Frequency Setting By Pulse Train Input (Pr. 291, Pr. 384 To Pr. 386) - Mitsubishi Electric FR-B-750 to 75K Instruction Manual

4.20.4 Frequency setting by pulse train input (Pr. 291, Pr. 384 to Pr. 386)

The inverter speed can be set by inputting pulse train from terminal JOG.
In addition, synchronous speed operation of inverters can be performed by combining pulse train I/O.
Parameter
Name
Number
291 Pulse train I/O selection
Input pulse division
384
scaling factor
Frequency for zero
385
input pulse
Frequency for
386
maximum input pulse
* The setting range differs according to the inverter capacity. (22K or less/30K or more)
(1) Pulse train input selection (Pr. 291)
· Setting any of "1, 11, 21, 100" in Pr. 291 Pulse train I/O selection and a value other than "0" in Pr. 384 Input pulse division
scaling factor switches terminal JOG to pulse train input terminal and frequency setting of the inverter can be
performed. (The initial value is JOG signal)
Pulse train input of maximum of 100k pulse/s is enabled.
· Output specifications (high speed pulse train output or FM output) of terminal FM can be selected using Pr. 291.
Connection with an open collector output system
pulse generator
Sink logic
PC
Pull up resistance
*
JOG
SD
Connection with an open collector output system
pulse generator
Source logic
PC
JOG
Pull down resistance
*
SD
Setting Range
Initial
Value
FR-B
0
0
1 to 250
0 to 120Hz/
0Hz
0 to 60Hz
0 to 120Hz/
60Hz
0 to 60Hz
Inverter
24V power
2kΩ
Inverter
2kΩ
24V power
Special operation and frequency control
FR-B3
Pulse train input
0 Terminal JOG
1 Pulse train input
10 Terminal JOG
11 Pulse train input
20 Terminal JOG
21 Pulse train input
100 Pulse train input
0 Pulse train input invalid
Indicates division scaling factor to the input pulse and
the frequency resolution to the input pulse changes
according to the value.
0 to
Set the frequency when the input pulse is 0 (bias).
120Hz
*
0 to Set the frequency when the input pulse is maximum
120Hz (gain).
*
Connection with a complimentary output system
pulse generator
Sink logic
PC
JOG
SD
Connection with a complimentary output system
pulse generator
Source logic
PC
JOG
SD
Description
Pulse train output
FM output
FM output
High speed pulse train output
(50%Duty)
High speed pulse train output
(50%Duty)
High speed pulse train output
(ON width is always same)
High speed pulse train output
(ON width is always same)
High speed pulse train output
(ON width is always same)
The inverter outputs the signal
input as pulse train as it
Inverter
2kΩ
Inverter
2kΩ
4
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