描述

1794-OW8 Flex IO 繼電器輸出模塊

Allen-Bradley 1794-OW8是一個(gè)繼電器輸出模塊，是Flex I/O產(chǎn)品系列的一部分。該模塊主要具有八(8)個(gè)隔離常開(no . o)機(jī)電繼電器，額定250V AC, 2a, 50/60Hz電阻負(fù)載;120/240V AC, 50/60Hz,1800V A通，180V A斷;5…30V DC, 2a，電阻;

1794-OW8與1794-TB2、1794-TB3、1794-TB3S、1794-TBN和1794-TBNF端子基單元配套使用。如果使用1794-TBNF，請(qǐng)使用3.0安培，250VAC慢熔保險(xiǎn)絲或Allen-Bradley推薦的保險(xiǎn)絲。239003號(hào)。該模塊通過緩沖電路具有1.0 mA的斷態(tài)泄漏電流，最小接觸負(fù)載額定值為100 μA @ 100 mV DC。它的飛行員負(fù)荷額定值為r150,5…30V DC, 28V DC以下不超過1a。

1794-OW8兼容使用任何任何Flex I/O通信適配器以及與FlexBus控制器。該模塊電流為5V DC, 35ma，電源額定電壓為24V DC, 125ma。繼電器輸出通道在初始接觸電阻為30 mΩ時(shí)，兩個(gè)信號(hào)轉(zhuǎn)換的最大信號(hào)延遲為10 ms，開關(guān)頻率為每3秒或0.3Hz，在額定負(fù)載下，觸點(diǎn)平均彈跳時(shí)間為1.2 ms。此外，每個(gè)輸出觸點(diǎn)的預(yù)期觸點(diǎn)壽命為100,000次操作，最小@額定負(fù)載。

1794-OW8安裝有8個(gè)黃色狀態(tài)指示燈，每個(gè)通道1個(gè)，安裝在端子座上時(shí)按鍵開關(guān)位置為9。

1794-OW8的電源端子只使用+24伏直流電源，因?yàn)檩敵隼^電器開關(guān)時(shí)間的變化可能導(dǎo)致其中一個(gè)繼電器瞬間切換總負(fù)載電流。整個(gè)模塊的尺寸為1.8 x 3.7 x 2.1英寸。它兼容多種終端基礎(chǔ)單元，即1794-TB3、1794-TB2、1794-TBN、1794-TB3S、1794-TB3K、1794-TBNF、1794-TBNKF和1794-TB3SK。在額定負(fù)載下，它的機(jī)械壽命為10萬(wàn)次。1794-OW8的電阻繼電器輸出電流額定值在5至30伏直流時(shí)為2安培，在125伏直流時(shí)為0.22安培，在125伏直流和250伏直流時(shí)為2安培。該模塊還具有250伏的連續(xù)隔離電壓，用于繼電器到另一個(gè)繼電器、背板和電源，以及50伏的電源到背板。該模塊的外部直流電源電壓范圍為直流19.2至31.2伏，包括5%的交流紋波和125 mA的標(biāo)稱外部直流電源電流。在240伏交流電時(shí)，通過緩沖器的最大斷開狀態(tài)泄漏電流為1毫安。1794- ow8<e:2>的初始接觸電阻為30 M Ω，在100 mV DC下的最小接觸負(fù)載為100μA。在31.2伏直流電壓下，最大功耗為5.5瓦，最大散熱為18.8英熱單位/小時(shí)。OFF到ON和ON到OFF狀態(tài)的最大輸出延遲時(shí)間都是10毫秒。

1794-OW8 Flex IO 繼電器輸出模塊

The Allen-Bradley 1794-OW8 is a Relay output module that is part of the Flex I/O product family. This module primarily features Eight (8) isolated Normally Open (N.O.) electromechanical relay that are rated 250V AC, 2 A, 50/60Hz for resistive load; 120/240V AC, 50/60Hz,1800V A Make, 180V A Break; 5…30V DC, 2 A, Resistive;

The 1794-OW8 is used with 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN and 1794-TBNF terminal base units. If 1794-TBNF is used, use a 3.0 Ampere, 250VAC slow-blow fuse or the Allen-Bradley recommended fuse Littelfuse with part. number 239003. This module has a off-state leakage current of 1.0 mA through snubber circuit with minimum contact load rating of 100 μA @ 100 mV DC. It has a pilot duty rating of R150, 5…30V DC, 28V A not to exceed 1 A below 28V DC.

The 1794-OW8 is compatible for use any any Flex I/O communication adapters as well as with FlexBus controllers. This module has a current draw of 5V DC, 35 mA with supply voltage rating of 24V DC, 125 mA. The relay output channels has a maximum of signal delay 10 ms for both signal transitions while the initial contact resistance is 30 mΩ, switching frequency of 1 operation every 3 s or 0.3Hz at rated load and contact mean bounce time of 1.2 ms. Additionally, each output contact has an expected contact life of 100,000 operations, min @ rated loads.

The 1794-OW8 is installed with Eight (8) yellow status indicators, One for each channel and has a keyswitch position of 9 when mounting to the terminal base.

Use only +24 Volts DC power for the 1794-OW8’s power terminals because variations in relay switching time of the outputs may cause one of the relays to momentarily switch the total load current. The entire module measures 1.8 x 3.7 x 2.1 inches. It is compatible with several terminal base units, namely the 1794-TB3, 1794-TB2, 1794-TBN, 1794-TB3S, 1794-TB3K, 1794-TBNF, 1794-TBNKF, and the 1794-TB3SK. It also has a mechanical life of 100,000 operations at rated loads. The resistive relay output current ratings of the 1794-OW8 are 2 Amps at 5 to 30 Volts DC, 0.22 Amps at 125 Volts DC, and 2 Amps for 125 Volts DC and 250 Volts DC. The module also has a continuous isolation voltage of 250 Volts for relay to another relay, to the backplane, and to the power, and 50 Volts for power to the backplane. The external DC supply voltage range of this module is 19.2 to 31.2 Volts DC and it includes the 5% AC ripple and a nominal external DC supply current of 125 mA. It has a maximum off-state leakage current of 1 mA at 240 Volts AC through a snubber. The 1794-OW8a€?s initial contact resistance is 30 M Ω and its minimum contact load is 100 μA at 100 mV DC. It also has a maximum power dissipation of 5.5 Watts and a maximum thermal dissipation of 18.8 BTU/hour, both at 31.2 Volts DC. The maximum output delay time for both the OFF to ON and the ON to OFF states are 10 milliseconds.

 

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