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Summary of Contents for SEW MOVITRAC 31
- Page 1 ® MOVITRAC 31.. Frequency Inverters Manual FRS 31 Synchronous Operation Control Edition 10/98 08/198/96...
- Page 2 MOVITRAC 31 Operating Instructions. Each unit is manufactured and tested to current SEW-EURODRIVE technical standards and specifi- cations. The manufacturer reserves the right to make changes to the technical data and designs, which are in the interest of technical progress.
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Page 3: Table Of Contents
Contents Page Introduction ..................4 1.1 Description ......................4 1.2 Application Examples.....................6 Wiring Diagram ................. 7 Commissioning.................. 8 3.1 Before you start .....................8 3.2 Wiring information....................8 3.3 Wiring example......................9 Parameters ..................10 4.1 Relationship between parameter values and output speed ........10 4.2 Signal functions ....................10 4.3 Explanation of the parameters ................12 Fault Messages ................ -
Page 4: Introduction
Introduction Introduction Description The synchronous operation function enables a group of asynchronous motors (master and slaves) to maintain angular synchronism to one another or at a specified proportional ratio. The synchronous operation function has 8 modes to cover a range of applications: Modes Functions Application Examples... - Page 5 Introduction The principle behind synchronous operation is the continuous comparison of the angular position between the slave motor and the master. For this purpose, the master and slave motors should be ® fitted with encoders (pulse encoders) that output the same number of pulses. A MOVITRAC 31..
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Page 6: Application Examples
Introduction Application Examples MC 31.. + MC 31.. + MC 31.. + MC 31.. + FEN 31 / FPI 31 FRS 31 FRS 31 FRS 31 Master Slave 1 Slave 2 Slave 3 Figure 1: Group configuration: Master and several equal-priority slaves. Up to 10 slaves (max.) connected to one master (e.g. -
Page 7: Wiring Diagram
Wiring Diagram Wiring Diagram X21: X20: FEN 31 Speed Detection FES 31 Synchronous Operation * factory setting X18: X16: X17: Screen Channel C/ only required Encoder 5V TTL for output via TL. 85/86 00587AEN Fig. 2: FEN 31 and FES 31 wiring diagram FEN 31 Speed Detection Operation 81 Output: channel A Setpoint pulses for slave... -
Page 8: Commissioning
Commissioning Commissioning Before you start Master and slave drives must first be commissioned as stand-alone drives in V/f mode, then for speed control and then, as third step, for synchronous operation: ® Commissioning for V/f mode of each master and slave drive (see MOVITRAC 31.. -
Page 9: Wiring Example
Commissioning • If master and slave drives are to have the same direction of rotation: CW rotation of master = CW rotation of slave then the connection sequence of the motor phases and the units channels must be identical. • If master and slave are to have opposite directions of rotation (e.g. output shafts of geared motors with an even number of gear stages are opposite one another): CW rotation of master = CCW rotation of slave –... -
Page 10: Parameters
Parameters Parameters Relationship between parameter values and output speed In the case of the adjustable parameters (P 550, P 551, P 554, P 555, P 765, P 766/767/768), counter values relating to an angular offset (e.g. as permitted deviation or as offset) between mas- ter and slave drive are to be entered. - Page 11 Parameters ® The MOVITRAC 31.. with the FRS 31 option has the following additional synchronous operation parameters. The synchronous operation parameters need only be entered on the slave; the mas- ter operates in V/f mode or as under speed control. ®...
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Page 12: Explanation Of The Parameters
Parameters Explanation of the parameters to set up the slave P 55 Synchronous operation indications (with FRS 31 option package only) Note on P 550, P 551 and P 554: The numerical values for positional tolerance (P 554), alert signal (P 550) and lag error (P 551) must be entered in ascending order of significance, i.e.: Position tolerance ≤... - Page 13 Parameters P 554 Positional tolerance of slave Value range = 10...25...32,768 Various requirements must be satisfied to ensure accurate positioning of the slave. The brake on the slave drive is applied when all the following conditions are satisfied: • setpoint stop function P 180 = “Yes” activated •...
- Page 14 Parameters • The terminal to which “FRS slave start” is assigned controls the synchronous start-up of master and slave if: – the inputs from the master’s binary outputs with the function “rotating field on” receive a signal and – the setpoint/stop function (P 180) at master and slave become active. •...
- Page 15 The following factors for master and slave drives must be taken into account during the calcula- tion: • exact gear ratios. To just two decimal places in the SEW catalog. • input transmission ratios • pulley diameter (including twice the belt thickness)
- Page 16 Parameters P 764 Selection of mode Value range 1...8 The selected mode determines how the slave reacts to a free-running signal. “0” signal on terminal 102 or terminals 103-105, i.e. constant corrective control of synchronous operation means counter value ∆α = 0, i.e. no angular offset between master and slave. In free-running mode (terminal 102 = “1”), the external setpoint n2 (terminals 34/35) or the inter- nal setpoints n11/12/13 will be activ.
- Page 17 Parameters P 765 Slave counter (differential value) Value range = –99,999,999...10...99,999,999 The slave counter is entered with a sign. It is an adjustable angular offset that, depending on the mode, is interpreted as either a limit for free-running operation or specifies a constant angular offset for the slave, i.e.
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Page 18: Fault Messages
– encoder with < 512 pulses/revolution – speed control mode on master FRS PARAMETER DATA FAULT disabled FRS RAM FAULT Immediate Internal fault. Contact SEW Service Dept. if fault persists switch-off FRS PROCESS DATA Immediate Fault on interface between inverter and FES 31 option pcb:... -
Page 19: Technical Data
Service life of RAM battery Type Standard CR 2430 (25 × 3 mm) batteries, available from usual stockists; spare batteries not available from SEW. More than 10 years; dispose of used batteries legally. W × H × D Dimensions 80 × 160 × 20 mm MOVITRAC ®...
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