描述

KOLLMORGEN-S20660-SRS- 特定輸入通道的故障不會(huì)影響系統(tǒng)中的其它通道

KOLLMORGEN? 科爾摩根 丹納赫伺服驅(qū)動(dòng)器? S20660-SRS S22460-SRS S20330-SRS S200系列
24位Σ-Δ型ADC集成可編程增益陣列(PGA)和基準(zhǔn)電壓源，為靈活地連接熱電偶或RTD傳感器提供完整的特性組合。

其特性包括片內(nèi)基準(zhǔn)電壓源、可編程增益陣列、激勵(lì)電流、偏置電壓發(fā)生器以及提供增強(qiáng)50 Hz和60 Hz抑制選項(xiàng)的靈活濾波。 AD7124-4采用5 mm × 5 mm小型LFCSP封裝，因而非常適合空間為重要考慮因素的通道間隔離設(shè)計(jì)。 它還包括多個(gè)可供用戶使用的診斷功能。

ADuM5010隔離式DC/DC轉(zhuǎn)換器通過(guò)集成的isoPower?技術(shù)提供3.3 V隔離電源。ADuM1441用于隔離AD7124-4的串行外設(shè)接口(SPI)。AD7124-4微功耗隔離器空閑時(shí)每通道的功耗僅4.8 μA，能效非常高。ADP2441是36 V降壓DC-DC穩(wěn)壓器，采用工業(yè)標(biāo)準(zhǔn)24 V電源，具有寬輸入電壓容差。ADP2441用于將輸入電壓降至3.3 V，從而為所有控制器側(cè)電路供電。
系統(tǒng)概述

通道間隔離在自動(dòng)化系統(tǒng)中極具優(yōu)勢(shì)，因?yàn)樘囟ㄝ斎胪ǖ赖墓收喜粫?huì)影響系統(tǒng)中的其它通道。 然而，通道間隔離輸入模塊給設(shè)計(jì)提出了重大挑戰(zhàn)，具體表現(xiàn)在復(fù)雜度、空間限制和系統(tǒng)成本這些方面。

熱電偶或RTD輸入是工業(yè)自動(dòng)化系統(tǒng)的常用輸入，因此，設(shè)計(jì)一個(gè)能夠處理兩者的溫度輸入模塊很有用。 這種靈活性最大程度地減少了兩種輸入模塊的設(shè)計(jì)工作，而且為模塊用戶提供了靈活性。

AD7124-4顯著降低了設(shè)計(jì)復(fù)雜度，提供一個(gè)片上系統(tǒng)，能夠執(zhí)行熱電偶和RTD傳感器所需的全部測(cè)量功能。

圖1所示電路的每個(gè)通道大小僅有27 mm x 50 mm，若在印刷電路板(PCB)兩面貼放器件，則上述面積可進(jìn)一步縮小。 之所以能實(shí)現(xiàn)如此小的尺寸，是因?yàn)锳D7124-4采用5 mm × 5 mm小型LFCSP封裝，并且集成了幾乎所有必需的功能，除了隔離以及附加前端濾波和保護(hù)之外。 用于數(shù)據(jù)和電源隔離的隔離電路僅占用87 mm2，最小合并寬度為12.5 mm。

KOLLMORGEN-S20660-SRS- 特定輸入通道的故障不會(huì)影響系統(tǒng)中的其它通道

KOLLMORGEN Kollmorgen Kollmorgen Danaher servo drive S20660-SRS S22460-SRS S20330-SRS S200 series
The 24-bit sigma-δ ADC integrates a programmable gain array (PGA) and a voltage reference source to provide a complete set of characteristics for flexibly connecting thermocouples or RTD sensors.

Features include an on-chip reference voltage source, programmable gain array, excitation current, bias voltage generator, and flexible filtering that provides enhanced 50 Hz and 60 Hz rejection options. The AD7124-4 comes in a 5 mm × 5 mm small LFCSP package, making it ideal for channel isolation designs where space is an important consideration. It also includes several diagnostic functions available to users.

The ADuM5010 Isolated DC/DC converter provides 3.3V isolated power through integrated isoPower? technology. The ADuM1441 is used to isolate the serial peripheral interface (SPI) of the AD7124-4. The AD7124-4 micropower isolator consumes only 4.8 μA per channel when idle, making it extremely energy efficient. The ADP2441 is a 36 V buck DC-DC regulator with an industry standard 24 V supply and wide input voltage tolerance. The ADP2441 is used to reduce the input voltage to 3.3V, thus powering all controller side circuits.
System overview

Interchannel isolation is advantageous in automated systems because the failure of a particular input channel does not affect other channels in the system. However, isolating input modules between channels presents significant design challenges in terms of complexity, space constraints, and system cost.

Thermocouple or RTD inputs are commonly used in industrial automation systems, so it is useful to design a temperature input module that can handle both. This flexibility minimizes the design effort for both input modules and provides flexibility for module users.

The AD7124-4 significantly reduces design complexity and provides a system-on-chip capable of performing all the measurement functions required for thermocouple and RTD sensors.

Each channel size of the circuit shown in Figure 1 is only 27 mm x 50 mm, which can be further reduced by placing devices on both sides of the printed circuit board (PCB). Such a small size is possible because the AD7124-4 comes in a 5 mm x 5 mm small LFCSP package and integrates almost all the necessary features, except for isolation and additional front-end filtering and protection. The isolation circuit for data and power isolation occupies only 87 mm2 and has a minimum combined width of 12.5 mm.

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Company Introduction:
Chengdu Sunshine Xihe Co., Ltd. specializes in one-stop procurement consulting for imported industrial spare parts, offering original equipment and professional discontinued parts services. We are committed to providing efficient and reliable automation solutions for our customers. Customer support fast responseThe network of partners spans all continentsGlobal partner networkAlways achieve more delivery, be it parts, service or speed



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