Delta VFD2A8ME21ANNAA

Chapter 12 Description of Parameter SettingsME300
12.1-08-9
 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 drive is in sleep mode. 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, the
drive begins acceleration time to reach the Frequency command value.
Frequency
Command
Actual Output Frequency
Pr. 08-11
Pr. 08-10
Sleep
Reference Point
Wake up
eference Point
-
R
Pr. 08-12
0 Hz
Sleep Time
Frequency command
Actual output frequency
Pr. 08-22
Wake-up
Delay
Time
2) Frequency Command Calculation of the Internal PID
When the PID calculation reaches the sleep frequency, the drive starts to count the sleep time
and the output frequency starts to decrease. If the drive exceeds the preset sleep time, it goes
directly to sleep mode (0 Hz). If the drive does not reach the sleep time, it remains at the lower
limit (if there is a preset lower limit.), or it remains at the lowest output frequency set for Pr.01-07
and waits to reach the sleep time before it goes into sleep mode (0 Hz).
When the calculated Frequency command reaches the wake-up frequency, the drive starts to
count the wake-up delay time. Once it reaches the wake-up delay time, the drive starts the
acceleration time to reach the PID Frequency command value.