Atlas Copco ZT 315 VSD (FF VSD⁺) Oil-Free Rotary Screw Air Compressor

Описание

Where the ZT 315 VSD Sits in the Oil-Free Range

The ZT 315 VSD is the upper step of the ZR/ZT 200-355 VSD+ platform, the oil-free line that Atlas Copco builds for plants whose compressed air demand has grown past the 110-160 class and now needs the high flow of the 200-355 bracket.

Two 160 kW drive modules give the ZT 315 VSD its 315 kW of installed power. The air-cooled machines of the line below this range are covered by the ZT 250 VSD, and the 355 kW unit sits one step above. The VSD+ control turns both modules across a turn-down window that reaches down to 11% of full speed.

The platform shares one body design from 200 to 355 kW, so a plant that installs the 315 kW step keeps the same layout, the same service concept and the same spare parts logic as the smaller and larger machines around it.

The VSD+ control of the ZT 315 VSD also reads the demand of the network directly.

The letter Z of the ZT 315 VSD marks the oil-free architecture of the range. The compression elements never inject oil into the air stream, so the delivered air carries no added oil and the ZT 315 VSD fits food, pharmaceutical, electronics and textile processes that audit their air supply. The T marks the air-cooled branch: the cooler fan draws plant air through the aftercooler and the oil cooler, which keeps the package simple to site where no water circuit is available.

Минимальное, эффективное и максимальное

The VSD+ concept drives the motor between a minimum, an effective and a maximum pressure setting, and the rated data lists a flow band for each of the three. At the minimum setting of 4 bar(e) the ZT 315 VSD produces 187 to 948 l/s (11 to 57 m3/min), at the effective setting of 7 bar(e) it produces 186 to 946 l/s (11 to 57 m3/min), and at the maximum of 10.4 bar(e) it still delivers 181 to 796 l/s (11 to 48 m3/min).

Установка, сетевая мощность которой рассчитана с учетом пиковой нагрузки, может работать тихо, неспешно и эффективно в ночные смены, а затем переходить на полную мощность, когда наступает дневная нагрузка.

These three bands come from one machine. The ZT 315 VSD does not change its gearing between the settings; the drive simply moves the two modules across their speed window, and the rated flow follows.

Technical Specifications of the ZT 315 VSD

Приведенные ниже данные взяты из официальных технических характеристик привода ZR/ZT 200-355 VSD+. Производительность агрегата измеряется в соответствии с ISO 1217, Приложение E, 4-е издание (2009 г.), при эталонных условиях: относительная влажность 0%, абсолютное давление на входе 1 бар и температура на входе 20 °C. Производительность по свободному воздуху измеряется при эффективном рабочем давлении.

Номинальные характеристики блока VSD+

The Pack build carries the compressor, the gear train, the drive system and the controls in one enclosure of 4417 mm length, 1754 mm width and 2150 mm height. The table lists the three pressure bands for the 50 Hz supply.

Для установок, работающих от сети с частотой 60 Гц, номинальные характеристики данного блока следующие.

The A-weighted emission sound pressure level at the work station is measured according to ISO 2151:2008 with the sound intensity scanning method of ISO 9614-2, and the published value carries the total uncertainty of +/- 3 dB(A). At 78 dB(A) the ZT 315 VSD sits at the sound level of a normal industrial hall, and the air-cooled package is sited where the plant ventilation can carry the rejected heat away.

Технические характеристики полнофункциональной сборки iMD

The Full Feature build adds the integrated iMD dryer, the heat-of-compression unit that dries the air inside the compressor package. Because the dryer works with heat the process already produces, the FAD band shifts to the ratings below.

При частоте питания 60 Гц показания сборки Full Feature iMD выглядят следующим образом.

Размеры и вес

Across the 200-355 platform the Pack body keeps one footprint, and the rated weight of the ZT Pack stands at 6560 kg (14462.18 lb). The Full Feature iMD package adds the dryer internals inside the same enclosure and reads 7900 kg (17416 lb). A plant planning its floor can reserve one bay for the Pack and size the service aisle for the air-cooled cooler fan at the rear of the enclosure.

Два привода NEOS без потерь при разгрузке

The ZT 315 VSD carries two NEOS drive bodies, each coupled to its own 160 kW permanent magnet motor, and the VSD+ control splits the work between them across the speed window. Between 11% and 100% of speed the machine changes its flow with the demand of the plant, so the blow-off and idle phases that burn energy on fixed-speed machines simply do not appear in the duty cycle. At part load each element runs well inside its rating.

Конструкция с двумя приводами распределяет механическую нагрузку: каждый элемент работает с меньшей долей от номинальной мощности, что позволяет снизить уровень шума, износ и температуру при частичной нагрузке.

Диапазон скоростей двигателя, предусмотренный концепцией VSD+, позволяет поддерживать процессы сепарации масла и сушки в пределах рабочих диапазонов, при этом расход регулируется в соответствии с потребностью. Контроллер Elektronikon координирует работу обоих модулей, а приводные валы, зубчатые передачи и подшипники корпусов NEOS рассчитаны на непрерывную работу в режиме без масла.

Air Cooling and the Two-Stage Air Path

Air enters the ZT 315 VSD through the inlet filter and passes the first compression stage, which lifts the pressure to an intermediate level. The pulsation dampener steadies the flow before the intercooler, the automated moisture separation removes the condensate, and the second stage brings the air to its final pressure with the efficiency that two-stage compression gives over a single stage at these ratios.

The cooler fan draws plant air through the aftercooler and the oil cooler, so the ZT 315 VSD needs no water circuit and no pipework to a cooling tower. The fan speed follows the load, which keeps the rejected heat proportional to the work the machine is doing and avoids over-cooling at part load.

The oil loop of the ZT 315 VSD itself pumps cooled oil through a high efficiency filter to the gear train, and bypass valves protect the filter while keeping the oil pressure stable across the speed range of the drive.

Класс чистоты воздуха 0 для критически важных технологических процессов

The ZT 315 VSD is certified to ISO 8573-1 Class 0, the strictest oil quality class of the standard, which sets the total oil carry-over limits at the values the certification measured instead of a declared figure. Together with the ISO 1217 performance rating and the ISO 9001 manufacturing certificate, the machine documents what it delivers to processes that must prove their air quality to auditors.

Интегрированная сушилка с использованием тепла сжатия

In the Full Feature build the drying function uses the heat of compression instead of external energy, and the whole drying function lives inside the compressor enclosure. The air leaves the package with the dew point already controlled, so the ZT 315 VSD delivers Class 0 air with dry air built into the same footprint as the Pack.

Управление и мониторинг

The Elektronikon controller of the ZT 315 VSD manages the pressure band, the two drive modules and the dryer, and it logs the operating data that a maintenance team needs. The display shows the state of each module, and the controller communicates with plant systems so a central room can supervise several machines as one supply group. Service planners read the logged hours and the component states directly from the controller, which turns the maintenance plan of the ZT 315 VSD into a schedule instead of a reaction.

Варианты и инженерные решения

The 200-355 platform carries an options list that adapts the machine to the site: energy recovery units that put the cooling heat to work, sound attenuation packages, connection sets for the air circuit, and control accessories that link the machine into a master-supply network. The build of the ZT 315 VSD is selected at order time, and the Pack and iMD concepts share the same base design so a later extension of the plant can add machines of the same family without re-engineering the room.

Applications of the ZT 315 VSD

The ZT 315 VSD fits plants that run a continuous oil-free demand around the clock: glass and bottle lines, tire curing, chemical dosing, central medical and laboratory supplies, and textile mills that dry and shape fibers with clean air. The 10.4 bar(e) maximum covers high-pressure networks directly, and the flow band of 181 to 948 l/s follows the batch rhythm of the production day.

Air cooling makes the ZT 315 VSD a natural choice in plants without a cooling water circuit, because the ZT 315 VSD needs no ductwork to a tower and keeps its rated output in ventilated plant rooms. Where the site wants dry air without extra dryer hardware, the Full Feature iMD build delivers Class 0 air with the dew point already controlled inside the supply.

Service and Support Around the ZT 315 VSD

Service access on the ZT 315 VSD follows the layout of the platform: one side of the enclosure carries the routine service points, and the fluid, filter and separator service kits of the ZT 315 VSD match the shared design of the 200-355 family. Atlas Copco backs the installed base with a global service organization, and genuine parts for the ZT 315 VSD are specified in the service plan that ships with the machine.

Часто задаваемые вопросы

What does the ZT 315 VSD deliver at maximum pressure?

At the maximum setting of 10.4 bar(e) the Pack build produces 181 to 796 l/s (11 to 48 m3/min), and the Full Feature iMD build produces 289 to 793 l/s (17 to 48 m3/min) from its minimum setting of 6 bar(e).

Is the ZT 315 VSD air-cooled?

Yes. The T in the model name marks the air-cooled branch of the range, and the cooler fan draws plant air through the aftercooler and the oil cooler with no water circuit required.

Насколько воздух очищен от масла?

Установка сертифицирована в соответствии со стандартом ISO 8573-1, класс 0, а благодаря безмасляной конструкции элемента в поток воздуха не попадает масло при любой скорости, задаваемой системой управления VSD+.

What does the Full Feature iMD build add?

The iMD integrates the heat-of-compression dryer inside the compressor package, so the ZT 315 VSD delivers Class 0 air with the dew point already controlled and no separate dryer hardware to site.

Насколько низко может опускаться машина?

Система управления VSD+ регулирует работу двух приводов в диапазоне до 11% от полной скорости, благодаря чему расход соответствует потребностям установки в пределах диапазонов минимального, эффективного и максимального давления без потерь, связанных с разгрузкой.

How loud is the ZT 315 VSD?

The rated emission sound pressure level at the work station is 78 dB(A) across the Pack and Full Feature iMD builds, measured according to ISO 2151:2008 and ISO 9614-2 with a total uncertainty of +/- 3 dB(A).