Hitachi SJ700-2 instruction manual AM and AMI terminals, Setting of the offset for AM monitoring

Chapter 4 Explanation of Functions

4.2.82 AM and AMI terminals

You can monitor the inverter output frequency and output current via the AM and AMI terminals on the control circuit block.

The AM terminal outputs an analog voltage signal (0 to 10 V). The AMI terminal outputs an analog current signal (4 to 20 mA).

Related code

C028: [AM] siginal selection

C029: [AMI] siginal selection

C106: AM gain adjustment

C109: AM offset adjustment

C108: AMI gain adjustment

C110: AMI offset adjustment

(1) AM siginal selection /AMI signal selection

Select the signals to be output from the AM and AMI terminals among those shown below.

Item	Function code	Data	Description	Full-scale value
		00	Output frequency	0 to maximum frequency (Hz) (*3)
		01	Output current	0 to 200%
		02	Output torque (*1)	0 to 200%
		04	Output voltage	0 to 133% (75% of full scale is
				equivalent to 100%)
		05	Input power	0 to 200%
		06	Electronic thermal	0 to 100%
[AM] siginal			overload
		07	LAD frequency	0 to maximum frequency (Hz)
selection /	C028/C029
				0ºC to 200ºC (0ºC is output when the
[AMI] siginal		09	Motor temperature
				motor temperature is 0ºC or less.)
selection
		10	Heat sink temperature	0ºC to 200ºC (0ºC is output when the
				motor temperature is 0ºC or less.)
		11	Output torque (signed)	(Output only from the AM terminal) 0
				to 200% (*1) (*2)
		13	General analog YA (1) (*4)	(Output only from the AM terminal) 0
				to 100%
		14	General analog YA (2) (*4)	(Output only from the AMI terminal) 0
				to 100%

*1 This signal is output only when the V/F characteristic curve selection (see Section 4.2.18) is the sensorless vector control, 0Hz-range sensorless vector control, or vector control with sensor.

*2 The specifications of the output torque (signed) are as follows:

AM output (V)

10

5

When the AM gain (C106) is 100%

When the AM gain (C106) is 200%

When the AM offset (C109) is 50%

Torque (%)

0100 200

*3 The actually detected output frequency is output when the V/F characteristic curve selection is the vector control with sensor (A044 = 05).

*4 For detail of the function, refer “Programing software EZ-SQ user manuaru”.

(2) AM/AMI adjustment

Adjust the inverter output gain for the external meters connected to the AM and AMI terminals.

Item	Function code	Range of data	Description
Setting of the gain for AM monitoring	C106	50. to 200. (%)	Setting of the gain for AM monitoring
Setting of the offset for AM monitoring	C109	0 to 100 (%)	Setting of the offset for AM monitoring
Setting of the gain for AMI monitoring	C107	50. to 200. (%)	Setting of the gain for AMI monitoring
Setting of the offset for AMI monitoring	C110	0 to 100 (%)	Setting of the offset for AMI monitoring

Note: The offset data is in percentage (%).

(Example) When the current range of AMI terminal output is 4 to 20 mA (default), the offset of 4 mA is 20%.

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