Fuji Electric FRN0001C2S-2A FRN0002C2S-2A FRN0004C2S-2A FRN0006C2S-2A FRN0010C2S-2A FRN0012C2S-2A FRN0020C2S-2A FRN0025C2S-2A FRN0033C2S-2A FR Instruction Manual page 154

The UP/DOWN control is available in two modes--one mode (H61 = 0) in which the initial
value of the reference frequency is fixed to "0.00" at the start of the UP/DOWN control and the
other mode (H61 = 1) in which the reference frequency applied in the previous UP/DOWN
control applies as the initial value.
When H61 = 0, the reference frequency applied by the previous UP/DOWN control has been
cleared to "0," so at the next restart (including powering on), use the UP terminal command to
accelerate the speed as needed.
When H61 = 1, the inverter internally holds the current output frequency set by the UP/DOWN
control and applies the held frequency at the next restart (including powering on).
At the time of restart, if an UP or DOWN terminal command is entered before the
internal frequency reaches the output frequency saved in the memory, the inverter
saves the current output frequency into the memory and starts the UP/DOWN
control with the new frequency. The previous frequency held will be overwritten by
the current one.
Initial frequency for the UP/DOWN control when the frequency command source is switched
When the frequency command source is switched to the UP/DOWN control from other
sources, the initial frequency for the UP/DOWN control is as listed below:
Frequency command
source
Other than UP/DOWN
(F01, C30)
PID conditioner
Multistep frequency
Communications link
To enable the UP and DOWN terminal commands, you need to set frequency
command 1 (F01) or frequency command 2 (C30) to "7" beforehand.
Switching command
Select frequency
command 2/1 (Hz2/Hz1)
Cancel PID control
(Hz/PID)
Select multistep
frequency (SS1, SS2,
SS4 and SS8)
Enable communications
link via RS-485 (LE)
5-55
Initial frequency for UP/DOWN control
H61 = 0
Reference frequency given by the
frequency command source used just
before switching
Reference frequency given by PID control
(PID controller output)
Reference
frequency given Reference
by the frequency frequency at the
command source time of previous
used just before
UP/DOWN control
switching
H61 = 1