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Beckhoff EL2904 User Manual
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Operation
EL2904
40
Version: 3.2.2
5.4.5
Entering a TwinSAFE address and parameters in the System
Manager
The FSoE address set at the DIP switch must also be entered under the
FSoE
tab (
FSoE Address
entry).
Fig.19: Entering the FSoE address
The EL2904 parameters are set under the respective TwinSAFE connection in the
Connection
and
Parameter
tabs.
Fig.20: Setting the connection of the TwinSAFE connection
39
41
Table of Contents
Table of contents
3
1 Notes on the documentation
5
1.1 Disclaimer
5
1.1.1 Trademarks
5
1.1.2 Patents
5
1.1.3 Limitation of liability
6
1.1.4 Copyright
6
1.2 Version numbers of the documentation
7
1.3 Staff qualification
8
1.4 Safety and instruction
9
1.5 Beckhoff Support and Service
10
2 For your safety
11
2.1 Duty of care
11
2.2 Safety image signs
12
2.3 General safety instructions
13
2.3.1 Before operation
13
2.3.2 During operation
13
2.3.3 After operation
13
3 System description
14
3.1 The Beckhoff Bus Terminal system
14
3.1.1 Bus Coupler
15
3.1.2 Bus Terminals
16
3.1.3 E-bus
16
3.1.4 Power contacts
16
3.2 TwinSAFE
16
3.2.1 The I/O construction kit is extended safely
16
3.2.2 Safety concept
17
3.2.3 EL1904, EL2904 - Bus Terminals with 4 fail-safe inputs or outputs
18
3.2.4 EL6900 - TwinSAFE logic terminal
18
3.2.5 The fail-safe principle (Fail Stop)
18
4 Product description
19
4.1 EL2904 – TwinSAFE terminal with 4 digital fail-safe outputs
19
4.2 Intended use
20
4.3 Technical data
22
4.4 Target failure measures
23
4.5 Dimensions
24
4.6 Block diagram of the EL2904
25
5 Operation
26
5.1 Environmental conditions
26
5.2 Installation
26
5.2.1 Safety instructions
26
5.2.2 Transport / storage
26
5.2.3 Electrical installation
26
5.2.3.1 Connections within a Bus Terminal block
26
5.2.3.2 Overvoltage protection
28
5.2.3.3 Wiring
28
5.2.3.4 EL2904 pin assignment
29
5.2.3.5 Signal cables
30
5.2.4 Mechanical installation
31
5.2.4.1 Control cabinet / terminal box
32
5.2.4.2 Installation position and minimum distances
32
5.2.4.3 Example configuration for temperature measurement
33
5.2.5 TwinSAFE reaction times
34
5.2.6 Tested EL2904 devices
35
5.3 Operation in potentially explosive atmospheres (ATEX)
36
5.3.1 Special conditions
36
5.3.2 Identification
36
5.3.3 Date code and serial number
37
5.3.4 Further ATEX documentation
37
5.4 Configuration of the terminal in TwinCAT
37
5.4.1 Inserting a Bus Coupler
37
5.4.2 Inserting a Bus Terminal
37
5.4.3 Inserting an EL2904
37
5.4.4 Address settings on TwinSAFE terminals with 1023 possible addresses
39
5.4.5 Entering a TwinSAFE address and parameters in the System Manager
40
5.5 Diagnostics
42
5.5.1 Diagnostic LEDs
42
5.5.2 Diagnostic objects
43
5.5.3 Possible causes of diagnostic messages
44
6 Lifetime
46
7 Maintenance and cleaning
47
7.1 Disassembly
47
8 Decommissioning
49
8.1 Disposal
49
8.1.1 Returning to the vendor
49
9 Appendix
50
9.1 Volatility
50
9.2 Focus of certificates
51
List of illustrations
52
4
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Beckhoff EL2904 Specifications
General
Brand
Beckhoff
Model
EL2904
Category
Touch terminals
Language
English
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