Peter electronic VB 230-6LT Manuale di formazione
electronic
Quality is our Drive.
Braking Devices
VB 230/400-6/25/30LT
Assembly- and Commissioning Instructions
VB230/400-6/25/30LT 1
as per 06/18 1B200.10001
Table of Contents Page
1. Safety notes 3
2. Conformity 3
3. General description 4
4. Usage to the intended purpose 4
5. EC Declaration of Contormity 5
6. Block diagram 6
7. Functional description (see connection diagram) 6
7.1 LED indicators 7
8. Control inputs and outputs 8
8.1 Control input 8
8.2 Control outputs 9
9. Potentiometers 10
10. Technical data 11
10.1 Environmental conditions 11
11. Commissioning 12
11.1 Mounting instructions 12
11.2 Connection 12
11.3 Parameter settings 13
11.4 Possible fault indications during commissioning 14
12. Dimensioning rules 16
12.1 Dimensioning of braking contactors 16
12.2 Dimensioning of pre-fuses 16
12.3 Permissible braking frequency 18
13. Dimensions 20
14. Typical connections 21
14.1 Connection diagram 21
2 VB230/400-6/25/30LT
Notes and symbols used in these instructions
Note: Notes explain the advantages of certain adjustments or settings and help
you to make use of the device in the best possible way.
Warning notices: Read them carefully and follow them strictly!
Warning notices are indicated in order to protect you against danger or to
help you to prevent the device from being damaged.
Caution: Danger to life through electric shock!
When you see this sign, always make sure that the device is de-energized
and secured against unintentional energizing.
These commissioning instructions were prepared with great care. Nevertheless, PETER
electronic GmbH & Co. KG does not assume liability for damage resulting from mistakes
possibly contained in this manual. Technical changes that serve to improve the product are
subject to change without notice.
Disposal Instructions
Equipment containing electrical components may not be disposed of
together with domestic waste. It must be collected separately as electrical
and electronic waste according to local and currently valid legislation.
VB230/400-6/25/30LT 3
1. Safety notes
The described devices are electrical equipment for use in industrial electrical power
installations. An impermissible removal of the covers during operation can cause
serious damage to your health, since these devices contain live parts with high
voltages.
Adjustment work may only be performed by trained staff observing the safety regulations.
Assembly and mounting work may only be carried out with the equipment deenergized.
Make sure that all drive components are properly earthed.
Please read these commissioning instructions carefully before putting the device into operation.
Besides, the user must ensure that the devices and associated components are fitted and
connected in accordance with the appliable local, legal and technical regulations. The VDE-
regulations VDE 0100, VDE 0110 (EN 60664), VDE 0160 (EN 50178) , VDE 0113 (EN 60204,
EN 61310),VDE 0660 (EN 50274) plus the appropriate regulations of the TÜV (Technical Control
Association) and the trade associations apply in Germany.
The user must ensure that the drive turns into a safe operating state following a device failure, in
the event of maloperation, or if the control unit has failed etc..
Caution: Even if the motor is at rest, it is not physically separated from the mains.
2. Conformity
In industrial linguistic usage the electronic brakes of the type series VersBrake…-LT are called
„devices“, however, in the sense of the „law on the safety of equipment“, the „EMC-law“ or the
„EC machinery directive“ they are not devices or machines ready for use or connection but they
are components. It is only possible to define their final function, when these components are
integrated into the design and construction of the user.
To be able to use the devices to their intended purpose, it requires power supply networks
according to DIN EN 50160 (IEC38).
The user takes the responsibility that the user’s design and construction comply with the appli-
cable legal provision.
The commissioning is strictly forbidden as long as the conformity of the final product with the
guidelines 2006/42/EC (Machinery directive) and 2006/95/EC (Low voltage directive) is not
proved.
4 VB230/400-6/25/30LT
3. General description
The electronic braking devices of the VersiBrake LT-type enable non-wearing braking of three-
phase and single-phase asynchronous motors. The braking devices are used for drives that, due
to safety and functional reasons, have to be reliably slowed down. Braking is initiated when the
connected and normally closed contact of the motor contactor is reclosed. After a time lapse
adjusted with the potentiometer „t“, the braking current adjusted with „I“ is switched off.
The operational status and any possible faults are indicated via LEDs and a flashing mode.
Special features
• controlled by microcontroller
• wear-resistant and maintenance-free
• for three-phase asynchronous motors
• for mono-phase motors
• retrofitting into existing plants possible
• integrated braking contactor
• automatic remanence time optimization
• integrated overload monitoring
• braking current contro
• Braking interrupt possible
• Restart possible 1,2s after braking interrupt
• Wide adjustment range of the braking time (0...30s)
• Suitable as a replacement for braking devices of the types BR and BR-L
4. Usage to the intended purpose
The devices of the VersiBrake…-LT-series are electrical equipment that is used in industrial
electrical power installations. They are designed for application in machines, in order to slow
down rotating masses on drives with three-phase a.c. motors.
Typical applications
• sawing machines
• centrifuges
• wood working machines
• conveying systems
• textile machines
VB230/400-6/25/30LT 5
5. EC Declaration of Contormity
EC Declaration of Conformity
The manufacturer / company placing the product on the market
(authorized representatives of the manufacturer / companies placing the product on the market
that are established within the Community)
Name / Address: PETER electronic GmbH & Co. KG
Bruckäcker 9
92348 Berg
hereby declares that the following product (device, component, unit) in the version as supplied
Product designation: Braking device
Series / type designation: VB 230/400-6/25/30LT
Article number: 2B2...
Year of manufacture: 2007
complies with the provisions of the following EU-directives:
2014/30/EU
2014/35/EU
2011/65/EU
This EC Declaration of Conformity is no longer valid, if the product is modified or changed
without our agreement.
This declaration is issued under the sole responsibility of the signatory.
Berg, 15.04.2016 Dr. Thomas Stiller, Managing director
(place, date) (signatory and function of the signatory) (signature)
Electromagnetic compatibility
Electrical equipment designed for use within certain voltage limits
The restriction of the use of certain hazardous substances in
electrical and electronic equipment
The following harmonized standards have been applied:
EN 60947-1:2007+A1:2012
EN 60947-4-2:2012
Low-voltage switchgear and controlgear General rules
Low-voltage switchgear and controlgear
Contactors and motor-starters - AC semiconductor motor
controllers and starters
6 VB230/400-6/25/30LT
6. Block diagram
7. Functional description (see connection diagram)
After the operating voltage on 1L1 and 3L2 has been switched on, the main contactor interlock
X5, X6, the fault signaling contact closes. The motor can be started.
A starting logic makes sure that, when switching the plant on with the master switch while the
motor is still switched off, braking is not initiated.
The fully automatic run of the braking interval starts when the normally closed contact (connected
to the terminals X3, X4) of the motor contactor is reclosed. During braking, the main contactor is
interlocked via the contact X5, X6. After a delay time which, dependent on the amount of the
remanent voltage of the motor, optimizes itself, the integrated braking relay pulls in. After the
contact bounce time has been waited out, a controlled d.c. current is fed into the motor winding.
The magnetic field resulting from this has a braking effect on the still rotating rotor. The d.c.
current is generated by a thyristor phase control. Special suppressor circuits protect the power
semiconductors against overvoltage. With the potentiometer „I“, the braking current (and thus the
braking torque) can be adjusted within a range of 10 … 100% of the rated device current.The
length of time the braking current is to flow can be adjusted with the potentiometer „t“ within a
range of 0...30s/60s. To protect the braking device against overloading in the case of braking
times exceeding 20s, the adjustable maximum braking current (rated device current) decreases.
Controller
1L1 3L2
2T1 4T2 6T3
X5
X6
X3 X4
X7
Interlocking
24V 5V
Power
supply
unit
Braking
time
Braking
current
+5V
VB230/400-6/25/30LT 7
For the braking currents applicable to the respective braking times please refer to the table under
point 7. By using an integrated monitoring function, the device protects itself against overloading
caused by a too high braking frequency. For commissioning or setting-up purposes, 5 braking
operations in direct succession are allowed. If exceeding of the permissible maximum braking
frequency is detected, the motor will be interlocked against switch-on (In the case of the special
version SO1, overloading is only indicated. The motor is not interlocked against switch-on). This
interlock can be reset only by switching off the operating voltage.
Faults occuring during braking are indicated via a flashing mode.
If the motor is to be restarted during a braking operation, it is first of all necessary to stop the
braking operation. For this, the contact X3-X4 is to be opened for the least 150ms. When the
contact X3-X4 is reclosed, the motor can be restarted after 1200ms.
Note: If the braking time at rated device current is too short, due to the fact that the
centrifugal masses to be slowed down are too large, a device featuring a
higher rated current has to be used.
7.1 LED indicators
LED – ready
- Illuminated
- Flashing 2xa
- Flashing 3xa
- Flashing 4xa
a. ... repeated with a short pause
Operational status
- Mains voltage is applied, braking device is ready
- Adjusted braking current was not reached
- Braking frequency too high
- Program- or controller-error
LED – I
- Illuminated
Operational status
- Braking current is flowing
8 VB230/400-6/25/30LT
8. Control inputs and outputs
8.1 Control input
Braking interrupt:
With the input X3, X4, a braking interrupt can be effected. For this purpose, another normally
closed contact has to be connected in series before the normally closed contact of the motor
contactor. Opening of this contact for at least 150ms will cause a braking interrupt.
After closing of this contact - however after 1200ms at the earliest - the motor can be restarted.
Caution: Danger to life through electric shock!
The terminals X3, X4 carry mains potential; when laying the connecting
lines, be sure to provide protection against accidental contact.
Control terminals Designation Description
X3, X4 Starting contact Connection of a normally closed contact of the motor
contactor.
VB230/400-6/25/30LT 9
8.2 Control outputs
Behavior of the changeover contact on X5, X6, X7
* Special device with designation suffix SO1 or SO3
Control
terminals
Designation Description
X5, X6, X7 Interlock (potential-
free changeover
contact, common
contact on X5)
During braking, the contact between X5 and X6 is
open. This contact is to be looped into the control
circuit of the motor contactor. Therefore, the motor
cannot be started during braking.
The contact between X5 and X7 is closed during
braking. Thus, it is, e.g. in the case of star-delta-
connections, possible during braking to control the
star contactor in order to interconnect the motor
winding.
For more detailed information, please see connection
diagram under 12.1.
Status Interlocking contact
X5 – X6
Star contactor
contact X5 – X7
Reset by
Motor off closed open
Motor is running closed open
Motor is being
decelerated
open closed
Braking correctly fini-
shed
closed open
Braking frequency too
high
open closed short disconnection
from mains (5s)
Braking frequency too
high by SO1 or SO3*
closed open not necessary
Program-
controller-error
open closed short disconnection
from mains (5s)
Braking interrupt
(break on terminal X3,
X4)
open closed closing the open con-
tact on X3, X4
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