content
1RHF-Active commissioning guide
Content
1. Important Information ............................................................................... 2
1.1 About the manual........................................................................................................................... 2
1.2 Terms and definitions..................................................................................................................... 2
1.3 Working principle – RHF-Active...................................................................................................... 2
2. Connection................................................................................................. 4
2.1 Required hardware......................................................................................................................... 4
3. Home ......................................................................................................... 8
3.1 Home page ..................................................................................................................................... 8
4. Settings ...................................................................................................... 9
4.1 Settings – Device ............................................................................................................................ 9
4.2 Settings – Angle ............................................................................................................................ 12
4.3 Settings – Harmonics (odd) .......................................................................................................... 13
4.4 Settings – Harmonics (odd/even) – fine-tuning harmonics ......................................................... 14
4.5 Settings – Harmonics (even)......................................................................................................... 15
4.6 Settings – Calibration.................................................................................................................... 16
4.7 Settings – Debug........................................................................................................................... 17
4.8 Settings – Connection................................................................................................................... 18
5. Data ..........................................................................................................19
5.1 Data – Grid.................................................................................................................................... 19
4.2 Data – Load................................................................................................................................... 20
4.3 Data – Power ................................................................................................................................ 21
4.4 Data – Filter .................................................................................................................................. 22
4.5 Data – Filter .................................................................................................................................. 23
4.6 Data – I/O ..................................................................................................................................... 24
6. Record.......................................................................................................26
6.1 Record - Ongoing/cleared alerts .................................................................................................. 26
6.1 Possible alerts and troubleshooting............................................................................................. 27

1. Important Information
RHF-Active commisioning guide 2
1. Important Information
1.1 About the manual
This commissioning guide shall ensure help the commissioning of a REVCON RHF-Active and
explains the individual functions of the RHF-Active software and parameters. Commissioning of
active filter should be handled by an electrical engineers with experience in active filter
commissioning and they should have solid experience working with harmonics.
1.2 Terms and definitions
Filter module
For „Filter module REVCON RHF-Active“ the term „Filter module“ will be used.
Drive controller
For the frequency inverter which is used together with the power feedback unit in the following
the term „Controller“ is used
Drive system
For a drive system with harmonic filter, power feedback units, controller and other components
of the drive system in the following the term „Drive system“ is used.
1.3 Working principle – RHF-Active
In order to commission the active harmonic filter, a good understanding of the working principle
is mandatory.
The following picture is showing the basic topology and the working principle of the RHF-Active.
Active Harmonic Filters are parallel filter circuits injecting harmonics into the supply. These
Harmonics have phase shift of 180° compared to the harmonics in the system. Therefore, the
injected Harmonics are eliminating the Harmonics seen from the mains supply.

Content
3RHF-Active commissioning guide
The following picture helps to verify the principle.
The result of the above shown harmonics is 0. The harmonics from load side are compensated by the
RHF-Active injected harmonics. As a result, harmonics upstream of the RHF-Active will be low.
The RHF-Active will inject a harmonic current of same amplitude and frequency, but reverse angle into
the connection point. Therefore, the theoretical result of the THDi upstream of the RHF-Active is 0%,
assuming that the filter is sized for the full THC (Total Harmonic Current).
Nevertheless, the expected result is depending on many different factors such as:
-Grid-Load-Resonances - resonance frequency can typically not be fully eliminated.
-Measurement deviation – The true harmonic amplitude and angle is not the same as the
measured harmonic content (reduced by high accurate measurement).
-Filter accuracy – Even though the RHF-Active is based on the most accurate hardware topology,
100% accuracy is not possible. Therefore, there is always a deviation between measured value
and injected value.
-Load THDi value – The THDi is a ratio of harmonic current to fundamental current. When the
Load THDi high, this will result in higher THDi result after compensation.
-30
-20
-10
0
10
20
30
5 7 11 13
RHF-Active Load

2. Connection
RHF-Active commisioning guide 4
2. Connection
2.1 Required hardware
For connection of the RHF-Active, a RS485 to USB converter is required.
2.2 Software
For connection of the RHF-Active to the PC the latest RHF-Active PC software should be used.
This can be downloaded from www.revcon.de or requested from [email protected]
During download of the software, please ensure your antivirus software is not changing the
name or delating the exe file: “RHF-Active-SiC.exe”. Execute this exe to start the software. The
following Login for easy access can be used:
Login: 01
Password: 010101
Higher access level can be requested from REVCON.
NOTE: While entering values in the RHF-Active configuration software, the values must be
confirmed by pressing enter! Without this step, the value will not be written into the RHF-Active.

Content
5RHF-Active commissioning guide
2.3Connection – PC to filter module
For connection of the RHF-Active to the PC the latest RHF-Active PC software should be used.
In order to establish the connection to the filter module. Got to: “Settings” → “Connection”
1. “Port Check”
2. Choose correct “serial port”
3. “Baud rate” should be set to 19200
4. “Connect” with either individual filter or system level (see chapter parallel connection)
5. Press “Connect”
6. Verify: “Disconnected” turns to green “Connected”

2. Connection
RHF-Active commisioning guide 6
2.4 Connection – Parallel setup
RHF-Active filters rated >55A are constellation of parallel setups. When ordered this way the
filters will be set for parallel operation by factory. Settings can be changed in system level. If the
compilation of active filters are changed, it can be necessary to follow the parallel setups.
Step one: Configure the MOBDUS address.
1. Connect RS485 connector to device 1 of your setup (other filters must not be connected)
2. Connect to filter as described in previous chapter.
3. Add “1” into “Device address”. Press enter.
4. Disconnect RS485 connector from device 1.
5. Connect RS485 connector to device 2 of your setup (other filters must not be connected)
6. “Connect” to filter.
7. Add “2” into “Device address”. Press enter.
8. Proceed for required number of parallel units.
After these steps, all filters can be connected via RS485 connection. Individual filters can be
addressed by using the filter selection menu.
Changes performed in “System” Level will result in changes on all connected filters. Changes
performed in 1-16 will result in changes on the equivalent filter with the corresponding Modbus
address 1-16.

2. Connection
7RHF-Active commissioning guide
Step two: Configure individual filters for parallel operation:
In order to run RHF-Active in parallel, the individual filters must be set to the correct total
compensation current connected (“Parallel total comp. Current [A]”).
This setting can be done in system mode.
E.g.
RHF-Active 220-480-50/60-20-A is an active filter for 220A. This is a compilation of 4 x RHF-
Active 55-480-50/60-20-A. The Total “Parallel total comp. Current [A]” is: 220.
RHF-Active 70-480-50/60-20-A is an active filter for 70A. This is a compilation of 1 x RHF-Active
55-480-50/60-20-A and 1 x RHF-Active 15-480-50/60-20-A. The Total “Parallel total comp.
Current [A]” is: 70.
RHF-Active 350-480-50/60-20-A is an active filter for 350A. This is a compilation of 2 x RHF-
Active 150-480-50/60-20-A and 1 x RHF-Active 100-480-50/60-20-A . The Total “Parallel total
comp. Current [A]” is: 350.

3. Home
RHF-Active commisioning guide 8
3. Home
3.1 Home page
The first page of the RHF-Active is “Home” This page gives an overview of considered
interesting values, such as “Voltage”, “Grid Power”, Grid current” and “Load current”
Run
Set the unit into operation
Shut down
Turn of operation
Clear fault
Delate fault (e.g. after EPO – Emergency Power Off).

4. Settings
9RHF-Active commissioning guide
4. Settings
4.1 Settings – Device
The Device settings are mayor function paramaters of the RHF-Active. It is recommended that
these paramters are only changed while RHF-Active is “Shut down”
Run
Set the unit into operation
Shut down
Turn of operation
↓CSV
(download) - Saves the current parameters into a CSV to be
stored on PC.
↑CSV
(upload) – Uploads a CSV parameter list into the machine.
Compensation Priority
H: Harmonic mitigation only
HR: Harmonic mitigation and fundamental reactive current
(Priority Harmonics)
HRU: Harmonic mitigation, fundamental reactive current, and
current unbalance (1. Priority Harmonics 2.Priority fundamental
reactive current)
Self aging: For factory use only!