- 28 -
6-16. Status (DO) Output
This instrument has four status output as optional function (open collector output) points.
6-17. Auto Return Function
Should there be no key operation for 3 minutes on each screen except the monitoring screens (adjustment output, remaining
time of step, the number of pattern executions, PID No.), the display returns automatically to the 0-0 basic screen of screen
group 0 (auto return).
6-18. Notes on RAM as Communication Memory Mode
In case RAM is selected on the 5-42 communication memory mode, all set data are written in RAM. Care should be taken as
this causes nonconformity of set data in a pattern like the following:
On the assumption that input range is 05 (K 0.0 - 800.0 ˚C),
An event code is changed from higher limit deviation value to higher limit absolute value through communication (this
change is recorded in RAM).
Communication mode is changed from COM to LOC.
Event action point setting is changed from 800.0 to 700.0 by key operation. (Being in LOC mode, this change is recorded
in EEPROM).
Power supply is interrupted and power is applied again.
The event code recorded in RAM is cleared and higher limit deviation value is read from EEPROM.
Since the event action point set as 700.0 has been written in EEPROM, 700.0 is read.
Consequently, although the setting range of higher limit deviation value is actually
-
1999
–
2000 digits, an impossible value
of 7000 digits is set.
To ensure proper use of the instrument, correct data must be set again.
7. Error Codes, Causes and Remedies
Screen display
Problem
Cause
Remedy
(HHHH)
Higher limit side scaleover
Break of thermocouple
input wiring
Break of R.T.D. input A
wiring
Input measured value
exceeded higher limit of
measuring range by more
than 10%.
Check thermocouple input wiring. If wiring
has no problem, check and replace
thermocouple.
Check wire connection to R.T.D. terminal A. If
wiring has no problem, replace R.T.D.
For voltage or current input, check the
transmitting unit of measured values. Check if
set code of measuring range is the same as
that of input signal.
(LLLL)
Lower limit side scaleover
Problem with wiring
connection for input signal
Input measured value fell
from lower limit of
measuring range by 10%
Nonconformity of input
range with input signal
Check wire connection for input signal.
Check wiring of inversed polarity or break of
wiring for measured value input.
Check input range and input signal.
(b - - -)
Break of R.T.D. input
wiring
Break of B
More than one break of A,
B and B
Check R.T.D. input terminals A, A and B for
breaks. If wiring has no problem, check and
replace R.T.D.
}
(CJHH)
Higher limit side scaleover
of cold junction (CJ) of
thermocouple input
Ambient temperature of
FP93 has exceeded 80°C.
Reduce ambient temperature to the level
provided in the environment conditions.
In case ambient temperature has not
exceeded 80°C, examine the instrument.
}
(CJLL)
Lower limit side scaleover
of cold junction (CJ) of
thermocouple input
Ambient temperature of
instrument has fallen to
–20 °C or lower.
Raise ambient temperature to the level
provided in the environment conditions.
In case ambient temperature has not fallen
to –20
°C, examine the instrument.
Note:
When you find something wrong with the instrument, please re-read the instruction manual
and examine the instrument again. For any problem with the product or further information,
please contact our sales agent.
