3BSE032402R1工控電路卡件
直流電源通過(guò)直流輸入卡連接到系統(tǒng)57接線盒TB1。
直流輸入卡提供二極管隔離，以允許連接：兩個(gè)獨(dú)立的電源。例如市電衍生直流電源以及電池備用直流電源。請(qǐng)注意，電流將從提供最高電壓輸入，在某些情況下
電流將在兩個(gè)輸入之間共享。兩個(gè)輸入中的每一個(gè)具有雙+24V和0V端子，便于通過(guò)電源連接或輸入源的并聯(lián)。帶保險(xiǎn)絲的+24V輸出是兩個(gè)直流輸入的組合，為用于為輔助設(shè)備供電。
獨(dú)立供電控制卡
注：在單獨(dú)供電的控制系統(tǒng)中，直流連接仍為為直流輸入卡提供電源所需工程卡。
如果本地或其他法規(guī)要求單獨(dú)連接，以實(shí)現(xiàn)配電的最高完整性。單通道控制卡的單獨(dú)供電很容易實(shí)現(xiàn)
如下：（1） 在單通道控制卡上，從位置1-2，然后重新安裝到位置2-3，如下所示：
重要的控制卡的單獨(dú)電源必須熔斷外部通過(guò)1A保險(xiǎn)絲
注：在舊版本的單通道控制卡上，鏈路LK1未安裝。在這種情況下，黃色盤(pán)保險(xiǎn)絲FS1必須：從卡上物理移除。（2） 將+24V直流電源連接至相應(yīng)的現(xiàn)場(chǎng)或繼電器接口卡端子35（+24V）和36（0V），如上所示。
交流至直流電源裝置連接警告
交流至直流電源裝置必須接地。
AC至DC電源單元的輸入電源可以是：
a、 85V至264V的交流電源，頻率為47Hz至440Hz。
b、 110V至340V的直流電源（請(qǐng)參閱Zellweger Analytics關(guān)于dc電源的信息）。
電源必須在電源處最大熔斷6A。在配電盤(pán)。如果使用其他電纜，則必須：額定電源至少為6A。
兩條電纜從交流至直流電源裝置的后部引出：
a、 交流輸入
交流電源電纜連接采用顏色編碼棕色-帶電，藍(lán)色-中性，黃色/綠色-接地。如果需要，這些導(dǎo)線應(yīng)通過(guò)適當(dāng)?shù)闹虚g干線額定接線板。
DC power is connected to the System 57 via the DC Input Card
terminal block TB1.
The DC Input Card provides diode isolation to permit the connection of
two separate power supplies. eg. A mains derived dc power supply
and battery backup dc supply. Note that current will be drawn from the
supply input with the highest voltage and in some circumstances
current will be shared between the two inputs. Each of the two inputs
have twin +24V and 0V terminals for easy through power connection
or paralleling of input sources.
A fused +24V output, which is the combination of both dc inputs, is
provided for powering ancillary devices.
Individually Powered Control Cards
Note: In individually powered control systems a DC connection is still
required to the DC Input Card in order to provide power to the
Engineering Card.
Individually powered control cards may be required where the local or
other regulations dictate individual connections in order to achieve the
highest integrity for power distribution.
Individual powering of a single channel control card is easily achieved
as follows:
(1) On the Single Channel Control Card, remove the link LK1 from
position 1 - 2 and refit in position 2 - 3 as shown below:
IMPORTANT
The individual power supply to the control card must be fused
externally by a 1A fuse
Note: On older versions of the single channel control card the Link LK1
was not fitted. In this case the yellow disk fuse FS1 must be
physically removed from the card.
(2) Wire the +24V DC power supply to the respective field or Relay
Interface Card terminals 35 (+24V) and 36 (0V) as shown above.
AC TO DC POWER SUPPLY UNIT CONNECTIONS
WARNING
The AC to DC Power Supply Unit must be earthed.
The input supply to the AC to DC Power Supply Unit may be:
a. an ac supply of 85V to 264V at 47Hz to 440Hz.
b. a dc supply of 110V to 340V (Refer to Zellweger Analytics for
information on dc supplies).
The supply must be fused at 6A maximum at the supply source. eg. At
the distribution panel. Where additional cabling is used this must be
mains rated for a minimum of 6A.
Two cables emerge from the rear of the AC to DC Power Supply Unit:
a. AC Input
The ac supply cable connections are colour coded BROWN - LIVE,
BLUE - NEUTRAL and YELLOW/GREEN - EARTH. If necessary,
these wires should be connected to the ac supply via a suitable
intermediate mains rated terminal block.
