Mitsubishi Electric MELSEC iQ-R Series User Manual page 26

Section 3 NAME AND FUNCTION OF EACH PART
(4) Restrictions for measuring data
・ Measurement cannot be performed immediately after the power loading to the sequencer system
(Module ready signal is under the OFF condition).
After checking that Module ready (Xn0) is ON, obtain measuring data.
・Measurement cannot be performed immediately after operating conditions are set up to the module. After
checking that Operating condition setting completion flag (Xn9) becomes ON, obtain measuring data.
・Behaviors during operation are as follows.
Measuring item
Current
Current demand
Harmonic current
Current harmonic
distortion
Voltage
Harmonic voltage
Voltage harmonic
distortion
Electric power,
Reactive power,
Apparent power
Electric power
demand
Electric energy
Power factor
Frequency
*1: In 1-phase three-wire system, indicate "0 V" if RMS value is under 22V.
When the input current is less than 0.4% of the rating current, it becomes 0A.
Current demand is obtained by current moving average. Therefore, even if the current
is 0A, current demand may not be 0A.
Current condition:
Indicate "0 A" at each phase if current is 0A.
Voltage condition:
Indicate "0 A" if 1-2 line voltage is 0V.
Frequency condition:
Indicate "0 A" at all phase if frequency is under 44.5Hz.
Harmonic current condition:
Indicate "0 %" at each phase if harmonic current (Harmonic current (1st)) is 0A.
Voltage condition:
Indicate "0 %" if 1-2 line voltage is 0V.
Frequency condition:
Indicate "0 %" at all phase if frequency is under 44.5Hz.
Indicate "0 V" if RMS value is under 11V. (*1)
Voltage condition:
Indicate "0 V" at each inter-wire if voltage is 0V.
Indicate "0 V" if 1-2 line voltage is 0V.
Frequency condition:
When it is less than 44.5Hz, it becomes 0V.
Voltage condition:
Indicate "0 %" at each inter-wire if voltage is 0V.
Indicate "0 %" if 1-2 line voltage is 0V.
Frequency condition:
When it is less than 44.5Hz, it becomes 0V.
When current is 0A (at all phases are 0A) or when voltage is 0V (all in-between wires
are 0V), it becomes 0kW.
* The unit is kvar for reactive power and kVA for apparent power.
Electric power demand is obtained by electric power moving average. Therefore,
even if electric power is 0kW, electric power demand may not be 0kW.
The electric energy is measured with a load that is about 0.4% or more of all load
power. Even if the indicated value is "0", measurement value will increase.
When current is 0A (at all phases are 0A) or when voltage is 0V (all in-between wires
are 0V), it becomes 100%
Voltage condition
Indicate "0 Hz" if 1-2 line voltage is 0 V.
Frequency condition
When it is less than 44.5Hz, it is fixed to 44.5Hz.
Behavior of the module
25
RE81WH