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HOME ⊙ ABB ⊙ ABB REF 542plus relay protection device
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ABB REF 542plus relay protection device

来源: | 作者:FAN | 发布时间 :2025-05-13 | 508 次浏览: | Share:
Electronic Keys Sensor
The Electronic Keys Sensor recognizes electronic keys.
Two different electronic keys are provided. One key allows changing the parameters of the protection
functions.
The other one is used to change the control modes.
The two keys are labeLED “Protect” and “Control” to distinguish them.
When required, a general key to access both modes can be provided. It is also possible to program an 8-character custom code in the keys to increase the security levels or for any other specific reason.
This can be done easily with a program available on request.
Object Control
Object Control push buttons allow operating the primary objects.
Menu Navigation
Menu Navigation push buttons allow navigating through the REF 542plus menu.
Programmable LEDs
8 freely programmable, three-color LEDs are available for indications. There are 4 pages of these LEDs. The assignment of the LED to a specific condition is done with the Operating Tool.
PC interface
The PC interface to be used to connect REF 542plus with the PC can be the infrared (IrDa) serial or TCP/IP port. By using an appropriate cable and Operating Tool, the following actions are possible:
With the IrDa connection:
Downloading a configuration into the unit
Uploading the current configuration from the unit
Uploading the fault recorder
Uploading other information (measurements, binary inputs status, binary output status).

With Ethernet TCP/IP connections:

Downloading a configuration into the unit
Uploading the current configuration from the unit
Downloading a new firmware of the mainboard into the unit
Downloading a new firmware of the communication board into the unit
This green LED is turned on when the unit is operational. This LED is switched off when there is no power supply or when the unit is not operational.
Network Communication LED
This LED is meaningful only when the REF 542plus is equipped with a communication module and configured to use it.
When a communication module is detected inside the unit, the LED turns on to green.
If a communication module is not detected or fails, the LED turns from green to red.
When the unit is not configured for the communication, the LED is switched off.
Alarm LED

The alarm LED turns to red when user-defined alarms become true. 

Several arbitrary alarm conditions can be defined and configured with the operating tool.

Alarm conditions can be a trip of a protection function, loss of SF6 in the circuit breaker and so on. 

When this LED is on, it is not possible to close the circuit breaker or to download a new configuration.

The alarm condition has to be removed and the alarm must be acknowledged first.
Interlocking Error

The interlocking error LED is usually green. 

The LED turns temporarily to red when the user attempts an operation that would violate the programmed interlocking conditions, for example switching a disconnector with the circuit breaker in closed position.

Electronic Keys Sensor
The Electronic Keys Sensor recognizes electronic keys.
Two different electronic keys are provided. One key allows changing the parameters of the protection
functions.
The other one is used to change the control modes.
The two keys are labeLED “Protect” and “Control” to distinguish them.

When required, a general key to access both modes can be provided. 

It is also possible to program an 8-character custom code in the keys to increase the security levels or for any other specific reason.

This can be done easily with a program available on request.
Object Control
Object Control push buttons allow operating the primary objects.
Menu Navigation
Menu Navigation push buttons allow navigating through the REF 542plus menu.
Programmable LEDs

8 freely programmable, three-color LEDs are available for indications. 

There are 4 pages of these LEDs. The assignment of the LED to a specific condition is done with the Operating Tool.


PC interface

The PC interface to be used to connect REF 542plus with the PC can be the infrared (IrDa) serial or TCP/IP port. 

By using an appropriate cable and Operating Tool, the following actions are possible:

With the IrDa connection:
Downloading a configuration into the unit
Uploading the current configuration from the unit
Uploading the fault recorder
Uploading other information (measurements, binary inputs status, binary output
status).
With Ethernet TCP/IP connections:
Downloading a configuration into the unit
Uploading the current configuration from the unit
Downloading a new firmware of the mainboard into the unit
Downloading a new firmware of the communication board into the unit

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