NU8976A99处理器模块,NU8976A99配置教程
端子5至46用于现场设备。每个终端接受一个AWG#14线（平均横截面2.1mm2），2 AWG#14（2.1mm2交叉截面）实心导线，或两个AWG#16（每个平均1.3mm2横截面）绞合线。任何电路都可以是输入或输出。连接场的一个端子设备连接到直流电源，另一个连接到模块（端子10-41）。所有输入/输出设备必须返回同一电源电路。根据布局和电流负载，正极和负极连接可以通过总线连接，并通过单线连接到块或电源。
NU8976A99处理器模块直流电源块的连接对于源块，将输出连接到电源的负极正极的电源和输入如果电路电源未与块电源同时断开，则
当激活多个输入时，模块可能通电，甚至尽管有一条腿的力量已经从街区中消失了。如果您想在不切断输入电源的情况下禁用块设备，使用块拉拔器拔下电子组件。不要断开H或N以断开电源。直流接收器块的连接对于接收器块，将输出连接到电源的正极和输入到负极。将直流电源连接到直流+端子（6-9）和直流回路-端子（42-46）直流汇接块，电源断开由于块功率与电路功率相同，因此接线很重要块电源断开，以便块电源和输入电源将同时删除。如图所示，找到电源断开装置在下面直流接收器块直流+负荷DC 否是注意安全如果电路电源未与块电源同时断当激活多个输入时，模块可能通电，甚至尽管有一条腿的力量已经从街区中消失了。如果您想在不切断输入电源的情况下禁用块设备，使用块拉拔器拔下电子组件。不要断开H或N以断开电源。
Terminals 5 to 46 are for field devices. Each terminal accepts one AWG
#14 wire (avg 2.1mm2 cross section), two AWG #14 (2.1mm2
cross
section) solid wires, or two AWG #16 (each avg 1.3mm2
in cross section)
stranded wires.
Any circuit can be an input or output. Connect one terminal of a field
device to DC power and the other to the block (terminals 10-41). All I/O
devices must return to the same power circuit.
Depending on layout and current loads, positive and negative
connections can be bussed and made by single wires to the block or
power source.
Connections for a DC Source Block
For a Source block, connect outputs to the negative side of the power
supply and inputs to the positive sideIf circuit power is not removed at the same time as block power, the
block may power up when multiple inputs are activated, even
though one leg of power has been removed from the block.
If you want to disable the block without removing power from input
devices, use a Block Puller to unplug the Electronics Assembly. Do not
disconnect H or N to remove power.Connections for a DC Sink Block
For a Sink block, connect outputs to the positive side of the power supply
and inputs to the negative side. Connect a DC source to the DC+
terminals (6-9) and the return to the DC- terminals (42-46)DC Sink Block, Power Disconnects
Since block power is the same as circuit power, it is important to wire
block power disconnects so that block power and input power will be
removed at the same time. Locate the power disconnect as shown
below. DC SINK
BLOCK
DC+
LOAD
DCNO YES
CAUTION
If circuit power is not removed at the same time as block power,
the block may power up when multiple inputs are activated, even
though one leg of power has been removed from the block.
If you want to disable the block without removing power from input
devices, use a Block Puller to unplug the Electronics Assembly. Do not
disconnect H or N to remove power.
