5.3 Description of Function Codes 5.3.2 E codes (Extension terminal functions)
• When process control is performed by the PID processor integrated in the inverter:
The terminal command Hz/PID (“Cancel PID control”) can switch PID control between enabled (process is to be
controlled by the PID processor) and disabled (process is to be controlled by the manual frequency setting). In
either case, the combination of the “PID control” (J01) or “Selection of normal/inverse operation for frequency setting
1” (C53) and the terminal command IVS determines the final operation as listed in Table 5.3-4 and Table 5.3-5.
Table 5.3-4 When PID control is enabled: The normal/inverse operation selection for the PID processor output
(reference frequency) is as follows.
PID control (Mode selection) (J01)
1: Enable (normal operation)
2: Enable (inverse operation)
Table 5.3-5 When PID control is disabled: The normal/inverse operation selection for the manual reference
frequency is as follows.
Selection of normal/inverse operation
for frequency setting 1 (C53)
When process control is performed by the PID control facility integrated in the inverter, the “IVS” is used
to switch the PID processor output (reference frequency) between normal and inverse, and has no effect
on any normal/inverse operation selection of the manual frequency setting.
( Function codes J01 to J19, J57 to J62)
Interlock “IL” assignment (Function code data = 22)
In a configuration where a magnetic contactor (MC) is installed in the power output (secondary) circuit of the inverter,
the momentary power failure detection feature provided inside the inverter may not be able to accurately detect a
momentary power failure by itself. Using a digital signal input with the interlock command IL assures the accurate
detection. ( Function code F14)
No momentary power failure has occurred.
A momentary power failure has occurred.
(Restart after a momentary power failure enabled)
Restart mode after momentary power failure (mode selection)
Cancel torque control “Hz/TRQ” assignment (Function code data = 23)
When torque control is enabled (H18 = 2 or 3), assigning the terminal command “Hz/TRQ” (Cancel torque control)
to any of the general-purpose digital input terminals (data = 23) enables switching between speed control and torque
control.
Cancel torque control signal “Hz/TRQ”
Cancel torque control (Enable speed control)
Select link operation (RS-485, BUS option) “LE” assignment (Function code data = 24)
Turning this terminal command “LE” ON gives priority to frequency commands or run commands received via the
RS-485 communications link (H30) or the fieldbus option (y98).
No LE assignment is functionally equivalent to the “LE” being ON.
( Function codes H30, y98)
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