Troubleshooting By Unit - Omron GRT1 - 11-2007 Operation Manual

Troubleshooting by Unit

9-5 Troubleshooting by Unit
Model
All models except The TS indicator is not lit green. Refer to 9-2 LED Indicators and
System Units
I/O comments or Unit com-
ments cannot be set.
The Unit Maintenance Flag and
Connected Device Mainte-
nance Flag do not turn ON.
Note The Connected Device
One of the following values was
not held at its previous value
when the Unit's power was
turned ON gain.
All models except System
Units: Unit conduction time and
maintenance counter
Temperature Input Units: Tem-
perature range total time, top/
valley count, and cumulative
counter
Analog I/O Units: Cumulative
counter
All models except The maintenance counter
Analog I/O Units, returned to 0.
Temperature Input
Units, and System
Units
Parameters were edited or set,
but some functions were not
changed.
The output is turned ON, but
the maintenance counter does
not count the outputs.
Details
Maintenance Flag is
applicable to Units other
than Analog I/O Units
and Temperature Input
Units.
Probable cause
Error Processing.
An attempt has been made to set
comments with more than 32 char-
acters.
The Status Flags will be OFF (i.e.,
not executed) unconditionally if the
monitor value is 0.
Data is saved in the internal non-
volatile memory once every 12 min-
utes when the power is ON. The
data is stored when the mainte-
nance counter is saved, but if the
power supply is turned OFF without
saving, the value that was saved
internally the last time (maximum of
12 minutes before) will be read.
• The maintenance counter returns
to 0 when it is reset.
• The maintenance counter always
returns to 0 when switching is per-
formed between the Total ON
Time Monitor and Contact Opera-
tion Monitor.
The changes to the settings will be
enabled only when power supply is
turned OFF and ON again.
The I/O power supply is OFF.
Section 9-5
Remedy
---
Set comments with 32 char-
acters or less.
Set the monitor value to a
value other than 0.
Use the Save Maintenance
Counter function in the Con-
figurator maintenance data
before turning the power sup-
ply OFF.
---
Reset the Unit by turning the
power supply OFF and ON,
or pressing the Reset Button
in the Configurator.
Check whether the I/O power
supply is being supplied.
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