Monitoring of short-circuit/overload with EZ..-D.-T..
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MN05013005E
393
Monitoring of short-circuit/
overload with EZ..-D.-T..
Depending on the type of EZ in use, it is possible to use the
internal inputs I16, R15 and R16 to monitor for short-circuits
or overloads on an output.
• EZD:
– I16: Group fault signal for outputs Q1 to Q4.
• EZ620-D.-TE:
– R16: Group fault signal for outputs S1 to S4.
– R16: Group fault signal for outputs S5 to S8.
The following examples are for I16 = Q1 to Q4.
Example 1: Selecting an output with fault indication
Figure 192: Circuit diagram for fault output via I16
The above circuit diagram functions as follows:
If a transistor output reports a fault, M16 is set by I16. The
break contact of M16 switches off output Q1. M16 can be
cleared by resetting the EZD power supply.
Example 2: Output of operating state
Figure 193: Output of operating state
State
Outputs
I16, R15 or R16
No fault found
0 = switched off (make contact)
At least one output has a
fault
1 = switched on (make contact)
J
I16 can only be edited with EZD versions which have
transistor outputs.
I 01----m 16-------------------Ä Q 01
I 16--------------------------S M 16
I 01----m 16-------------------Ä Q 01
I 16---------------------------S M 16
M 16---------------------------Ä Q 04
