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6 Internal
6.3 Monitoring of the functionality of the basic unit
192
Operating instructions
05/10 MN05013003Z-EN
www.eaton.com
6.3 Monitoring of the functionality of the basic unit
easy continuously checks its functionality by means of a system test and by
means of various timeout watchdogs.
Table 34:
Times of the timeout watchdogs
6.4 Monitoring of short-circuit/overload with EASY..-D.-T..
Depending on the type of easy in use, it is possible to use the internal inputs
I15 and I16, R15, R16 to monitor for short-circuits or overloads on an output.
•
EASY512-…-T…:
I16 = Group fault alarm for outputs Q1 to Q4.
•
EASY721.-..-T..:
•
I16 = Group fault alarm for outputs Q1 to Q4.
•
I15 = Group fault signal for outputs Q5 to Q8.
•
EASY620-D.-TE:
•
R16 = Group fault alarm for outputs S1 to S4.
•
R15 = Group fault signal for outputs S5 to S8.
Table 35:
Status of error outputs
The following examples are for I16 = Q1 to Q4. I15 indicates in the same
way short-circuits and overloads on Q5 to Q8.
6.4.0.1 Example 1: Output with fault indication
The circuit diagram functions as follows:
If a transistor output indicates a fault, M16 is set by I16. The N/C contact of
M16 switches off the output Q1. M16 can be cleared by resetting the easy
supply voltage.
6.4.0.2 Example 2: Output of operating state
The circuit functions as described in Example 1. An additional feature is that
when an overload is detected, the indicator light at Q4 is actuated. If Q4 has
an overload, it would 'pulse'.
Timeout Watchdog for monitoring
Specified Response time [s]
Program processing
1
Program Download
1
Communication via the serial multi-function interface
3
State of outputs
Status I15 or I16, R15 or R16
No fault present
0 = switched off (N/O contact)
Fault present on at least one output
1 = Switched on (N/O contact)
I1-
M16
---
Ä
Q1
I16------SM16
I1-
M16
---
Ä
Q1
I16------SM16
M16------
Ä
Q4
Содержание easy500, easy700
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