黑箱 IC821A 通用 RS-232 转 RS-422/485 转换器，光隔离，2 个端口 refusal=null

Black Box IC821A RS-232 to RS-422/485 converter showing DB9 connector, terminal blocks, and status LED indicators against white background-alternate-image1
Black Box IC821A RS-232 to RS-422/485 converter showing DB9 connector, terminal blocks, and status LED indicators against white background-alternate-image1
Black Box IC821A RS-232 to RS-422/485 converter showing DB9 connector, terminal blocks, and status LED indicators against white background-alternate-image1
黑箱 IC821A 通用 RS-232 转 RS-422/485 转换器，光隔离，2 个端口 refusal=null
Black Box IC821A RS-232 to RS-422/485 converter showing DB9 connector, terminal blocks, and status LED indicators against white background-alternate-image1

黑箱 IC821A 通用 RS-232 转 RS-422/485 转换器，光隔离，2 个端口 refusal=null

Black Box IC821A

$4,924.00 $7,268.00 節省 $2,344
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产品关键特征

  • 数据传输速度高达115 kbps，距离可达4000英尺。
  • 可在点对点或多点应用中操作
  • 支持2线半双工或4线半双工或全双工。
  • 仅支持异步（数据引脚）。
  • 最多可连接32个RS485设备以创建大型多点网络
  • RS485驱动程序在RS232侧的每个间隔状态下自动启用。
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Black Box

IC821A

Black Box Universal RS-232 to RS-422/485 Converter with Opto-Isolation

Transform your serial communication capabilities with the Black Box IC821A Universal RS-232 to RS-422/485 Converter. This professional-grade converter features 2000-VAC opto-isolation and seamlessly converts RS-232 signals to RS-422/RS-485 signals and vice versa, requiring no external software for data flow control.

Advanced Communication Features

  • Robust 2000-VAC isolation protection
  • Selectable RS-422 operation modes
  • Versatile RS-485 configuration for 2-wire half-duplex or 4-wire full-duplex
  • Automatic RS-485 driver control
  • DB9 female connector for RS-232 DCE interface
  • Removable terminal block for RS-422/RS-485 connections

Technical Specifications

Specification Detail
Dimensions 1.7" (H) x 0.9" (W) x 3.9" (D)
Form Factor External
Port Configuration 2 Ports (RS-232 and RS-422/485)
Power Interface Terminal Block

Compliance and Warranty

This TAA-compliant device is manufactured in the United States and meets RoHS environmental standards. Backed by a comprehensive 1-year limited warranty, ensuring reliable performance for your industrial communication needs.

BLACK BOX® 通用 RS-232 到 RS-422/485 转换器带光电隔离，能够将 RS-232 信号隔离并转换为 RS-422/RS-485 信号，反之亦然。与其他转换器不同，无需外部软件来控制数据流。RS-232 输入通过 DB9 母头连接器连接到 DCE，并且 RS-422/RS-485 信号通过可拆卸终端块连接。要为终端块提供外部电源，您需要我们的 120-VAC/12-VDC 壁挂式电源（PS1003）。

对于 RS-232，连接需要 RD、TD 和信号地。

在 RS-422 模式下，驱动器始终启用以实现全双工通信。传输需要一对双绞线，接收也需要一对双绞线。此外，还需要一根接地参考线。开关设置为：开关 1：RS-422；开关 2：回显开启；开关 3 和 4：4 线。

在两种 RS-485 模式下，RS-485 驱动器在每个空闲状态下自动启用，依赖于 RS-232 信号。当 RS-232 数据处于标记或空闲状态时，RS-485 驱动器将被禁用，RS-485 数据线会在 4.7 欧姆电阻提供的偏置下保持在标记状态；根据您使用的终端，可能需要更改此电阻的值。

要以最少的布线连接多台 RS-485 设备，请选择该单元的 2 线半双工 RS-485 模式。当请求数据时，被寻址设备会传输数据，然后恢复到接收状态。此模式的开关设置为：开关 1：RS-485；开关 2：回显关闭；开关 3 和 4：2 线。

对于 4 线主/从电路，选择该单元的 4 线全双工 RS-485 模式。在此模式下，所寻址的设备可以在接收来自先前请求的数据时同时接收数据。当用作单主系统中的主设备时，可以选择开关 1，因为该单元是系统中唯一的发射器。当用作 RS-485 从设备时，RS-232 设备必须提供寻址能力。在主/从系统中，由终端从设备提供偏置。此模式的开关设置为：开关 1：RS-485；开关 2：回显开启；开关 3 和 4：4 线。

Return Policy

Time to Return

Standard Return Policy

We offer a hassle-free 30-day returns policy for domestic (US) orders, excluding non-refundable items. Refund or Replacement within 30 days of the delivery date. All products that fall under the Standard Return Policy qualify for our 30-Day Hassle-Free Returns. Please see the section above for more details.

Replacement Only Return Policy

Replacement within 30 days of the delivery date.

Manufacturer Only Return Policy

Covered by the manufacturer's warranty. Please refer to the terms and conditions for the manufacturer's warranty or contact the manufacturer.

Holiday Extended Return Policies

Extended Holiday Return Policy.

Qualifying purchases of products displaying the " Extended Holiday Return Policy ", from November 1st, 2023 to December 25, 2023, are eligible for a Refund or Replacement until January 31, 2024.

Extended Holiday Replacement-Only Return Policy

Qualifying purchases of products displaying the " Extended Holiday Replacement-Only Return Policy ", from November 1st, 2023 to December 25, 2023, are eligible for a Replacement until January 31, 2024.

Black Box IC821A RS-232 to RS-422/485 converter showing DB9 connector, terminal blocks, and status LED indicators against white background

Industrial-Grade Signal Conversion with 2000V Isolation Protection

The IC821A converter delivers reliable RS-232 to RS-422/485 signal conversion with built-in 2000V isolation protection. Its robust design features clear terminal labeling and status indicators for TD and RD signals, ensuring proper connection and monitoring of data transmission. The compact form factor houses sophisticated circuitry that enables automatic RS-485 driver control and flexible configuration options through DIP switches. The removable terminal blocks provide secure connectivity while allowing for easy installation and maintenance in industrial environments.

Technical Specifications

  • 2000V AC isolation protection for equipment safety
  • Dual interface support with DB9 female connector and terminal blocks
  • Auto-sensing RS-485 driver control for optimal data flow

Applications

  • Industrial automation systems requiring signal conversion
  • Manufacturing equipment integration with legacy serial devices
  • Process control systems with mixed RS-232 and RS-422/485 protocols
常见问题
The Black Box Universal RS-232 to RS-422/485 Converter features 2000-VAC isolation, selectable RS-422 operation, RS-485 support for both 2-wire half-duplex and 4-wire full-duplex modes, and automatic RS-485 driver control. It doesn't require external software for data flow control and comes with a DB9 female connector for RS-232 input and a removable terminal block for RS-422/RS-485 signals.
The converter has compact dimensions measuring 1.7 inches in height, 0.9 inches in width, and 3.9 inches in depth. It features an external form factor design that makes it easily accessible and installable.
In RS-485 mode, the driver is automatically enabled during each space state by RS-232 signal presence. When RS-232 data is in mark or idle state, the RS-485 driver disables and data lines are held in mark state by a 4.7-ohm resistor. It supports both 2-wire half-duplex and 4-wire full-duplex operations, with specific switch settings for each mode.
The converter requires external power supplied through a terminal block connection. It specifically needs a 120-VAC/12-VDC Wallmount Power Supply (PS1003, sold separately) to function properly.
The converter is RoHS certified and TAA compliant. It's environmentally friendly and manufactured in the United States, meeting various regulatory standards for electronic equipment. The 2000-VAC isolation certification ensures robust protection between input and output circuits.
For RS-422 mode configuration, set Switch 1 to RS-422, Switch 2 to Echo On, and Switches 3 and 4 to 4 Wire. In this mode, the driver is always enabled for full-duplex communications, requiring a twisted pair for transmit, another for receive, and a ground reference wire.
The Black Box Universal RS-232 to RS-422/485 Converter comes with a 1 Year Limited Warranty, providing coverage against manufacturing defects and ensuring customer support during this period.
In 2-wire half-duplex RS-485 mode, the device allows connection to multiple RS-485 devices with minimal wiring. The configuration requires Switch 1 set to RS-485, Switch 2 to Echo Off, and Switches 3 and 4 to 2 Wire. In this mode, devices transmit data when requested and then return to receive status.

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