j
setting the standard
INTORQ BFK468
Electromagnetically released spring−applied brake
Operating Instructions
www.intorq.com
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This documentation applies to ...
BFK468
BFK46825−002.iso/dms
Product key
Product key INTORQ B FK LLL
Legend for INTORQ BFK468 product key
Product group Brakes
Product family Spring−applied brake
Type 468
Size 18, 20, 25, 31
Design E − adjustable (brake torque can be reduced via adjuster nut)
N − not adjustable
Not coded: Supply voltage, hub bore, options
−
LL L
2
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Identification
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Package label
Manufacturer Bar code
Type (see product key) Type No.
Name Rated torque Quantity per box
Release/holding voltage Release/holding power Packing date
Additional information CE designation
Nameplate
Manufacturer CE designation
Type (see product key)
Rated voltage Rated power Hub diameter
Type No. Rated torque Production date
Document history
Material number Version Description
13190474 1.0 01/2007 TD09 First edition
33002357 2.0 11/2012 TD09 Complete revision
0Fig. 0Tab. 0
Example
BFK458−002.iso/dms
Example
BFK468−001.iso/dms
3
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Contentsi
1 Preface and general information 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 About these Operating Instructions 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Terminology used 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Conventions used 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Abbreviations used 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Notes used 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 Scope of supply 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7 Disposal 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.8 Drive systems 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.9 Legal regulations 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Safety instructions 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 General safety information 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Application as directed 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Technical data 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Product description 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Brake torques 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Rated data 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Operating times 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Operating frequency / friction work 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Emission 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Mechanical installation 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Necessary tools 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Mounting 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Installation 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Electrical installation 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Bridge/half−wave rectifiers (option) 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Electrical connection 31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Commissioning and operation 34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Functional test 34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Reducing the brake torque 38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 During operation 39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Maintenance/repair 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Wear of spring−applied brakes 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Inspections 41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 Maintenance operations 42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4 Spare−parts list 44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5 Spare parts order 45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Troubleshooting and fault elimination 46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
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Preface and general information1
1 Preface and general information
1.1 About these Operating Instructions
| These Operating Instructions will help you to work safely on and with the
spring−applied brake with electromagnetic release. They contain safety instructions
that must be followed.
| All persons working on or with the electromagnetically released spring−applied brakes
must have the Operating Instructions available and observe the information and notes
relevant for them.
| The Operating Instructions must always be in a complete and perfectly readable
condition.
1.2 Terminology used
Term In the following text used for
Spring−applied brake Spring−applied brake with electromagnetic release
Drive system Drive systems with spring−applied brakes and other drive
components
1.3 Conventions used
This documentation uses the following conventions to distinguish different types of
information:
Spelling of numbers Decimal separator Point The decimal point is always used.
Symbols
For example: 1234.56
Page reference Reference to another page with additional information
For example: 16 = see page 16
Document reference Reference to another documentation with additional
information
For example: Operating instructions
Wildcard Wildcard for options, selections
For example: BFK458− = BFK458−10
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Preface and general information1
1.4 Abbreviations used
Abbreviation Unit Name
I [A] Current
I
N
M
A
M
N
n
max
P
N
Q [J] Quantity of heat/energy
Q
E
Q
R
Q
Smax
R
N
S
h
S
hue
S
hmax
s
L
s
LN
s
Lmin
s
Lmax
t
1
t
2
t
11
t
11
t
12
U [V] Voltage
U
N
[A] Rated current at 20 °C and rated voltage
[Nm] Tightening torque of the fixing screws
[Nm] Characteristic torque of the brake / clutch
[r/min] Maximum speed during the slipping time t3
[W] Rated coil power at rated voltage and at 20 °C
[J] Maximally permissible friction energy for one−time switching
[J] Braking energy, friction energy
[J] Maximally permissible friction energy for cyclic switching
[Ohm] Rated coil resistance at 20 °C
[1/h] Operating frequency, i.e. the number of periodical switching opera-
tions
[1/h] Transition operating frequency for thermal characteristic of the
brake / clutch
[1/h] Maximally permissible operating frequency, depending on the fric-
tion energy per switching operation
[mm] Air gap, i.e. lift of the armature plate while the brake is switched, or
lift of the armature part when the clutch is switched
[mm] Rated air gap
[mm] Minimum air gap
[mm] Maximum air gap
[s] Engagement time, i.e. sum of the delay time and the braking torque
exit time t
= t11 + t
1
12
[s] Disengagement time, i.e. time between switching the stator and
reaching 0.1 M
K
[s] Slipping time, i.e. engagement time of the brake (after t11) until
standstill
[m] Delay during engagement, i.e. time from switching off the supply
voltage to the beginning of the torque rise
[m] Rise time of the braking torque, i.e. time from the start of the torque
rise until reaching the braking torque
[V] Rated coil voltage
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Preface and general information1
1.5 Notes used
The following pictographs and signal words are used in this documentation to indicate dangers
and important information:
Safety instructions
Structure of safety instructions:
Danger!
Characterises the type and severity of danger
Note
Describes the danger
Possible consequences:
| List of possible consequences if the safety instructions are disregarded.
Protective measure:
| List of protective measures to avoid the danger.
Pictograph and signal word Meaning
Danger of personal injury through dangerous electrical voltage
Danger!
Danger!
Stop!
Application notes
Pictograph and signal word Meaning
Note!
Tip!
Reference to an imminent danger that may result in death or serious
personal injury if the corresponding measures are not taken.
Danger of personal injury through a general source of danger
Reference to an imminent danger that may result in death or serious
personal injury if the corresponding measures are not taken.
Danger of property damage
Reference to a possible danger that may result in property damage if the
corresponding measures are not taken.
Important note to ensure troublefree operation
Useful tip for simple handling
Reference to another documentation
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Preface and general information1
1.6 Scope of supply
1.7 Disposal
1.8 Drive systems
After receipt of the delivery, check immediately whether it corresponds to the accompanying
papers. INTORQ does not grant any warranty for deficiencies claimed subsequently.
| Claim visible transport damage immediately to the forwarder.
| Claim visible deficiencies / incompleteness immediately to INTORQ GmbH & Co.KG.
The spring−applied brake consists of different types of material.
| Recycle metals and plastics.
| Ensure professional disposal of assembled PCBs according to applicable
environmental regulations.
Labelling
Drive systems and components are unambiguously designated by the indications on the
nameplate.
Manufacturer: INTORQ GmbH & Co KG, Wülmser Weg 5, D−31855 Aerzen
| The spring−applied INTORQ brakeis also delivered in single modules and individually
combined to its modular design. The data − package labels, nameplate, and type code
in particular − apply to one complete stator.
| If single modules are delivered, the labelling is missing.
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Preface and general information1
1.9 Legal regulations
Liability
| The information, data and notes in this documentation met the state of the art at the
time of printing. Claims referring to products which have already been supplied cannot
be derived from the information, illustrations and descriptions.
| We do not accept any liability for damage and operating interference caused by:
– inappropriate use
– unauthorised modifications to the product
– improper working on and with the product
– operating faults
– disregarding the documentation
Warranty
| Terms of warranty: see terms of sale and delivery of INTORQ GmbH & Co. KG.
| Warranty claims must be made to INTORQ immediately after detecting defects or
faults.
| The warranty is void in all cases where liability claims cannot be made.
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Safety instructions2
2 Safety instructions
2.1 General safety information
| INTORQ components ...
– ... must only be applied as directed.
– ... must not be commissioned if they are noticeably damaged.
– ... must not be technically modified.
– ... must not be commissioned if they are mounted incompletely.
– ... must not be operated without the required covers.
– ... can hold live as well as moving or rotary parts during operation according to their
degree of protection. Surfaces may be hot.
| For INTORQ components ...
– ... the documentation must always be kept at the installation site.
– ... only permitted accessories are allowed to be used.
– ... only original spare parts of the manufacturer are allowed to be used.
| All specifications of the corresponding enclosed documentation must be observed.
This is vital for a safe and trouble−free operation and for achieving the specified product
features.
| Only qualified, skilled personnel are permitted to work on and with INTORQ
components.
In accordance with IEC 60364 or CENELEC HD 384, qualified, skilled personnel are
persons ...
– ... who are familiar with the installation, mounting, commissioning, and operation of
the product.
– ... who have the qualifications necessary for their occupation.
– ... who know and apply all regulations for the prevention of accidents, directives, and
laws relevant on site.
| Risk of burns!
– Surfaces may be hot during operation! Provide for protection against accidental
contact.
| Risk of injury due to a rotating shaft!
– Wait until the motor is at standstill before you start working on the motor.
| The friction lining and the friction surfaces must by no means have contact to oil or
grease since even small amounts reduce the brake torque considerably.
10
| The brake is designed for operation under the environmental conditions that apply to
IP54. Because of the numerous possibilities of using the brake, it is however necessary
to check the functionality of all mechanical components under the corresponding
operating conditions.
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Safety instructions2
2.2 Application as directed
| INTORQ components ...
– ... are intended for use in machinery and systems.
– ... must only be used for the purposes ordered and confirmed.
– ... must only be operated under the ambient conditions prescribed in these
Operating Instructions.
– ... must not be operated beyond their corresponding power limits.
Any other use shall be deemed inappropriate!
Possible applications of the INTORQ spring−applied brake
| Humidity: no restrictions
– In case of formation of condensed water and moisture: provide for appropriate
ventilation to ensure that all components will dry quickly.
| Ambient temperature:
– −20 °C to +40 °C (standard)
| At high humidity and low temperature:
– Take measures to protect armature plate and rotor from freezing.
| Protect electrical connections against contact.
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Technical data3
3 Technical data
3.1 Product description
BFK46820−003.iso/dms
Fig. 1 Design of the BFK468 spring−applied brake: basic module E (complete stator) + rotor + hub +
flange
1 Complete stator 3 Complete rotor 6 Flange
1.2 Compression springs 4 Hub 9 Sleeve bolts
2 Armature plate 5 Shaft 31 Torque adjustment ring
KL 46820−001.iso/dms
Fig. 2 Design of the BFK468 spring−applied brake: basic module N (complete stator) + rotor + hub +
flange
1 Complete stator 3 Complete rotor 6 Flange
1.2 Compression springs 4 Hub 9 Sleeve bolts
2 Armature plate 5 Shaft
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Technical data3
3.1.1 General information
The spring−applied brake is designed for the conversion of mechanical work and kinetic energy
into heat. Due to the static brake torque, the brake can hold loads without speed difference.
Emergency braking is possible at high speed. The more friction work, the higher the wear.
(Operating speeds 16)
The BFK468− spring−applied brake is a single−disk brake with two friction surfaces.
Several compression springs (1.2) generate the braking torque by friction locking. The brake
is released electromagnetically by a reduction of the holding current via an INTORQ bridge
half−wave rectifier.
The stator (1) is designed to be of thermal class F. The limit temperature of the coils is 155°C.
3.1.2 Braking
During braking the rotor (3) axially slidable on the hub (4) is pressed against the friction
surface by the inner and outer springs (1.2) via the armature plate. The asbestos−free
friction linings ensure a high braking torque and low wear. The braking torque transmission
between hub (4) and rotor (3) is effected by means of toothing.
3.1.3 Brake release
In braked state, there is an air gap "s
To release the brake, the coil of the stator (1.1) is excited with the DC voltage provided. The
magnetic force generated attracts the armature plate (2) towards the stator (1.1) against the
spring force. The rotor (3) is then released and can rotate freely.
3.1.4 Brake torque reduction
For basic module E (adjustable), the spring force and thus the brake torque can be reduced
by unscrewing the adjuster nut (8), ( 38).
3.1.5 Manual release (optional for sizes 18 to 25)
The manual release is optionally available for short−term releases when no voltage is applied.
The manual release can be retrofitted.
" between the stator (1.1) and the armature plate (2).
L
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Technical data3
3.1.6 Microswitch (optional)
The manufacturer offers the microswitch for air−gap or wear monitoring. The user must provide
the corresponding electrical connection ( 31et seqq.).
When air−gap monitoring, the motor does not start before the brake has been released. With
this set−up, all possible faults are monitored. For example, in the event of defective rectifiers,
interrupted connection cables, defective coils, or excessive air gaps the motor will not start.
When checking the wear, no current will be applied to the brake and the motor if the air gap
is too large.
3.1.7 Encapsulated design (optional)
This design not only avoids the penetration of spray water and dust, but also the spreading
of abrasion particles outside the brake. This is achieved by:
| a cover seal over the armature plate and rotor,
| a cover in the adjuster nut,
| a shaft seal in the adjuster nut for continuous shafts (option).
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Technical data3
3.2 Brake torques
Stop!
Please observe that engagement times and disengagement times change
depending on the brake torque.
Size 18 20 25 31
Rated torques [Nm],
relating to the
relative speed Dn =
100 rpm
Depending on the
rated torque (spring
assembly), the angle
of rotation for the
braking torque
reduction can be
60°, 120° or 180°
for basic module E.
Characterist
ic torque
[Nm] [Nm] [Nm] [Nm] [Nm] [Nm] [Nm]
100 N/E 6.4 170 N/E 19.8 260 N/E 16.5
115 N/E 6.4 200 N/E 19.8 300 N/E 8.2 720 N
130 N/E 6.4 230 N/E 9.9 350 N/E 8.2 960 N
150 N/E 3.2 260 N/E 9.9 400 N/E 8.2 1200 N
165 N/E 3.2 300 N/E 19.8 445 N/E 16.5 1440 N
185 N/E 6.4 345 N/E 19.8 490 N/E 8.2 1680 N
200 N/E 6.4 400 N/E 19.8 520 N/E 16.5 1920 N
235 N/E 6.4 440 N/E 19.8 600 N/E 16.5 2160 N
265 N/E 6.4 480 N/E 19.8 700 N/E 16.5 2400 N
300 N/E 6.4 520 N/E 19.8 800 N/E 16.5
Torque
reduction E
per detent
position
Characterist
ic torque
Torque
reduction E
per detent
position
Characterist
ic torque
230 N
Torque
reduction E
per detent
position
Characterist
ic torque
Tab. 1 N.....Brake torque for module N (without torque adjustment ring)
E......Brake torque for module E (with torque adjustment ring)
Holding brake with emergency stop operation (s
Service brake (s
Standard braking torque
approx. 4.0 x sLN)
L max.
3.2.1 Basic module E, brake torque reduction
For basic module E, the braking torque can be reduced by means of the torque adjustment
ring in the stator. The torque adjustment ring must only be screwed out up to the maximum
projection "h
", 16 and 38.
Emax.
approx. 2.0 x sLN)
L max.
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Technical data3
3.2.2 Brake torques depending on the speed and permissible limit speeds
Type Rated torque at
BFK468−18
BFK468−20 75 68 3700
BFK468−25 73 66 3000
BFK468−31 69 −−−−− 2300
Dn = 100 rpm
[%] 1500 3000 maximum [rpm]
100
Tab. 2 Brake torques depending on the speed and permissible limit speeds
Braking torque at Dn0 [rpm] [%] max. speed
mounting position
77 70
66
Dn
0max.
horizontal
4400
with
3.3 Rated data
Type sLN
BFK468−18
BFK468−20
BFK468−25
BFK468−31 1.5 1.0 3.0 15.0 18.0 −−−−
+0.1 mm
−0.05 mm
[mm] [mm] [mm] [mm] min. 1) [mm] max. [mm] [mm]
0 4
0 5
s
L max.
service
brake
1 0 0.6 3.0 10.0 13.0 15
1 25
s
Lmax.
holding
brake
0.75 4.5 15.5 20.0 19.5
Max.
adjustment,
permissible
wear
distance
4.0 12.0 16.0 17
Rotor thickness Excess
of the torque
adjustment
ring h
Emax.
1) The friction lining is designed such that the brake can be adjusted at least 5 times.
Type Pitch circle Tightening torque Weight
[mm] Thread Screws [Nm] Complete
BFK468−18 196 6 x M8 36.1 23 13.4
BFK468−20 230
BFK468−25 278 31.0
BFK468−31 360 8 x M16 302 −−−−− 55.1
Tab. 3 Characteristics of BFK468 spring−applied brake
6 x M10 71 40
lever [Nm]
of complete stator
[kg]
20.0
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Technical data3
Type Electrical power P
[W] [V] [W]
BFK468−18 85 / 340
BFK468−20 100 / 408
BFK468−25 132 / 528
BFK468−31 230 / 920 360 / 180 140.9
1)
Coil power at 20 _C
Tab. 4 Coil voltage/coil resistance of BFK468
3.3.1 Project planning notes
| The brakes are dimensioned in such a way that the given characteristic torques are
reached safely after a short run−in process.
1)
Release voltage/holding voltage
U
205 / 103 123.5
360 / 180 381.5
205 / 103 106.1
360 / 180 317.6
205 / 103 79.6
360 / 180 245.5
Coil resistance RN ±8 %
| Due to the fluctuating properties of the organic friction linings used and the alternating
environmental conditions, deviations of the given braking torques may occur. These
must be considered by corresponding safety measures in the dimensioning process.
Especially with humidity and alternating temperatures, an increased breakaway torque
may occur after a long downtime.
| Check the braking torque if the brake is inserted on the customer’s friction surfaces.
| If the brake is used as a pure holding brake without dynamic load, the friction lining
must be reactivated regularly.
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Technical data3
3.4 Operating times
BFKXXX−011.iso/dms
Fig. 3 Operating times of the spring−applied brakes
Engagement time t
t
1
Disengagement time (up to M = 0.1 Mr)t12Rise time of the brake torque
t
2
Characteristic torque U Voltage
M
K
Type Rated torque at
Dn = 100 rpm
MK 1) Q
[Nm] [J] [h−1] t
BFK468−18 150 60000 20 26 30 56 70
BFK468−20 260 80000 19 102 112 168 106
BFK468−25 400 120000 15 60 135 197 120
BFK468−31 1200 300000 13 65 133 198 250
1) Minimum braking torque when all components are run in
Tab. 5 Switching energy − operating frequency − operating times
Max. permissible
friction work per
operation only
E
Transition
operating
frequency
s
hue
Reaction delay during engagement
11
Operating times [ms] at s
DC engagement Disengage
11
t
12
LN
t
1
t
Engagement time
The transition from brake−torque free state to holding braking torque is not free of time lags.
2
18
A braking torque reduction via the torque adjustment ring prolongs the engagement time and
reduces the disengagement time.
| The engagement times are valid for DC switchingwith a spark suppressor.
– Spark suppressors are available for the rated voltages.
– Connect the spark suppressors in parallel to the contact. If this is not admissible for
safety reasons, e.g. with hoists and lifts, the spark suppressor can also be
connected in parallel to the brake coil.
– Circuit proposals: 31, Fig. 15
| The engagement times are approx. 5 times longer with AC switching.
– Connection: 31, Fig. 14
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Technical data3
Disengagement time
The disengagement time is the same for DC and AC switching.
3.5 Friction work / operating frequency
Q [J]
1000000
31
10000
1000
25
18
20
100000
A
100
1
Fig. 4 Switching energy as a function of the operating frequency
Switching energy Q Operating frequency s
S
+
hmax
lnǒ1 *
B
* S
10
hue
Q
Q
The permissible operating frequency "S
If the operating frequency "S
100
R
Ǔ
E
" is given, the permissible heat quantity "Q
h
1000 10000
Q
smax
+ Q
hmax
ǒ
1 * e
E
" depends on the heat quantity "QR" (see Fig. 4).
-1
S [h ]
h
h
*S
hue
S
h
BFK468−003.des/dms
Ǔ
" can be
smax
calculated.
With high speed and friction work, the wear increases strongly, because very high
temperatures occur at the friction faces for a short time.
19
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Technical data3
3.6 Emission
Electromagnetic compatibility
Note!
If an INTORQ rectifier is used for the DC switching of the spring−applied brake and if the
operating frequency exceeds five switching operations per minute, the use of a mains filter
is required.
If the spring−applied brake uses a rectifier of another manufacturer for the switching, it
may become necessary to connect a spark suppressor in parallel with the AC voltage.
Spark suppressors are available on request, depending on the coil voltage.
The user must ensure compliance with EMC Directive 2004/108/EC using
appropriate controls and switching devices.
Heat
Since the brake converts kinetic energy as well as mechanical and electrical energy into heat,
the surface temperature varies considerably, depending on the operating conditions and
possible heat dissipation. Under unfavourable conditions, the surface temperature can reach
130 _C.
Geräusche
Das Schaltgeräusch beim Verknüpfen und Trennen ist unterschiedlich groß. Einflussgrößen
sind Lüftweg, Bremsmoment und Bremsengröße.
Je nach Eigenschwingung im eingebauten Zustand, Betriebsbedingungen und Zustand der
Reibflächen kann Quietschen während des Abbremsvorganges auftreten.
Others
The abrasion of the friction parts produces dust.
In case of high load, the friction face will become so hot that odours may occur.
20
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Mechanical installation4
4 Mechanical installation
Stop!
Toothed hub and screws must not be lubricated with grease or oil!
4.1 Necessary tools
Type Torque key
Insert for hexagon socket
Measuring
range [Nm]
BFK468−18
BFK468−20
BFK468−25 14 155 − 165
BFK468−31 40 − 200
20 − 100
screws
Wrench size
[mm]
6 x 1/2"
square
1
8 x
/2"
square
14 x 1/2"
square
Wrench size of open−jawed spanner [mm] Hook wrench
*
Sleeve bolts Nuts / bolts 2kt lever Diameter
15
17
24 − / − −−−−− −−−−−
Manual
release
− / 10
10 110 − 115
12 135 − 145
DIN 1810
design A
[mm]
Box spanner
for flange
installation,
outside
Wrench size
[mm]
13 x 1/2"
square
17 x 1/2"
square
24 x 1/2"
square
* for flange mounting insertion with journal guide
Feeler gauge Caliper gauge Multimeter
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Mechanical installation4
4.2 Mounting
4.2.1 Preparation
1. Unpack spring−applied brake.
2. Check for completeness.
3. Check nameplate data, especially rated voltage.
4.3 Installation
When you have ordered a version with manual release or flange, attach these units first.
4.3.1 Installation of the hub onto the shaft
Stop!
In reverse operation, it is recommended to additionally glue the hub to the shaft!
KL BFK46825−001−a.iso
Fig. 5 Mounting the hub onto the shaft
4 Hub 4.2 Circlip 15 End shield
4.1 Keyway
1. Press hub (4) onto the shaft.
2. Secure hub against axial displacement, e.g. using a circlip (4.2).
22
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Mechanical installation4
4.3.2 Installation of the brake
Stop!
| Minimum requirement of the end shield (15):
–Material S235 JR or C15 (other materials after consultation with INTORQ),
–Levelness 0.10 mm,
–Axial runout 0.10 mm,
–Roughness Rz 10 to Rz 16
| When dimensioning the thread depth in the end shield (15), the permissible
wear distance must be taken into consideration, 16.
| Condition of the end shield (15):
–It has to be free of grease and oil.
Mounting the flange without additional screws
KL BKF46825−001−d.iso
Fig. 6 Flange assembly BFK468
6 Flange 15 End shield
1. Hold the flange (6) against the end shield (15) and check the pitch circle and retaining
screw drill hole threading.
2. Assemble the brake with the corresponding screw set (see chapter 4.3.2).
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Mechanical installation4
Fig. 7 Mounting the brake
BFK46825−008.iso/dms
3 Complete rotor 6 Flange 15 End shield
4 Hub
1. Push the rotor (3) onto the hub (4) and check whether it can be moved by hand
(Fig. 7).
Stop!
Please note the following for the version "brake with shaft sealing ring in torque
adjustment ring":
2. Lightly lubricate the lip of the shaft seal with grease.
3. When assembling the stator (1), push the shaft sealing ring carefully over the shaft.
– The shaft should be located concentrically to the shaft seal.
24
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Mechanical installation4
Fig. 8 Mounting of the complete stator
1 Complete stator 7 Connector block
10 Cheese head screw 15 End shield
BFK46825−003.iso
4. Screw the complete stator (1) onto the end shield (15) using the set of screws (10)
provided and a torque key.
5. Remove and dispose of the connector blocks (7).
BFK46825−005.iso/dms
Fig. 9 Inspection of the air gap s
s
AR
1 Stator 10 Cheese head screws
L
9 Sleeve bolts 15 End shield
1. Check the air gap "sL" near the screws (10) using a feeler gauge and compare the
values to the values for "s
" in the table ( 16).
LN
Note!
Do not insert feeler gauge more than 10 mm between armature plate (2) and
stator (1.1)!
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Mechanical installation4
Fig. 10 Adjusting the air gap
BFK46825−006.iso
1 Stator 10 Cheese head screw
9 Threaded sleeves
Please adjust if the value for "sL" is outside the tolerance of "sLN":
4.3.3 Assembly of the cover seal
BFK46825−007.iso/dms BFK46820−008.iso/dms
Fig. 11 Assembly of the cover ring
1 Stator 6 Flange 13 Cover ring
2 Armature plate 10 Cheese head screw
1. Pull the cable through the seal (13).
26
2. Push the seal (13) over the complete stator (1).
3. Press the lips of the cover seal (13) into the groove of complete stator (1) and flange
(6)/end shield.
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Mechanical installation4
4.3.4 Assembly of the manual release sizes 18 to 25
BFK46825−009.iso
Fig. 12 Assembly of the manual release for brake sizes 18−25
1 Stator (here: design E) 12.1 Manual release lever with control
button
2 Armature plate 12.2 Manual release shackle 12.11 Clip
3 Complete rotor 12.3 Eyebolts 12.12 Trunnion
10 Cheese head screw 12.5 Compression spring
12.10 Pin
Stop!
Before assembly of the manual release, the brake must be mounted onto the
motor end shield and the air gap must be adjusted correctly, further
documentation for BKF468.
1. Hammer the pins (12.10) into the bore holes of the armature plate (2). (When the
brake has already been installed, cushion the impact energy by pressing against the
opposite side of the armature plate).
2. Screw the eyebolts (12.3) into the stator (1) and align them according to the hole
spacing of the manual release shackle (12.2).
3. Put clips (12.11) with elongated hole onto the pins (12.10), align thread towards the
eyebolts (12.3).
4. Insert the compression springs (12.5) between clips (12.11) and eyebolts (12.3).
5. Push the trunnions (12.12) into the bore holes of the shackle (12.2), cross hole to the
outside.
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Mechanical installation4
6. Push the cheese head screws (12.13) through the cross holes of the trunnions
(12.12).
7. Locate the shackle (12.2) with trunnions (12.12) and cheese head screws (12.13)
such onto the back of the stator (1) that the cheese head screws (12.13) are led
through the eyebolts (12.3) and the compression springs (12.5).
8. Screw the cheese head screws (12.13) into the clip threads (12.11).
9. Adjust gap "s" using the cheese head screws (12.13), (values for "s " 28.
10. Secure the adjustment of the cheese head screws (12.13) using the threaded pin
(12.9) in the clip (12.11).
Note!
Dimension "s + sL" can be checked through the difference of the fitting length
of the compression springs when the armature plate is attracted towards the
stator and the manual release has been adjusted.
11. If necessary, screw the lever (12.1) into the shackle (12.2).
Type sL (mm) s +
BFK468−18 0.4 2.0 2.4
BFK468−20 0.4 2.0 2.4
BFK468−25 0.5 2.5 3.0
Tab. 6 Adjustment setting for manual release
0.1
(mm) s + sL (mm)
Stop!
Dimension "s" must be observed! Check air gap "sL".
BFK46820−006.iso
28
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Electrical installation5
5 Electrical installation
5.1 Bridge/half−wave rectifiers (option)
BEG−561
After a defined overexcitation time, the bridge/half−wave rectifiers change from bridge
rectification to half−wave rectification. Depending on the dimensioning of the load, the
switching performance can thus be improved or the power can be derated.
Fig. 13 BEG−561 attachment features
5.1.1 Technical data
Rectifier type Bridge/half−wave rectifier
Output voltage for bridge rectification 0.9 x U
Output voltage for half−wave rectification 0.45 x U
Ambient temperature (storage/operation) [°C] −25 ... +70
Type Input voltage U
BEG−561−255−030
BEG−561−255−130 1.870 1.300 1.170
BEG−561−440−030−1
BEG−561−440−130 3.0 1.5 2.300 1.300 1.200
Input voltage U1 (40 ... 60 Hz)
Tab. 7 Data for bridge/half−wave rectifier type BEG−561
min.
[V ~ ]
160
230
(40 Hz ... 60 Hz)
rated
[V ~ ]
230 255 3.0 1.5
400 440
1
max.
[V ~ ]
Max. current I
bridge
[A]
1.5 0.75 0.500 0.300 0.270
1
1
max.
half−wave
[A]
Overexcitation time tue ( ±20%)
with U
[s]
0.430 0.300 0.270
1 min
with U
[s]
rated
with U
1
max
[s]
1
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Electrical installation5
5.1.2 Reduced switch−off times
When switching on the DC side (fast engagement), switching on the AC side is also required!
Otherwise, there will be no overexcitation during power−on.
Delayed engagement Fast engagement
1234 65
Mains Bridge Coil
5.1.3 Permissible current load − ambient temperature
12 34 65
1 For screw assembly with metal surface (good heat dissipation)
2 For other assembly (e.g. glue)
5.1.4 Assignment: Bridge/half−wave rectifier − brake size
Rectifier type AC voltage Coil voltage
[V AC] [V DC]
BEG−561−255−030
BEG−561−255−130 BFK468−25
BEG−561−440−030−1
BEG−561−440−130
230
400
±10%
±10%
release/holding
205 / 103
360 / 180
BFKXXX−008.iso
Assigned brake
BFK468−18
BFK468−20
BFK468−18
BFK468−20
BFK468−25
BFK468−31
30
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Electrical installation5
5.2 Electrical connection
Danger!
The brake must only be electrically connected when no voltage is applied!
5.2.1 Circuit proposals
Fig. 14 AC switching, delayed engagement
Bridge rectifier/half−wave rectifier
Fig. 15 DC switching, normal engagement
Bridge rectifier/half−wave rectifier
BFKXXX−007.iso
BFKXXX−002.iso
Stop!
For switching on the DC side the brake must be operated with a spark
suppressor to avoid impermissible overvoltages.
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Electrical installation5
KL−BFKXXX−003.iso
Fig. 16 With microswitch (release check); connection diagram also valid for star connection
DC voltage depending on coil voltage Spark suppressor
KL−BFKXXX−004.iso
Fig. 17 With microswitch / wear check addition for all circuits; connection diagram also valid for star
connection
32
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Tip!
During operation according to Fig. 17 the air gap is only monitored when no voltage is applied
to the brake. This makes sense because it is possible that when the current flows only one
side of the armature plate is attracted at first. This misalignment may cause a simulation of the
maximum air gap and the actuation of the microswitch. If there is no closed contact in parallel
to the microswitch contact, motor and brake will be switched off. The microswitch contact is
closed again when the armature plate is completely released − the release is repeated again −
because of the small difference−contact travel of the microswitch.
To avoid this misinterpretation of the microswitch signal, the signal should only be processed
when no voltage is applied to the brake.
Electrical installation5
1. Mount the rectifier in the terminal box. With motors of the insulation class "H", mount
the rectifier in the control cabinet. Permissible ambient temperature for the rectifier
−25 _C to +70 _C.
2. Compare the coil voltage of the stator to the DC voltage of the rectifier installed.
Conversion of supply voltage to DC voltage:
– Bridge rectifier: U
– Half−wave rectifier: U
– Permissible deviation of U
3. Select suitable circuit diagram ( 31).
= UAC ¯ 0.9
DC
= UAC ¯ 0.45
DC
and UDC up to ±10%.
coil
Note!
Selection of the rectifier at voltages ³ 460 V AC catalogue "Electronic
switchgear and accessories" Chapter spark suppressors and rectifiers.
4. Motor and brake must be wired according to the requirements of the engagement
time.
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Commissioning and operation6
6 Commissioning and operation
Danger!
The live connections and the rotating rotor must not be touched.
The drive must not be running when checking the brake.
6.1 Functional test
In the event of failures, refer to the troubleshooting table, 46. If the fault cannot be
eliminated, please contact the aftersales service.
6.1.1 Release / voltage check
For brakes without microswitch only
Danger!
The brake must be free of residual torque. The motor must not rotate.
Danger!
Live connections must not be touched.
1. Remove two bridges from the motor terminals. Do not switch off the DC brake supply.
When connecting the rectifier to the neutral point of the motor, the PE conductor must
also be connected to this point.
2. Connect the mains supply.
3. Measure the DC voltage at the brake.
– Compare the DC voltage measured with the voltage specified on the nameplate. A
10 % deviation is permissible.
4. Check air gap "s
5. Switch off the current.
". It must be zero and the rotor must rotate freely.
L
34
6. Bolt bridges to the motor terminals. Remove additional PEN conductor.
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Commissioning and operation6
6.1.2 Microswitch − release check
Danger!
The brake must be free of residual torque. The motor must not rotate.
Danger!
Live connections must not be touched.
1. The switching contact for the brake must be open.
2. Remove two bridges from the motor terminals to deenergise the motor.
– Do not switch off the DC brake supply.
– When connecting the rectifier to the neutral point of the motor, the PE conductor
must also be connected to this point.
3. Apply DC voltage to the brake.
4. Measure the AC voltage at the motor terminals. It must be zero.
5. Close the switching contact for the brake.
– The brake is released.
6. Measure the DC voltage at the brake:
– Compare the DC voltage measured with the voltage specified on the nameplate. A
±10 % deviation is permissible.
7. Check air gap "s
– It must be zero and the rotor must rotate freely.
.
L"
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Commissioning and operation6
6.1.3 Microswitch − wear check
Danger!
The brake must be free of residual torque. The motor must not rotate.
Danger!
Live connections must not be touched.
1. Remove two bridges from the motor terminals. Do not switch off the DC voltage for
the brake. When connecting the rectifier to the neutral point of the motor, the PE
conductor must also be connected to this point.
"
2. Set air gap to "s
. Description 23 worksteps 8−11.
Lmax.
3. Connect the mains supply.
4. Measure the AC voltage at the motor terminals and the DC voltage at the brake. Both
must be zero.
5. Switch off the current.
6. Set air gap to "s
7. Connect the mains supply.
8. Measure the AC voltage at the motor terminals. It must be the same as the mains
voltage.
9. Measure the DC voltage at the brake.
– The DC voltage measured after the overexcitation time (see bridge/half−wave
rectifier) must be half the voltage indicated on the nameplate. A 10 % deviation is
permissible.
10. Check air gap "s
11. Switch off the current for the brake.
12. Bolt bridges to the motor terminals. Remove additional PEN conductor.
". Description 23 worksteps 8−11.
LN
". It must be zero and the rotor must rotate freely.
L
36
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Commissioning and operation6
6.1.4 Manual release
Stop!
This operational test is to be carried out additionally!
Danger!
The brake must be free of residual torque. The motor must not rotate.
1. Pull the lever (Fig. 18) with approx. 250 N until the resistance increases strongly.
Stop!
Additional tools to facilitate brake release are not allowed! (e.g. extension piece)
2. The rotor must rotate freely. Small residual torques are permissible.
3. Release the lever.
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Commissioning and operation6
6.2 Reducing the brake torque
M−
M+
BFK46825−010−a.iso BFK46820−012.iso
Fig. 18 Braking torque adjustment
1 Stator
31 Torque adjustment ring
1. Turn the adjuster nut (8) counterclockwise using the hook wrench.
– Observe the notches. Positions between notches are impermissible. (Values for the
brake torque reduction see chapter 3.2.1).
– The maximum permissible projection "h
is to be observed (values for "h
" see chapter 3.3).
Emax.
" of the adjuster nut (8) to the stator (7)
Emax.
Danger!
The reduction of the brake torque does not increase the maximum permissible
air gap "s
Do not change the manual release setting for models with manual release.
Lmax.
".
38
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Commissioning and operation6
6.3 During operation
| Check the brake regularly during operation. Take special care of:
– unusual noises or temperatures
– loose fixing elements
– the condition of the electrical cables.
| The armature plate must be attracted and the drive must move without residual
torque.
| Measure the DC voltage at the brake.
– Compare the DC voltage measured with the voltage specified on the nameplate. A
±10 % deviation is permissible.
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Maintenance/repair7
7 Maintenance/repair
7.1 Wear of spring−applied brakes
The following table describes the different causes of wear and their effects on the components
of the spring−applied brake. The important influencing factors must be quantified so that the
service life of the rotor and brake can be calculated and that the maintenance intervals to be
prescribed can be specified precisely. The most important factors in this context are the
applied friction energy, the initial speed of braking and the operating frequency. If several of
the causes of friction lining wear occur in an application at the same time, the influencing
factors are to be added together when the amount of wear is calculated.
Component Cause Effect Influencing factors
Friction lining Braking during operation
Emergency stops
Overlapping wear during start and
stop of drive
Active braking via the drive motor
with support of brake (quick stop)
Starting wear in case of motor
mounting position with vertical
shaft, even when the brake is not
applied
Armature plate and
counter friction face
Brake support Load alternation and jerks in the
Springs Axial load cycle and shear stress of
Rubbing of brake lining Run−in of armature plate and
backlash between armature plate,
sleeve bolts and guide bolt
springs through radial backlash on
reversal of armature plate
Wear of friction lining
counter friction face
Breaking of armature plate, sleeve
bolts and guide bolt
Reduced spring force or fatigue
failure
Friction work
Number of start/stop cycles
Friction work
Number of start/stop cycles,
braking torque
Number of switching operations of
brake
Tab. 8 Causes for wear
40
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Maintenance/repair7
7.2 Inspections
7.2.1 Important notes
To ensure safe and trouble−free operation, spring−applied brakes must be checked and
maintained at regular intervals. Servicing can be made easier if good accessibility of the
brakes is provided in the plant. This must be considered when installing the drives in the plant.
Primarily, the necessary maintenance intervals for industrial brakes result from the load during
operation. When calculating the maintenance interval, all causes for wear must be taken into
account, ( 40). For brakes with low loads such as holding brakes with emergency stop, we
recommend a regular inspection at a fixed time interval. To reduce the cost, the inspection
can be carried out along with other regular maintenance work in the plant if necessary.
If the brakes are not maintained, failures, production losses or damage to the system may
occur. Therefore, a maintenance concept adapted to the particular operating conditions and
brake loads must be defined for every application. For the spring−applied brakes, the
maintenance intervals and maintenance operations listed in the below table must be provided.
The maintenance operations must be carried out as described in the detailed descriptions.
Danger!
The live connections and the rotating rotor must not be touched.
The drive must not be running when checking the brake.
7.2.2 Checking the rotor thickness
1. Remove the motor cover and seal ring, if mounted.
2. Measure the rotor thickness using a caliper gauge.
3. Compare the measured rotor thickness with the minimally permissible rotor thickness,
( 16).
4. If required, replace rotor completely, ( 43).
7.2.3 Checking the air gap
Danger!
Disconnect the drive from the load to prevent accidents. During the next
inspection steps of the spring−applied brake, the motor must not
run!
1. Check the air gap "s
using a feeler gauge ( 16).
2. Compare air gap measured to maximally permissible air gap "s
3. If required, set air gap to "s
" near the fixing screws between the armature plate and stator
L
" ( 42).
LN
L max.
" ( 16).
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Maintenance/repair7
7.2.4 Release / voltage
Danger!
The running rotor must not be touched.
Danger!
Live connections must not be touched.
7.3 Maintenance operations
7.3.1 Adjusting the air gap
Danger!
The brake must be free of residual torque.
Stop!
Please observe when mounting the flange with additional screws:
Behind the threaded holes for the screws in the flange there must be clearing
holes in the endshield. Without clearing holes the minimum rotor thickness
cannot be used. Under no circumstances may the screws be pressed against
the endshield.
1. Unbolt screws (Fig. 10).
2. Screw the threaded sleeves into the stator by using a spanner.
the air gap by approx. 0.15 mm.
3. Tighten screws, torques 16.
4. Check air gap "s
5. If the difference between the measured air gap and "s
readjustment.
" near the screws using a feeler gauge, "sLN" 16.
L
" is too large, repeat the
LN
1
/6 revolution reduces
42
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Maintenance/repair7
7.3.2 Rotor replacement
Danger!
The brake must be free of residual torque.
1. Switch off voltage!
2. Disconnect the supply cable.
3. Loosen the screws evenly and remove them completely.
4. Remove the complete stator from the end shield. Observe the supply cable.
5. Pull the complete rotor off the hub.
6. Check hub teeth.
7. Replace the hub as well if worn.
8. Check the friction surface at the end shield. In case of strong scoring at the flange,
replace the flange. If scoring occurs at the end shield, re−finish end shield.
9. Measure rotor thickness (new rotor) and sleeve bolt head with a caliper gauge.
10. Calculate the gap between the stator and the armature plate as follows:
Gap = rotor thickness + s
" 16)
("s
LN
11. Unscrew the sleeve bolts evenly until the calculated gap between stator and armature
plate is reached.
12. Install and adjust new rotor and stator, 23.
13. Reconnect the supply cable.
− head height
LN
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Maintenance/repair7
7.4 Spare−parts list
| Only parts with item numbers are available.
– The item numbers are only valid for the standard design.
| Please include the following information with the order:
– Order number of the brake
– Position number of the spare part
7.4.1 Brakes BFK468−18 to 31
Fig. 19 BFK468−18 spring−applied brake to 31
Pos. Name Variant
Complete stator, module E
1
Complete stator, module N
Complete rotor
3
Complete rotor, noise−reduced
4 Hub Bore
Flange
6
Hartchromed flange
Set of fastening screws
10
Cheese head screw DIN 912 10.9
12 Manual release
13 Cover ring
Voltage / braking torque
for mounting to the motor
for flange with through hole
BFK45825−011.iso/dms
44
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Maintenance/repair7
7.5 Spare parts order
INTORQ BFK468−LLL / complete stator
Size 18 20 25 31
Design:
Voltage
Brake torque
Cable length
Manual release mounted (not available for size 31)
Armature plate Standard Hardchromed
Microswitch
Switching noises Low−noise
E (with adjuster nut, sizes 18, 20,25)
N (without adjuster nut)
205 V / 103 V (not available for size 31)
360 V / 180 V
___________ Nm (see torque ranges)
Standard
___________mm (from 100 mm to 1000 mm in 100 mm steps,
from 1000 mm to 2500 mm in 250 mm steps)
Monitoring of the operation
Wear monitoring
Accessories
Rotor Aluminium Noise−reduced (rotor with sleeve)
Hub _________ mm (for hole diameter see dimensions)
Flange
Fixing screw set For mounting to the motor
For mounting to the flange with through holes
Sealing Cover ring
Shaft seal (shaft diameter on request)
Cap
Brake cover 18 20 25
Electrical accessories
Rectifier type AC voltage Coil voltage
[V AC] [V DC]
BEG−561−255−030
BEG−561−255−130 BFK468−25
BEG−561−440−030−1
BEG−561−440−130
230
400
±10%
±10%
release/holding
205 / 103
360 / 180
Assigned brake
BFK468−18
BFK468−20
BFK468−18
BFK468−20
BFK468−25
BFK468−31
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Troubleshooting and fault elimination8
8 Troubleshooting and fault elimination
If any malfunctions should occur during operation, please check the possible causes using the
following table. If the fault cannot be eliminated by one of the listed measures, please contact
the aftersales service.
Fault Cause Remedy
Brake does not release
Rotor cannot rotate freely
Coil interruption | Measure coil resistance using multimeter:
– If resistance is too high, replace the complete
Coil has interturn fault or short circuit to
ground
Wiring incorrect or defective | Check and correct wiring.
Rectifier defective or wrong | Measure rectifier DC voltage using a multimeter.
Incorrect microswitch wiring Check microswitch wiring and correct it.
Incorrect microswitch setting Replace the complete stator and complain about the
Air gap too big Adjust air gap ( 42)
Wrong setting of manual release Check dimension "s+sL" with energised brake. The
Air gap "sL" too small Check air gap "sL" and, if required, readjust it (
| Measure coil resistance using multimeter:
– Compare measured resistance to rated
| Check coil for short circuit to ground using a
multimeter:
– Replace the complete stator if short circuit to
| Check brake voltage (see "defective rectifier,
voltage too low").
| Check cable continuity using a multimeter:
– Replace defective cable.
If DC voltage is zero:
| Check AC rectifier voltage.
If AC voltage is zero:
– Apply voltage,
– check fuse,
– check wiring
If AC voltage is ok:
– Check rectifier
– replace defective rectifier
| Check coil for fault between turns and short
circuit to ground.
| If the rectifier defect occurs again, replace the
complete stator, even if no fault between turns or
short circuit to ground can be detected. The fault
may only occur when warm.
incorrect microswitch setting to the manufacturer.
Measure rotor thickness and compare with minimum
rotor thickness ( 16). If necessary, replace rotor.
dimension must be identical on both sides. Correct if
necessary.
42).
stator.
resistance. For values, see 16. If the
resistance is too low, replace the complete
stator.
ground is detected.
46
i
j | BA 14.0190 | 11/2012
Troubleshooting and fault elimination8
RemedyCauseFault
Rotor not thick enough Rotor has not been replaced in time Replace rotor ( 43)
Voltage is not zero during functional
test (chapter 6.1)
Voltage too high Brake voltage does not match the
Voltage too low Brake voltage does not match the
AC voltage is not mains voltage
Incorrect wiring of microswitch Check and correct the microswitch wiring.
Defective microswitch or incorrect
setting
rectifier
rectifier
Fuse missing or defective Select a connection with proper fusing.
Incorrect wiring of microswitch Check the microswitch wiring and correct it.
Defective microswitch or incorrect
setting
Replace the entire stator and send the defective
stator to the manufacturer.
Adapt rectifier and brake voltage to each other.
Adapt rectifier and brake voltage to each other.
Replace the entire stator and send the defective
stator to the manufacturer.
47
F INTORQ GmbH & Co KG
Germany
Postfach 1103
D−31849 Aerzen
Wülmser Weg 5
D−31855 Aerzen
( +49515470534−444
Ê +49515470534−200
info@intorq.com
INTORQ (SHANGHAI) Co., Ltd
F
China
No. 600, Xin Yuan Road
Building No. 6 / Zone B
Nan Hui District, Lingang
Shanghai, China 201306
60061B
201306
( +86 21 20363−810
Ê +86 21 20363−805
info@cn.intorq.com
INTORQ US Inc.
F
USA
300 Lake Ridge Drive SE
Smyrna, GA 30082
( +1 678 309−1155
Ê +1 678 309−1157
info@us.intorq.com
33002357 | BA 14.0190 | EN | 2.0 | ©11.2012 | TD09 | 10 9 8 7 6 5 4 3 2 1
www.intorq.com
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