Items To Be Checked First; Display - Omron K3NH Operation Manual

Display

7-1

Items to Be Checked First

7-2 Display
7-2-1 Flashing
7-2-2 Error Message
m1.err m2.err
m3.err
ad.err
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First, check the following three items if the K3NH has any problems during op-
eration.
1, 2, 3... 1. Power Supply
Be sure that power supplied to the K3NH is within the rated voltage range.
2. Wiring
Be sure that the K3NH is wired correctly.
3. Communications Conditions
If the model is a K3NH with the Communications Output Board, be sure that
the baud rate and unit numbers are correct.
After checking and remedying the above items, if the K3NH still has problems
during operation, check the error message.
The display will flash in the following cases.
• The input or process value is not within the display range.
If the display flashes the output status will be as follows:
Models with BCD Output Board: The OVER signal will be ON.
Models with Communications Output Board: The OVER or UNDER signal
will be ON and other output signals will be retained.
• The display will flash for three seconds if an attempt is made to change a set-
ting on the K3NH. Set to remote programming to accept key input.
The error condition can be checked with the error message.
The K3NH will have the following output statuses when an error message is dis-
played.
• HH, H, PASS, L, and LL will all be OFF.
• Linear output will be limited to the minimum value.
• The type of BCD output will be All Outputs OFF (H).
• The Unit error response will be returned from the model with a communications
function.
Memory Error
Meaning of Error
The internal memory has an error.
Remedy
Turn the K3NH off and on. If the memory error still exists, the K3NH will need to
be repaired. If the K3NH returns to normal operation, the K3NH may have been
affected by noise. Check if there is any source of noise generation near the
K3NH.
AD Converter Error
Meaning of Error
The internal circuit has an error.
Remedy
Turn the K3NH off and on. If the AD converter error still exists, the K3NH will
need to be repaired. If the K3NH returns to normal operation, the K3NH may
have been affected by noise. Check if there is any source of noise generation
near the K3NH.
Section 7-2