VONSCH VQfrem 400
VONSCH VQfrem 400 protocol
Supported device types and versions
The protocol is used for communication with vector control frequency converters VQfrem 400 (for 3 x 400 V motors) from VONSCH. Reading values from inverters is supported. Commanding or writing values is not supported.
Communication line configuration
Communication line category: Serial, SerialOverUDP Device Redundant (serial communication).
Note: serial communication has been tested with a VQfrem 400 with 609h firmware.
Serial line setting: 19200 baud, 8 bits, no parity, 1 stop bit, RS-485 interface.
The serial line speed is configurable on the drive (2400 - 19200 baud).
Communication station configuration
Communication protocol: VONSCH VQfrem 400.
The station address is a 16-bit number (1-32767). It can be entered decimally (e.g. 1 or 1234) or hexadecimally using a hash (e.g. #0001 or #4D2).
Address 32768 (#8000) serves as a broadcast for commanding - all devices receive it, but none respond to it.
Station protocol parameters
Communication station - configuration dialog box - tab Protocol parameters.
They influence some of the optional parameters. You can set the following station protocol parameters:
Table 1
Parameter | Meaning | Unit | Default value |
|---|---|---|---|
Full Debug | Logging of detailed debug information about communication in the line log. | - | NO |
Retry Count | Maximum count of request retries. If no response returns after a request had been sent, the station's status will change to a communication error. | - | 2 |
Retry Timeout | Timeout before resending a request if no response has been received. | ss.ms | 0.1 |
Wait First Timeout | The delay after sending the request and before reading the response. | ss.ms | 0.1 |
Wait Timeout | The delay between the response readings. | ss.ms | 0.1 |
Max Wait Retry | The maximum number of retries of the response reading. | - | 6 |
I/O tag configuration
I/O tags: Ai, Ci
I/O tag address
The address of the I/O tag is a 16-bit number (1-65535). It can be entered decimally (e.g. 1 or 1234) or hexadecimally using a hash (e.g. #0001 or #4D2).
Table 2 - quantities available for reading according to the documentation
Address | Description | Meaning |
|---|---|---|
#0001 | Software version | 609h for ver. 6.09, (402h for ver. 4.02, 304h for ver. 3.04) |
#0004 | Voltage range | 190h for 400V, 191h for 400 ...M, 2b2h for 690V |
#0025 | Freq. INV - the frequency of voltage on converter’s output (stator frequency) | +/- XXX,XX Hz |
#0026 | Revolves - output revolutions of the motor | +/- XXXX rev/min |
#0027 | Revol/i - evolutions behind gear/transmission | +/- XXXX,X rev/min |
#0028 | Freq.RT - rotor frequency (evaluated from speed encoder – IRC) | +/- XX,XX Hz |
#0029 | Freq.RF - required converter frequency | +/- XX,XX Hz |
#002A | MT Curr. - effective current value into the motor | XXX,X A |
#002B | R.torque - required mechanical motor torque | +/- XXX,X Nm |
#002C | Torque - mechanical motor torque | +/- XXX,X Nm |
#002D | Mag. flux - rotor magnetic flux | X,XXX Wb |
#002E | Volt. MT - momentary motor supply voltage (100.0% responds to 400 V) | XXX,X % |
#002F | Volt. DC - real voltage of converter’s unidirectional DC bus | XXX V |
#0030 | Inp.pow. - momentary input power into the motor | XXX,X kW |
#0031 | MT power - motor power | XXX,X kW |
#0032 | kW hours - motor energy consumption in kWh | XXXX kWh |
#0033 | MW hours - motor energy consumption in MWh | XXXX MWh |
#0034 | Teplota chladiča meniča | XX,X °C |
#0035 | Temp.INV. - air temperature in the converter | XX,X °C |
#0036 | PR ref. - required value of process regulator | XX,X % |
#0037 | PR real - feedback of process regulator (real value) | XX,X % |
#0038 | Inp. AIN1 - the value of analogue input AIN1 in % range | XX,X % |
#0039 | Inp. AIN2 - the value of analogue input AIN2 in % range | XX,X % |
#003A | Hodnota analógového vstupu 3 v % rozsahu | XX,X % |
#003B | BIN 1-6 - status of binary inputs BIN 1 - BIN 6 (bits 0-5 from the received value - bit numbering is from 0 to 15). | 0=input is open |
#003C | RELAY 1-2,3 - the status of relay inputs RELAY 1 - RELAY 4 (bits 8-10 from the received value - bit numbering is from 0 to 15). | 0=relay is open |
#003D | Hours INV - converter operating time counter | XXXX h |
#003E | Hours MT - motor operating time counter | XXXX h |
#003F | Pos.ref. - required position in a case of „position“ variable | +/- XXXX,X cm |
#0040 | Position - real position | +/- XXXX,X cm |
#0041 | Pos. TSW2 - the trajectory for running down when Terminal switch TSW2 is on | +/- XXXX cm |
#0042 | Deviation from zero position when calibrating the ARC position sensor | XXXX d |
#0043 | cos(fi ) - momentary value of motor power factor | +/- X,XX |
#0044 | - | |
#0045 | - | |
#0046 | See Faults register | - |
#0048 | Overload - a momentary value of overload | XXX.X % |
#0049 | Service SL - service displayed variable Slave | +/- XXXX d |
#004a | Service MS - service displayed variable Master | +/- XXXX d |