IS200TREAH2AED燃机卡件,IS200TREAH2AED使用说明
电子单元在用于壁装的外壳中交付。选择安装位置时，请确保有足够的空间打开完全关闭外壳盖。还要检查机柜前面是否有足够的工作空间。外壳配有13个电缆密封套。接地PFEA113-20的金属底部连接到作为张紧电子接地连接器。这是为了确保内部逻辑和EMI抗扰度以及电子设备的射频发射。DIN导轨必须与机柜的PE（保护接地）良好连接。
IS200TREAH2AED燃机卡件为了达到最佳的耐腐蚀性，DIN导轨应镀铬，以便例如，经过黄铬处理。将星形垫圈与用于将导轨固定至安装板的每个螺钉一起使用。为了将DIN导轨固定到安装板上，最小螺钉直径为5 mm，并且螺钉之间的最大距离为100 mm。为了无故障运行，必须正确接地。注意以下几点：?如果自由（未屏蔽）长度超过0.1 m（4 in.）单个电源对信号导体必须单独绞合?外部保护接地（PE）电缆必须连接到一个接地棒螺钉上夹具。?所有电缆屏蔽必须连接到接地棒和屏蔽长度连接必须小于50毫米（2英寸）。注释电缆屏蔽层必须仅在一端接地。?由于测量系统的信号接地连接到张力电子装置是连接到控制系统的高级系统的输入不得接地。将测量系统和实现最佳功能的优越系统如图2-6和图2-7所示。The electronic unit is delivered in an enclosure intended for wall mounting.
When choosing a place for installation, make sure that there is enough space to open the
enclosure lid fully. Also check that there is enough working space in front of the enclosure.
The enclosure is fitted with 13 cable glands.Earthing
The metal bottom of PFEA113-20 connects to the metallic DIN-rail which serves as the
Tension Electronics earth connector.
This is to ensure a good earth connection both for internal logic and for the EMI immunity and
RF emission of the electronics.
The DIN-rail must have a good connection to the PE (Protective Earth) of the cabinet.
To achieve the best possible corrosion resistance, DIN-rails should be chromium plated, for
instance, yellow chromium treated. Use star washers with each screw used to fasten the DINrail to the mounting plate.
To fasten the DIN-rail onto the mounting plate, the minimum screw diameter is 5 mm and the
maximum distance between screws is 100 mm.For trouble free operation, the earthing must be properly done. Note the following:
? If the free (unscreened) length exceeds 0.1 m (4 in.) the individual pairs of power
and signal conductors must be twisted separately
? The external protective earth (PE) cable must be attached to one of the earthbar screw
clamps.
? All the cable screens have to be connected to the earth bar and the length of the screen
connection must be less than 50 mm (2 in.).
NOTE
The cable screens must be earthed at one end only.
? Since the signal earth of the measurement system is connected to the chassis earth of
the tension electronics, the input of a superior system connected to the control system
must not be earthed. The best ways of interconnecting the measurement system and a
superior system to achieve optimal function are shown in Figure 2-6 and Figure 2-7.
