Mitsubishi Electric FR-A700 Technical Manual page 195

(2) Adjustment of pulse train input and
frequency [Pr. 385, 386]
Frequency for zero input pulse can be set using [Pr.
385 Frequency for zero input pulse] and frequency at
maximum input pulse can be set using [Pr. 386
Frequency for maximum input pulse].
[Pr.386]
60Hz
Output
frequency
(Hz)
Pr.385]
0Hz
0
Pr.384
*
Limit value can be calculated from the following formula.
([Pr. 386] - [Pr. 385])
2.4.8 Frequency setting by 16 bit digital input (FR-A7AX) [Pr. 300 to 305, 329]
F700 E700
16bit (12bit) digital input is available for the inverter with a plug-in option FR-A7AX installed and [Pr. 304
For , using digital input as a torque command is also available. (Refer to page 301)
A700
[Pr.] Name
300
BCD input bias
301
BCD input gain
302
BIN input bias
303
BIN input gain
Digital input and analog
304
input compensation
enable/disable
selection
Read timing operation
305
selection
Digital input increments
329
*3
selection
*1 Use terminal 1 for analog input compensation.
*2 X12 to X15 signal of plug-in option FR-A7AX is invalid.
*3 Writing during running is unavailable even when [Pr. 77 = 2]. When changing the parameter setting, stop the operation.
Also parameter clear is invalid.
Limit value*
input pulse
(pulse/s)
Maximum input pulse
400(maximum 100k pulse/s)
1.1 + [Pr. 385]
(A700)(F700)(E700)
Initial Setting
Value Range
0Hz 0 to 400Hz Set bias frequency for BCD code input
0 to 400Hz Set gain frequency for BCD code input
60Hz
9999 Digital input value is the output frequency
0Hz 0 to 400Hz Set bias frequency for binary input
0 to 400Hz Set gain frequency for binary input
60Hz
9999 Digital input value is the output frequency
0 3 digits BCD code input
1 12bit binary input
2
3 digits BCD code input
3 12bit binary input
12bit binary Torque
4
command value input
9999
10 4 digits BCD code input
11 16bit binary input
12 4 digits BCD code input
13 16bit binary input
16bit binary Torque
14
command value input
9999 No function
0 Data is always read regardless of DY signal.
1 Data is read only when DY signal is ON.
0
Data is always read regardless of DY signal.
10
With filter at reading.
0 Input value increments 10
1 Input value increments 1
1
2 Input value increments 0.1
3 Input value increments 0.01
(3) Calculation method of scaling factor of
input pulse [Pr. 384]
Maximum input pulse can be calculated from the
following formula using [Pr. 384 Input pulse division
scaling factor].
Maximum input pulse (pulse/s) = [Pr. 384]
( maximum of 100k pulse/s
detectable pulse = 11.45 pulse/s
For example, when you want to operate at 0Hz when
pulse train input is zero and operate at 30Hz when
pulse train is 4000 pulse/s, set parameters as below.
[Pr. 384] = 10
(maximum input pulse 4000 pulse/s)
[Pr. 385] = 0Hz
[Pr. 386] = 30Hz
(pulse train limit value is 33Hz)
Description
Availability of Analog
Input selection
Input Compensation
*2
*2
*2
*2
*2
229
PARAMETER
)
A700
9999] is set.
Inverters
Available
A700 F700
*
1
— —
— —
400
2
E700
—
—