ABB BT50 Manuale - Pagina 5

Sfoglia online o scarica il pdf Manuale per Relè ABB BT50. ABB BT50 16. Safety relay / expansion relay

Overview

This manual contains information on using the safety relay in control circuits that are related to functional safety.

The BT50(T) is designed to connect safety devices, such as emergency stops, directly in the voltage supply circuit

to the relay. This relay can be used to expand the safety outputs of Pluto.

The relay has three NO safety outputs, one NC output (for monitoring purposes), a test input and complete internal

supervision.

In order for the safety outputs to close, the supply voltage, e. g. by means of an emergency stop button, must be

connected to A1 and A2 and the test input closed. After actuation of the relay the test input can be opened again.

The test input is intended to supervise that contactors or valves have deactivated before a new start can be

permitted. The test input can also be used for starting and the start button can be supervised. (See the connection

examples in section 4.)

Carefully read through this entire manual before using the device.

Warning!

The devices shall be installed by a trained electrician following the Safety regulations, standards

and the Machine directive.

Failure to comply with instructions, operation that is not in accordance with the use prescribed in

these instructions, improper installation or handling of the device can affect the safety of people

and the plant.

For installation and prescribed use of the product, the special notes in the instructions must be

carefully observed and the technical standards relevant to the application must be considered.

In case of failure to comply with the instructions or standards, especially when tampering with

and/or modifying the product, any liability is excluded.

2TLC172316M0201, rev E

2015-09-30