Siemens
СРЕДСТВА ПРОМЫШЛЕННОЙ АВТОМАТИЗАЦИИ
официальный партнер Сименс
Каталог СА01 2016
архивный
(4872) 700-366
skenergo@mail.ru

3RA1953-2N

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Заказной номерВесPGОписание продуктаЦена
3RA1953-2N0.7141BSET OF LINKS, OPEN F. YD-STARTER ТИПОРАЗМЕР. S6-S6-S6110.63 ?

Other Functional Devices
Electronic timing relay block with semiconductor output

The timer module, which is available in the "ON-delay" and "OFF-delay" versions with control signal, allows time-delayed functions up to 100 s (3 delay ranges). Contactors fitted with a timing relay block close or open after a delay according to the set time.

The ON-delay variant of the timing relay is connected in series with the contactor coil; terminal A1 of this coil must not be connected.

With the OFF-delay variant of the timing relay, the contactor coil is contacted directly through the relay; terminals A1 and A2 of the contactor coil must not be connected.

The timing relays are suitable for both AC and DC operation.

Size S00

The version for size S00 contactors is fitted onto the front of the contactor (with the control supply voltage switched off) and then slid into its latched position; at the same time, the timing relay is connected by means of plug-in contacts to coil terminals A1 and A2 of the contactor. Any contactor coil terminals which are not required are sealed off by means of covers on the enclosure of the timing relay block, to prevent them from being connected inadvertently.

A varistor is integrated in the timer module in order to damp opening surges in the contactor coil.

The electronic timing relay block cannot be mounted on size S00 coupling contactors.

Sizes S0 to S3

The timing relay block for size S0 to S3 contactors is plugged into coil terminals A1 and A2 on top of each contactor; the timing relay is connected both electrically and mechanically by means of pins.

A varistor is integrated in the timer module in order to damp opening surges in the contactor coil.

Configuring note:

a)

b)

The activation of loads parallel to the start input is not permissible with AC operation (see (a) in the circuit diagram).

The 3RT1916-2D... / 3RT1926-2D... OFF-delay timing relay blocks have a zero potential start input B1. This means that if there is a parallel load on terminal B1, activation can be simulated with AC voltage. In this case, the additional load (e.g. contactor K3) must be wired in accordance with (b).

OFF-delay device for size S00 to S3 contactors

AC and DC operation

IEC 60947, EN 60947

For screw and snap-on mounting onto 35 mm standard mounting rails. The OFF-delay devices have screw terminals.

The OFF-delay device prevents a contactor from dropping out unintentionally when there is a short-time voltage dip or voltage failure. It supplies a downstream, DC-operated contactor with the necessary energy during a voltage dip, ensuring that the contactor does not trip. The 3RT1916 OFF-delay devices are specifically designed for operation with the 3RT contactors and 3RH contactor relays in the SIRIUS series.

The OFF-delay device operates without external voltage on a capacitive basis, and can be energized with either AC or DC (24 V version only for DC operation). Voltage matching, which is only necessary with AC operation, is performed using a rectifier bridge.

A contactor opens after a delay when the capacitors of the solenoid coil, built into the OFF-delay device, are switched in parallel. In the event of voltage failures, the capacitors are discharged via the solenoid coil and thereby delay the opening of the contactor.

If the command devices are upstream of the OFF-delay device in the circuit, the OFF-delay takes effect with every opening operation. If the opening operation is downstream of the OFF-delay device, an OFF-delay only applies in the event of failure of the mains voltage.

Operation

In the case of the versions for rated control supply voltages of 110 V and 230 V, either AC voltage or DC voltage can be applied on the line side, whereas the variant for 24 V is designed for DC operation only.

A DC-operated contactor is connected to the output according to the input voltage that is applied.

The mean value of the OFF-delay is approximately 1.5 times the specified minimum time.

EMC suppression module, three-phase for size S00 contactors

A so-called counter-e.m.f. (electromotive force) is produced when motors or various inductive loads are turned off. Voltage peaks of up to 4 000 V may occur as a result, with a frequency spectrum from 1 kHz to 10 MHz and a rate of voltage variation from 0.1 to 20 V/ns.

Capacitive input to various analog and digital signals makes it necessary to suppress interference in the load circuit.

Reducing contact arcing

The connection between the main current path and the EMC suppression module enables contact arcing, which is responsible for contact erosion and the majority of clicking noises, to be reduced; this in turn is conducive to an electromagnetically compatible design.

Higher operational reliability

Since the EMC suppression module achieves a significant reduction in radio-frequency components and the voltage level in three phases, the contact endurance is also improved considerably. This makes an important contribution towards enhancing the reliability and availability of the system as a whole.

Dispensing with fine graduations

There is no need for fine graduations within each performance class, as smaller motors inherently have a higher inductance, so that one solution for all fixed-speed operating mechanisms up to 5.5 kW is adequate.

Two electrical versions are available:

  • The advantages of the RC circuit lie mainly in the reduction in the rate of rise and in its RF damping ability. The selected values ensure effective interference suppression over a wide range.
  • The varistor circuit can absorb a high energy level and can also be used for frequencies ranging from 10 to 400 Hz (closed-loop controlled operating mechanisms). There is no limiting below the knee-point voltage, however.
Additional load module

Size S00 for plugging onto the front of the contactors with and without auxiliary switch block

Coupling links for mounting on contactors of sizes S0 to S3

DC operation

IEC 60947 and EN 60947

The coupling link is suitable for use in any climate. It is finger-safe according to IEC 60529. The terminal designations comply with EN 50005.

System-compatible operation with 24 V DC, operating range 17 to 30 V.

Low power consumption in conformity with the technical specifications of the solid-state systems. An LED indicates the switching state.

Surge suppression

The 3RH1924-1GP11 coupling link has an integrated surge suppressor (varistor) for the contactor coil being switched.

Mounting

The 3RH1924-1GP11 coupling link is mounted directly on the contactor coil.

Solder pin adapters

Solder pin adapters for size S00 contactors are available in two versions:

  • Solder pin adapter for contactors with one integrated auxiliary contact
  • Solder pin adapter for contactors with mounted 4-pole auxiliary switch block
Screw adapters

Plug-on adapters improve the accessibility of the screw connection for size S0 contactors. As a result, it is possible to position the screwdriver vertically even when using insulated screwdrivers or power screwdrivers.

The adapters can be optionally rotated through 90° before mounting.

Sealable covers for sizes S00 to S12

When contactors and contactor relays are used in safety-related applications, it must be ensured that it is impossible to operate the contactors manually.

For SIRIUS contactors there are sealable covers available for this purpose as accessories; these prevent accidental manual operation. These are transparent molded-plastic caps with a bracket that enables the contactor to be sealed.

















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Арматура DENDOR

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Датчики и измерители

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Регуляторы и регистраторы

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Пневматическое оборудование

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Краны и Клапаны

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Измерительные приборы

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Системы беспроводного управления «умный дом»

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Бесконтактные выключатели Конечные выключатели Оптические датчики Энкодеры

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SKW-FS - Установка умягчения

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SKW-FK - Установка обезжелезивания
Каталог оборудования 2016
Каталог продуктов Siemens Industry Приводная техника Техника автоматизации Системы автоматизации Системы визуализации SIMATIC HMI Системы идентификации Промышленные коммуникации SIMATIC NET Промышленные аппараты управления SIRIUS Системы Коммутационные аппараты SIRIUS Контакторы Контакторы для коммутации электродвигателей Reversing Contactor Assemblies Contactor Assemblies for Star-delta (Wye-delta) Starting Сборки контакторов Контакторы для прочих задач Вспомогательные контакторы SIRIUS Согласующие реле 3TX7, 3RS18 Реле контроля SIRIUS 3RR2 для установки на контакторы 3RT2 Принадлежности / Запасные части Для контакторов и вспомогательных контакторов SIRIUS 3RT2, 3RH2 Для контакторов и вспомогательные контакторы SIRIUS 3RT, 3RH Блок дополнительных контактов Ограничители перенапряжения Modules for Contactor Control Другие функциональные принадлежности Solenoid Coils Главные контакты Дугогасительные камеры Принадлежности для контакторов с винтовым подсоединением Запасные части Для контакторов 3T for SIRUS 3RT12 and 3TF6 Vacuum Contactors Полупроводниковые коммутационные устройства SIRIUS Аппаратура защиты Фидеры и пускатели двигателей Функциональные, коммутирующие реле и преобразователи Оборудование безопасности Позиционные выключатели и выключатели для систем безопасности Устройства управления и индикации Трансформаторы и блоки питания Другие продукты и решения Планирование и конфигурирование для SIRIUS Промышленные информационные технологии Управление на базе РС Системы управления процессом Датчики Блоки питания Продукты для специальных требований Автоматизация и безопасность зданий Низковольтная коммутационная техника Технология безопасности Системные решения и продукты для отраслей Сервис ... и все, что Вам еще необходимо




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