Mitsubishi Electric FR-A800, Instruction Manual

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(T) Multi-Function Input Terminal Parameters Parameters
5 - 390
Analog input specification selection
●
Concerning the terminals 2 and 4 used for analog input, the voltage input (0 to 5 V, 0 to 10 V) and
current input (0 to 20 mA) are selectable. To change the input specification, change the parame-
ters (Pr. 73, Pr. 267) and voltage/current input switch settings (switches 1, 2).
●
The terminal 2/4 rating specifications change depending on the voltage/current input switch
settings.
Voltage input: input resistance 10 kΩ ± 1 kΩ, permissible maximum voltage 20 V DC
Current input: input resistance 245 Ω ± 5 Ω, permissible maximum current 30 mA
●
Correctly set Pr. 73, Pr. 267 and voltage/current input switch settings so that the analog signal
appropriate for the settings is input. The incorrect settings shown in the table below cause a
failure. Other incorrect settings result in an incorrect operation.
I002637E
Fig. 5-186: Voltage/current input switches
Setting causing a failure
Operation
Switch setting
Terminal
input
ON (current input) Voltage input
Causes an analog signal output circuit failure in an external device
(due to increased loads on the signal output circuit of the external device).
OFF (Voltage
input)
Current input
Causes an input circuit failure in the inverter
(due to an increased output power in the analog signal output circuit of an external
device).
Tab. 5-148: Switch settings causing a failure
NOTE Check the voltage/current input switch number indication before setting, because it is different
from the FR-A700 series switch number indication.
2 4
Switch 1: Terminal 2 input
ON: Current input
OFF: Voltage input (initial status)
Switch 2: Terminal 4 input
ON: Current input (initial status)
OFF: Voltage input
Voltage/current
input switch
Switch 2
Switch 1