Mitsubishi Electronics FR-S500 Indicator connection and adjustment AM, Terminal AM Output Circuit

Input terminals

1.4.4Indicator connection and adjustment (AM)

Afull-scale 5VDC analog signal can be output from across terminals AM- 5.

The analog output level can be calibrated by the operation panel or parameter unit (FR-PU04). Terminal AM function selection can be set in Pr. 54 "AM terminal function selection".

Terminal AM is isolated from the control circuit of the inverter. The cable length should not exceed 30m.

The output signal from terminal AM delays about several 100ms in output and therefore cannot be used as a signal for control which requires fast response.

Meter

5V full scale Analog meter

AM

5

Inverter

CPU	AM		AM
	circuit	5		5VDC

Terminal AM Output Circuit

Adjustment

Set the reference output value of the inverter which outputs the full-scale voltage 5VDC.

Set it in Pr. 55 for frequency monitoring reference, or in Pr. 56 for current monitoring reference.

Use the terminal AM output calibration parameter C1 to adjust the output voltage. [Example] 1. To set the output across AM-5 to 5VDC at the inverter output

frequency of 90Hz, set 90Hz in Pr. 55. (Factory setting: 50Hz)

2.To set the output across AM-5 to 5VDC at the inverter output current of 20A, set 20A in Pr. 56. (Factory setting: rated inverter current)

CAUTION

•Refer to page 126 for the procedure of indicator adjustment.

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