




5X00290G01
与中央单元通信的设置如下图所示,可使用文件名MCTERM:INI存储该设置文件:
如果需要与中央单元通信,则稍后使用。
图20:与中央单元的通信设置
图21:与HMI的通信设置
上图显示了与HMI本地控制通信的设置
并且可以存储为例如RHMITERM.INI。
6.2.5连接电缆
下图显示了故障排除的设置。需要几根电缆
要链接PC和REF542plus:
REF 542plus开关间保护和控制单元
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COM1
COM2
神甫
RS232光纤
缆绳
RS232电缆
RS485电缆
HMI中央单元
图9:REF542plus的测试配置
6.2.5.1 RS232电缆
此标准串行通信电缆用于以下设备之间的通信:
PC和中央单元。为此,中央单元上的连接器为X72。
6.2.5.2 REF542plus光缆。
HMI必须通过ABB RS232光缆与PC连接。光学转换器必须插入HMI正面的连接器中。
通过使用此界面,可以从下载或上载配置文件
承载配置工具的本地PC连接到REF542plus中央单元。此外
即,保护和操作事件以及测量量的值
存储在REF542plus中的数据可以从本地PC上传,用于监控。
端子
光转换器
图22:ABB RS232-用于连接HMI的光缆
6.2.5.3 RS 485电缆
该电缆通常用于HMI作为本地控制单元之间的连接
以及LV隔间中的中央单元。此电缆已连接到连接器
中央单元上的X73。
6.3中央单元自检
通过自检,REF542plus中央单元的功能可以:
证明。
REF 542plus开关间保护和控制单元
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6.3.1冷启动后的行为
要查看冷启动后的行为,需要准备以下条件:
PC必须通过串行接口RS232连接到连接器X72。
Tera Term Pro软件正在运行并使用设置文件进行配置
MCTERM.INI。
相关电源电压必须连接到连接器-X10。
HMI本地控制单元不得连接到中央单元。
中央单元启动后,软件Tera Term Pro显示消息,如下图所示。
图10:Tera Term Pro显示的中央单元的正确启动顺序
软件
REF542plus在指示“系统运行”后再次运行。如果HMI
连接本地控制单元,然后在LCD屏幕上显示单线图和
将显示菜单。
REF 542plus开关间保护和控制单元
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6.3.2输入REF542plus自检
如果要执行自检,请在几秒钟内按PC键盘上的键
中央单元再次通电后的秒数。TeraTerm Pro软件将:
在电脑上显示以下信息:
图23:用于进入中央单元自检的Tera Term Pro显示屏
输入正确的密码,然后按“enter”。向当地ABB代表处的授权人员询问密码。在键入正确的密码之后,
将显示以下子菜单:
图24:输入正确密码后在Tera Term Pro窗口上显示
为了验证功能,可以执行以下测试:
REF 542plus开关间保护和控制单元
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6.3.2.1 RAM测试
按“r”
正在测试2兆字节RAM
测试结果显示在终端上
图11:RAM测试后的结果显示
6.3.2.2程序闪存测试
按“p”
正在测试16Mbit闪存。此测试将销毁上的实际应用程序固件
程序闪烁。之后必须通过“d”命令下载应用程序固件。
测试结果显示在终端上。
6.3.2.3配置闪存测试
按“c”
正在测试16Mbit闪存。此测试将破坏上的实际配置(如果有)
数据闪存。
测试结果显示在终端上
6.3.3模拟输入的校准
通常不需要校准REF542plus,因为
校准数据存储在模拟输入板本身的存储器中。但是如果例如。
移除或替换模拟输入板上的一个CT或VT,必须重新校准。
5X00290G01

5X00290G01
The setting for the communication with the Central Unit can be seen in the next figure, which can be stored e.g. using the file name MCTERM:INI: This setting file can
be used later, if a communication with the Central Unit is necessary.
Figure 20: Setting of the communication to the Central Unit
Figure 21: Setting of the communication to the HMI
The above figure shows the setting for the communication to the HMI Local Control
Unit and can be stored e.g. as RHMITERM.INI.
6.2.5 Connection cables
The next figure show the set up for trouble shooting. There are several cables needed
to link the PC and the REF542plus:
REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04 REF542plus: Installation and Commissioning 41 / 80
COM1
COM2
ABB
RS232-optical
cable
RS232 cable
RS485cable
HMI CENTRAL Unit
Figure 9: Test configuration of the REF542plus
6.2.5.1 RS232 cable
This standard serial communication cable is needed for the communication between
the PC and the Central Unit. The connector on the central unit for this purpose is X72.
6.2.5.2 REF542plus optical cable.
The HMI must be interfaced to a PC through the ABB RS232 optical cable. The optical converter must be plugged in the connector situated on the front side of the HMI.
By using this interface the configuration file can be downloaded or uploaded from the
local PC, which hosts the configuration tool, to the REF542plus central unit. Besides
that, protection and operation events and the value of the measurement quantities
stored in the REF542plus can be uploaded from the local PC for monitoring purpose.
D-sub
Opto converter
Figure 22: ABB RS232 - optical cable for the connection to the HMI
6.2.5.3 RS 485 Cable
This cable is normally used for the connection between the HMI as Local Control Unit
and the Central Unit in the LV compartment. This cable is connected to the connector
X73 on the Central Unit.
6.3 Self test of the Central Unit
By means of the self test the functionality of the REF542plus Central unit can be
proved.
REF 542plus switchbay protection and control unit
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6.3.1 Behavior after cold start
To see the behavior after cold start the following condition is to be prepared:
The PC must be connected via the serial interface RS232 to the connector X72.
The Tera Term Pro software is running and configured with the setting file
MCTERM.INI.
The related power supply voltage must be connected to connector -X10.
The HMI Local Control Unit must not be connected to the Central Unit.
After the central unit starts up, the software Tera Term Pro shows messages as displayed in the following figure.
Figure 10: Correct start up sequence of Central Unit displayed by Tera Term Pro
software
The REF542plus is after the indication “system running” in operation again. If the HMI
Local Control Unit is connected, then on the LCD screen the single line diagram and
the menu will be displayed.
REF 542plus switchbay protection and control unit
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6.3.2 Enter REF542plus self test
If a self test should be performed, press a key on the PC keyboard within a couple of
seconds after the Central Unit is powered on again. The TeraTerm Pro software will
display the following messages on the PC:
Figure 23: Tera Term Pro display for entering the self test of the Central Unit
Type the proper password and press ‘enter’. Ask for the password from the authorized personnel in your local ABB representative. After typing the correct password,
the following sub-menu will be shown:
Figure 24: Display on Tera Term Pro Window after entering the right password
To verify the functionality the following test can be performed:
REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
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6.3.2.1 RAM test
Press “r”
2 Mbyte RAM is being tested
Test result is shown on the terminal
Figure 11: Display of the result after RAM test
6.3.2.2 Program flash memory test
Press “p”
16 Mbit flash is being tested. This test will destroy the actual application firmware on
the program flash. Application firmware must be downloaded afterwards by “d” command.
Test result is shown on the terminal.
6.3.2.3 Configuration flash memory test
Press “c”
16 Mbit flash is being tested. This test will destroy the actual configuration (if any) on
the data flash.
Test result is shown on the terminal
6.3.3 Calibration of the Analog Input
The calibration of the REF542plus is normally not necessary, because the related
calibration data are stored in the memory of the analog input board itself. But if e.g.
one of the CT or VT on the analog input board is removed or substituted, a recalibration has to be done. For this reason the so called factory test mode must be
entered by typing f after enterinag the self test mode. After some seconds, a menu
with possible operations is shown on the PC terminal.The following commands are
available:
REF 542plus switchbay protect
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