Mitsubishi Electric FR-A800 Series Instruction Manual page 408

Moreover, speed synchronized operation of an inverter can be performed by using the pulse train input and output together.
Pr.
291
Pulse train I/O selection
D100
384 Input pulse division
D101 scaling factor
385 Frequency for zero input
D110 pulse
386 Frequency for maximum
D111 input pulse
*1 Function assigned to Pr.185 JOG terminal function selection.
*2 Valid only for the FM type inverters.
 Selection of pulse train input (Pr.291)
• Setting Pr.291 Pulse train I/O selection = "1, 11, 21, or 100" and Pr.384 Input pulse division scaling factor ≠ "0" allows
the function of terminal JOG to change into a pulse train input for setting of the inverter frequency. In the initial setting, the
JOG signal is assigned to terminal JOG. A maximum pulse train of 100k pulses/s can be input.
• Connection with an open collector output system pulse generator
Sink logic
Pull up resistor ∗1
*1 When the wiring length is long with open collector outputs, the influence of stray capacitance causes the pulse to flatten out and prevents the
input pulse from being recognized.
When the wiring length is long (10 m or longer of shielded twisted pair cable with a recommended cable gauge of 0.75 mm
collector output signal to the power supply by an external pull-up resistor. The following table shows the reference resistance values for wiring
length. The stray capacitance of the wiring changes considerably according to how the cable is laid, thus the above wiring lengths are not
guaranteed values. When using a pull-up/down resistor, check the permissible power of the resistor and the permissible load current of the output
transistor, and use within the permissible range.
Wiring length
Pull-up/down resistor
Load current (reference)
Downloaded from ManualsNet.com
Initial value
Name
FM
0
0
0 Hz
60 Hz 50 Hz
Inverter
PC
JOG
2 kΩ
SD
Less than 10 m
Not required
10 mA
search engine
Setting range
Pulse train input
CA
(terminal JOG)
0
JOG signal
1 Pulse train input
*2
10 JOG signal
*2
Pulse train input
11
*2
20 JOG signal
*2
Pulse train input
21
*2
Pulse train input
100
0 Pulse train input disabled
Division ratio on the input pulse. The frequency resolution on the
1 to 250
input pulse changes according to this setting.
Set the frequency applicable to the time when the input pulse is
0 to 590 Hz
zero (bias).
Set the frequency applicable to the time when the input pulse is
0 to 590 Hz
maximum (gain).
Source logic
PC
JOG
∗1
Pull down resistor
SD
10 to 50 m 50 to 100 m
1 kΩ 470 Ω
35 mA 65 mA
Description
Pulse train output
(terminal FM)
*1 *2
FM output
*2
FM output
High-speed pulse train output
*1
(50% duty)
High-speed pulse train output (50%
duty)
High-speed pulse train output
*1
(ON width fixed)
High-speed pulse train output (ON
width fixed)
High-speed pulse train output
(ON width fixed).
Output the pulse train input without
changes.
Inverter
2 kΩ
5.9 (D) Operation command and frequency command
1
2
3
4
5
6
7
8
9
10
2
), connect the open
407
5. PARAMETERS