SEW-MOVITRAC-31C Manual

Oct 24, 2026

Operating instructions for the SEW-MOVITRAC 31C frequency inverters, Edition 07/2000, providing safety notes and application restrictions for industrial and commercial drive systems. The manual specifies authorized use with three-phase AC squirrel-cage asynchronous motors and defines installation site requirements, prohibited environments, and conditions for commissioning. It also outlines disposal guidance, references related catalogs and user manuals, and presents a structured contents overview covering safety, installation details, wiring, interfaces, option card wiring, and startup procedures.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages65

Reading Time2 h 44 min

AccessFree to download

Safety Notes

Installation

Type designation, nameplate and option label

MOVITRAC 31C, Size 0

MOVITRAC 31C, Sizes 1 and 2

MOVITRAC 31C, Sizes 3 and 4

Installation instructions

Installation for electromagnetic compatibility

UL-compliant installation

Wiring diagram for the basic unit

Assignment of braking resistors, chokes and filters

MOVITRAC 31C, size 0 with braking resistor

Connecting the RS-232 serial interface (USS21A options)

Connecting the RS-485 serial interface (USS21A option)

Installation of option cards

Wiring diagram and terminal description for the FEA31C option

Wiring diagram and terminal description for the FIO31C Option

Wiring diagram and terminal description for the FEN31C/FPI31C option

Wiring diagram and terminal description for the FIT31C option

Connecting the incremental encoder

Startup

Preliminary work and aids

Short-cut startup with the FBG31C keypad

Starting the motor

Startup examples

Complete parameter list

T MOVITRAC® 31C Frequency Inverters Operating Instructions Edition 07/2000 08/198/96 0 0 0 2 0 1 / 9 1 0 9 2 2 9 0 C General Notes Always follow the warning and safety notes contained in this user manual! Safety notes are: Electrical hazard, e.g. when working on live equipment. Mechanical hazard, e.g. when working on hoists. Important instructions for safe and fault-free operation. A requirement for fault-free operation and fulfillment of any rights to claim under guarantee is that these instructions and remarks are followed. Therefore read these instructions carefully before you start working with the unit! These operating instructions contain important information for servicing. They should therefore be kept in the vicinity of the unit. Application Restrictions The MOVITRAC®31C units are frequency inverters for industrial and commercial drive systems for operation of three-phase AC squirrel-cage asynchronous motors. Other loads must not be operated with the inverters. The installation site must be free of dust, dry (without danger of moisture condensation) and lockable (e.g. switch cabinet) . All specifications concerning technical data and permissible conditions at the equipment location must be observed. Where applicable, commissioning (starting normal operation) is prohibited, unless the machine complies with the EMC guideline 89/336/EWG and the conformity of the finished product with the machine guideline 89/392/EWG is verified (observe EN 60204) . Unless otherwise specifically indicated, the following is prohibited: Implementation in areas subject to explosion hazards Implementation in the vicinity of oils, acids, gas, fumes, dusts, radiation, etc. Implementation in non-stationary applications where mechanical vibration and impact loads occur which exceed the limits stipulated by EN50178 . Implementation in applications where the inverter alone (without a higher-level safety system) is responsible for safety tasks which must guarantee the safety of persons and machinery. Disposal (please observe the applicable waste disposal regulations): Depending on the material they are made of, unit components are to be disposed of in accordance with the applicable waste disposal regulations for: electronics waste (pcbs), plastic material (housing), sheet metal, copper, etc. For further technical information as well as selection notes please refer to the MOVITRAC® 31C Frequency Inverter Catalog, publication no. 0922 9116. For further information about the synchronous operation control option, the IPOS positioning control option and the fieldbus options (PROFIBUS and INTERBUS) please refer to the respective user manuals. 2 MOVITRAC®31C Operating Instructions Phone: 800.894.0412-Fax: [888.723.4773-Web: www.clrwtr.com-Email:](888.723.4773-Web: www.clrwtr.com-Email:) [info@clrwtr.com](info@clrwtr.com) Contents Page 1 Safety Notes .............................................................................................4 2 Installation............................................................................................... 5 2.1 Type designation, nameplate and option label ................................................................. 5 2.2 MOVITRAC® 31C, Size 0 ................................................................................................. 6 2.3 MOVITRAC® 31C, Sizes 1 and 2...................................................................................... 7 2.4 MOVITRAC® 31C, Sizes 3 and 4...................................................................................... 8 2.5 Installation instructions ...................................................................................................9 2.6 Installation for electromagnetic compatibility ................................................................ 10 2.7 UL-compliant installation .............................................

FAQs

What safety notes must be followed when using the MOVITRAC 31C inverter?

The manual requires always following the warning and safety notes. It highlights electrical and mechanical hazards and stresses instructions for safe, fault-free operation.

What types of loads and motor systems are allowed with the MOVITRAC 31C units?

The MOVITRAC 31C units are intended for industrial and commercial drive systems operating three-phase AC squirrel-cage asynchronous motors. Other loads must not be operated with the inverters.

When is commissioning (starting normal operation) prohibited?

Commissioning is prohibited unless the machine complies with the EMC guideline 89/336/EWG and the finished product’s conformity with the machine guideline 89/392/EWG is verified (observe EN 60204).

Oct 24, 2026

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