Analog Input Selection (Pr. 73, Pr. 267) - Mitsubishi Electric FR-B-750 to 75K Instruction Manual

Frequency setting by analog input
(terminal 1, 2, 4)

4.16.2 Analog input selection (Pr. 73, Pr. 267)

You can select the function that switches between forward rotation and reverse rotation according to the analog
input terminal selection specifications, the override function and the input signal polarity.
Parameter
Name
Number
73 Analog input selection
267 Terminal 4 input selection
(1) Selection of analog input specifications
⋅ For the terminals 2, 4 used for analog input, voltage input (0 to 5V, 0 to 10V) or current input (0 to 20mA) can be
selected.
Change parameters (Pr.73, Pr.267) and a voltage/current input switch (switch 1, 2) to change input specifications.
(refer to the table below)
Voltage/current
input switch
Switch 1
Switch 2
⋅ Rated specifications of terminal 2, 4
Voltage input: Input resistance 10kΩ ± 1kΩ, Maximum permissible voltage 20VDC
Current input: Input resistance 245Ω ± 5Ω, Maximum permissible current 30mA
CAUTION
⋅ Set Pr.73, Pr.267, and a voltage/current input switch correctly, then input an analog signal in accordance with the
setting. Incorrect setting as in the table below may result in failure. Incorrect settings other than below can
cause abnormal operation.
Setting Causing Failure
Switch setting Terminal input
ON
Voltage input
(current input)
OFF
Current input
(voltage input)
166
Initial Setting
Value Range
0 to 5,
10 to 15
1
6, 7,
16, 17
0
0
1
2
Switch 1:Terminal 4 input
ON: Current input (initial status)
OFF: Voltage input
Switch 2: Terminal 2 input
ON: Current input
OFF: Voltage input (initial status)
This could lead to damage to the analog signal output circuit of external devices.
(electrical load in the analog signal output circuit of external devices increases)
This could lead to damage to the input circuit of the inverter.
(output power in the analog signal output circuit of external devices increases)
Description
Voltage/current
input switch
You can select the input specifications
Switch 2 - OFF
of terminal 2 (0 to 5V, 0 to 10V, 0 to
(initial status)
20mA) and input specifications of
terminal 1 (0 to ±5V, 0 to ±10V).
Switch 2 - ON
Override and reversible operation can
be selected.
Switch 1 - ON
Terminal 4 input 4 to 20mA
(initial status)
Terminal 4 input 0 to 5V
Switch 1 - OFF
Terminal 4 input 0 to 10V
Operation