117
VFD Single Channel Analog Output Card and Jumper Settings.
Definitions of the terms used in the Motor Speed screen.
Term
Definition
Range
Proportional
Adjusts the speed based on how far the control
0:1000
Constant
parameter currently is from the control setpoint. A higher
P term causes a greater speed changes when far from the setpoint.
Integration Time
Adjusts speed based on how rapidly the
0:1000 sec
control parameter should approach the setpoint. A higher
I term causes a slower approach to the setpoint when the
control parameter is not changing.
Derivative Time
Adjusts the speed based on the past value
0:1000 sec
of the control parameter. A large D term may result in large
fluctuations in the speed.
Care must be taken to keep D as low as possible.
Control Mode
The control for the VFD.
Automatic/Manual/Tuning
Automatic lets the VILTech select proper speed.
Manual Speed
The VFD speed when Manual mode is selected.
50-100 PCT
VFD Control Type
The 4-20mA control signal may be set to direct or reverse.
Direct/Reverse
When set to Direct, 4mA is low speed and 20mA is high speed.
When set to Reverse, 20mA is the low speed and 4mA is high speed.
This control is useful for testing purposes.
Summary of Contents for Vilter VilTech
Page 1: ...VILTech micro controller Operation and service manual ...
Page 2: ...2 ...
Page 10: ...10 Notes Page ...
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Page 154: ...154 Alarm and Failure Data ...
Page 155: ...155 Alarm and Failure Data Continued ...
Page 156: ...156 Alarm and Failure Data Continued ...
Page 158: ...158 Compressor State Table ...
Page 159: ...159 Last RECIPStart Status Table ...
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