Load Pattern Selection (Pr. 14) - Mitsubishi Electric FR-A500 Instruction Manual

4.2.9

Load pattern selection (Pr. 14)

Pr. 14 "load pattern selection"
You can select the optimum output characteristic (V/F characteristic) for the application and load
characteristics.
When "4" (energy-saving mode) is set in Pr. 60 "intelligent mode selection", the output voltage is
automatically set by the intelligent mode. (Refer to page 98.)
.
Parameter
Factory Setting
Number
14 0
Pr.14=0
For constant-torque loads
(e.g. conveyor, cart)
100%
Base frequency
Output frequency (Hz)
Setting
0
1
2 Boost for reverse rotation 0%
For constant-
torque lift
3 Boost for forward rotation 0%
ON...For constant-torque load (same as in setting = 0)
4 RT signal
OFF...For constant-torque lift, boost for reverse rotation 0% (same as in
setting = 2)
ON...For constant-torque load (same as in setting = 0)
5 RT signal
OFF...For constant-torque lift, boost for forward rotation 0% (same as in
setting = 3)
Note: 1. This parameter setting is ignored when Pr. 80 and Pr. 81 have been set to select the advanced
magnetic flux vector control mode.
2. When the RT signal is on, the other second functions such as second acceleration/deceleration
time and second torque boost are also selected.
3. When the setting is 4 or 5, X17 signal may be used instead of the RT signal. Use any of Pr. 180
to Pr. 186 to assign the terminal used to input the X17 signal.
Setting Range
0 to 5
Pr.14=1
For variable-torque loads
(Fan, pump)
100%
Base frequency
Output frequency (Hz)
Output Characteristics
For constant-torque load
For variable-torque load
Boost for forward rotation...Pr. 0 setting
Boost for reverse rotation...Pr. 0 setting
79
Related parameters
Pr. 0 "torque boost"
Pr. 60 "intelligent mode selection"
Pr. 80 "motor capacity"
Pr. 81 "number of motor poles"
Pr. 180 to Pr. 186
(input terminal function selection)
Pr.14=2
For lift
Boost for forward rotation...Pr. 0 setting
Boost for reverse rotation...0%
100%
Forward
rotation
Reverse
rotation
Pr.0
Base frequency
Output frequency (Hz)
PARAMETERS
Pr.14=3
For lift
Boost for forward rotation...0%
Boost for reverse rotation...Pr. 0 setting
100%
Reverse
rotation
Forward
rotation
Pr.0
Base frequency
Output frequency (Hz)
Application
Conveyor, cart, etc.
Fan, pump
For lift load
Load pattern selection
switching function using RT
signal
4