Online Auto Tuning; Communication Initial Setting; Adjustable 5 Points V/F - Mitsubishi Electric FR-A700 Manual

Pr.
Pr.
95, 574

Online auto tuning

Magnetic flux Magnetic flux Magnetic flux
Pr.95 Online auto tuning selection
When online auto tuning is selected, excellent torque accuracy is provided
by temperature compensation even if the secondary resistance value of
the motor varies with the rise of the motor temperature.
Select magnetic flux observer when performing vector control.
Pr.95, Pr.574 Setting
0 (initial value)
Online auto tuning is not performed
1
Start-time tuning (at start-up)
2*
Magnetic flux observer (normal)
* Only Pr.95 can be set.
⋅ Perform offline auto tuning before performing start-time tuning of the
online auto tuning. Data needs to be calculated.
⋅ For using start-time tuning in elevator, examine the utilization of a
brake sequence for the brake opening timing at a start. Though the
tuning ends in about a maximum of 500ms after a start, torque is not
provided fully during that period. Therefore, note that there may be a
possibility of drop due to gravity.
⋅ For the SF-V5RU, SF-JR (with encoder) or SF-HRCA (with
encoder), it is not necessary to perform offline auto tuning to select
adaptive magnetic flux observer. (However, perform offline auto
tuning when the wiring length is long.)
Pr. Pr.
96
Refer to the section about Pr. 82.
Pr.
Pr.
100 to 109

Adjustable 5 points V/F

Pr.100 V/F1(first frequency)
Pr.102 V/F2(second frequency)
Pr.104 V/F3(third frequency)
Pr.106 V/F4(fourth frequency)
Pr.108 V/F5(fifth frequency)
A dedicated V/F pattern can be made by freely setting the V/F
characteristic between a startup and the base frequency and base
voltage under V/F control (frequency voltage/frequency).
The torque pattern that is optimum for the machine's characteristic
can be set.
Set "2" in Pr.71 and voltage and frequency in Pr.100 to Pr.109 .
When frequency values at each point are the same, write disable
error ( ) appears. Set frequency and voltage within the range of
Pr.3 Base frequency and Pr.19 Base frequency voltage .
Voltage
Base frequency
voltage
Pr.19
V/F3
Torque boost
V/F1
Pr.0
V/F2
0
V/F Characteristic
⋅ When Pr.19 Base frequency voltage ="8888" or "9999", Pr.71 cannot be
set to "2". When setting "2" in Pr.71, set the rated voltage value in
Pr.19.
Pr.
Pr.
110, 111
Refer to the section about Pr.7.
Pr.
Pr.
112
Refer to the section about Pr.0.
Pr.
Pr.
113
Refer to the section about Pr.3.
Pr.
Pr.
114, 115
Refer to the section about Pr.22.
Pr. Pr.
116
Refer to the section about Pr.41.
When setting parameters, refer to the instruction manual (applied) and understand instructions.
Sensorless Sensorless Sensorless
Vector Vector Vector
Pr.574 Second motor online auto tuning
Description
V/F V/F V/F
Pr.101 V/F1(first frequency voltage)
Pr.103 V/F2(second frequency voltage)
Pr.105 V/F3(third frequency voltage)
Pr.107 V/F4(fourth frequency voltage)
Pr.109 V/F5(fifth frequency voltage)
V/F5
V/F4
Frequency
Base frequency
Pr.3
Pr.
Pr.
117 to 124, 331 to 337, 341 to 343, 549

Communication initial setting

Pr.117 PU communication station number
Pr.119 PU communication stop bit length
Pr.121 Number of PU communication retries
Pr.123 PU communication waiting time setting
Pr.124 PU communication CR/LF presence/absence selection
Pr.331 RS-485 communication station number
Pr.333 RS-485 communication stop bit length
Pr.335 RS-485 communication retry count
Pr.337 RS-485 communication waiting time setting
Pr.342 Communication EEPROM write selection
Pr.549 Protocol selection
(1) Initial settings and specifications of RS-485
communication (Pr.117 to Pr.124, Pr.331 to Pr.337,
Pr.341)
Used to perform required settings for RS-485 communication
between the inverter and personal computer.
There are two different communications: communication
using the PU connector of the inverter and communication
using the RS-485 terminals.
You can perform parameter setting, monitoring, etc. using
the Mitsubishi inverter protocol or Modbus-RTU protocol.
To make communication between the personal computer
and inverter, initialization
specifications must be made to the inverter.
Data communication cannot be made if the initial settings
are not made or there is any setting error.
Pr.
Setting Range
Number
Specify the inverter station number.
117 0 to 31
Set the inverter station numbers when two or
more inverters are connected to one personal
331 (0 to 247)
*1
computer.
Set the communication speed.
118 48, 96, 192, 384 The setting value
communication speed.
332 (3, 6, 12, 24)
*2
For example, the communication speed is
19200bps when the setting value is 192.
0
119
1 (initial value)
333
10
11
0
Without parity check
120
1
With odd parity check
334
2 (initial value)
With even parity check
Set the permissible number of retries at
occurrence of a data receive error. If the
0 to10
number of consecutive errors exceeds the
121
permissible value, the inverter will come to an
335
alarm stop.
If a communication error occurs, the inverter
9999
will not come to an alarm stop.
No PU connector communication
Communication with RS-485 terminals can be
0
made, but the inverter will come to an alarm
stop in the NET operation mode.
122
Set the interval of communication check time.
336
If a no-communication state persists for longer
0.1 to 999.8s
than the permissible time, the inverter will
come to an alarm stop.
9999 (initial value)
No communication check
Set the waiting time between data
0 to 150ms
123
transmission to the inverter and response.
337
9999 (initial value)
Set with communication data.
0
Without CR/LF
124
1 (initial value)
With CR
341
2
With CR/LF
*1 When making communication through Modbus-RTU protocol with the
RS-485 terminals, the setting range of Pr.331 within parenthesis is
applied.
*2 The values in parenthesis are added to the setting range of Pr.332.
Pr.118 PU communication speed
Pr.120 PU communication parity check
Pr.122 PU communication check time interval
Pr.332 RS-485 communication speed
Pr.334 RS-485 communication parity check selection
Pr.336 RS-485 communication check time interval
Pr.341 RS-485 communication CR/LF selection
Pr.343 Communication error count
of the communication
Description
×
100 equals the
Stop bit length Data length
1bit
8bit
2bit
1bit
7bit
2bit
56