Restrictions On Measuring Data - Mitsubishi Electric EcoMonitorPro EMU2-RD3-F Instruction Manual

Energy measuring unit
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Primary voltage setting (V)
W, var
: 3rd decimal place
Wh, varh : 2nd decimal place
W, var
: 2nd decimal place
Wh, varh : 1st decimal place
W, var
: 1st decimal place
Wh, varh : Integer
W, var
: Integer
Wh, varh : x10
W, var
Wh, varh : x100

10.5 Restrictions on measuring data

For some seconds (about 10 seconds) just after power is applied to this unit, measurement and communication cannot be made.
For some seconds just after ratings of this unit are set or changed, measurement and communication cannot be made.
During measurement, the unit operates as shown below.
Measuring
parameter
Current
When the input current is less than 0.5% of the rated current, 0 A is displayed.
Demand current
When the input current exceeds 140% of the rated current, 140% is displayed as a fixed
value.
Voltage
In the case of 220 V direct setting:
When the input voltage to this unit is less than 30 V, 0 V is displayed.
When the input voltage to this unit exceeds 315 V, 315 V is displayed as a fixed value.
In the case of other setting
When the input voltage to this unit is less than 15 V, 0 V is displayed.
When the input voltage to this unit exceeds 157.5 V, 157.5 V is displayed as a fixed value.
Electric power
When the displayed value of voltage is 0 V or the displayed value of current is 0 A, 0 kW and
Reactive power
0 kvar are displayed.
When the full-load power is less than 0.4%, 0 kW and 0 kvar are displayed.
When the full-load power exceeds 140%, 140% is displayed as a fixed value.
Power factor
When the displayed value of voltage is 0 V or the displayed value of current is 0 A, 1.000 is
displayed.
Frequency
Voltage condition
In the case of 220 V direct setting
When the input voltage to this unit is 160 V or less, 0 Hz is displayed.
In the case of other setting
When the input voltage to this unit is 80 V or less, 0 Hz is displayed.
Frequency condition
When the frequency is less than 44.5 Hz, 44.5 Hz is displayed as a fixed value.
When the frequency exceeds 66.5 Hz, 66.5 Hz is displayed as a fixed value.
Harmonic voltage In the case of 220 V direct setting
When the input voltage to this unit is 160 V or less, 0 V and 0% are displayed.
In the case of other setting:
When the input voltage to this unit is 80 V or less, 0 V and 0% are displayed.
Harmonic current
Input voltage condition
In the case of 220 V direct setting
When the input voltage to this unit is 160 V or less, 0 A and 0% are displayed.
In the case of other setting:
When the input voltage to this unit is 80 V or less, 0 A and 0% are displayed.
Current condition
When the input current is less than 0.5% of the rated current, 0 A and 0% are displayed.
Supplementation ----------------------------------------------------------------------------------------------------------------------------------------------------------------
After ratings are set or settings are changed on this unit, it takes some seconds until the operation of the unit stabilizes. The unit does
not perform measurement during this period. (MEASURE LED is off.) The error code 44h is returned through CC-Link communication.
: x10
Indication on display unit
* The displayed input voltage is not the voltage on the primary side of VT, but the voltage input to this unit.
Operation of this unit
(21/32)
Data transmitted through
CC-Link
Same as on the left
Same as on the left
Same as on the left
Same as on the left
Measurement
incompletion error (error
code 17h) is returned.
Same as on the left
Measurement
incompletion error (error
code 17h) is returned.
Measurement
incompletion error (error
code 17h) is returned.
Same as on the left

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