Comissioning and Configuration
EP9214-0023 and EP9224-0023
46
Version: 2.3.1
4.4.2
Current limitation, switching the load circuits off
The switch-off behavior of the individual load circuits can be adapted to the application.
The following modes can be set individually for each channel:
• Very fast acting
• Fast acting
• Slow acting
• Time delay
Release time (switch-off time) of the modes
Rated current
Very fast acting
Fast acting
Slow acting
Time delay
100 %
1 h
-
-
-
110 %
1 h
4 h
-
-
120 %
7 min
4 h
-
-
150 %
30 s
30 min
1 h
4 h
210 %
500 ms
20 sec
20 s
100 s
275 %
500 ms
1 sec
20 s
10 s
300 %
20 ms
100 ms
1 s
3 s
The release time depends on the set rated current.
Following the switch-off of a channel it is necessary to reactivate it after rectification of the cause of the error.
Switch-off of the box due to overtemperature
The EP9214 is internally protected against overheating. A warning is given in the process data if a
temperature of about 80 °C is reached.
Fig. 46: Temperature Warning and Temperature Error bits
On reaching 85°C all load circuits are switched off in order to protect the hardware against destruction. In
this case the
Temperature Error
bit is set.
So that the permitted temperature is not exceeded, the box is to be mounted with its rear wall on the flattest
possible thermally conductive surface.
Switch off of the box due to undervoltage
Since undervoltage impairs the function of the safety mechanisms, a warning is given in the process data
from an input voltage of 21.5 V. If the voltage falls below 18 V all outputs are switched off and the
Error
bit is
set.