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Chapter 4
4.2.81 FM terminal
You can monitor the inverter output frequency and output current via
the FM terminal on the control circuit terminal block. The FM terminal
is a pulse output terminal.
(1) FM siginal selection
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
00
01
02
03
04
05
C027
06
07
08
09
10
12
*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
slected
Cycle (T): Fixed (6.4 ms)
Duty (t/T): Varied
*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
Digital current monitor reference value
*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
[FM] terminal analog meter adjustment
Description
Output frequency (See example 1.)
Output current (See example 1.)
Output torque (*1) (See example 1.)
Digital output frequency (See example 2.)
Output voltage (See example 1.)
Input power (See example 1.)
Electronic thermal overload (See example 1.)
LAD frequency (See example 1.)
Digital current monitoring (See example 2.)
Motor temperature (See example 1.)
Heat sink temperature (See example 1.)
General analog YA (0) (See example 1.)
t
T
Function code
C030
Function code
C105
Explanation of Functions
C027: [FM] siginal selection
b081: [FM] terminal analog meter
C030: Digital current monitor reference
C105: [FM] terminal analog meter
0 to maximum frequency (Hz) (*3)
0 to 200%
0 to 200%
0 to maximum frequency (Hz) (*3)
0 to 133% (75% of full scale is equivalent to
100%)
0 to 200%
0 to 100%
0 to maximum frequency (Hz)
(*2)
0ºC to 200ºC (0ºC is output when the motor
temperature is 0ºC or less.)
0ºC to 200ºC (0ºC is output when the motor
temperature is 0ºC or less.)
0 to 100%
(Example 2) When 03 or 08 us selected
Cycle (T): Varied
Duty (t/T): Fixed (1/2)
Range of data
"0.2 x rated current" to
"2.0 x rated current" (A)
Range of data
50. to 200. (%)
4-73
Related code
adjustment
value
adjustment
Full-scale value
t
T
Description
Setting of the current for
1,440 Hz output
Description
Setting of the gain for FM
monitoring
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