安全回路監(jiān)控?cái)?shù)字輸出模塊SDOL-0424有四個(gè)24 Vdc，1 A

環(huán)路監(jiān)控輸出通道，可驅(qū)動(dòng)高達(dá)24 W的負(fù)載。最大模塊

負(fù)載為3.6 A。這些負(fù)載可以是電阻負(fù)載或電感負(fù)載。對(duì)于感應(yīng)負(fù)載

抑制二極管包括在每個(gè)輸出上。

輸出，包括抑制二極管、導(dǎo)線斷裂檢測和

短路檢測，經(jīng)過充分測試，因此可以用于安全

應(yīng)用。

對(duì)輸出進(jìn)行以下測試：

?斷電能力

?能夠通過二次方式斷電

?輸出之間的串?dāng)_

?抑制二極管的功能

?（外部）輸出接線中的導(dǎo)線斷裂

?輸出短路

SDOL-0424模塊每個(gè)通道有一個(gè)LED；總共四個(gè)。

如果某個(gè)通道處于關(guān)閉狀態(tài)，則其相應(yīng)的LED熄滅，并發(fā)出短暫的間歇性信號(hào)

閃爍。這表明正在進(jìn)行導(dǎo)線斷裂試驗(yàn)。

如果通道處于打開狀態(tài)且配置為非冗余，則其對(duì)應(yīng)的

LED亮起并發(fā)出（非常）短暫的周期性閃光，而這些閃光幾乎看不見

肉眼可見。這些指示正在進(jìn)行內(nèi)部關(guān)閉自檢。

如果通道處于打開狀態(tài)并且配置是冗余的，則其相應(yīng)的指示燈

似乎間歇性閃爍。發(fā)生這種情況是因?yàn)榭刂浦械哪K

處理器2短暫關(guān)閉，使控制處理器1中的模塊能夠

進(jìn)行自檢。控制處理器1中的模塊自檢完成后

完成后，控制處理器2中的模塊再次打開（這可能

花費(fèi)一些時(shí)間），并且控制處理器1中的模塊關(guān)閉以允許

控制處理器2中的模塊執(zhí)行自檢等。因此，它看起來像

如果兩個(gè)模塊的通道LED間歇性閃爍。LED閃爍速度

可能會(huì)有所不同，具體取決于應(yīng)用程序周期時(shí)間和

診斷測試間隔。

SDOL-0424模塊的環(huán)路監(jiān)控輸出通道通常需要

范圍設(shè)置模塊，用于將電流感測電平置于適當(dāng)范圍或

防止在備用通道上檢測到引線斷裂。為此，范圍設(shè)置

可以使用模塊BSDOL-04UNI。

冗余SDOL-0424模塊只需要一個(gè)BSDOL-04UNI模塊。

BSDOL-04UNI模塊放置在

19英寸機(jī)箱中IO背板的背面。

The safe loop-monitored digital output module SDOL-0424 has four 24 Vdc, 1 A

loop-monitored output channels to drive loads up to 24 W. The maximum module

load is 3.6 A. These loads may be resistive or inductive. For inductive loads, a

suppression diode is included on each output.

The outputs, including the suppression diode, the lead breakage detection and

short-circuit detection, are fully tested and may therefore be used for safe

applications.

The outputs are tested for:

? Ability to de-energize

? Ability to de-energize via secondary means

? Cross talk between outputs

? Function of the suppression diodes

? Lead breakage in the (external) output wiring

? Short circuit of the outputs

The SDOL-0424 module has one LED for each channel; four in total.

If a channel is Off, its corresponding LED is off and gives short intermittent

flashes. These indicate the lead breakage tests are being performed.

If a channel is On and the configuration is non-redundant, its corresponding

LED is on and gives (very) short periodic flashes, which are hardly visible to the

naked eye. These indicate the internal switch-off self-tests are being performed.

If a channel is On and the configuration is redundant, its corresponding LEDs

appear to flash intermittently. This happens because the module in Control

Processor 2 switches off briefly to allow the module in Control Processor 1 to

perform its self-test. After the self-test of the module in Control Processor 1 has

been completed, the module in Control Processor 2 switches on again (this may

take some time) and the module in Control Processor 1 switches off to allow the

module in Control Processor 2 to perform its self-test, etc. Due to this, it looks as

if the channel LEDs of both modules flash intermittently. The LED flash speed

may vary, depending on the application cycle time and configuration of

Diagnostic Test Interval.

The loop-monitored output channels of the SDOL-0424 module usually need a

range setting module to put the current sense level in the proper range or to

prevent lead breakage detection on spare channels. For this, the range setting

module BSDOL-04UNI can be used.

Redundant SDOL-0424 modules require only one BSDOL-04UNI module.

The BSDOL-04UNI module is placed on a programming connector (Px) on the

back of the IO backplane in the 19-inch chassis.