Phcbi MIR-154 Series, Руководство по эксплуатации

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46
ALARMS AND SAFETY FUNCTIONS
The unit has the alarms and safety function as shown in the table 1 below.
Table 1 Alarms and safety functions
Alarm Condition Display Buzzer
Remote
contact
Safety operation
Auto-set temp.
Alarm
When the chamber temp.
deviates from set temp. by
more than 2.5
o C. (±1.0
o
C~5.0
o
C changeable)
<Top screen>
The current chamber
temp. blinks. Intermittent
tone with
delay Alarm
status
with delay
――
Upper limit alarm
When the chamber temp.
is higher than the upper
limit temp.
―――
Continuous
tone Alarm
status Heater, fluorescent
lamp OFF
Lower limit alarm
When the chamber temp.
is lower than
the lower limit temp.
―――
Continuous
tone Alarm
status
Compressor OFF
Thermal fuse
When the chamber temp.
is over 70
o C
――― ―― ―
Main heater and
sub-heater OFF
Thermal sensor
abnormality
Input voltage is over 70 o C
corresponding
Input voltage is lower than
-50
o C corresponding
<Top screen>
“E01:Temp. sensor is
opened.”
“E02:Temp. sensor is
shorted.”
Intermittent
tone Alarm
status
Heater,
fluorescent lamp,
fan motor
and compressor OFF
Short-circuit of
SSR or
compressor relay
Microcomputer
determines
triac/compressor relay is
shorted
<Top screen>
“E04:SSR or comp.
relay is shorted.”
Intermittent
tone Alarm
status
――
Disconnection of
SSR The heater is not
energized
<Top screen>
“E05:SSR is
open-circuited.”
Intermittent
tone Alarm
status
――
Disconnection of
compressor relay The compressor relay is
not energized
<Top screen>
“E06:Comp. relay is
open-circuited.”
Intermittent
tone Alarm
status
――
Buzzer delay
Under condition of
Auto-set temp. Alarm
(delay time; changeable)
――― ―― ― ――
Back-up of
program
During power failure ――― ―― ―
Nonvolatile memory
Continuous running
after recovery from
power failure