Schneider Electric Multi-Loader Especificaciones descargar pdf (Pagina 15)

Specications (continued)

Altivar

variable speed drives

Communication port specications

Protocol Modbus

Structure Connector 1 RJ45 connector

Physical interface 2-wire RS 485

Transmission mode RTU

Transmission speed CongurableviatheHuman/Machineinterface,remotedisplayterminalorSoMove

setup software: 4800 bps, 9600 bps, 19200 bps or 38400 bps

Number of subscribers 31 maximum

Polarization No polarization impedance. This must be provided by the wiring system (for example,

in the master)

Address 1to247,congurableviatheHuman/Machineinterface,remotedisplayterminalor

SoMove setup software

Services Prole BasedonIEC61800-7-301(CiA402prole)

Messaging Read Holding Registers (03) 29 words maximum

Write Single Register (06) 29 words maximum

Write Multiple Registers (16) 27 words maximum

Read/Write Multiple Registers (23) 4/4 words maximum

ReadDeviceIdentication(43)

Communication monitoring Can be inhibited. Time out can be set between 0.1 s and 30 s

Diagnostics Via the Human/Machine interface

or remote display terminal

On display unit

Torque specications (typical curves)

1,7

1,50

1,25

0,95

0,75

0,50

0,25

25/30

50/60

75/90 100/120

T/Tn

Thecurvesoppositedenetheavailablecontinuoustorqueandtransientovertorque

for both self-cooled and force-cooled motors.

The only difference is in the ability of the motor to provide a high continuous torque at

less than half the nominal speed.

Self-cooled motor: continuous useful torque 1 (1)

Force-cooled motor: continuous useful torque2

Transient overtorque for 60 s3

Transient overtorque for 2 s4

Torque in overspeed at constant power 5 (2)

(1) For power ratings y 250 W, de-rating is 20% instead of 50% at very low frequencies.

(2) The nominal motor frequency and the maximum output frequency can be adjusted from

0.5 to 400 Hz. The mechanical overspeed capability of the selected motor must be checked with

the manufacturer.

Special uses

Use with a motor with different power to the drive rating

The device can power any motor which has a lower rating than that for which the drive was designed, provided that the minimum current value

is complied with: Ith = 0.2 x drive In.

For motor ratings slightly higher than that of the drive, check that the current taken does not exceed the continuous output current of the drive.

Connecting motors in parallel

In1

In2

Inx

Motor

choke

Drive In > In1 + In2 + Inx

L = L1 + L2 + Lx

Connecting motors in parallel

Altivar 12

The drive rating must be greater than or equal to the sum of the currents of the

motors to be connected to the drive (In). In this case, it is necessary to provide

external thermal protection for each motor using probes or thermal overload relays.

Use of a motor choke (1) is recommended in the following cases:

When three or more motors are connected in parallel

When the motor cable length (L), including all tap links (L1, L2 to Lx), is longer than

the maximum permitted motor cable length (2)

(1) See References on page 17.

(2) For maximum permitted motor cable length, see page 11.

Motor switching at the drive output

Motor switching is possible with the drive unlocked. The integrated protection in Altivar

12 drives offers better immunity to downstream

breaking of the powered motor.

Introduction:

page 8

References:

page 14

Dimensions:

page 18

Connections:

page 22

Functions:

page 26

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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