Behavior Of The Device In The Event Of A Fault; Signal On Alarm 4 To 20 Ma - Endress+Hauser IO-Link Ceraphant PTC31B Operating Instructions Manual

Ceraphant PTC31B, PTP31B, PTP33B IO-Link
Status Diagnostic
signal/ behavior EventQualifier
Diagnostic
event
S803 Fault IO-Link Error
F804 Fault IO-Link Error
F804 Fault IO-Link Error
S971 Warning IO-Link Warning 0x1811
1) The switch output is open and the current output adopts the configured alarm current. Errors concerning the switch output are not displayed
because the switch output is in a safe state.
2) If no remedial measures are taken, the warning messages are displayed following a device restart if configuration (span, switch points and offset)
is performed with a gauge pressure device and readings are > URL + 10 % or < LRL + 5 % and with an absolute pressure device and readings are >
URL + 10% or < LRL.
3) EventCode as per IO-Link standard 1.1
Endress+Hauser
IO-Link EventCode
0x1804 Current loop
0x1808 Overload at switch
output 1 or 2
0x1808 Overload at switch
output 1 or 2
Measured value is
outside sensor
range
10.3

Behavior of the device in the event of a fault

The device displays warnings and faults via I/O-Link. All the device warnings and faults
are for information purposes only and do not have a safety function. The errors diagnosed
by the device are displayed via IO-Link in accordance with NE107. In accordance with the
diagnostic message, the device behaves as per a warning or fault condition. It is necessary
to distinguish between the following types of errors here:
• Warning:
– The device continues measuring if this type of error occurs. The output signal is not
affected (exception: simulation is active).
– The local display alternates between the warning and the main measured value.
– The switch outputs remain in the state defined by the switch points.
– The status LED flashes red (not for IO-Link).
– The background remains white in the event of a warning
• Fault:
– The device does not continue measuring if this type of error occurs. The output signal
adopts its fault state (value in the event of an error - see the following section).
– The fault state is displayed via IO-Link.
– The fault state is indicated on the local display.
– The switch outputs assume the "opened" state.
– For the analog output option, an error is signaled with the configured alarm current
behavior.
10.4

Signal on alarm 4 to 20 mA

The response of the output to error is regulated in accordance with NAMUR NE43.
Event text Cause
Impedance of load
resistance at analog output
is too high
Load current too high
Switch output defective
The current is outside the
permitted range 3.8 to
20.5 mA.
The present pressure value
is outside the configured
measuring range (but
within the sensor range, if
applicable).
Diagnostics and troubleshooting
Corrective measure
• Check the cabling and load at the
current output.
• If the current output is not
required, switch the current
output off via the configuration.
• Connect current output with load.
• If the current output is not
required, switch the current
output off via the configuration.
• Increase load resistance at switch
output
• Check output wiring
Replace device
Operate the device within the set
span
47