Regeneration Avoidance Function; Free Parameter; Energy Saving Monitor - Mitsubishi Electric FR-F700 Manual

Regeneration avoidance
Pr.
882 to 886
function
Pr.882 Regeneration avoidance operation selection
Pr.883 Regeneration avoidance operation level
Pr.884 Regeneration avoidance at deceleration detection sensitivity
Pr.885 Regeneration avoidance compensation frequency limit value
Pr.886 Regeneration avoidance voltage gain
This function detects a regeneration status and increases the
frequency to avoid the regeneration status.
Possible to avoid regeneration by automatically increasing the
frequency and continue operation if the fan happens to rotate
faster than the set speed due to the effect of another fan in the
same duct.
Pr. Setting
Number Range
0
(initial Regeneration avoidance function invalid
882
value)
1 Regeneration avoidance function valid
Set the bus voltage level at which regeneration
avoidance operates. When the bus voltage level
is set to low, overvoltage error will be less apt to
300 to
883
occur. However, the actual deceleration time
800V
increases. The set value must be higher than the
power supply valtage ×
0
Regeneration avoidance by bus voltage change
(initial
ratio is invalid
value)
884
Set sensitivity to detect the bus voltage change
Setting
1 to 5
Detection sensitivity low
Set the limit value of frequency which rises at
0 to 10Hz
activation of regeneration avoidance function.
885
9999 Frequency limit invalid
Adjust responsiveness at activation of
regeneration avoidance. A larger setting will
886 0 to 200% improve responsiveness to the bus voltage
change. However, the output frequency could
become unstable.
Pr.

Free parameter

888, 889
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.
Refer to the section about Pr. 52 and other
Pr.
891
relevant parameters.
45
indicates simple mode parameters and
Pr.
Description
.
2
1 5
high
Pr.889 Free parameter 2
indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions.
Pr.
Pr.

Energy saving monitor

892 to 899
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.897 Power saving monitor average time
Pr.898 Power saving cumulative monitor clear
Pr.899 Operation time rate (estimated value)
From the power consumption
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
Power operation and the input power calculated by the
saving 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 saving
Power
Power during commercial power supply operation
saving
rate
Ratio of power saving on the assumption that
Pr. 893 is 100%
Power saving
×100
Pr.893
Average value of power saving amount per hour
Power
during predetermined time (Pr. 897)
saving
Σ (Power saving × ∆t)
average
value
Pr.897
Ratio of power saving average value on the
assumption that the value during commercial
power supply operation is 100%
Power
Σ (Power saving × ∆t)
saving
Pr.897
rate
reference
Ratio of power saving average value on the
value
assumption that Pr. 893 is 100%
Power saving average value
Pr.893
Power
saving Power saving average value represented in
charge terms of charge
average Power saving average value × Pr. 896
value
estimated value during
Increments
0.01kW/
0.1kW*
× 100
0.1%
0.01kWh/
0.1kWh*
×100
0.1%
×100
0.01/0.1*