Delta Electronics VFD-M manual External Up/Down Selection

Chapter 4 Parameters

These two parameters are used to set the analog input delay filter in set point or feedback

signal.
Pr. 136	Sleep Period		Unit: 0.1sec
	Settings	0.0 to 6550.0 sec	Factory Setting: 0.0
Pr. 137	Sleep Frequency		Unit: 0.10Hz
	Settings	0.00 to 400.0 Hz	Factory Setting: 0.0
Pr. 138	Wake Up Frequency		Unit: 0.10Hz
	Settings	0.00 to 400.0 Hz	Factory Setting: 0.0

These parameters determine the sleep functions of the AC drive. If the command frequency falls below the sleep frequency, for the specified time in Pr.136, then drive output is turned off until the command frequency rises above Pr.138. Please see the below diagram.

	Frequency Command
Pr. 138
Wake Up		Actual output frequency
Frequency
Pr. 137
Sleep
Frequency
		Sleep Period	0Hz
		Pr. 136

Pr. 139 Treatment for Counter Attained

Factory Setting: 00

Settings 00 Continue Operation

01 Stop Immediately and display E.F.

This parameter sets the procedure for the AC drive to follow once the internal counter attains the setting value in Pr.96.

Pr. 140 External Up/Down Selection

Factory Setting: 00

Settings 00 Fixed Mode (keypad)

01By Accel or Decel Time

02Reserved

This parameter is used to change the Master Frequency externally with the Multifuction Input Terminals. If any two parameters in the group Pr.39-Pr.42 are set to 14 and 15, and Pr.140 is set to 01, the up/down frequency operation is initiated as the contact closes and according to the time of acceleration/deceleration.

Revision May 2008, ME14, SW V3.04 4-81