Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 388

Moreover, speed synchronized operation of an inverter can be performed by using the pulse train output together with the
terminal JOG.
Pr. Name
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, 100" and Pr.384 Input pulse division scaling factor ≠ "0" changes
the function of terminal JOG to a pulse train input so that the frequency can be set to the inverter. 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
Inverter
PC
∗1
Pull up resistor
JOG
2 kΩ
SD
*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 load of the resistor and the permissible load current of the output
transistor, and use within the permissible range.
Wiring length
Pull-up/down resistor Not required
Load current (reference) 10 mA
Initial value
Setting range
FM CA
0
1
*2
10
*2
11
0
*2
20
*2
21
*2
100
0
0
1 to 250
0 Hz 0 to 590 Hz
60 Hz 50 Hz 0 to 590 Hz
Pull down resistor
Less than 10 m 10 to 50 m
1 kΩ
35 mA
Pulse train input
(terminal JOG)
*1
JOG signal
Pulse train input
*1
JOG signal
Pulse train input
*1
JOG signal
Pulse train input
Pulse train input
Pulse train input disabled
Division ratio on the input pulse. The frequency resolution on the
input pulse changes according to this setting.
Set the frequency when the input pulse is zero (bias).
Set the frequency when the input pulse is maximum (gain).
Source logic
Inverter
PC
JOG 2 kΩ
∗1
SD
50 to 100 m
470 Ω
65 mA
5.9 (D) Operation command and frequency command
Description
Pulse train output
(terminal FM)
*2
FM output
*2
FM output
High-speed pulse train output
(50% duty)
High-speed pulse train output (50%
duty)
High-speed pulse train output
(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.
2
), connect the open
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
387