Control Specifications - Panasonic MDF-DU702VH Service Manual

Control specifications

Item
Temperature controller
Temperature sensor
Temperature display
High / Low
temp. alarm
Door alarm
Alarms
Fan lock alarm
Power failure
Filter alarm
Remote alarm
Parts
Battery age
replace-
ment
notificati-
Fan motor age
on
Ambient
temperature
abnormality
Supply voltage
Status
drop
High-load
operation
display
Self-diagnosis function
Compressor protection
Key lock
MDF-DU502VH
Microprocessor control system： LCD touch panel input
Settable range : -90 ℃～-50 ℃ (unit:1 ℃)
Memorized by Non-volatile memory
Platinum resistance (Type: PT 1000 Ω )
WVGA full color LCD
Digital display (Unit: 1 ℃)
SV±5 ℃～±40 ℃, changeable (default:±10 ℃)
When the chamber temperature exceeds the alarm set temperature,
"Alarm" is displayed alternately in normal characters and reverse video
in the alarm display field and chamber temperature blinks. After 15 min.
(0-15 min. changeable, default: 15℃), "Warning" is displayed in the
message display field, buzzer beeps and remote alarm activates and
chamber temperature blinks.
When the door opens, "Open" is displayed alternately in normal
characters and reverse video in the alarm display field. After 2 min.
(0-15 min. changeable), buzzer beeps, no remote alarm activates.
No detection function.
"Warning" is displayed alternately in normal characters and reverse
video in the alarm display field. And the notification is displayed in the
message display field. Buzzer beeps and the remote alarm activates.
Filter alarm indicator is lit when the excessive dust is accumulated on
the condenser filter. When this indicator is lit, clean the condenser filter.
Remote alarm terminal 3P; contact capacity DC 30 V, 2 A (Max)
Remote alarm activates when temp. alarm or power failure occur.
Two type of battery accumulation time display in service mode. At
replacement time, it is informed in the message display field.
Fan motor accumulation time display in service mode. Replacement
notification is not performed.
When the sensor is out of the range of 35 ℃ from 0 ℃ , the
notification display in the message display field.
No detection function.
When low side compressor operation rate is over 95 %, the notification
display in the message display field.
When a sensor is failed, the notification display in the message display
field. Buzzer beeps and remote alarm activates.
Overload relay (internal)
Detected value of filter sensor is 50 ℃ or more.
"Warning" is displayed alternately in normal characters and reverse
video in the alarm display field and the notification is displayed in the
message display field. Buzzer beeps and remote alarm activates.
Selection of ON or OFF by slide in Key Lock mode.
OFF: Unlocked ON: Locked
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MDF-DU702VH