11 Troubleshooting
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11 Troubleshooting
Check KRN100 normal operation regularly.
1
When power ON, KRN100 does not
display anything on LCD screen and
operate.
Check power supply and power connector is
connected normally.
2 Displayed date and time is not correct.
KRN100 has date and time error within
±2min/year (Useable until in 2100). Set date
and time again.
3 Sensor input value is not right.
Check sensor input settings are correct in
INPUT SETUP.
Turn OFF the power of KRN100 and remove
input cards from KRN100 and check jumper
pin settings according to input specification.
4
KRN100 records former digital data not
current time’s.
Displaying record memory status icon (
or ) is the state of recording former
digital data.
Because there are lots of alarms and record
events or recorded data is accumulated due
to short memo period.
To cancel former data recording, pause and
re-start record.
Change the settings about record for proper
operation.
5
In graph mode, printout for line and letters
is not clear and spread.
Replace ink cartridge.
6
Recording paper’s terminal mark, red star
shape, is displayed.
Recording paper should be replaced.
Present recording paper lefts only 330mm
from terminal mark.
7
When power ON, after booting screen,
KRN100 does not change normal
operation screen.
SD card of inner KRN100 has problem.
Please contact our service center.
8 USB memory is not recognized.
USB memory’s file system supports only
FAT16 and FAT32. Format as FAT16 or
FAT32.
If partitions of an USB memory are divided,
KRN100 recognizes only first partition.
9
Cannot connect communication by
Ethernet.
Check communication line connection and
reset it as following ‘8.4 COMMUNICATION
SETUP (Communication setting)’.
10
Cannot connect communication by RS485
communication.
Check communication line’s A, B signal
polarity is connected correctly. Reset it as
following ‘8.4 COMMUNICATION SETUP
(Communication setting)’.
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