Correcting errors at counter value "2"
Value
of
byte1
Cause Eect Remedy
1 In the temperature measure‐
ment operating mode, an in‐
put voltage is too high. The
hardware may become dam‐
aged/destroyed as a result.
The "PNFault" LED is activated.
The outputs are switched
o.
1)
The value 0x80 is stored in
status byte 1.
It is essential that a Pt100 el‐
ement is connected to termi‐
nals 3-4 or 7-8.
The module must be restar‐
ted with Power ON following
elimination of the error.
2 Reserved - -
3 Overload at the outputs The "PNFault" LED is activated.
The outputs are switched
o.
1)
The value 0x80 is stored in
status byte 1.
Check the loads at the analog
output.
The module must be restar‐
ted with Power ON following
elimination of the error.
4 Incorrect operating mode se‐
lection, e.g. temperature
measurement at the analog
outputs.
Selection of the operating
mode is rejected.
If selected correctly, the mod‐
ule switches to cyclic opera‐
tion.
5 Internal error, system error The "PNFault" LED is activated.
The outputs are switched
o.
1)
The value 0x80 is stored in
status byte 1.
The rmware has detected a
system error, this status can
only be exited by means of a
switch-on / switch-o.
6 Overrange at the inputs Check input circuit and ad‐
just, if required.
7 Overrange at the outputs Correct the values in the user
program.
1)
The analog outputs retain their last output value.
12.2.5 Technical data
Table 12-35 Technical data of the I/O module
PP 72/48D PN PP 72/48D 2/2A PN
Safety
Degree of protection IP 00 according to EN 60529
Overvoltage category OVC II
Protection class III; DVC A, (PELV) acc. to EN 61800-5-1
Approvals CE, cULus, KCC, EAC
Electrical data
Input voltage 24 VDC + 20%/- 15%
Rated current 0.7A 0.8 A
Power consumption at rated load
(without digital outputs)
17 W 19 W
Connectable components
12.2PP 72/48D PN and PP 72/48D 2/2A PN
NCU 1750
142 Equipment Manual, 10/2023, A5E45627807B AH
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