Functions
2.23 Auxiliary Functions
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
363
2.23.9 Commissioning Aids
Device data sent to a central or master computer system during test mode or commissioning can be influenced.
There are tools for testing the system interface and the binary inputs and outputs of the device.
Applications
• Test Mode
• Commissioning
2.23.9.1 Description
Test Messages to the SCADA Interface during Test Operation
If the device is connected to a central or main computer system via the SCADA interface, then the information
that is transmitted can be influenced.
Depending on the type of protocol, all messages and measured values transferred to the central control system
can be identified with an added message "test operation"-bit while the device is being tested on site (test
mode). This identification prevents the messages from being incorrectly interpreted as resulting from an actual
power system disturbance or event. As another option, all messages and measured values normally trans-
ferred via the system interface can be blocked during the testing ("block data transmission").
Data transmission block can be accomplished by controlling binary inputs, by using the operating panel on the
device, or with a PC and DIGSI via the operator interface.
The SIPROTEC 4 System Manual describes in detail how to activate and deactivate test mode and blocked
data transmission.
Checking the System Interface
If the device features a system interface and uses it to communicate with the control center, the DIGSI device
operation can be used to test if messages are transmitted correctly.
A dialog box shows the display texts of all messages which were allocated to the system interface in the con-
figuration matrix. In another column of the dialog box you can specify a value for the messages you intend to
test (e.g. ON/OFF). After having entered password no. 6 (for hardware test menus) a message can be gener-
ated. The corresponding message is issued and can be read out either from the event log of the SIPROTEC 4
device or from the substation control system.
The procedure is described in detail in Chapter "Mounting and Commissioning".
Checking the Binary Inputs and Outputs
The binary inputs, outputs, and LEDs of a SIPROTEC 4 device can be individually and precisely controlled in
DIGSI. This feature can be used, for example, to verify control wiring from the device to substation equipment
(operational checks), during start-up.
A dialog box shows all binary inputs and outputs as well as LEDs of the device with their present status. The
operating equipment, commands, or messages that are configured (masked) to the hardware components are
also displayed. After having entered password no. 6 (for hardware test menus), it is possible to switch to the
opposite status in another column of the dialog box. Thus, you can energize every single output relay to check
the wiring between protected device and the system without having to create the alarm allocated to it.
The procedure is described in detail in Chapter "Mounting and Commissioning".
www . ElectricalPartManuals . com
To Next Page
Loading...
Need help?
General