Sleep mode, Operation, Requirements – Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual User Manual

Page 160: Conditions to start/restart

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Sleep Mode

160

Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013

Sleep Mode

Operation

The basic operation of the Sleep-Wake function is to Start (wake) the drive when
an analog signal is greater than or equal to the user specified [Wake Level], and
Stop

(sleep) the drive when an analog signal is less than or equal to the user

specified [Sleep Level]. Setting [Sleep-Wake Mode] to “Direct” enables the sleep
wake function.

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

Table 16 Conditions Required to Start Drive

(1)(2)(3)

(1)

When power is cycled, if all conditions are present after power is restored, restart will occur.

(2)

If all conditions are present when [Sleep-Wake Mode] is “enabled,” the drive will start.

(3)

The active speed reference is determined as explained in the User Manual. The Sleep/Wake function and the
speed reference may be assigned to the same input.

(4)

Command must be issued from HIM, TB or network.

(5)

Run Command must be cycled.

(6)

Signal does not need to be greater than wake level.

!

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.

Input

After Power-Up

After a Drive Fault

After a Stop Command

Reset by Stop-CF,
HIM or TB

Reset by Clear
Faults (TB)

HIM or TB

Stop

Stop Closed
Wake Signal

Stop Closed
Wake Signal
New Start or Run Cmd.

(4)

Stop Closed
Wake Signal

Stop Closed
Analog Sig. > Sleep Level

(6)

New Start or Run Cmd.

(4)

Enable

Enable Closed
Wake Signal

(4)

Enable Closed
Wake Signal
New Start or Run Cmd.

(4)

Enable Closed
Wake Signal

Enable Closed
Analog Sig. > Sleep Level

(6)

New Start or Run Cmd.

(4)

Run
Run For.
Run Rev.

Run Closed
Wake Signal

New Run Cmd.

(5)

Wake Signal

Run Closed
Wake Signal

New Run Cmd.

(5)

Wake Signal

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