Hitachi NEXT Series Instruction Manual page 16

3. OPERATING THE DSP [How to Use the Liquid Crystal Display (LCD)]
3.3.2 Typical Monitoring Displays
When the DSP is operating normally, typical monitoring
displays appear as follows.
M1 Monitoring Display
M2 Monitoring Display
IMPORTANT
Current is an approximate S-phase ampere.
Output is reference value of calculated power.
(1) Displays current time. Asterisk flashes.
(2) Indicates a capacity control type.
(3) Displays compressor discharge port pressure.
(4) Indicates total running hours (RUN HOUR), total
loaded hours (LOAD HOUR), and total number of
loads (LOAD TIMES.).
Blink asterisk indicates running time is being mea-
sured.
(5) Indicates a percentage of load to unload of the DSP air
compressor (LOAD RATE), For Vtype, the rate is cal-
culated based on only frequency. Indicates "＊＊＊",
if PQ wide mode is selected.
14
VSDA ＊ SAVE
（1）
（2）
（3）
（4）
（5）
（6）
（7）
（8）
（9）
INTE ：Fixed speed type control (load/unload operation)
AUTO ： F ixed speed type control
(AUTO operation ＊optional)
VSDB ：V type control (AUTO function off)
VSDA ： V type control (with AUTO function, V type standard)
EXIT ： S etting display when capacity control is executed
externally
（10）
MR ： Multiple unit control connection by communication
control
（11）
(6) Indicates the amperage current of the main motor
(CURRENT).
(7) Displays an operating frequency of main motor.
(V type only. Fixed speed type displays ＊＊．＊)
(8) Indicates "＊＊＊" for this air compressor.
(9) Displays master or slave control status when in lead/
lag operation mode.
(10) Displays various pressures and temperatures.
(Asterisk indicates not in use.)
(11) Displays time remaining till next inspection as main-
tenance period and next maintenance period.
ECOMODE
(Energy Conservation Mode)
"SAVE" is displayed on the monitor
screen.
Displayed when stop is limited for AUTO opera-
tion (standard: no symbol).