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GRUNDIG NZP03 44209-750.03控制柜输入卡
所有电源上的状态指示灯四个LED位于电源面板的右上方。目的这些LED如下：压水堆顶部标有PWR的绿色LED指示灯指示电源。当电源具有正确的电源时，LED亮起并正常工作，当电源出现故障或电源不工作时关闭应用如果PLC运行正常，第二个绿色LED（标记为OK）将稳定亮起，并且如果PLC检测到问题，则关闭。
运行当PLC处于RUN模式时，标有RUN的第三个绿色LED稳定亮起。
BATT（电池）
如果内存备用电池电压为太低，无法在断电情况下保持内存；否则它保持关闭。如果此LED亮起，则必须在之前更换锂电池从机架上断开电源，或PLC内存可能丢失。
输入过压保护装置此信息适用于所有具有六个端子的90-30系列电源董事会。
该电源的过电压保护装置在内部连接至用户端子排上的针脚4。
该引脚通常连接到机架接地（引脚3）带有出厂时安装的跳线带。
如果过电压保护不是必需的，或者是上游提供的，可以通过删除从针脚3和4上跨接导线。
如果要对此电源进行高压测试，则必须在通过拆除接线条跳线带进行测试。
重新启用过电压保护通过重新安装皮带过电流保护装置（所有电源）进行测试后
5V逻辑输出被电子限制为3.5安培（大容量电源为7安培）。
内部感应到过载（包括短路），导致电源关闭。
电源将不断尝试重新启动，直到过载消除。
中的内部保险丝输入行作为备份提供。电源通常会在保险丝熔断之前关闭。保险丝还可防止内部电源故障。
时序图下面的时序图显示了直流输入与直流输出以及与电源设备生成的电源设备正常信号（PSOK）。首次通电时，PSOK信号错误。
+5V电压后，该线保持错误至少20毫秒总线在规格范围内，然后就变成了现实。
如果输入电源中断，+5V总线将保持在规格范围内，PSOK将保持真实至少10毫秒。然后PSOK变为false。+5V总线将保持不变至少4毫秒，以允许有序关闭系统。
串行端口连接器仅在安装在基板上的电源中起作用也包含CPU的。串行端口在安装在扩展或远程基板中。
连接到串行端口的任何设备，使用来自Series 90-30的+5 VDC电源计算最大功耗时必须包括电源（参见第12章中的标题“电源负载计算”）。
CPU串行端口信息电源上的串行端口连接器访问CPU串行端口，这是一项功能所有90-30系列CPU。有关此串行端口的信息，请参阅第5章“CPU”。
Status Indicator Lights on all Power Supplies
Four LEDs are located on the upper right front of the power supply faceplate. The purpose of
these LEDs is as follows:
PWR
The top green LED, labeled PWR, provides an indication of the operating state of the
power supply. The LED is ON when the power supply has a correct source of power
and is operating properly, and OFF when a power supply fault occurs or power is not
applied.
OK
The second green LED, labeled OK, is steady ON if the PLC is operating properly, and
OFF if a problem is detected by the PLC.
RUN
The third green LED, labeled RUN, is steady ON when the PLC is in the RUN mode.
BATT
The bottom red LED, labeled BATT, will be ON if the memory backup battery voltage
is too low to maintain the memory under a loss of power condition; otherwise it
remains OFF. If this LED is ON, the Lithium battery must be replaced before
removing power from the rack, or PLC memory may be lost.
Input Overvoltage Protection Devices
This information applies to all Series 90-30 power supplies that have six–terminal
boards. The overvoltage protection devices for this power supply are connected internally
to pin 4 on the user terminal strip. This pin is normally connected to frame ground (pin 3)
with the supplied jumper strap which is installed at the factory. If overvoltage protection
is not required or is supplied upstream, this feature can be disabled by removing the
jumper strap from pins 3 and 4.
If you want to Hi-pot test this supply, overvoltage protection must be disabled during
the test by removing the terminal strip jumper strap. Re-enable overvoltage protection
after testing by reinstalling the strap
Overcurrent Protection (all Supplies)
The 5V logic output is electronically limited to 3.5 amps (7 amps for high capacity supplies). An overload (including short circuits) is sensed internally and causes the supply to shut down. The supply will continually try to restart until the overload is removed. An internal fuse in the input line is provided as a backup. The supply will usually shut down before the fuse blows. The fuse also protects against internal supply faults. Timing Diagram The timing diagram below shows the relationship of the DC input to the DC outputs and to the Power Supply OK signal (PSOK) generated by the power supply. When power is first applied, the PSOK signal goes false. This line remains false for a minimum of 20 msec after the +5V bus is within specifications, then it becomes true. If input power is interrupted, the +5V bus will remain within specifications and PSOK will remain true a minimum of 10 milliseconds. PSOK then goes false. The +5V bus will remain within specifications for an additional 4 milliseconds minimum to allow an orderly shutdown of the system.
The serial port connector is only functional in a power supply that is installed in a baseplate that also contains the CPU. The serial port is not functional on a power supply that is installed in an expansion or remote baseplate. Any device connected to the serial port that uses +5 VDC power from the Series 90-30 power supply must be included in the calculation for maximum power consumption (see the heading “Power Supply Loading Calculations” in Chapter 12). CPU Serial Port Information The serial port connector on the power supply accesses the CPU serial port, which is a feature of all Series 90-30 CPUs. See Chapter 5, “CPUs” for infomation on this serial port.
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