Delta VFD370B43A User Manual

Chapter 5 Parameters_VFD-B Series
Revision 10/2005, BE13, SW V4.08 5-113
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When the output frequency reaches this parameter value, the auxiliary motor will be stopped. There must
be a minimum of 5 Hz difference between the start frequency and stop frequency of auxiliary motor. (Pr.11-
01-Pr.11-02) > 5 Hz.
11 - 03
Time Delay before Starting the Auxiliary Motor
Unit: 0.1
Settings 0.0 to 3600.0 sec Factory Setting: 0.0
11 - 04
Time Delay before Stopping the Auxiliary Motor
Unit: 0.1
Settings 0.0 to 3600.0 sec Factory Setting: 0.0
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The number of Multi-function Output terminals set to 16, 17, 18 decides the number of auxiliary motors. The
maximum is three.
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The start/stop frequency of the auxiliary motor must have a minimum of 5Hz difference.
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The start/stop delay time can prevent the AC motor drive from overloaded during starting/stopping.
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These parameters determine the starting sequence of auxiliary motors.
The auxiliary motor started first will be stopped first.
Example: Start sequence: motor 1 -> motor 2 -> motor 3
Stop sequence: motor 1 -> motor 2 -> motor 3
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The flowchart of auxiliary motor start/stop sequence:
Pr.11-01 Start-up frequency = 50 Hz, Pr.11-02 Stop frequency = 20 Hz
Pr.11-03 Time delay before start up = 10 sec, Pr.11-04 Time delay before stopping = 5 sec
H
50
11-03
H 20
11-04
Output frequency of
master motor
Output Freq.
Output Freq.
NO NO
NO
NO
Start delay timer
of auxiliary
motor begins
Stop delay timer
of auxiliary
motor begins
Counter
10 sec
Counter 5 sec
Start the
auxiliary motor
in order
Stop the
auxiliary motor
in order
YES
YES
YES
YES

Delta VFD370B43A Specifications

General

Brand	Delta
Model	VFD370B43A
Category	DC Drives
Language	English