Chapter 4 Explanation of Functions

4.2.81 FM terminal

 

Related code

 

C027: [FM] siginal selection

 

You can monitor the inverter output frequency and output current via

b081: [FM] terminal analog meter

the FM terminal on the control circuit terminal block. The FM terminal is

adjustment

C030: Digital current monitor reference

a pulse output terminal.

value

(1) FM siginal selection

C105: [FM] terminal analog meter

adjustment

Select the signal to be output from the FM terminal among those shown below.

If you select "03" (digital output frequency), connect a digital frequency counter to the FM terminal. To monitor other output signals, use an analog meter.

Item

Data

Description

Full-scale value

 

00

Output frequency (See example 1.)

0 to maximum frequency (Hz) (*3)

 

01

Output current (See example 1.)

0 to 200%

 

02

Output torque (*1) (See example 1.)

0 to 200%

 

03

Digital output frequency (See example 2.)

0 to maximum frequency (Hz) (*3)

 

04

Output voltage (See example 1.)

0 to 133% (75% of full scale is equivalent

 

to 100%)

 

 

 

 

05

Input power (See example 1.)

0 to 200%

C027

06

Electronic thermal overload (See example

0 to 100%

1.)

 

 

 

 

07

LAD frequency (See example 1.)

0 to maximum frequency (Hz)

 

08

Digital current monitoring (See example 2.)

(*2)

 

09

Motor temperature (See example 1.)

0ºC to 200ºC (0ºC is output when the

 

motor temperature is 0ºC or less.)

 

 

 

 

10

Heat sink temperature (See example 1.)

0ºC to 200ºC (0ºC is output when the

 

motor temperature is 0ºC or less.)

 

 

 

 

12

General analog YA (0) (See example 1.)

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.

(Example 1) When 00, 01, 02, 04, 05, 06, 07, 09, 10 or 12 is (Example 2) When 03 or 08 us selected slected

t

t

T

T

Cycle (T): Fixed (6.4 ms)

Cycle (T): Varied

Duty (t/T): Varied

Duty (t/T): Fixed (1/2)

*2 Digital current monitoring

If the output current matches the digital current monitor reference value (C030), the FM terminal will output a signal indicating 1,440 Hz.

Item

Function code

Range of data

Description

Digital current monitor reference value

C030

"0.2 x rated current" to

Setting of the current for

"2.0 x rated current" (A)

1,440 Hz output

 

 

*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 “Programming software EZ-SQ user manual”.

*5 When b086 (frequency scaling conversion facto is set, the value converted by gain is diplayed. (refer 4.1.7 Scaled output frequency monitoring)

(2) FM terminal analog meter adjustment

Adjust the inverter output gain for the external meter connected to the FM terminal.

Item

Function code

[FM] terminal analog meter

C105

adjustment

 

Range of data

50. to 200. (%)

Description

Setting of the gain for FM monitoring

4 - 73

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Hitachi SJ700-2 FM terminal, Pulse output terminal, FM siginal selection, Function code Range of data Description