Chapter 12 Description of Parameter Settings
MH300
Sleep Mode Function Setting
Default: 0
Settings 0: Refer to PID output command
1: Refer to PID feedback signal
0: The unit for Pr.08-10 and that for Pr.08-11 switch to frequency. The settings then are between
0.00–599.00 Hz.
1: The unit for Pr.08-10 and that for Pr.08-11 switch to percentage. The settings then are between
0.00–200.00%.
Default: 50.0
Settings 0.0–200.0%
Reduces the reaction time from sleep to wake-up.
The wake-up integral limit for the drive prevents suddenly running at high speed when the drive
wakes up. The wake-up integral frequency limit = (Pr.01-00 × Pr.08-19%)
Enable PID to Change the Operation Direction
Default: 0
Settings 0: Operation direction can be changed
1: Operation direction cannot be changed
Default: 0.00
Settings
0.00–600.00 sec.
Refer to Pr.08-18 for more information.
Default: 2
Settings bit 0 = 1, PID running in reverse follows the setting for Pr.00-23.
bit 0 = 0, PID running in reverse refers to PID’s calculated value.
bit 1 = 1, two decimal place of PID Kp
bit 1 = 0, one decimal place of PID Kp
bit 0 = 1: Enable PID running in reverse.
bit 0 = 0: If the PID calculated value is positive, the direction is forward. If the PID calculated
value is negative, the direction is reverse.
When the setting of bit 1 changes, the Kp gain does not change. For example: Kp = 6, when
Pr.08-23 bit 1 = 0, Kp = 6.0; when Pr.08-23 bit 1 = 1, Kp = 6.00.
There are three scenarios for sleep and wake-up frequency.
1) Frequency Command (PID is not in use, Pr.08-00 = 0, only works in VF mode)
When the output frequency ≤ the sleep frequency, and the drive reaches the preset sleep
time, then the the drive is in sleep mode (0 Hz). When the frequency command reaches the wake-
up frequency, the drive starts to count the wake-up delay time. When the drive reaches the wake-
up delay time, it starts to catch up to reach the frequency command value by the acceleration
time.
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