Endress+Hauser Ceraphant PTP31B - Page 71

Ceraphant PTP31B, PTP33B Technical data
Endress+Hauser 71
[ ]W
20 30
10
0
1022
587
152
U
[V]
1
2
R
R
L
L
max
max
£
-U 6.5V
23mA
B
B
A0031107
1 Power supply 10 to 30 V DC
2 R
Lmax
maximum load resistance
U
B
Supply voltage
When excessively high load:
• Output of the fault current and display of " S803 "
• Periodic review whether error condition may be left
15.2.6 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 case of fault is defined by the following parameters:
• FCU "MIN": Lower alarm current (≤3.6 mA) (optional, see the following table)→  58
• FCU "MAX" (factory setting): Upper alarm current (≥21 mA) →  58
• FCU "HLD" (HOLD): Last measured current value is held. When the device starts, the
current output is set to "Lower alarm current" (≤3.6 mA). →  58
• The selected alarm current is used for all errors.
• 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 After confirming with 
from MAX to MIN active immediately
from MIN to MAX active immediately
from HLD (HOLD) to MAX active immediately
from HLD (HOLD) to MIN active immediately
from MIN to HLD (HOLD) outside the error condition active
from MAX to HLD (HOLD) outside the error condition active