Maintenance; Service Life - Beckhoff EL72 1-901 Series Manual

Integrated safety
Manufacturer data for interface type C – Senke
Parameter
Class
Test pulse duration t
i
Test pulse interval T
Input resistance R
Input capacitance C
L
The Testing parameter can be switched on in conjunction with the EL2904.
6.3

Maintenance

Maintenance
The TwinSAFE components are maintenance-free!
Environmental conditions
Observe the specified environmental conditions!
Please ensure that the TwinSAFE components are only stored and operated under the specified conditions
(see technical data).
If the TwinSAFE component is operated outside the permitted temperature range it will switch to Global
Shutdown state.
Cleaning
Protect the TwinSAFE component from unacceptable soling during operation and storage!
If the TwinSAFE component was subjected to unacceptable soiling it may no longer be operated!
Have soiled terminals checked!
Cleaning of the TwinSAFE component by the user is not permitted!
Please send soiled terminals to the manufacturer for inspection and cleaning!
6.4

Service life

The TwinSAFE terminals are designed for a service life of 20 years.
Due to the high diagnostic coverage within the lifecycle no special proof tests are required.
The TwinSAFE terminals bear a date code, which is composed as follows:
Date code: CW YY SW HW
186
min.
-
10 ms
4.7 kΩ
-
WARNING
WARNING
Version: 1.9
typically
2.3
-
-
-
-
max.
500 µs
-
-
1.21 µF
EL72x1-901x