Mitsubishi Electric FR-V500 Series Instruction Manual page 58

5.1.2 Explanation of simple mode parameters
Refer to the separately available Instruction Manual (detailed) for details.
Pr. 1 "maximum speed", Pr. 2 "minimum speed"
You can clamp the upper and lower limits of the output
speed.
Speed setting
CAUTION
Note that when you have set the minimum
speed, merely turning on the start signal will
start the motor at the preset speed, without the
input of the speed command, according to the
acceleration time setting.
Pr. 7 "acceleration time", Pr. 8 "deceleration time"
The time taken to reach the Pr. 20 acceleration/
deceleration reference speed (factory-set to 1500r/
min) from 0r/min is set as the acceleration time, and
the time taken to reach 0r/min from the Pr. 20 (factory-
set to 1500r/min) speed is set as the deceleration
time.
Pr. 20
0r/min
Acceleration time
Pr. 7
You can select whether write to various parameters can be performed or not. Use this function to prevent
parameter values from being rewritten by misoperation.
Setting
0 Parameter write can be performed. (Write is enabled only during a stop in the PU operation mode.)
Parameter write cannot be performed. (Write to Pr. 22, Pr. 75, Pr. 77 and Pr. 79 "operation mode selection"
1
is enabled.)
2 Write during operation is enabled.
REMARKS
• Parameters below are write-enabled during operation even when Pr. 77 = "0".
Pr. 4 to Pr. 6, Pr. 22, Pr. 24 to Pr. 27, Pr. 52 to Pr. 56, Pr. 75, Pr. 77, Pr. 129, Pr. 130, Pr. 133, Pr. 134, Pr. 158, Pr. 160,
Pr. 232 to Pr. 240, Pr. 496, Pr. 497, Pr. 805, Pr. 806, Pr. 866, Pr. 900, Pr. 901 and Pr. 990.
• Parameters below are write-enabled even when Pr. 77 = "1".
Pr. 22, Pr. 75, Pr. 77 and Pr. 79
• Parameters below are write-disabled during operation even when Pr. 77 = "2".
Pr. 60, Pr. 71, Pr. 72, Pr. 79, Pr. 80 to Pr. 84, Pr. 90 to Pr. 96, Pr. 180 to Pr. 183, Pr. 187, Pr. 190 to Pr. 192, Pr. 195, Pr. 450,
Pr. 451, Pr. 453, Pr. 454, Pr. 800, Pr. 819, Pr. 849, Pr. 851, Pr. 852 Pr. 859 and Pr. 868
Maximum
speed
Pr. 1
Minimum
speed
Pr. 2
10V
Time (s)
Deceleration time
Pr. 8
Pr. 77 "parameter write disable selection"
Function list (Simple mode parameters)
Pr. 4 "multi-speed setting (high speed)"
Pr. 5 "multi-speed setting (middle speed)"
Pr. 6 "multi-speed setting (low speed)"
You can select any speed (RH, RM, RL) by simply
switching the external contact signal.
RH
High speed ON
Middle speed OFF
Low speed OFF
You can also set each speed to any value within the
range of 0 to 3600r/min during inverter operation.
Using the extended function, you can set up to 15
speeds.
Refer to the Instruction Manual (detailed) for the
setting method.
Pr. 72 "PWM frequency selection"
You can change the motor sound.
Setting Carrier Frequency
1
(factory setting)
2
3
4
5
6
REMARKS
Increasing the value reduces the sound level
but increases noise and leakage currents.
Set or "1" in Pr. 240 "Soft-PWM control" to decrease
motor noises.
Refer to page 66 for Pr. 240 "Soft-PWM control".
Description
55
RM RL
OFF OFF
ON OFF
OFF ON
2.25kHz
4.5kHz
6.75kHz
9kHz
11.25kHz
13.5kHz
5