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9.8. Indications and alarms
The sensors of the ILI SIL 2 / PL d series can have two different electrical output: analog amplified (0,5..10,5 V o 4..20 mA) or a relay
output.
IO-Link communication cannot be considered a safety channel, even if:
• it gives indication and events through process data and diagnostic, related to the status and failures of the device
• parameterization through IO-Link can affect safety function; safety relevant parameter changes are allowed only according to
procedures described at paragraphs 7.7 - 7.12
In Figure 13 are shown the significant value of the outputs in case of analog signal:
0
Table 13
TABLE VALUES OUTPUTS
A.L. = Alarm Low
L.L . = Low Limit
H.L. = High Limit
A.H. = Alarm High
In case of relay output, the relay is closed except when:
• a failure is detected
• the % of F.S. set as the alarm threshold has been exceeded
The failures, their effects on the output signal, on the relay output and how to reset are described at par. 7.4 (IO-Link parameterization
– diagnostics)
Note: Out of range values and relay opened signal must be handled by the downstream controller, which must take appropriate action.
32
NOMINAL RANGE
Zero
A.L.
L.L.
Figure 9
OUTPUT 4-20 mA
< 3,600 mA
= 3,68 mA
= 20,55 mA
> 21,000 mA
F.S.
A.H.
H.L.
OUTPUT 0,5-10,5 V
< 0,250 V
= 0,300 V
= 10,85 V
> 10,95 V
80618_MAN_IO-LINK IMPACT_12-2019_ENG
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