Hitachi NEXT Series Instruction Manual page 23

Operation Data Display
5
Records date/time, pressure, current, temperature and
load status at that time as operating state recorded by
data measurement time. Up to 12 times can be recorded,
after which the oldest data is deleted one at a time; the
latest data is displayed for item 1. The screen shows
record for 2 times, and the necessary data can be con-
firmed by button operation. If altered before
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time is up, the data prior to change is maintained, and the
time recorded as soon as the data is altered changes.
1. and 2. - :Indicates the MONTH / DAY HOUR: MINUTE.
P - Represents a pressure (psi) and indicates, from left to
right, the: Discharge air pressure, pressure data.
C - Current (A).
T - Represents a temperature (℉) and indicates from
left to right: 1st stage discharge air temperature, 2nd
stage discharge air temperature.
L - Represents a load ratio percentage (%). and out put (kW).
If there is no data, an asterisk is displayed.
Load Data Display
6
This display shows the averaged load data per day. Data
can be recorded for a maximum of six days; the 7th day of
averaged loaded data is automatically deleted and the 1st
or most recent day of averaged data is added. The most
recent data is arranged at the top of the display.
The screen shows record for 2 times, and the necessary
data can be confirmed by
Data is averaged from operation start to stop. The aver-
age is however fixed at 0.00 minutes in the case of 24
hours operation.
3. OPERATING THE DSP [How to Use the Liquid Crystal Display (LCD)]
button operation.
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Alarm History
7
If an alarm occurs on the digital monitor, shutdown histo-
ry is recorded. Up to 6 items of alarm history however
can be recorded aside from shutdown history. Contents
and occurrence state can be confirmed.
① Operation state is indicated by a symbol next to the
shutdown code.
L: Load, U: Unload, S: Stop
Displays alarm contents and code, date, time, state and
how many times alarm occurred. If the same alarm con-
tinues to occur, it is overwritten as update data, and the
number of times the alarm occurs is updated. The latest
warning is recorded as item 1. If there is no alarm, aster-
isks are displayed. The screen displays data for 3 types,
and the necessary data can be confirmed by
button operation.
Shutdown History Display
8
Up to 6 items of alarm history are recorded aside from
shutdown history. Contents and occurrence state can be
confirmed. Select the number of the shutdown on the
SHUTDOWN HISTORY screen, press the SET button
and the operation state when the shutdown occurred can
furthermore be confirmed on the details screen.
● How to clear shutdown and alarm history.
If you want to clear the entire shutdown history and
alarm history, set F041 from the F mode of the digital
monitor to "1: CLEAR HISTORY" while referring to
the instructions manual of the compressor.
①
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