Mitsubishi Electric EcoMonitorPro EMU2-RD2-C-4W, Инструкция по эксплуатации

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Supplementation ----------------------------------------------------------------------------------------------------------------------------------------------------------------
•
Measuring parameters to be displayed on the display unit can be selected. For the details, see the instruction manual for each display
unit.
•
The measuring conditions of following item vary with the phase wire system.
Item Phase wire system Measuring condition
Single-phase 2-wire Total current = I
R
Single-phase 3-wire, 3-phase 3-wire Total current = (I
R
+ I
T
)/2
Total current
3-phase 4-wire Total current = (I
R
+ I
S
+ I
T
)/3
Single-phase 2-wire Total voltage = V
R-S
Single-phase 3-wire, 3-phase 3-wire Total voltage = (V
R-S
+ V
T-R
)/2
Total voltage
3-phase 4-wire Total voltage = (V
R-S
+ V
S-T
+ V
T-R
)/3
Single-phase 3-wire Larger value of I
R
or I
T
3-phase 3-wire Largest value of I
R
, I
S
and I
T
Maximum current
3-phase 4-wire Largest value of I
R
, I
S
, I
T
and I
N
Single-phase 3-wire Smaller value of I
R
or I
T
3-phase 3-wire Smallest value of I
R
, I
S
and I
T
Minimum current
3-phase 4-wire Smallest value of I
R
, I
S
and I
T
Single-phase 3-wire Larger value of V
R-S
or V
T-R
3-phase 3-wire Largest value of V
R-S
, V
S-T
and V
T-R
Maximum voltage
3-phase 4-wire Largest value of V
R-S
, V
S-T
and V
T-R
Single-phase 3-wire Smaller value of V
R-S
or V
T-R
3-phase 3-wire Smallest value of V
R-S
, V
S-T
and V
T-R
Minimum voltage
3-phase 4-wire Smallest value of V
R-S
, V
S-T
and V
T-R
10.2 Monitoring function
The parameters to be monitored are shown in the following table.
Monitoring item
Detail
Value upon
occurrence
Current demand
upper/lower limit alarm
Date and time of
occurrence
Value upon
occurrence
Voltage upper/lower limit
alarm
Date and time of
occurrence
Value upon
occurrence
Power demand upper/lower
limit alarm
Date and time of
occurrence
Value upon
occurrence
Power factor upper/lower
limit alarm
Date and time of
occurrence
Supplementation ----------------------------------------------------------------------------------------------------------------------------------------------------------------
•
This unit has only a function to monitor the conditions of occurrence of upper/lower limit alarms and the history of upper/lower limit
alarms (date and time of occurrence and values upon occurrence) on the display unit.
•
To monitor the current and electric power as instantaneous values, set the demand time limit to 0 second.
•
The upper and lower limits can be set only on the display unit. They cannot be set by CC-Link.
•
Each value upon occurrence and date and time of occurrence can be checked only on the display unit. They cannot be read by CC-Link.
On CC-Link, only the alarm status can be checked.