Free Parameter; Energy Saving Monitor; Adjustment Of Terminal Fm And Am Output (Calibration) - Mitsubishi Electric FR-A700 Manual

Pr.
Pr.
888, 889

Free parameter

Pr.888 Free parameter 1
Parameters you can use for your own purposes.
You can input any number within the setting range 0 to 9999.
For example, the number can be used:
⋅
As a unit number when multiple units are used.
⋅
As a pattern number for each operation application when
multiple units are used.
⋅ As the year and month of introduction or inspection.
Pr.
Pr.
891
Refer to the section about Pr.52.
Pr.
Pr.
892 to 899

Energy saving monitor

Pr.892 Load factor
Pr.893 Energy saving monitor reference (motor capacity)
Pr.894 Control selection during commercial power-supply operation
Pr.895 Power saving rate reference value
Pr.896 Power unit cost
Pr.898 Power saving cumulative monitor clear
From the power consumption estimated value during commercial
power supply operation, the energy saving effect by use of the
inverter can be monitored/output.
⋅ The following provides the items that can be monitored by the power
saving monitor (Pr.52, Pr.54, Pr.158 ="50")
(Only power saving and power saving average value can be output
to Pr.54 (terminal FM) and Pr.158 (terminal AM))
Energy
Saving
Description and Formula
Monitor
Item
Difference between the estimated value of power
necessary for commercial power supply operation and
Power savings the input power calculated by the inverter
Power during commercial power supply operation -
input power monitor
Ratio of power saving on the assumption that power
during commercial power supply operation is 100%
Power during commercial power supply
Power saving
rate
Ratio of power saving on the assumption that Pr.893 is
100%
Power savings
Pr.893
Average value of power saving amount per hour during
predetermined time (Pr.897)
Power savings
Σ
average value (Power saving
Pr.897
Ratio of power saving average value on the assumption
that the value during commercial power supply
operation is 100%
Σ
(Power saving rate
Power saving
Pr.897
rate
average value
Ratio of power saving average value on the assumption
that Pr.893 is 100%
Energy saving average
Pr.893
Power saving average value represented in terms of
Power saving
charge
charge
average value
Power saving average value
73
When setting parameters, refer to the instruction manual (applied) and understand instructions.
Pr.889 Free parameter 2
Pr.897 Power saving monitor average time
Pr.899 Operation time rate (estimated value)
Increments
Power savings
×
100
×
100
0.01kWh
× ∆
/0.1kWh
t )
× ∆
t )
×
100
×
100
0.01/0.1
×
Pr.896
⋅ The following shows the items which can be monitored by the
cumulative saving power monitor (Pr.52 = "51").
(The cumulative power monitor data digit can be shifted to the right by the
number set in Pr. 891
Energy
Saving
Monitor
Item
Power saving Power saving is added up per hour
Σ(Power saving × ∆t)
amount
Power saving Power saving average value represented in terms
of charge
amount
Power saving amount × Pr.896
charge
Estimated value of annual power saving amount
Annual power
Power saving amount
saving
amount
Operation time during
Annual power
Annual power saving amount represented in terms
saving
of charge
amount
Annual power saving amount × Pr.896
charge
* The increments differ according to the inverter capacity. (55K or less/75K
or more)
Pr.
Pr.
C0(900), C1(901)
Adjustment of terminal FM and AM
output (calibration)
C0 (Pr.900) FM terminal calibration
By using the operation panel or parameter unit, you can calibrate
terminal FM and terminal AM to full scale deflection.
(1) FM terminal calibration (C0 (Pr.900))
⋅
The terminal FM is preset to output pulses. By setting the
calibration parameter C0 (Pr.900), the meter connected to
the inverter can be calibrated by parameter setting without
use of a calibration resistor.
0.01kW
⋅ Using the pulse train output of the terminal FM, a digital
/0.1kW
*
display can be provided by a digital counter. The monitor
value is 1440 pulses/s output at the full-scale value of
Pr.54 FM terminal function selection.
0.1%
1mA
FM
Calibration
resistor
*1
SD
Pulse width T1: Adjust using calibration parameter C0
Pulse cycle T2: Set with Pr. 55 (frequency monitor)
*1 Not needed when the operation panel (FR-DU07) or parameter unit (FR-PU04/FR-
PU07) is used for calibration.
*
Used when calibration must be made near the frequency meter for such a reason
as a remote frequency meter.
However, the frequency meter needle may not deflect to full-scale if the calibration
resistor is connected. In this case, use this resistor and operation panel or
parameter unit together.
⋅
When the FM terminal is set to the open collector output
0.1% using Pr.291 Pulse train I/O selection , pulse train output can
not be calibrated using Pr.900 .
(2)AM terminal calibration (C1 (Pr.901))
⋅ The AM terminal is factory-set to output 10VDC in the full-
scale state of each monitor item. By setting the AM
terminal calibration C1(Pr.901) , the ratio (gain) of the output
*
voltage can be adjusted to the meter scale. Note that the
maximum output voltage is 10VDC.
Pr.
Pr.
C2(902) to C7(905), C12(917) to C19(920), C38(932) to C41(933)
Cumulative power monitor digit shifted times.)
Description and Formula
Pr.899
× 24 × 365 ×
C1 (Pr.901) AM terminal calibration
Indicator
1mA full-scale
analog meter
1440 pulses/s(+)
FM
(+) (-) T1
8VDC
SD
T2
Set with Pr.56 (current monitor)
Refer to the section about Pr.125.
Increments
0.01kWh/
0.1kWh
*
0.01/0.1
*
0.01kWh/
0.1kWh
*
100
0.01/0.1
*
(Digital indicator)
(-)