Mitsubishi Electric FR-F820-00046 Instruction Manual page 247

*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
∗1
Pull up resistor
*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)
• Connection with a complementary output system pulse generator
Sink logic
24 V power
NOTE
• When pulse train input is selected, the function assigned to terminal JOG using Pr.185 JOG terminal function selection is
disabled.
• Pr.291 is the selection parameter for pulse train output / FM output. Thus, before changing the setting, check the specifications
of the device connected to the terminal FM. (For the pulse train output, refer to
 Pulse train input specification
Supported pulse method
HIGH input level
LOW input level
Maximum input pulse rate
Minimum input pulse width
Input resistance/load current
Maximum wiring length
(reference value)
Detection resolution
*1 The wiring length of complementary output is dependent on the output wiring specification of the complementary output unit. The stray
capacitance of the wiring changes considerably according to how the cable is laid, so the maximum wiring length is not a guaranteed value.
246
5. PARAMETERS
5.6 (D) Operation command and frequency command
Inverter
PC
JOG
2 kΩ
SD
Less than 10 m
Not required 1 kΩ
10 mA 35 mA
Inverter
PC
JOG
2 kΩ
SD
Item
Open collector output method
Complementary output method
Source logic
Inverter
PC
JOG
2 kΩ
Pull down resistor ∗1
SD
10 to 50 m 50 to 100 m
470 Ω
65 mA
Source logic
24 V power
Open collector output / Complementary output (24 V power
supply voltage)
20 V or more (voltage between JOG and SD)
5 V or less (voltage between JOG and SD)
100k pulses/s
2.5 μs
2 kΩ (typ) / 10 mA (typ)
2
10 m (0.75 mm /twisted pair)
100 m (output resistance 50 Ω)
1/3750
Inverter
PC
JOG 2 kΩ
SD
page 300.)
Specification
*1
2
), connect the open