Voltage Input (Pr. 73); Input Filter Time Constant (Pr. 74) - Mitsubishi Electric FR-E520 Instruction Manual

4.2.28 Voltage input (Pr. 73)

Pr. 73 "0-5V/0-10V selection"
• You can change the input (terminal 2) specifications in response to the frequency
setting voltage signal. When entering 0 to 10VDC, always make this setting.
Parameter
Number
73
Setting
0 For 0 to 5VDC input (factory setting)
1 For 0 to 10VDC input
Note: 1. To change the maximum output frequency at the input of the maximum
frequency command voltage, use Pr. 38. Also, the acceleration/deceleration
time, which is a slope up/down to the acceleration/deceleration reference
frequency, is not affected by the change in Pr. 73 setting.
2. When connecting a frequency setting potentiometer across terminals 10-2-5
for operation, always set "0" in this parameter.

4.2.29 Input filter time constant (Pr. 74)

Pr. 74 "filter time constant"
You can set the input section's internal filter constant for an external voltage or current
frequency setting signal.
• Effective for eliminating noise in the frequency setting circuit.
• Increase the filter time constant if steady operation cannot be performed due to noise.
A larger setting results in slower response. (The time constant can be set between
approximately 1ms to 1s with the setting of 0 to 8. A larger setting results in a larger
filter time constant.)
Parameter
Number
74
Factory Setting
Setting Range
0 0, 1
Terminal 2 Input Voltage
Factory Setting
Setting Range
1
Related parameters
Pr. 38 "frequency at 5V (10V) input"
0 to 8
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PARAMETERS