Sleep mode, Requirements, Conditions to start/restart – Rockwell Automation 20A PowerFlex 70EC/700VC User Manual

Page 100: 96 sleep mode, Sleep/wake operation

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96

Sleep Mode

Sleep Mode

The purpose of the Sleep-Wake function is to Start (wake) the drive when an
analog signal is greater than or equal to the specified [Wake Level], and Stop
(sleep) the drive when an analog signal is less than or equal to the specified [Sleep
Level]. Setting [Sleep-Wake Mode] to “Direct” enables the sleep-wake function to
work as described.

An “Invert” mode also exists, which changes the logic so that an analog value less
than or equal to [Wake Level] starts the drive and an analog value greater than or
equal to [Sleep Level] stops the drive.

Sleep/Wake Operation

Requirements

In addition to enabling the sleep function with [Sleep-Wake Mode], at least one of
the following assignments must be made to a digital input: Enable, Stop-CF, Run,
Run Fwd or Run Rev, and the input must be closed. All normal Start Permissives
must also be satisfied (Not Stop, Enable, Not Fault, Not Alarm, etc.).

Conditions to Start/Restart

70EC

700VC

700H

✔ ✔

!

ATTENTION: Enabling the Sleep-Wake function can cause unexpected
machine operation during the Wake mode. Equipment damage and/or
personal injury can result if this parameter is used in an inappropriate
application. Do Not use this function without considering the table below
and applicable local, national & international codes, standards,
regulations or industry guidelines.

Drive

Run

Wake Up

Wake

Time

Example Conditions

Wake Time = 3 Seconds
Sleep Time = 3 Seconds

Wake Level

Sleep Level

Analog Signal

Go to Sleep

Sleep-Wake

Function

Start

Stop

Sleep Timer

Satisfied

Wake Timer

Satisfied

Wake Level

Satisfied

Sleep Level

Satisfied

Sleep

Time

Wake

Time

Sleep

Time

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