N3 Drive Operations Manual
A (Advanced) Parameter Details; A050 – A056 Cont. 55
ON: The inverter is controlled by the keypad regardless of the settings of b000 (Run source) and b004
(Frequency source). The RS485 communication can still read and write the inverter parameters.
11. 0013: (Disable acceleration and deceleration) When ON, acceleration and deceleration is disabled until the
input is turned OFF. The function is illustrated below.
Operating
Signal
Disable
Acc./ Dec.
Output Frequency
Fig. 19.7
12. 0014 and 0015: (Up / Down Function)
Actual Acc /Dec time is based on the following settings:
(1) To use the Up / Down function set b004 = 3. The other frequency signals are not valid.
(2) When A058 = 0000 and A060 = 0000, the inverter accelerates to the preset value of A061, and then
maintains a constant speed. When the inverter receives either the Up or Down command, it will accelerate
or decelerate until the command is released. The inverter runs at the speed setting at the time of release.
When the inverter receives a stop command, the inverter will either ramp or free - run to stop as determined
by the setting of b003. The frequency at the stop time will be stored in A061. The Up / Down key is invalid
when the inverter is stopped. The preset parameters are modified through the keypad.
(3) When A058 = 0001, the inverter will operate from 0Hz when the Run command is ON. The Up / Down
and stop command action is the same as above. The next operation will start at 0 Hz.
(4) The Up /Down signals are invalid if pressed simultaneously.
(5) When a Run command is given, the inverter will accelerate to the preset frequency set by A061 and
maintain that speed. If the step frequency A060 is set to a given value (≠0), and the Up or Down terminal
is turned ON for less than 2 seconds, the set frequency will accelerate or decelerate to a new value equal
to A061± A060 which will become the new set frequency. Each time the Up or Down terminal is turned
ON for less than 2 seconds the set frequency will change by the value of A060 (See fig. on next page).
If the Up / Down signal is maintained over 2 seconds, or if A060 = 0, the frequency will continuously
accelerate or decelerate toward the frequency limits until the signal is released.
The Up / Down functional range is subject to the set frequency upper and lower frequency limits, b005
and b006.
Cont.
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