Delta Electronics VFD037CH23A-21 — параметры настройки для управления двигателем переменного тока [348/638]

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Chapter 12 Description of Parameter SettingsCH2000 Series

12-132

 function is the AC motor drive decelerates to stop after momentary power loss. When the

momentary power loss occurs, this function can be used for the motor to decelerate to 0 speed with

deceleration stop method. When the power is on again, motor will run again after DEB return time.

(has applied on high-speed spindle)

Status 1: Insufficient power supply due to momentary power-loss/unstable power (due to low

voltage)/sudden heavy-load

DCBUS voltage

dEb activation level

Soft start relay

at power side

dEb function

activated

dEb return time

Pr07-13 Decel. time at momentary

power loss (dEb function)

Level for soft start relay to be ON

0Hz

07-14

Output frequency

Note (1)When Pr07-14 is set to 0, the motor drive will stop and will not accelerate to the frequency before dEb even

the power is on again. But when Pr07-14 is NOT set to 0, then a command of zero speed will be sent to wait for power

on.

Note (2) dEb activation level is when DCBUS voltage level is lower than (230V series: Lv level +20Vdc)

(460V series: Lv level +40Vdc)

Status 2: unexpected power off, such as momentary power loss

DCBUS voltage

Lv level

Soft start relay

at power side

Output frequency

dEb return time

Pr.07-13 Decel. time selection at

momentary power loss

dEb function activated

Level for soft start relay to be ON

07-14

NOTE

For example, in textile machinery, you will hope that all the machines can be decelerated to stop to prevent broken stitching

when power loss. In this case, the host controller will send a message to the AC motor drive to use dEb function with

deceleration time via EF.