MITSUBISHI ELECTRIC INVERTER FR-F700 - Manual (Page 44)

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indicates simple mode parameters and indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions. Pr. Pr.
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.
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.
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))
Regeneration avoidance
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
Pr.
Number
Setting
Range
Description
882
0
(initial
value)
Regeneration avoidance function invalid
1 Regeneration avoidance function valid
883
300 to
800V
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
occur. However, the actual deceleration time
increases. The set value must be higher than the
power supply valtage
× .
884
0
(initial
value)
Regeneration avoidance by bus voltage change
ratio is invalid
1 to 5
Set sensitivity to detect the bus voltage change
Setting
1 5
Detection sensitivity low high
885
0 to 10Hz
Set the limit value of frequency which rises at
activation of regeneration avoidance function.
9999 Frequency limit invalid
886 0 to 200%
Adjust responsiveness at activation of
regeneration avoidance. A larger setting will
improve responsiveness to the bus voltage
change. However, the output frequency could
become unstable.
Free parameter
Pr.888 Free parameter 1 Pr.889 Free parameter 2
891
Refer to the section about Pr. 52 and other
relevant parameters.
Pr.
882 to 886
2
Pr.
888, 889
Pr.
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.897 Power saving monitor average time
Pr.898 Power saving cumulative monitor clear
Pr.899 Operation time rate (estimated value)
Energy
Saving
Monitor
Item
Description and Formula Increments
Power
saving
Difference between the estimated value of
power necessary for commercial power supply
operation and the input power calculated by the
inverter
Power during commercial power supply
operation - input power monitor
0.01kW/
0.1kW*
Power
saving
rate
Ratio of power saving on the assumption that
power during commercial power supply
operation is 100%
× 100
0.1%
Ratio of power saving on the assumption that
Pr. 893 is 100%
×100
Power
saving
average
value
Average value of power saving amount per hour
during predetermined time (Pr. 897)
0.01kWh/
0.1kWh*
Power
saving
rate
reference
value
Ratio of power saving average value on the
assumption that the value during commercial
power supply operation is 100%
×100
0.1%
Ratio of power saving average value on the
assumption that Pr. 893 is 100%
×100
Power
saving
charge
average
value
Power saving average value represented in
terms of charge
Power saving average value
× Pr. 896
0.01/0.1*
Pr.
892 to 899
Power saving
Power during commercial power supply operation
Power saving
Pr.893
Σ (Power saving × ∆t)
Pr.897
Σ (Power saving × ∆t)
Pr.897
Power saving average value
Pr.893