Advanced Control VersiStart II Series Training manual

electronic
Quality is our Drive.
Assembly- and Commissioning Instructions
Softstarters
VS II ... - 50 ... 75

VS II ...-50...75 1
as per 07/10 15700.10008
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 Conformity 5
6. Block diagram 6
7. Commissioning 6
7.1 Mounting instructions 6
7.2 Connection 8
7.3 Adjusting the control type 8
7.4 Parameter settings 9
7.5 Current-controlled start 11
7.6 Starting frequency 13
7.7 Devices with motor-PTC input 13
8. LED indicators 14
9. Fault 14
9.1 Fault description 15
9.2 Fault remedy 16
9.3 Resetting of faults 16
10. Technical data (standard) * 17
10.1 Environmental conditions 18
11. Dimensioning rules 18
11.1 Dimensioning of pre-fuses 18
11.2 Determining the permissible starting frequency 20
12. Special units 22
12.1 Devices with rated voltage of 230V or 480V 22
12.2 Devices featuring a wide-voltage-range power section 22
12.3 Devices featuring special voltage >= 500V 22
13. Installation guidelines 22
13.1 Connection 22
13.1.1Earthing 22

2 VS II ...-50...75
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, Advanced
Control 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.
13.1.2Cabling 23
13.2 General connection diagram 24
13.3 Typical connections 25
13.4 Connection with motor contactor 26
13.5 Motor/Soft start in delta connection 26
13.6 Wide-voltage-range connection 27
14. Dimensions 28
15. Special units 28

VS II ...-50...75 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 drive controllers of the type series VersiStart II 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 VS II ...-50...75
3. General description
Ramp control:
In the case of the soft starters of the VersiStart II type the motor voltage is changed in two phases
(1L1/5L3) by a generalized phase control and power semiconductors. Starting from an adjustable
starting trigger angle the trigger angle is continually reduced. Via the adjusted ramp-up time the
motor voltage increases according to a ramp function until the maximum value is reached. When
the acceleration time is over, the power seminconductors are bypassed by integrated relays and
the motor is directly supplied with power from the mains.
Current control:
If VersiStart II is operated with an external current transformer, current-controlled starts are imple-
mented. In this connection, the motor voltage is increased via a ramp function until the adjusted
starting current is reached. With this starting current, the drive is further accelerated until the
motor current decreases to approx. nominal current. Now, the power semiconductors are bridged
by the internal bypass relays. In this operating mode, the potentiometer setting of the starting time
only determines the steepness of the initial ramp function.
After opening of the start/stop-contact, the trigger angle is continuously increased via a ramp-
function, and, as a result, the motor voltage is decreased. The motor softly decelerates with the
adjusted deceleration time.
Acceleration time, starting voltage and deceleration time can be separately adjusted via potentio-
meters.
Acceleration or deceleration are effected by closing or opening of the contact on the terminals
X1/X2.
The boost function is switched on by bridging the terminals X1/X3. Thus, at the beginning of the
soft start, an increased starting voltage is applied to the motor for a period of 0.5s.
The power supply to the control electronics is effected via the power section. On request, the
power supply can also be implemented via an external power supply unit (24V min. 150mA DC).
The devices are suitable for an operation of 3-phase motors in star or delta connection.
Interconnection of motors in a so-called -connection is possible as well.
For -connection, it is necessary to use a main contactor K1, since one motor winding lies
directly between two phases.
4. Usage to the intended purpose
The devices of the VersiStart II-series are electrical equipment that is used in industrial electrical
power installations. They are designed for application in machines, in order to reduce the starting
torque and starting current peaks as well as the tripping torque of drives with three-phase
induction motors.
Typical Applikations
• door and gate drives
• pumps, ventilators, fans
• conveying systems
• packaging machines
• transport systems, assembly lines
• machine applications
3
3

VS II ...-50...75 5
5. EC Declaration of Conformity
EC Declaration of Conformity
Name / Address: Peter Electronic GmbH & Co.KG
Bruckäcker9
92348 Berg
Germany
hereby declares that the following product (device, component, unit) in the version as supplied
Product designation: Softstarter
Serien / type designation: VS II 230/400 - 50...75
Article group: 257...
Year of manufacture: 2006
complies with the provisions of the following EC-directives:
2004/108/EG concerning
Electromagnetic compatibility
and
2006/95/EG concerning
Electrical equipment designed for use within
certain voltage limits
The following harmonized standards have been applied:
EN 60947-1: Low-voltage switchgear and
2008 controlgear
General rules
EN 60947-4-2: Low-voltage switchgear and
2007 controlgear
Contactors and motor-starters -
AC semiconductor motor
controllers and starters
This EC Decleration of Conformity is no longer valid, if the products is modified or changed
without our agreement.
This declaration is issued under the sole responsibility of the signatory.
Berg, 05.08.2009 Dr. Thomas Stiller, Managing Director
(place, date)
(signatory and function of the signatory)
(signature)
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)

6 VS II ...-50...75
6. Block diagram
7. Commissioning
The device is to be put into operation in 3 steps:
1. Mounting
2. Connection and
3. Parameter setting
7.1 Mounting instructions
Caution: Danger to life through electric shock!
The following conditions are to be complied with in order to ensure a safe
and reliable operation of the VersiStart II.
1. The device series VersiStart II is to be used under conditions of the
overvoltage category III.
2. Make sure that pollution degree 2 or better, in accordance with IEC664, is
complied with.
3. The device has to be installed into a housing (min. degree of protection: IP54).
4. The device must be operated without being exposed to contamination by
water, oil, carbon deposits, dust, etc..
6T32T1 4T2
5L31L1 3L2
X12
X11
RA2
X3
X2
X10
X9
RA1
X14 X13
RA3
IT
UU
Supply
voltage
Trigger
pulse
generator
Control
for
bypass
Electronics
Ramp control
t acc t dec
U start
Start
Boost
X1 X4 X7 X8 X5 X6
I

VS II ...-50...75 7
Place the device vertically on a perpendicular mounting plate with the motor terminals pointing
downwards. The device ist to be mounted with 4 screws (M5) onto a mounting plate. Make sure
that no additional heat sources such as equipment with high heat loss, heating resistors or the
like are arranged beneath the device; the distance between device and cable duct must be suffi-
ciently large.
Figure 1
Warning:
To avoid heat concentrations, a distance of at least 40mm is to be kept
between cable duct and device.
L1 L2 L3
T1 T2 T3
min. 40mm
min. 40mm

8 VS II ...-50...75
7.2 Connection
Power section (see also connection diagram)
Control section
The input resistance of the control inputs is 10kOhm. To control them, it is necessary to use
switching contacts enabling reliable switching of the lower control currents (e.g., AgNi+Au)!
If the contact on the terminals X1 and X2 is closed, the motor accelerates with the adjusted
acceleration time ramp. When the contact is open, the motor decelerates with the adjusted
deceleration time ramp.
Warning:
We recommend to operate the device with the current transformer included in the
delivery package, in order to protect the soft starter against destruction caused by too
high starting currents (please see Chapter 7.5 Page 11).
Caution: Danger to life through electric shock!
The motor is not physically separated from the mains.
Alternatively, the device can also be controlled with d.c. voltage.
If only soft starts are required, VersiStart II may also be controlled via the main contactor. For this
purpose, the terminals X1 and X2 have to be bridged.
7.3 Adjusting the control type
The VersiStart II device series can be operated by two control types:
1. Control with a switching contact or switching transistor between terminal X1 and X2.
2. Control by d.c. voltage 10 … 24VDC between terminals X2 and X4.
Control supply voltage USonly in the case of wide-voltage devices (option B)
Between the terminals X1 (+) and X4 ( ) an auxiliary voltage of 24VDC ±10%/150mA is to be
injected.
Terminal 1L1:
Terminal 3L2:
Terminal 5L3:
Earth connection
Terminal 2T1:
Terminal 4T2:
Terminal 6T3:
Mains voltage L1
Mains voltage L2
Mains voltage L3
PE
Motor terminal U
Motor terminal V
Motor terminal W
X2
Start/Stop
Control terminals +
X1 X3 X4
RA 1 RA 2
Boost
Motor
runs
Device
bypassed
X9 X10 X11 X12
X5 X6 X7 X8
RA 3
X13 X14
Fault
T2
Current transformer
Motor thermistor

VS II ...-50...75 9
7.4 Parameter settings
On the front panel there are 4 potentiometers by means of which the following settings can be
made.
Default setting of potentiometers:
Adjusting soft start
To adjust an optimum starting behavior, you should carry out a test run. Contrary to the default
settings, you should make the following basic potentiometer-settings.
Switch on the supply voltage and start acceleration. Watch the starting behavior and adapt the
appropiate parameters to your drive. At any rate, the starting voltage should be adjusted with the
potentiometer UStart so that the motor starts immediately. At the same time, unnecessary
humming with the motor being at rest is to be avoided.
The potentiometer is to be adjusted so that the requested acceleration time or starting
characteristics is achieved. The acceleration time should always be chosen as short as
possible, in order to keep the thermal stress acting on device and motor as small as possible.
This leads to short times until the bypass relays pull in and ensures good acceleration charac-
teristics while the power semiconductors and motor are less heated. This is of special impor-
tance in the case of high-inertia starting or high switching frequencies. The acceleration time,
however, has to be adjusted so that the motor reaches nominal speed before the internal
bypass relays close.
Warning:
If the adjusted acceleration time is too short, the internal bypass relays close
before the motor has reached nominal speed. This can cause damage to
the bypass relays.
Parameter Poti Setting range
Acceleration time Acceleration time adjustable from 0,5...10sec
Starting voltage UStart 40…80% of rated voltage
Deceleration time adjustable from 0,5...10sec
Starting current I 200 ... 500% rated current (only with external current transformer)
Potentiometer (acceler. time) = mid-position
Potentiometer UStart (starting voltage) = left stop
Potentiometer (deceler. time) = left stop
Potentiometer I (starting current / voltage ramp) = left stop
Fans, roller tracks, conveyor belts, etc. 50%, UStart 0%, 0%
Centrifuges, conveyor screws, mixers,
compressors, etc.
50%, UStart 50%, 50%
Pressure pumps, etc. 50%, UStart 50%, 50%

10 VS II ...-50...75
Adjusting soft stop
With the potentiometer , the deceleration time can be adjusted and thus the deceleration
behaviour of the drive determined. Usually, this function is selected only for pressure pump drives
or for drives coming to a standstill within a very short period of time. Thereby, a prolongation of
the deceleration time is achieved and pressure and/or torque surges are avoivded.
Note: Soft stop is only useful for pump drives or applications in the case of which
the drive comes to a stop immediately after switch off. In the case of drives
driving high-inertia loads, soft stop is not sensible.
Note: To enable soft stop, the VersiStart II, during the deceleration phase, has
to be supplied with power from the supply mains.
In the case of these devices, the cut-off voltage is factory-set to 70%.
The potentiometer is to be adjusted so that the requested deceleration time or
deceleration characteristic is reached.
Caution: Danger to life through electric shock!
Even if the motor is at rest, it is not physically separated from the mains.
Warning!
Make sure that the specified switching frequency is not exceeded!
Diagram 1
tt
U st art
mains
voltage
Start Stop
U
t
Device bypassed

VS II ...-50...75 11
7.5 Current-controlled start
With the VS II 50...75 devices, it is possible to realize current-controlled starts. For this purpose,
an external current transformer has to be connected to the control terminals X7/X8. The trans-
former suitable for the particular device can be taken from the Technical Data and is to be ordered
separately.
The motor lead T2 has to be led through the transformer, see figure 2. With the „I“ potentiometer,
the maximum starting current can be adjusted to a value between 200% and 500% of the rated
device current. The following diagram 2 shows the function of the adjustment potentiometers. The
potentiometer adjusts the steepness of the voltage ramp to the point where the current-
limiting threshold is reached. Should the motor not reach nominal speed within a certain time, the
device goes into fault condition and cuts off the motor voltage. The time elapsing until this cut-off
point is determined by the performance of the thyristor modules and varies depending on the
adjusted starting current „I“ (see diagram 3).
Diagram 2
t t
I
I
t
current limiting
U start
Start Stop

12 VS II ...-50...75
Diagram 3
Figure 2
Regelzeit - Timeout
0
5
10
15
20
25
2345
x Gerätenennstrom / Rated device current (Ie)
Timeout (s)

VS II ...-50...75 13
7.6 Starting frequency
It must be possible for the device or rather the power semiconductors to cool off sufficiently
between two starts.
If starts are carried out in too quick succession, there is the danger of thermally overloading and
thus destroying the power semiconductors. In this case, the thermal monitoring function of the
heat sink will not respond, as it requires some time until the heat loss of the power semicon-
ductors is dissipated into the heat sink. So, if the time interval between starts is too short, the heat
sink monitoring function is not able to keep up with the temperature rise of the semiconductors.
Operating the device for a long time in bypassed condition also will cause the power semicon-
ductors to cool off. Starting from a given starting time and starting current, it is possible with the
diagrams under section 8.2 to determine the maximum starting frequency per hour. With this
value, the required cooling time can be determined.
Warning:
If the time interval between starts is too short, there is the danger of
damaging or destroying the power semiconductors.
7.7 Devices with motor-PTC input
In the case of these devices, it is possible to connect a motor-PTC for motor temperature
monitoring. The sensor lines of the motor-PTC are to be connected to the terminals X5 and X6
().
If the motor temperature exceeds the switching threshold, the motor PTC triggers a fault. The soft
starter switches the motor off and is interlocked in fault mode. The fault is signalized by the yellow
LED repeatedly flashing two times and by an opening of the relay contact between the terminals
X13 and X14.
Let the motor cool dow, identify the root cause an remove the cause of the intense heating up of
the motor.
Attention!
To avoid EMI couplings into the electronics and they disturbances they involve, it is not allowed to
use free, unshielded strands in the motor cable for connecting the temperature sensor to the soft
starter.
The temperature sensor should be connected with the soft starter by a separate, and preferably,
shielded cable. The line ends are to be neatly terminated and unshielded lines must be kept as
short as possible.
The sensor cable is, as far as possible, to be laid separately from the power cables in separate
cable ducts. If crossings of power cables and control cables are inevitable, they should be
arranged at an angle of 90°.

14 VS II ...-50...75
8. LED indicators
On the device front panel there are 3 light-emitting diodes indicating the following operational
states.
On the control terminals X9 / X10 (RA 1), X11 / X12 (RA 2) and X13 / X14 (RA 3) three signaling
relays are available which signal the following operational states:
9. Fault
The device series VersiStart II monitors various fault conditions. If a fault is detected, the device
signals the fault with the red LED and with flashing of the yellow LED (flashing at constant
frequency). In the case of a fault, the signaling relay RA 3 is opened. The various fault conditions
are indicated via different flashing frequencies of the yellow LED.
LED Operational status
Green Device is connected to mains voltage
Yellow Start completed, device bypassed
Yellow - flashing
with increasing or decreasing frequency
Soft start / Soft stop
Red, yellow - flashing
with constant frequency
Fault, the flashing frequency shows the type of
fault
RA 1 Motor runs.
With the beginning of the soft start, the signaling contact RA 1 is closed. At the end of
the soft stop it is opened. With this contact, it is possible to control, for instance, a motor
contactor.
RA 2 Device bypassed.
When the start-up ramp is over and the motor is supplied with nominal voltage, the
bypass relays are closed.
RA 3 Fault.
Under normal operating conditions the signaling contact RA 3 is closed, it only opens
if a fault occurs.

VS II ...-50...75 15
9.1 Fault description
Yellow LED flashing x-times with
a short pause
Fault
number
Operational status
1x 0Voltage of power supply to the electronics is
too low
2x 1Heat sink temperature too high/device ther-
mally overloaded (please see also Point 7.6);
motor temperature too high
3x 2Current controll timeout
4x 3Phase failure 1
5x 4Phase failure 2
6x 5Phase failure 3
7x 6Frequency failure
8x 7Trigger failure in phase 1
10x 8Trigger failure in phase 3
11x 9Mains or motor circuit defective

16 VS II ...-50...75
9.2 Fault remedy
In case of a fault, please proceed as follows:
9.3 Resetting of faults
To reset a device failure, it is necessary to disconnect the device from the supply voltage. After
the cause of the fault has been remedied by trained expert personnel, the supply voltage can be
reconnected. The device works again under normal service conditions.
Devices with option B (wide-voltage-range power section) must be reset by disconnect the control
supply voltage USon the terminals X1 and X4.
Fault 0: Voltage of power supply to the electronics is too low. Check mains voltage on L1, L2,
L3, or check external auxiliary voltage.
Fault 1: Check the frequency of starts and the starting current and also observe the max.
ambient temperature. Give the device and/or the motor enough time between
starts to cool down. The heat dissipation can be improved by forced cooling, e.g.,
by means of a fan mounted underneath the device or by using a motor with sepa-
rately driven fan.
Fault 2: The motor does not reach final speed with the adjusted maximum starting current.
Increase the value of the starting current with the „I“ potentiometer.
Fault 3: Fault in phase L1 or motor line T1. Check fusing and wiring.
Fault 4: Fault in phase L2 or motor line T2. Check fusing and wiring.
Fault 5: Fault in phase L3 or motor line T3. Check fusing and wiring.
Fault 6: Incorrect mains frequency or unbalanced mains.
Fault 7: Trigger failure in device phase 1. Check motor wiring or return defective thyristor
module deveice to the producer in order to have it checked.
Fault 8: Trigger failure in device phase 3. Check motor wiring or return defective thyristor
module deveice to the producer in order to have it checked.
Fault 9: Mains fault:
The fuses are defective, or failure in the mains- or motor wiring.
Check fuses and wiring.

VS II ...-50...75 17
10. Technical data (standard) *
* For special voltages please see our supplement.
Type designation VersiStart VS II 400-50 VS II 400-65 VS II 400-75
Mains / motor voltage
acc. to DIN EN 50160 (IEC 38) 400V ±10% 50/60Hz
Control supply voltage USonly in
the case of option „B“
24VDC ±10%/150mA
max. Motor rating at 380/415V
(rated power) 25kW 30kW 37kW
Rated device current (Ie)50A 65A 75A
max. Power dissipation
- in operation related to the max.
frequency of starts
- in standby
30W
10W
min. Motor load 20% of the device rated current
Acceleration time 0,5 … 10s
Starting voltage 40 … 80% of rated voltage
Deceleration time 0,5 … 10s
Starting current range in the case
of current-controlled start
200% - 500% of the device rated current
Restart time 200ms
max. Switching frequency at 3x IN
and 5s
35/h 25/h 20/h
Cross-sect. area for connection:
Control terminals
Power terminals
0,2-2,5mm²/24-12 AWG
solid 1-35mm², 18-2 AWG/stranded 1-25mm ², 18-3 AWG
Tightening torque
(power terminals)
25mm² = 2,5 Nm 35mm² = 4,5 Nm
25mm² = 22 Ibs in 35mm² = 40 Ibs in
I²t - Power semiconductors 6600A²s 11200A²s 25300A²s
Contact rating of
output relays RA 1 / RA 2 / RA 3
3A/250V AC
3A/30V DC
Input resistance Control inputs 10kOhm
Surge strength 4kV
Weight 1,5kg 1,5kg 2,2kg
Special voltages (optional) 230V/480V/wide-voltage range 200-480V and 400-600V
with control supply voltage US24VDC±10%/150mA („B“)
Recommended current transfor-
mer, order number 56600.00001 56600.00002

18 VS II ...-50...75
10.1 Environmental conditions
1) The reductions refer to rated power output.
11. Dimensioning rules
11.1 Dimensioning of pre-fuses
Pre-fuses F can be dimensioned according to the following instructions.
Basically, two types of fuse protection are available for the user.
1. Fusing according to allocation type „1“, DIN EN 60947-4-2.
After a short circuit, the VersiStart II device is allowed to be inoperative and repair work is
possible.
2. Fusing according to allocation type „2“, DIN EN 60947-4-2.
After a short circuit, the device must be suitable for further use. However, there is the
danger that the contacts of the bypass or braking relays weld. Therefore, if possible, these
contacts are to be checked prior to reconnecting these contacts to the mains supply. If this
check cannot be carried out by the user, the device has to be returned to the producer in
order to have it checked.
The following dimensioning information refers to the below operating conditions:
• Use of standard asynchronous motors
• Standard acceleration and/or deceleration times
• Switching frequencies not exceeding the values specified in the data sheet
Fusing according to allocation type „1“
As pre-fuses we recommend to use line protection fuses (utilization category gL) or automatic
circuit-breakers with type K tripping characteristic. In the case of automatic circuit-breakers the
tripping characteristic of the type series is to be taken into account. With 2x Inthe tripping time
should be at least 20s (I1).
Storage temperature -25 ... 70°C
Ambient temperature 0 ... 45°C up to an installation altitude of 1000m,
not exposed to moisture condensation
Power reduction1) above 45°C - 2% per 1°C up to max. 60°C and
altitudes above 1000m -2% per 100m
Degree of protection IP 20
Environment Overvoltage categ. III (TT / TN-systems),
pollution degree 2
Installation class 3

VS II ...-50...75 19
The fuse values are to be determined by taking the conductor cross-sectional area of the wiring
into account. Depending on the rated motor current, the maximally occurring starting current
(normally up to the 5-fold rated device current) and the starting frequency, the wiring cross-
sectional area is to be determined. Table 1 shows the values for numerous applications, i.e., with
a 3-fold nominal current as mean starting current and a max. starting time of 10s. In the case of
parameter values exceeding these values, it may be necessary to adapt the fuse value accor-
dingly.
Note: Wiring cross-sectional area according to DIN VDE 0100-430,
DIN EN 57100-430.
Table 1
Fusing according to allocation type „2“:
The power semiconductors are to be protected by fuses of the utilization class gR (semiconductor
protection fuses, high-speed fuses). However, since these fuses do not ensure line protection, it
is necessary to use additionally line protection fuses (utilization category gL).
To protect the semiconductors it is necessary to select gR-fuses featuring cutoff-I²t-values which
are approx. 10-15% below the I²t-value of the power semiconductor (see technical data). In this
connection, the fuse rating of the selected fuse should not be smaller than the starting current to
be expected.
Notes:
1. Advanced control does not prescribe the use of semiconductor protection fuses. However,
for some UL- or CSA-listed devices there are exceptions which are indicated in the
relevant commissioning instructions.
2. On the basis of the I²t-value of the power semiconductors, the starting time and possibly
the max. starting current, the fuse supplier is able to select a suitable type. Due to the great
variety of producers, sizes and types, Advanced Control does not recommend any
particular fuses.
3. If the value of the fuse or the cutoff-I²t-value is selected too small, it may happen that the
semiconductor fuse reacts during the starting phase or during deceleration.
Rated device
current (techn. data)
Device type Fuse value
in the case of
allocation type 1
Starting frequencies
Starts / h
50A VS II ...-50 100A 35
65A VS II ...-65 125A 25
75A VS II ...-75 125A 30