5.3 Description of Function Codes 5.3.2 E codes (Extension terminal functions)
Cancel line speed control -- “Hz/LSC” (Function code data = 70)
Turning ON Hz/LSC cancels line speed control. This disables the frequency compensation of PI operation, resulting
in no compensation for a take-up roll getting bigger and an increase in the winding speed. Use this signal to
temporarily interrupt the control for repairing a thread break, for example.
Enable line speed control (depending on d41 setting)
Cancel line speed control(V/f control, without compensation for a take-up roll getting
bigger)
( Function code d41)
Hold line speed control frequency in the memory -- “LSC-HLD” (Function code data = 71)
If “LSC/HLD” is ON under line speed control frequency, stopping the inverter (including an occurrence of an alarm
and a coast to stop command) or turning OFF “Hz/LSC” saves the current frequency command compensating for
a take-up roll getting bigger, in the memory. At the time of restart, the saved frequency command applies and the
inverter keeps the line speed constant.
Disable (No saving operation)
Enable (Saving the frequency command compensating for a take-up roll getting bigger)
Shutting down the inverter power during operation stop loses the frequency compensation data saved in
the memory. At the time of restart, therefore, the inverter runs at the frequency without compensation so
that a large overshoot may occur.
Input during operation with commercial power supply (motor 1 to 4) “CRUN-M1”, “CRUN-M2”, “CRUN-
M3”, “CRUN-M4” (Function code data = 72 to 75)
These terminal commands enable the inverter to count the cumulative run time of motor-1 to motor-4 even when
they are driven by commercial power (not by the inverter). When “CRUN-M1”, “CRUN-M2”, “CRUN-M3”, or “CRUN-
M4” is ON, the inverter judges that the motor-1, motor-2, motor-3, or motor-4 is driven by commercial power,
respectively, and counts the run time of the corresponding motor.
( Function codes H44, H94)
Select droop control “DROOP” assignment (Function code data = 76)
This terminal command “DROOP” toggles droop control on and off.
( Function code H28)
PG alarm cancel “PG-CCL” assignment (Function code data = 77)
PG wire break alarms are ignored when PG alarm cancel “PG-CCL” is ON. If PG wires are switched at such times
as when replacing the motor, alarms are canceled so that wire break is not mistakenly detected. This function is
valid only when using a PG interface card (OPC-PG2, OPC-PMPG).
To Next Page
Loading...
