INVT RBU Series User manual

RBU
Operation Manual
zThank you very much for your buying RBU series regenerative break unit.
zBefore use, please read this manual thoroughly to ensure proper usage. Keep this
manual at an easily accessible place so that can refer anytime as necessary.

Safety Precautions
Please read this operation manual carefully before installation, operation, maintenance or
inspection.
In this manual, the safety precautions were sorted to “WARNING” or “CAUTION”.
I
Indicates a potentially dangerous situation which, if can not
avoid will result in death or serious injury.
WARNING
Indicates a potentially dangerous situation which, if can not
avoid will cause minor or moderate injury and damage the
device. This
CAUTION
Symbol is also used for warning any un-safety operation.
In some cases, even the contents of “CAUTION” still can cause serious accident.
Please follow these important precautions in any situation.
★NOTE indicate the necessary operation to ensure the device run properly.

II
TABLE OF CONTENTS
TABLE OF CONTENTS ............................................................................................ II
LIST OF FIGURES ................................................................................................... III
1. INTRODUCTION................................................................................................. 1
1.1 Technology Features .................................................................................... 1
1.2 Description of Name Plate ........................................................................... 2
1.3 Selection Guide............................................................................................ 2
1.4 External Dimension ...................................................................................... 3
2. INSPECTION ...................................................................................................... 4
3. INSTALLATION................................................................................................... 5
3.1 Environmental Requirement......................................................................... 6
3.2 Installation Space ......................................................................................... 7
3.3 Dimensions of External Keypad ................................................................... 7
3.4 Disassembly ................................................................................................. 8
4. WIRING ............................................................................................................... 9
4.1 Terminal Configuration ............................................................................... 10
4.1.1 Main Circuit Terminals ..................................................................... 10
4.1.2 Control Circuit Terminals .................................................................10
4.2 Wiring Daragram ........................................................................................ 12
5. OPERATION.................................................................................................... 13
5.1 Keypad Description .................................................................................... 13
5.1.1 Keypad schematic diagram ............................................................. 13
5.1.2 Key function description ..................................................................13
5.1.3 Indicator light description................................................................. 14
5.2 Function parameters .................................................................................. 14
5.3 Detailed function description ...................................................................... 17
6. TROUBLE SHOOTING ....................................................................................... 19
7. MAINTENANCE.............................................................................................. 21
7.1 Daily Maintenance...................................................................................... 21
7.2 Periodic Maintenance................................................................................. 21
8.3 Replacement of wearing parts ................................................................... 22

III
LIST OF FIGURES
Figure 1.1 Nameplate of RBU......................................................................................... 2
Figure1.2 External dimensions. ...................................................................................... 3
Figure 3.1 Relationship between output current and altitude. ........................................ 6
Figure 3.2 Safety space.................................................................................................. 7
Figure 3.3 Dimension of big keypad. .............................................................................. 7
Figure 3.4 Disassembly of cover. ................................................................................... 8
Figure 4.1 Main circuit terminals................................................................................... 10
Figure 4.2 Control circuit terminals. .............................................................................. 10
Figure 4.3 Wiring Diagram............................................................................................ 12
Figure 5.1 Keypad schematic diagram. ........................................................................ 13

Introduction
1
1. INTRODUCTION
1.1 Technology Features
Voltage Range 380V
Break Moment 60s with 100% of rated torque (25% Duty cycle), can
continuously run with 80% of rated torque.
AC Power 380VAC, 50/60Hz
AC Voltage Range ＋10％to －15％, the imbalance between phases less than
2%.
AC Frequency Range Less than 3Hz
Control Mode Current Control with 120°
AC Power Factor Higher than 0.9
Overload Capacity 30s with 150% of rated current
Operation Mode External terminal, Keyboard
Fault Output Relay output
Status Display LED Keyboard
Analog Output Voltage (0－10V)
Over current Protection 220％rated current
Over load protection 30s with 150% of rated current
Over voltage DC: 800V
Overtemperature Temperature resistance detection
AC phase failure fault AC phase failure
AC frequency failure
fault
Fluctuating higher than 3Hz
Power light display DC: higher than 50V

Introduction
1.2 Description of Name Plate
Figure 1.1 Nameplate of RBU.
1.3 Selection Guide
Model No. Input
voltage
Rated
Power
(KW)
DC rated
current (A)
DC rated
current (A) Size
RBU-7R5-4 380V 7.5 13 10
RBU-011-4 380V 11 19 15
RBU-015-4 380V 15 26 20
RBU-018-4 380V 18.5 32 25
RBU-022-4 380V 22 37 30
RBU-030-4 380V 30 51 40
RBU-037-4 380V 37 64 50
RBU-045-4 380V 45 77 60
RBU-055-4 380V 55 96 75
RBU-075-4 380V 75 128 100
2

Introduction
1.4ExternalDimension
Figure1.2 External dimensions.
A
(mm)
B
(mm)
L
(mm)
W
(mm)
D
(mm)
Power
(kW) Installation
Dimension External Dimension
Installation
Hole
(mm)
7.5-22 In developing
30-75 140 130 577 220 236 6
3

Inspection
2. INSPECTION
4
CAUTION
●Don’t install or use any RBU that is damaged or have fault part, otherwise may
cause injury.
Check the following items when unpacking the RBU,
1．Inspect the entire exterior of the RBU to ensure there are no scratches or other
damage caused by the transportation.
2．Ensure there is operation manual and warranty card in the packing box.
3．Inspect the nameplate and ensure it is what you ordered.
4．Ensure the optional parts are what you need if have ordered any optional parts.
Please contact the local agent if there is any damage in the RBU or optional parts.

Installation
3. INSTALLATION
WARNING
●The person without passing the training manipulate the device or any rule in the
“Warning” being violated, will cause severe injury or property loss. Only the person,
who has passed the training on the design, installation, commissioning and
operation of the device and gotten the certification, is permitted to operate this
equipment.
●Input power cable must be connected tightly, and the equipment must be grounded
securely.
●Even if RBU is not running, the following terminals still have dangerous voltage:
- Power Terminals: R, S, T
- Motor Connection Terminals: U, V, W.
●When power off, should not install the RBU until 5 minutes after, which will ensure the
device discharge completely.
●The section area of grounding conductor must be no less than that of power supply
cable.
CAUTION
●When moving the RBU please lift by its base and don’t lift by the panel. Otherwise
may cause the main unit fall off which may result in personal injury.
●Install the RBU on the fireproofing material (such as metal) to prevent fire.
●When need install two or more RBU in one cabinet, cooling fan should be provided to
make sure that the air temperature is lower than 45°C. Otherwise it could cause fire
or damage the device.
5

Installation
3.1 Environmental Requirement
3.1.1 Temperature
Environment temperature range: -10°C ~ +40°C. RBU will be derated if ambient
temperature exceeds 40°C.
3.1.2 Humidity
Less than 95% RH, without dewfall.
3.1.3 Altitude
RBU can output the rated power when installed with altitude of lower than 1000m. It will
be derated when the altitude is higher than 1000m. For details, please refer to the
following figure:
Figure 3.1 Relationship between output current and altitude.
(m)
3.1.4 Impact and Oscillation
It is not allowed that the RBU falls down or suffers from fierce impact or the RBU installed
at the place that oscillation frequently.
3.1.5 Electromagnetic Radiation
Keep away from the electromagnetic radiation source.
3.1.6 Water
Do not install the RBU at the wringing or dewfall place.
3.1.7 Air Pollution
Keep away from air pollution such as dusty, corrosive gas.
3.1.8 Storage
Do not store the RBU in the environment with direct sunlight, vapor, oil fog and vibration.
6

Installation
3.2 Installation Space
Figure 3.2 Safety space.
Notice: Add the air deflector when apply the up-down installation.
3.3 Dimensions of External Keypad
Figure 3.3 Dimension of big keypad.
7

Installation
3.4 Disassembly
Figure 3.4 Disassembly of cover.
8

Wiring
4. WIRING
WARNING
●Wiring must be performed by the person certified in electrical work.
●Forbid testing the insulation of cable that connects the RBU with high-voltage
insulation testing devices.
●Cannot install the RBU until discharged completely after the power supply is switched
off for 5 minutes.
●Be sure to ground the ground terminal.
400V class: Ground resistance should be 10Ωor less,
Otherwise, it might cause electric shock or fire.
●Connect input terminals (R, S, T) and output terminals (U, V, W) correctly.
Otherwise it will cause damage the inside part of RBU.
●Do not wire and operate the RBU with wet hands.
Otherwise there is a risk of electric shock.
CAUTION
●Check to be sure that the voltage of the main AC power supply satisfies the rated
voltage of the RBU.
Injury or fire can occur if the voltage is not correct.
●Connect power supply cables and regenerative cables tightly.
9

Wiring
4.1 Terminal Configuration
4.1.1 Main Circuit Terminals
Figure 4.1 Main circuit terminals.
Main circuit terminal functions are summarized according to the terminal symbols in the
following table. Wire the terminal correctly for the desired purposes.
10
4.1.2 Control Circuit Terminals
Figure 4.2 Control circuit terminals.
Control circuit terminals
Terminal Description
S1~S4
ON-OFF signal input, optical coupling with +24V and COM. Short
connect with COM.
S1: When terminal control is valid, automatical input;
S2: When terminal control is un-valid, manual input;
S3: Multi-function terminal (Default is external fault input)
S4: Multi-function terminal (Default is fault reset input)
Terminal Symbol Function Description
R、S、T Terminals of 3 phase main power
(+)、(-) Input terminals of power regenerative
Terminal of ground (PE)

Wiring
11
Terminal Description
COM Common ground terminal for digital signal and +24V (or external
power supply).
Y
Open collector output terminal, The corresponding common
ground terminal is COM.
External voltage range: 0~24V
Output current range: 0~50mA
+24V Provide output power supply of +24V.
Maximum output current: 150mA
AO Analog output terminal. Output range: 0~10V
GND Common ground terminal of analog signal and AO.
GND must isolated from COM.
RO1A、
RO1B、RO1C
RO1 relay output: RO1A—common; RO1B—NC; RO1C—NO.
Contact capacity: AC 250V/3A, DC 30V/1A.

Wiring
4.2 Wiring Daragram
R
S
T
S1
S2
S3
S4
COM
PE
Automatic running
External fault
Manual running
Faulty reset
INVERTER
(+) (-)
+24V
CN9
～Analog output
0-10V/0-20mA
AO
GND
Y
Open collector
output
RBU
Interface for
external keyboard
ROA1
Relay
output 1
ROB1
ROC1
COM
M
U
V
W
PE
(-)/N(+)/P
Electromagnetism contactor
AC Reactor
R
S
T
Suggest to use FU
Figure 4.3 Wiring Diagram.
12

Operation
5. OPERATION
5.1 Keypad Description
5.1.1 Keypad schematic diagram
Figure 5.1 Keypad schematic diagram.
5.1.2 Key function description
Key Name Function Description
Programming
Key Entry or escape of first-level menu.
Enter Key Progressively enter menu and confirm parameters.
UP Increment
Key Progressively increase data or function codes.
DOWN
Decrement Key Progressive decrease data or function codes.
In parameter setting mode, press this button to
select the bit to be modified. In other modes,
cyclically displays parameters by right shift
Shift Key
13

Operation
Run Key Start to run the inverter in keypad control mode.
STOP/RESET
Key
In running status, restricted by P7.04, can be used to
stop the inverter.
When fault alarm, can be used to reset the inverter
without any restriction.
5.1.3 Indicator light description
1) Function Indicator Light Description
Function indicator Description
RUN/TUNE Extinguished: stop status
Light on: operating status
LOCAL/REMOT
Extinguished: keypad control
Flickering: terminal control
Light on: communication control
TRIP Extinguished: normal operation status
Flickering: overload pre-warning status
2）Unit Indicator Light Description
Unit indicator Description
Hz Frequency unit
A Current unit
V Voltage unit
RPM Rotating speed unit
% Percentage
3) Digital Display
Have 5 digit LED , which can display all kinds of monitoring data and alarm codes such as
mains voltage, bus voltage, output current and so on.
5.2 Function parameters
Function
Code Name Description Factory Setting Modify Serial No.
P0 Group: Basic Function
P0.00 Control mode
0~1
0: Keyboard control
1: Terminal control
S1 valid: automatical mode
S2 valid: manual mode
1 0
P0.01 Keyboard control
mode
0~1
0: Automatical mode
1: Manual mode
0 1
14