revision to the operating instructions

Drive Technology \ Drive Automation \ System Integration \ Services

Revision to theOperating Instructions

MOVITRAC® LTP-B/LTX, LTP-A, LTE-B

Edition 03/2015 20133340 / EN

SEW-EURODRIVE—Driving the world

Revision – Information regarding UL 3

Contents

Contents1 Notes .................................................................................................................... 4

2 MOVITRAC® LTP-B/LTX...................................................................................... 52.1 Thermal motor protection............................................................................ 5

3 MOVITRAC® LTP-A ............................................................................................. 63.1 Thermal motor protection............................................................................ 6

4 MOVITRAC® LTE-B ............................................................................................. 74.1 Thermal motor protection............................................................................ 7

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1 otes

1 Notes

INFORMATIONThe information given in this document is added to the chapter "UL compliant installa-tion" of the operating instructions of the following inverters: • MOVITRAC® LTP-B/LTX, order number 21270996 / EN• MOVITRAC® LTP-A, order number 16884817 / EN• MOVITRAC® LTE-B, order number 20265743 / EN

INFORMATIONDue to UL requirements, the following chapters are always printed in English indepen-dent of the language of the revision:

N

Revision – Information regarding UL

2Thermal motor protectionMOVITRAC® LTP-B/LTX

2 MOVITRAC® LTP-B/LTX

2.1 Thermal motor protectionThermal motor overload protection shall be provided by one of the following means:

• NEC compliant installation of a motor temperature sensor, see also section "Motortemperature protection (TF/TH)" in the chapter "Electrical Installation" of the operat-ing instructions.

• Using internal thermal motor overload protection according to NEC (National Electri-cal Code, US). Thermal motor overload protection can be activated via parameterP4-17.

• Implementing external measures to ensure thermal motor overload protectionaccording to NEC (National Electrical Code).

2.1.1 ParameterThe following additional parameter was added to MOVITRAC® LTP-B/LTX inverters toimplement internal thermal motor protection according to NEC:

• P4-17 Thermal motor protection according to NEC

• 0 / disabled

• 1 / enabled

2.1.2 Functional principleThe motor current is accumulated in an internal memory over the course of time. Theinverter goes to fault state as soon as the thermal limit is exceeded (I.t-trP).

Once the output current of the inverter is less than the set rated motor current, the inter-nal memory is decremented depending on the output current.

• When P4-17 is disabled, thermal memory retention is reset upon shutdown or powerloss.

• When P4-17 is enabled, thermal memory retention is maintained upon shutdown orpower loss.

INFORMATIONOnly the fuses mentioned in chapter "UL compliant installation" of the operatinginstructions shall be used for UL compliant installation.

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3 hermal motor protectionOVITRAC® LTP-A

3 MOVITRAC® LTP-A

3.1 Thermal motor protectionMOVITRAC® LTP-A is not provided with internal thermal motor overload protectionaccording to NEC (National Electrical Code, US).

Thermal motor overload protection shall be provided by the following means:

• NEC compliant installation of a motor temperature sensor, see also chapter "Motortemperature protection (TF/TH)" in the operating instructions.



TM


4Thermal motor protectionMOVITRAC® LTE-B

4 MOVITRAC® LTE-B

4.1 Thermal motor protectionThermal motor overload protection shall be provided by one of the following means:

• NEC compliant installation of a motor temperature sensor, see also section "Motortemperature protection (TF/TH)" in the chapter "Electrical Installation" of the operat-ing instructions.

• Using internal thermal motor overload protection according to NEC (National Electri-cal Code, US). Thermal motor overload protection can be activated via parameterP41.

Note: This function is available with firmware 1.1 and later.


4.1.1 ParameterThe following additional parameter was added to MOVITRAC® LTE-B inverters toimplement internal thermal motor protection according to NEC:

• P41 Thermal motor protection according to NEC

• 0 / disabled

• 1 / enabled

4.1.2 Functional principleThe motor current is accumulated in an internal memory over the course of time. Theinverter goes to fault state as soon as the thermal limit is exceeded (I.t-trP).

Once the output current of the inverter is less than the set rated motor current, the inter-nal memory is decremented depending on the output current.

• When P41 is disabled, thermal memory retention is reset upon shutdown or powerloss.

• When P41 is enabled, thermal memory retention is maintained upon shutdown orpower loss.


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SEW-EURODRIVE—Driving the world

SEW-EURODRIVEDriving the world

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SEW-EURODRIVE GmbH & Co KGP.O. Box 3023D-76642 Bruchsal/GermanyPhone +49 7251 75-0Fax +49 7251 [email protected]

revision to the operating instructions

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