ABB 2TLA020054R0400 Original Instructions Manual - Page 5
Browse online or download pdf Original Instructions Manual for Control Unit ABB 2TLA020054R0400. ABB 2TLA020054R0400 16 pages. Bypassing unit
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Overview
General description
Tina 5A is designed for bypassing of safety devices connected to the Vital or Pluto dynamic safety circuit as well as
supervision of lamp indication.
Bypassing of safety devices such as a light grid or an interlocked gate is in some situations only allowed if status
information (bypassing active/inactive) is indicated. Tina 5A can therefore supervise an indication lamp (1-5 W)
connected across L1-L2, and the bypassing signal from Tina 5A is only sent if the indication lamp is working
properly. If no indication lamp is to be used across L1-L2 (e.g. if the status indication is performed by other means)
an 820
/ 2 W resistor must be connected across L1-L2. Whether indication is required depends on the specific
situation and result of risk analysis.
When the Tina 5A receives a dynamic signal to S1 and the bypass indication lamp (1-5W) is ON, a bypassing
output signal is provided on S2 and S3. A broken indication lamp, or a short circuit within it, leads to an interruption
of the bypass output signal on S2 and S3, therefore stopping the bypassing.
The dynamic signal to S1 on Tina 5A must be the input signal from the first of the safety devices intended to
bypass. The signal can be connected via output contacts from a safety relay, a safety timer or be initiated via a unit
providing the dynamic signal as for example an Eden or a Spot.
The dynamic output signal from S2 or S3 is to be connected to the output signal from the last safety device which is
to be bypassed.
Safety regulations
Warning!
Carefully read through this entire manual before using the device.
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.
2TLC172131M0201, rev. A
5
www.abb.com/lowvoltage
2011-09-20