122
Monitor display and monitor output signal
4.11.3 Reference of the terminal FM (pulse train output) (Pr. 55, Pr. 56)
The pulse train output terminal FM is available for monitor output.
Set the reference of the signal output from terminal FM.
Parameter
Number
Name Initial Value Setting Range Description
55 ∗1
Speed monitoring
reference
3000 r/min
0 to 12000 r/min/
0 to 8000 r/min
∗2∗3
Full-scale value when rotation speed monitor
value is output to terminal FM.
56 ∗1
Current monitoring
reference
Mortor
rated current
∗4
0 to 500A
Full-scale value when current monitor value is
output to terminal FM.
The above parameters can be set when Pr. 160 Extended function display selection = "0". (Refer to page 144)
∗1 The above parameters allow their settings to be changed during operation in any operation mode even if "0" (initial value) is set in Pr. 77 Parameter write
selection.
∗2 Differs according to capacities. (0.2K to 2.2K/3.7K)
∗3 If a value exceeding 3000r/min is set, the actual rotation speed will be limited at 3000r/min.
∗4 Refer to page 272 for the rated motor current.
(1) Speed monitor reference (Pr. 55)
Set the full scale value when outputting the speed monitor from terminal FM.
Set the speed when the optional speed meter (1mA analog meter), which is connected to the terminal FM and SD,
shows 1500 r/min or 3000 r/min (shows full scale).
Set the rotation speed (set speed) at which the pulse speed of the FM output is 1440 pulses/s.
The pulse speed and rotation speed are proportional to each other. (The maximum pulse train output is 2400 pulses/s.)
(2) Current monitor reference (Pr. 56)
Set the full scale value when outputting the current monitor from terminal FM.
Set the output current at which the pulse speed of the FM output is 1440 pulses/s.
The pulse speed and output current monitor value are proportional to each other. (The maximum pulse train output is
2400 pulses/s.)
1500r/min
Rotation speed
3000r/min
(Initial value)
2400
1440
Setting range of Pr. 55
Pulse speed (pulses/s)
Rated current
(initial value)
500A
Setting range of Pr. 56
Pulse speed (pulses/s)
2400
1440
