Endress+Hauser IO-Link Ceraphant PTC31B Operating Instructions Manual page 81

Ceraphant PTC31B, PTP31B, PTP33B IO-Link
Endress+Hauser
R
L max
[ ] W
1022
587
152
0
1 Power supply 10 to 30 V DC
2 R maximum load resistance
Lmax
U Supply voltage
B
If load is too great:
• failure current is output and "S803" displayed (output: MIN alarm current)
• Periodic checking to establish if it is possible to quit fault state
• In order to guarantee sufficient terminal voltage, a maximum load resistance RL
(including line resistance) must not be exceeded depending on the supply voltage UB of
the supply unit.
17.2.6 Signal on alarm 4 to 20 mA
The response of the output to error is regulated in accordance with NAMUR NE43.
The behavior of the current output in the event of faults is defined in the following
parameters:
• Alarm current FCU "MIN": Lower alarm current (≤3.6 mA) (optional, see the following
table)→  62
• Alarm current FCU "MAX" (factory setting): Upper alarm current (≥21 mA)→  62
• Alarm current FCU "HLD" (HOLD) (optional, see the following table): Last measured
current value is held. When the device starts, the current output is set to "Lower alarm
current" (≤3.6 mA). →  62
• The selected alarm current is used for all errors.
• Errors and warning messages are displayed via IO-Link.
• Errors and warning messages are displayed only on the primary value page
(topmost display level) and are not displayed in the operating menu.
• In the operating menu the error is only indicated by the color of the display
background.
• The status LED always indicates an error.
• It is not possible to acknowledge errors and warnings. The relevant message
disappears if the event is no longer pending.
• The failsafe mode can be changed directly when a device is running (see the
following table).
Changing the failsafe mode
from MAX to MIN
from MIN to MAX
from HLD (HOLD) to MAX
from HLD (HOLD) to MIN
from MIN to HLD (HOLD)
from MAX to HLD (HOLD)
2
U
10 20 30
B
[V]
1
After confirming with 
active immediately
active immediately
active immediately
active immediately
active outside the fault state
active outside the fault state
Technical data
U 6.5V
-
R
L max £ B
23mA
A0031107
81