3BSE032402R1工控电路卡件
直流电源通过直流输入卡连接到系统57接线盒TB1。
直流输入卡提供二极管隔离，以允许连接：两个独立的电源。例如市电衍生直流电源以及电池备用直流电源。请注意，电流将从提供最高电压输入，在某些情况下
电流将在两个输入之间共享。两个输入中的每一个具有双+24V和0V端子，便于通过电源连接或输入源的并联。带保险丝的+24V输出是两个直流输入的组合，为用于为辅助设备供电。
独立供电控制卡
注：在单独供电的控制系统中，直流连接仍为为直流输入卡提供电源所需工程卡。
如果本地或其他法规要求单独连接，以实现配电的最高完整性。单通道控制卡的单独供电很容易实现
如下：（1） 在单通道控制卡上，从位置1-2，然后重新安装到位置2-3，如下所示：
重要的控制卡的单独电源必须熔断外部通过1A保险丝
注：在旧版本的单通道控制卡上，链路LK1未安装。在这种情况下，黄色盘保险丝FS1必须：从卡上物理移除。（2） 将+24V直流电源连接至相应的现场或继电器接口卡端子35（+24V）和36（0V），如上所示。
交流至直流电源装置连接警告
交流至直流电源装置必须接地。
AC至DC电源单元的输入电源可以是：
a、 85V至264V的交流电源，频率为47Hz至440Hz。
b、 110V至340V的直流电源（请参阅Zellweger Analytics关于dc电源的信息）。
电源必须在电源处最大熔断6A。在配电盘。如果使用其他电缆，则必须：额定电源至少为6A。
两条电缆从交流至直流电源装置的后部引出：
a、 交流输入
交流电源电缆连接采用颜色编码棕色-带电，蓝色-中性，黄色/绿色-接地。如果需要，这些导线应通过适当的中间干线额定接线板。
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.
