9.2 Details of Function Codes
9-53
Chap. 9 FUNCTION CODES
The 2nd motor imposes functional restrictions on the following function codes. Confirm the
settings of those function codes before use.
Functions Restrictions Related function codes
Non-linear V/f pattern Disabled. Linear V/f pattern only H50 to H53
Starting frequency Starting frequency holding time not
supported.
F24
Stop frequency Stop frequency holding time not
supported.
F39
Overload early warning Disabled. E34 and E35
UP/DOWN control Disabled. Fixed at default setting 0. H61
PID control Disabled. J01
Braking signal Disabled. J68 to J72
Software current limiter Disabled. F43 and F44
Rotation direction limitation Disabled. H08
To run the 2nd motor with the M2/M1 terminal command and a run command (e.g.,
FWD), the input of the M2/M1 should not be delayed 10 ms or more from that o
the run command. If the delay exceeds 10 ms, the 1st motor will be driven by
default.
Enable DC braking -- DCBRK
(Function code data = 13)
This terminal command gives the inverter a DC braking command through the inverter’s
digital input.
(Refer to the descriptions of F20 to F22.)
UP (Increase output frequency) and DOWN (Decrease output frequency) commands
-- UP and DOWN
(Function code data = 17, 18)
• Frequency setting
When the UP/DOWN control is selected for frequency setting with a run command ON,
turning the UP or DOWN terminal command ON causes the output frequency to increase or
decrease, respectively, within the range from 0 Hz to the maximum frequency as listed below.
UP DOWN
Data = 17 Data = 18
Function
OFF OFF Keep the current output frequency.
ON OFF
Increase the output frequency with the acceleration time
currently specified.
OFF ON
Decrease the output frequency with the deceleration time
currently specified.
ON ON Keep the current output frequency.
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