Nord Drivesystems 275 299 004, Руководство пользователя, Страница: 8 / 9

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 Informationen/Bremswiderstände/Parameter & Fehlermeldungen @ 13\mod_1472734349965_388.docx @ 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 I 2 t 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 I
2
t overcurrent limit Brake chopper: I
2
t 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 Informationen/Bremswiderstände/Unterbau- Bremswiderstände [SK 5xxP]/BRU5/Anschlussbild Unterbau- Bremswiderstand [SK BRU5-1-...] @ 33\mod_1555317562556_388.docx @ 2527580 @ 5 @ 1