BUSCH RA 0255 D User manual

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R5 / COBRA / DOLPHIN
With Variable Speed Drive (VSD)
R5 RA 0255 D / 0305 D, RA/RC 0400 C / 0502 C / 0630 B/C
COBRA NC 0300 B / 0400 B / 0630 C, COBRA NX 0450 A / 0650 A / 0950 A
DOLPHIN LM 0180 – 0800 A, LT 0170 – 0220 A, 0320 A, 0430 A, 0510 A, 0630 A
Pump Control Instructions
0870208958 | -0003_en | Original instructions 07/03/2022

Table of Contents
2 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
Table of Contents
1 Safety..................................................................................................................................................................... 3
2 Introduction ......................................................................................................................................................... 4
3 Product Description............................................................................................................................................. 5
4 Installation ........................................................................................................................................................... 7
4.1 Remote Control Connection .............................................................................................................................. 7
4.2 PC-Software Installation ..................................................................................................................................... 7
4.3 Bluetooth Stick Connection................................................................................................................................ 8
5 Commissioning..................................................................................................................................................... 9
5.1 Operate the Remote Control ............................................................................................................................. 9
5.1.1 Key Overview ......................................................................................................................................... 9
5.1.2 Navigation and Input............................................................................................................................ 9
5.1.3 Menu....................................................................................................................................................... 10
5.1.4 Parameter Group Menu (Expert Mode) ............................................................................................. 11
5.2 Run the Machine ................................................................................................................................................. 14
5.3 Alarm Trip Settings.............................................................................................................................................. 14
6 Custom Parametrisation..................................................................................................................................... 15
6.1 Disable the Machine ........................................................................................................................................... 16
6.2 Save Parameters.................................................................................................................................................. 17
6.3 Reload Factory Settings ...................................................................................................................................... 19
7 Input / Output Description ................................................................................................................................. 21
7.1 Overview I/O Connections ................................................................................................................................. 21
7.2 Preventing Electromagnetic Interferences...................................................................................................... 24
7.3 Parameters Set Change Values ......................................................................................................................... 25
7.3.1 Parameters not to be changed ........................................................................................................... 25
7.4 Start / Stop Functionality.................................................................................................................................... 25
7.4.1 Description............................................................................................................................................. 25
7.4.2 Parameters ............................................................................................................................................ 25
7.5 Speed Control via Digital Inputs........................................................................................................................ 26
7.5.1 Description............................................................................................................................................. 26
7.5.2 Speed Control: 1 Fixed Frequency + Min. Frequency ....................................................................... 26
7.5.3 Speed Control: 3 Fixed Frequency + Min. Frequency ....................................................................... 27
7.5.4 Speed Control: 7 Fixed Frequency + Min. Frequency ....................................................................... 27
7.6 Speed Control via Analogue Input .................................................................................................................... 28
7.6.1 Description............................................................................................................................................. 28
7.6.2 Speed Control via Internal Potentiometer......................................................................................... 28
7.6.3 Speed Control via Analogue Input 1................................................................................................... 28
7.6.4 Speed Control via Analogue Input 2................................................................................................... 31
7.7 PID Pressure Control .......................................................................................................................................... 34
7.7.1 Description............................................................................................................................................. 34
7.7.2 PID Pressure Control Setup ................................................................................................................. 34
7.7.3 Stand-by Function in PID Pressure Control (Sleep Mode) ............................................................... 36
8 Troubleshooting................................................................................................................................................... 37
8.1 LED Flash Codes .................................................................................................................................................. 38
8.2 List of Errors......................................................................................................................................................... 39

Safety | 1
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 3 | 44
1 Safety
These pump control instructions shall give further information concerning individual setting or data
analysis to experienced and trained users. Prior to handling the product, this document should be
read and understood. If anything needs to be clarified please contact your Busch representative.
Read carefully before use and keep for future reference.
This document remains valid as long as the customer does not change anything on the product.
The product is intended for industrial use. It shall be handled only by qualified personnel.
The product has been designed and manufactured according to state-of-the-art methods.
Nevertheless, residual risks may remain. This instruction manual highlights potential hazards where
appropriate. Safety notes and warning messages are tagged with one of the keywords DANGER,
WARNING, CAUTION and NOTICE as follows:
DANGER
... indicates an imminent dangerous situation that will result in death or serious injuries if not
prevented.
WARNING
... indicates a potentially dangerous situation that could result in death or serious injuries.
CAUTION
... indicates a potentially dangerous situation that could result in minor injuries.
NOTICE
... indicates a potentially dangerous situation that could result in damage to property.
NOTE
... indicates helpful tips and recommendations, as well as information for efficient and
trouble-free operation.

2 | Introduction
4 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
2 Introduction
NOTE
Pump control instructions.
This document is delivered along with the Busch variable speed drive, which is supplied with
Busch vacuum pumps or which is retrofitted to existing pumps.
It only contains information about the variable speed drive parametrisation and control.
Please refer to the original instruction manual of the corresponding machine which content
remains valid.

Product Description | 3
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 5 | 44
3 Product Description
Pos. Part Part no.
1 Remote control including cable to variable speed
drive
0987 208 729
2 Connection cable for PC 0987 208 730
3 USB Stick including PC-Software, pump control
instructions, setup file
Specific to pump
4 Variable speed drive -
5 Bluetooth stick 0646 241 856
6 Vacuum pump with variable speed drive Specific to pump
Different interfaces are available to connect to the VSD for:
– Parametrisation of the variable speed drive
– Control (e.g. locking and releasing)
– Display of various process values

3 | Product Description
6 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
Available interfaces:
– Remote control (pos.1)
– Connection cable for PC (pos.2)
– Bluetooth stick to connect a smartphone (pos.5)
The following machines can be equipped with variable speed drive:
– R5 RA 0255 D
– R5 RA 0305 D
– R5 RA/RC 0400 C
– R5 RA/RC 0502 C
– R5 RA/RC 0630 C
– COBRA NC 0300 B
– COBRA NC 0400 B
– COBRA NC 0630 C
– COBRA NX 0450 A
– COBRA NX 0650 A
– COBRA NX 0950 A
– DOLPHIN LM 0180 – 0800 A
– DOLPHIN LT 0170, 0220, 0320, 0430, 0510, 0630 A

Installation | 4
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 7 | 44
4 Installation
4.1 Remote Control Connection
NOTICE
Non-compatible variable speed drive.
Risk of damage to the variable speed drive!
●The remote control must only be operated with „INVEOR“ variable speed drive.
M12 interface socket
●Connect the cable of the remote control to the M12 interface socket.
4.2 PC-Software Installation
●Start the setup file of the PC-Software from the USB stick or download it from the Busch website
www.buschvacuum.com .
●Install the PC-Software on your computer.

4 | Installation
8 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
4.3 Bluetooth Stick Connection
●Fit the Bluetooth stick to the M12 interface socket.
●Download Busch VSD App.

Commissioning | 5
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 9 | 44
5 Commissioning
5.1 Operate the Remote Control
5.1.1 Key Overview
Confirm buttons
“UP” and “DOWN” buttons
“LEFT” and “RIGHT” buttons
Stop button
Start button
5.1.2 Navigation and Input
Buttons Function
"UP"/"DOWN" buttons Selecting parameters, changing values
"LEFT"/"RIGHT" buttons Navigating cursor
Confirm buttons With these buttons, the command showed in
the display is activated via the button
"START"/"STOP" buttons With these buttons, the motor is started or
stopped
Commands Procedures
Next Calling up parameters and submenu
Back One menu level higher
Cancel End entry without saving
Change Call up edit mode (cursor blinks)
Save Save selection, entry or change
Enter Confirm the selected parameter set
Start Command for motor detection
Enter Procedures
Displaying tens, hundreds, thousands place Press "LEFT" arrow until the desired tens,
hundreds or thousands place is displayed
Displaying decimal places Press "RIGHT" arrow until the desired decimal
places are displayed
Entering negative values Place cursor on the plus sign, select the minus
sign with the "UP" arrow and save

5 | Commissioning
10 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
5.1.3 Menu
The menu appears on the remote control display when the variable speed drive is switched on.
For parameter groups menu, there are two different modes:
●Standard mode:
Contains all necessary parameters for standard application from the factory.
●Expert mode, see Parameter Group Menu (Expert Mode) [➔11]:
Contains advanced parameters for special uses, the expert mode is activated in the main
menu.
The remote control always starts in standard mode.
x
x
The INVEOR MMI always starts in standard mode. If the INVEOR MMI is de-
energized, the standard mode is active again.
01. Actual values
02. Parameter group
20. Actual fault
21. Fault memory
30. Automatic Motor detection
40. Control
50. Expert mode
80. Read parameter
81 Write parameter
82 Delete parameter
98. SW/HW status
99. Language
Fig. 5: View of main menu
The entire menu is mapped in the INVEOR operating manual.

Commissioning | 5
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 11 | 44
5.1.4 Parameter Group Menu (Expert Mode)
In expert mode, the "0.2 Parameter group" menu contains advanced parameters for special
applications.
Operation
INVEOR MMI / 2013-09 21
3.6 Parameter group menu (expert mode)
In expert mode, the "0.2 Parameter group" menu contains advanced
parameters for special applications. The expert mode is activated in the
main menu (see Fig. 5: View of main menu).
Fig. 8: View of parameter group (expert mode) – Part 1
01.Actual values
Basic parameter Control mode Process controller
Low speed
High speed
Deceleration 1
Acceleration 1
Deceleration 2
Acceleration 2
Ramp selection
Ref.channel
02.Parameter groups
Enable software
Start protect
Rotation direction
Reset
Automatic reset
Quan.auto.reset
Preset speed mode
Preset speed 1
Preset speed 7
MOP digital in.
MOP step range
MOP step time
MOP resp.time
MOP ref.memory
PID prop.gain
PID prop.gain
PID prop.gain
PID feedback
PID inverted
PID preset ref. 1
…
PID preset ref. 1
PID ref.mode
PID standby time
PID std.by hyst.
…

5 | Commissioning
12 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
Operation
INVEOR MMI / 2013-09 22
Fig. 9: View of parameter group (expert mode) – Part 2
ontrol terminal
AI1 ref.type
AI1 min.input
AI1 max.input
AI1 dead time
AI1 filter time
AI1 function
AI1 phy.unit
AI2 ref.type
AI1 min.input
AI2 max.input
AI2 dead time
AI2 filter time
AI2 function
AI2 phy.unit
AO1 function
AO1 min.output
AI1 max.input
DO1 function
DO1 on
DO1 off
DO2 function
DO1 on
DO1 off
Relay1 function
Relay1 on
Relay1 off
Relay1 on delay
Relay1 off delay
Relay2 function
Relay2 on
Relay2 off
Relay2 on delay
Relay2 off delay
Special function
External fault 1
External fault 2
urr.limit.[%]
urr.limit.[s]
Factor gearbox
Stall detection
Stall time
Para. set change
Tech.parameter1
…
Tech.parameter20

Commissioning | 5
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 13 | 44
Operation
INVEOR MMI / 2013-09 23
*) These values are automatically determined and entered during motor detection.
Fig. 10: View of parameter group (expert mode) – Part 3
Brake chopper
Brake chopper
Field.parameter
SAS/SPF address
SAS baud rate
Fieldbus address
Fieldbus baud rate
Bus timeout
Fieldbus language
Ref-feed.diff.
Tolerance range
Reference value
Process data out 3
…
Process data out 10
Process data in 3
…
Processdata in 6
Motor type
i2t fac.mot.
I2T time
Opt.stat.resist.
Motor current
Motor power
Motor speed
Motor frequency
Motor resistance *
Leakage induct. *
Motor voltage
Motor cos phi
Holding current time
Stator induct. *
Nominal flux
Controller
t
Control method
Encoder type
Enc.line count
Encoder offset
Flying restart
Switching frequency
Speed control Kp
Speed control Tn
Slip trimmer
Squared charac.
Flux compensation
Motor parameter
Volt.contr.res.
Field weakening
Startup current
Init.time PMSM
Start.mode PMSM
Start.ramp PMSM
Startup frequency

5 | Commissioning
14 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
5.2 Run the Machine
NOTICE
Frequent starts and stops by connecting and disconnecting from the power supply.
Risk of damage to the machine!
Starting the machine by connecting and disconnecting the power supply is permitted max. 2x per
minute. Between disconnecting and connecting at least 10 seconds must have been passed. If the
process requires more frequent starts/stops of the machine:
●Use the digital start signal.
Machine type Motor frequency
R5 RA 0255 D 60 Hz
R5 RA 0305 D 60 Hz
R5 RA/RC 0400 C 60 Hz
R5 RA/RC 0502 C 60 Hz
R5 RA/RC 0630 C 60 Hz
COBRA NC 0300 B 60 Hz
COBRA NC 0400 B 60 Hz
COBRA NC 0630 C According to module maximum speed
50 or 60 Hz
COBRA NX 0650 A
COBRA NX 0450 A 60 Hz
COBRA NX 0950 A 72 Hz
DOLPHIN LM 0180 – 0800 A 60 Hz
DOLPHIN LT 0170 – 0220 A 60 Hz
DOLPHIN LT 0320 A 60 Hz
DOLPHIN LT 0430 A 60 Hz
DOLPHIN LT 0510 A 60 Hz
DOLPHIN LT 0630 A 60 Hz
●Refer to the Installation and Retrofit instructions of the corresponding machine for the complete
commissioning procedure and for the electrical connection of the machine.
●Maximum permissible number of starts by using the digital signal: unlimited
As soon as the machine is operated under normal operating conditions:
●Measure the mains current or read it via PC-Software or controller.
5.3 Alarm Trip Settings
Please refer to the Electrical Schematics supplied with the machine for pre-installed safety sensors.
On COBRA and R5 machines typically one temperature switch is wired to Digital Input no. 3 and
stops the machine in case of a trip alarm.

Custom Parametrisation | 6
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 15 | 44
6 Custom Parametrisation
DANGER
Maintenance work without disconnecting the variable speed drive.
Risk of electrical shock.
●Disconnect and isolate the variable speed drive before attempting any work on it.
High voltages are present at the terminals and within the variable speed drive for up to 10
minutes after disconnection of the electrical supply.
●Always ensure by using a suitable multimeter that no voltage is present on any drive power
terminals prior to commencing any work.
DANGER
Live wires. Carry out any work on the variable speed drive and motor.
Risk of electrical shock!
●Electrical installation work must only be executed by qualified personnel.
NOTICE
Change factory settings.
Risk of damage to the machine!
If wrong or not allowed parameters have been set, Busch disclaims any liability for damage to the
machine.
●Change only the allowed parameters described in the chapter Input / Output Description [➔21].
NOTE
Parameterisation is possible prior to device installation.
Parameterisation can be performed before the drive controller is installed in the motor.
The variable-frequency drive has a 24 V low-voltage input for this purpose, which can supply
the electric system without requiring mains power.

6 | Custom Parametrisation
16 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
6.1 Disable the Machine
●Make sure that the variable speed drive is de-energised.
●Remove the bridge between “24V Out” (int. power supply) and “En HW” (enable hardware) in order
to avoid any start up.
●Energise the variable speed drive either from 24 VDC power supply or from the mains power.

Custom Parametrisation | 6
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 17 | 44
6.2 Save Parameters
NOTE
Before making any change, backup the current parameters via PC-Software.
●Make sure that the machine is disabled, see Disable the Machine [➔16].
●Connect the variable speed drive to the computer with the provided cable.
●Start the PC-Software previously installed, see PC-Software Installation [➔7].
●Select “Connect”
●Select the communication port of the cable (usually never COM1)
●Press “OK”

6 | Custom Parametrisation
18 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
●Go to “File” → “Save As”
●Save the file “.inveor” in your database in order to reload the initial or specific parameters for
future purposes.
NOTE
Custom parametrisation via the remote control.
Please keep a note of each changed parameters.
As soon as the parametrisation is finished:
●De-energise the variable speed drive.
●Reconnect the variable speed drive inputs according to your parameter list without forgetting
to connect the “En HW” input.

Custom Parametrisation | 6
Pump Control Instructions INVEOR VFD R5 COBRA_EN_en 19 | 44
6.3 Reload Factory Settings
●Make sure that the machine is disabled, see Disable the Machine [➔16].
●Connect the variable speed drive to the computer with the provided cable.
●Start the PC-Software previously installed, see PC-Software Installation [➔7].
●Select “Open” to load the file “.inveor” of your parameter list.
●Click on “Write”.
●Select the communication port of the cable (usually never COM1)
●Press “OK”

6 | Custom Parametrisation
20 | 44 Pump Control Instructions INVEOR VFD R5 COBRA_EN_en
●Wait until the end of the program downloading.
●Check the motor parameters match to the motor fitted on the machine.
As soon as the parametrisation file is loaded:
●De-energise the variable speed drive.
●Reconnect the variable speed drive inputs according to your parameter list without forgetting
to connect the “En HW” input.