Nord Drivesystems SK BRU5-1-240-050 User manual

Getriebebau NORD GmbH & Co. KG
Getriebebau-Nord-Straße 1 • 22941 Bargteheide, Germany • www.nord.com
Technical Information / Datasheet
SK BRU5-1-240-050
Brake resistor 275299004 1.0 0821 en
Pos: 1 /Technische Inf ormationen/Bremswider stände/Unterbau- Br emswiderstände [SK 5xxP]/ BRU5/Produkt [SK BR U5-1-240-050] @ 33\mod_1554793508507_388. docx @ 2526320 @ @ 1
o
SK BRU5-1-240-050 Part number: 275 299 004
Footprint braking resistor for connection
to a NORDAC PRO SK 500P
Pos: 6 /Allgemein/Hin weise (Gefahr, W arnung, Vorsicht und Allgemei n)/Hinweis Inbetri ebnahme durch Elektrof achkraft @ 13\mod_147254 5292234_388.doc x @ 344669 @ @ 1
It only is allowed for qualified electricians to install and commission the module. An electrician is a person
who, because of their technical training and experience, has sufficient knowledge relating to
• switching on, switching off, isolating, earthing and marking power circuits and devices,
• proper maintenance and use of protective devices in accordance with defined safety standards.
Pos: 7 /Allgemein/Hin weise (Gefahr, W arnung, Vorsicht und Allgemei n)/Gefahr/Gefahr eines elektrisc hen Schlags @ 13\mod_1472544803791_3 88.docx @ 344601 @ @ 1
DANGER!
Danger of electric shock
The frequency inverter continues to carry hazardous voltages for up to 5 minutes after it was switched
off.
• Work must not be carried out unless the device has been disconnected from the voltage and at
least 5 minutes have elapsed since the mains was switched off!
Pos: 8 /Allgemein/Hin weise (Gefahr, W arnung, Vorsicht und Allgemei n)/Vorsicht/Ver brennungsgefahr @ 13\mod_147 2546485907_388.do cx @ 344740@ @ 1
CAUTION
Danger of burns
The module and all other metal components can heat up to temperatures above 70 °C.
• Sufficient cooling time must be allowed for when working on the components in order to avoid injuries
(local burns) to parts of the body coming into contact with the components.
• In order to avoid damage to neighbouring objects, sufficient clearance must be maintained during
installation.
Pos: 9 /Allgemein/Hin weise (Gefahr, W arnung, Vorsicht und Allgemei n)/Achtung/Gültig keit des Dokuments @ 13\mod_147 2545201279_388. docx@ 344 635 @ @ 1
NOTICE
Validity of this document
This document is only valid in combination with the operating instructions for the relevant frequency
inverter. Safe commissioning of this module and the frequency inverter depends on the availability of
this information.
Pos: 10 /Technische Inf ormationen/Bremswid erstände/Unterbau- Br emswiderstände [ SK 5xxP]/BRU5/Basisinf ormation I-Teil [SK BRU5-1-...] @ 33\mod_1554798372247_ 388.docx @ 2526572 @ 55 @ 1

Brake resistor – SK BRU5-1-240-050
2 / 9 275299004 - 0821
o
Scope of delivery
Module
1 x Bottom-mounted
braking resistor SK BRU5-1-…
2 x Fastening screws M4 x 12 (in the accessories kit)
Field of use
Dynamic braking (frequency lowering) of a three-phase motor via a frequency inverter results in
generator braking energy that – depending on the particular application – is dissipated by a braking
resistor. This excess energy is converted into heat.
The footprint braking resistor is intended for use with the NORDAC PRO SK 500P device series.
Similar to illustration
Pos: 13 /Technische Inf ormationen/Bremswid erstände/Unterbau- Br emswiderstände [ SK 5xxP]/BRU5/Technisc he Daten [SK BRU5-1-240-050] @ 33\mod_1555332 767200_388.docx @ 25279 99 @ 5 @

Brake resistor – SK BRU5-1-240-050
275299004 - 0821 3 / 9
1
o
Technical Data
Electrical data
Number of wires
2
Short-time power P
max
2)
Resistance
Ω
240
for 1.2 s
kW
0.75
Max. continuous power
Pn
W
50
Rated power P
W
≤80
Max. pulse energy
capacity 1)
kJ
3.2
1) The stated value applies to a single use < 1 s at an ambient temperature of 40°C.
2) The stated value applies to a single use within 120 s.
Pos: 18 /Technische Inf ormationen/Bremswid erstände/Unterbau- Br emswiderstände [ SK 5xxP]/BRU5/Basisinf ormation II-Teil [SK BRU5-1-...] @ 33\mod_15553957 02126_388.docx @ 2528350 @ @ 1
o
General
Temperature range
°C
-10 … 40
(100% ED/S1)
-10 … 50 (70% ED/S3)
Approvals
CE, RoHS, UL recognition
Protection class
IP65
Tightening torque
Mounting
Screws
Nm
1.1 – 1.5
Screws
2 x M4 x 12
(SK 5xxP)
Weight
kg
≈0.31
Screws 1)
2 x M5 x 8
(mounting surface)
1) Not included in the scope of delivery
Dimensions
Overall dimensions
(W x H x D)
mm
65 x 35 x 235
Dimensioning drawing

Brake resistor – SK BRU5-1-240-050
4 / 9 275299004 - 0821
Connections
Designation B+ B-
Cross section / type
AWG 18
Wire colour
White
Pos: 21 /Technische Inf ormationen/Bremswid erstände/Unterbau- Br emswiderstände [ SK 5xxP]/BRU5/Information b zgl. Zuordnung e xterner Unterbau-Bremswid erstand @ 33\mod_155896563 0945_388.docx @ 2536550 @ 5 @ 1
Assignment to frequency inverters
Information
Overview in the manual
The footprint braking resistors provided by the NORD DRIVESYSTEMS Group are directly tailored to
the individual frequency inverters.
For detailed information, please refer to the frequency inverter manual "Further documentation and
software www.nord.com", chapter braking resistor (BR).
Pos: 22 /Technische Inf ormationen/Bremswid erstände/Unterbau- Br emswiderstände [SK 5xxP] /BRU5/Wartungshi nweis [SK BRU5-...] @ 67\mod_1613982 726433_388.docx @ 2741370 @ 5 @ 1
Maintenance information
In order to ensure the dissipation of heat energy from the resistor body and the connecting cables, these
must be free from dirt during operation.
Due to temperature development on the resistor’s surface, deposits of flammable material must be
avoided in order to avoid ignition.
Cleaning of the resistor must be carried out with a dry duster on a regular basis when the resistor has
completely cooled down. The use of detergents for cleaning the resistor is generally not permitted.
For detailed information, please refer to the Maintenance and service information chapter in the BU 0600
manual, see "Further documentation and software www.nord.com".
Pos: 23 /Technische Inf ormationen/Bremswid erstände/Termpera turschalter/Vor sicht Überlastung Br emswiderstand @ 62\mod_161 0977485033_388.doc x@ 2715 184 @ @ 1
CAUTION
Overload
In case of overload, the braking resistor would be subject to significantly increased heat. Depending on
the overload degree, this may lead to overheating which permanently damages or even destroys the
braking resistor. As this can be accompanied by risk of fire for components in the vicinity of the resistor,
such overloads must be detected and avoided at an early stage.
• Use optional temperature switch
• Monitoring via parameter settings
Pos: 24 /Technische Inf ormationen/Bremswid erstände/Termpera turschalter/ Temperaturschalter [2759 11100 / 275911200] @ 62\mod_161 0957959839_388.doc x @ 2715030 @ 5 @ 1

Brake resistor – SK BRU5-1-240-050
275299004 - 0821 5 / 9
Temperature monitoring
For connection to the frequency inverter, a temperature switch (bi-metal) is optionally available in two
versions for temperature monitoring of the footprint braking resistor. The trigger characteristic selection
depends on the installation position / mounting of the braking resistor.
Installation in the vicinity of the frequency inverter Direct installation below the frequency inverter
Nominal temperature of 180°C
Part No. 275991100
Nominal temperature of 100°C
Part No. 275991200
Information
The enclosed temperature switch fastening material is not required for mounting at the
SK 5xxP frequency inverter.
Pos: 25 /Technische Inf ormationen/Bremswid erstände/Termpera turschalter/ Hinweis - Erwärmung Unterbau mit 100°C [275911200] @ 62\mod_1610615070 087_388.docx @ 2714390 @ @ 1
NOTICE
Impermissible heating
If the footprint braking resistor is mounted directly below the frequency inverter, a temperature switch
with a nominal switch-off temperature of 100°C (Part No. 275991200) must be used. This is necessary
to prevent impermissible heating of the frequency inverter.
• Failure to observe this may result in damage to the cooling system of the frequency inverter (fan).
Pos: 26 /Technische Inf ormationen/Bremswid erstände/Termpera turschalter/ Technische Daten [27591110 0 / 275911200] @ 62\mod_1610 977768517_388.d ocx @ 2715221 @ 5 @ 1
Technical Data
General
Switching temperature
°C
100 ± 5
180 ± 5
Approvals
CE, RoHS, UL
Protection class
IP40
Tightening torque
Mounting
Bimetallic switch
Nm
1.8 – 2.0
Threads
M4
Weight
kg
≈0.05
Wrench size
10
Electrical data
Number of wires
2
Switching cycles
10000
Voltage
V
250 AC
24 DC
Current
AC
A
2.5 1) / 1.6 2)
DC
A
2.0
1) Stated value is cos φ= 1.
2) Stated value is cos φ= 0.6.

Brake resistor – SK BRU5-1-240-050
6 / 9 275299004 - 0821
Dimensions
Overall dimensions
(W x H x D)
mm
11 x 12 x 10
Mounting (L)
M4 thread
mm
5
Cable / line
Wire length
mm
50
Wire end sleeve
mm
10
Dimension drawing
Pos: 27 /Technische Inf ormationen/Bremswid erstände/Unterbau- Br emswiderstände [ SK 5xxP]/BRU5/Allgemein Montage Unterbau-Brem swiderstand [SK BRU5-1-...] @62\mod_161106258089 8_388.docx @ 2715588 @ 5 @ 1
-

Brake resistor – SK BRU5-1-240-050
275299004 - 0821 7 / 9
Installation
Installation location
Direct mounting or in the vicinity of the centralised NORDAC PRO frequency inverter.
• Below the frequency inverter
• In the vicinity of the SK 5xxP within the control cabinet
Mounting position
Lying flat on vertical mounting surfaces.
Mounting
With screw fasteners
• Screws for mounting are partially included in the scope of delivery
Installation steps
1.
Direct installation below the frequency inverter
Correctly mount the frequency inverter with the 2 provided
fastening screws (M4 x 12) on the braking resistor.
• ➀For frequency inverter on ➁braking resistor
• ➂Braking resistor on mounting surface
Installation in the vicinity of the frequency inverter
Correctly mount the braking resistor on the wall or the mounting
surface close to the frequency inverter in a horizontal position
with the 2 fastening screws which are provided.
• ➀For frequency inverter on mounting surface
• ➂Braking resistor on mounting surface
Similar to illustration
2.
Installation of optional temperature monitoring
➃Install temperature switch (Part No. 275991100 or 275991200)
on the braking resistor.
• Vertical mounting primarily on the inside of the
aluminium profile
• Screw thread into the mounting hole
• Fasten (M6) with open-ended spanner (SW10)
3.
Connection to the frequency inverter
Connect the braking resistor wires on the underside of the
frequency inverter to the terminal block X3.
Wire 1
B-
Wire 2
B+
Comply with specified tightening torques (see

Technical Data
– General).
Connect the optional temperature switch wires on the front side
of the frequency inverter to the terminal block X11.
Wire 1
Digital input
Wire 2
Voltage supply
Pos: 30 /Technische Inf ormationen/Bremswid erstände/Termpera turschalter/I nformation Anschluss Temperaturschal ter [SK BRU5-...] @ 62\mod_1610977250366_3 88.docx @ 2715147 @ @ 1

Brake resistor – SK BRU5-1-240-050
8 / 9 275299004 - 0821
Information
In order to use the signal from the temperature switch it must be connected to a free digital input of the
frequency inverter and, for example, parameterised with the function "Voltage block" or "Quick stop".
Switching power of the normally closed contact:
• 2 A at 24 V DC
• 2 A / 230 V AC
For detailed information, please refer to the frequency inverter manual "Further documentation and
software www.nord.com".
Pos: 31 /Technische Inf ormationen/Bremswid erstände/Parame ter & Fehlermeldungen @ 13\mod_14 72734349965_388.doc x @ 345591 @ 55 @ 1
Parameter
For optimum operation of the braking resistor, the following frequency inverter parameters need to be
changed.
Parameter Meaning Remarks
P556 Braking resistor
Value of the braking resistor for calculation of the maximum brake power in order to protect the
resistor.
• Error I2t limit (E003.1) is triggered. For further details, see in P737.
P557 Brake resistor type
Continuous power (nominal power) of the resistor, to display the actual utilisation in P737. For a
correctly calculated value, the correct value must be entered into P556 and P557.
• 0.00 = Off, monitoring disabled
P700 Actual operating status This parameter holds information on the actual operating status of the frequency inverter, such as
fault, maintenance, and reason for switch-on inhibit.
P701 Last fault This parameter holds information on the frequency inverter’s last faults.
P737 Usage rate brakeres.
This parameter holds information on the actual usage degree of the brake chopper or the actual
utilisation of the braking resistor in generator mode.
• Depending on parameter settings P556 and P557.
• If both are correctly set, the resistance is displayed.
Refer to the frequency inverter manual for details "Further documentation and software
www.nord.com".
Error messages
Error messages from the braking resistor - the current or archived message for the last fault - can be
read out from the information parameter Current Fault P700 and the Last Fault P701 in the error memory
of the frequency inverter.
Error
(E030/E050)
Meaning Remarks
3.1
I2t overcurrent limit
Brake chopper: I2t limit has been triggered, 1.5x value for 60 s reached (

P556, P557)
• Avoid overcurrent in braking resistor
5.0 Overvoltage Ud
Link circuit voltage too high
• Check the function of the braking resistor (cable break)
• Resistance of connected braking resistor too high
Refer to the frequency inverter manual for details "Further documentation and software
www.nord.com".
Pos: 32 /Technische Inf ormationen/Bremswid erstände/Unterbau- Br emswiderstände [ SK 5xxP]/BRU5/Anschlussbi ld Unterbau- Bremswide rstand [SK BRU5-1-...] @ 33\mod_1555317562556 _388.docx @ 2527580 @ 5 @ 1

Brake resistor – SK BRU5-1-240-050
275299004 - 0821 9 / 9
Connection diagram
Footprint braking resistor
SK BRU5-1-xxx-xxx
SK 5xxP Size 1
Frequency inverter bottom side
Frequency inverter with
footprint braking resistor
Pos: 35 /Technische Inf ormationen/Br emswiderstände/ Unterbau- Bremswiderst ände [SK 5xxP]/BRU5/W eiterführende Dokumen tationen und Software [ SK BRU5-...] @ 33\mod_1554822291112_388.doc x @ 2526801 @ 5 @ 1
Further documentation and software www.nord.com
Document Designation Document Designation
BU 0600
Frequency inverter manual SK 500P – SK 550P
F3060_E3000
Flyer NORDAC PRO SK 500P
=== Ende der Liste für Textmarke Inhalt ===