Start-Disable Command; Stop Command; Analog Reference; Binary Reference - Danfoss VLT Programming Manual

1 Introduction
1
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VLT
The efficiency of the frequency converter is defined as the ratio between the power output and the power input.

Start-disable command

A stop command belonging to the group 1 control commands - see this group.

Stop command

See Control commands.
References:

Analog Reference

A signal transmitted to the analog inputs 53 or 54, can be voltage or current.

Binary Reference

A signal transmitted to the serial communication port.
Preset Reference
A defined preset reference to be set from -100% to +100% of the reference range. Selection of eight preset references via the digital terminals.
Pulse Reference
A pulse frequency signal transmitted to the digital inputs (terminal 29 or 33).
Ref
MAX
Determines the relationship between the reference input at 100% full scale value (typically 10 V, 20mA) and the resulting reference. The maximum
reference value set in par. 3-03
Ref
MIN
Determines the relationship between the reference input at 0% value (typically 0V, 0mA, 4mA) and the resulting reference. The minimum reference value
set in par. 3-02 Minimum Reference
Miscellaneous:
Analog Inputs
The analog inputs are used for controlling various functions of the frequency converter.
There are two types of analog inputs:
Current input, 0-20 mA and 4-20 mA
Voltage input, 0-10 V DC ()
Voltage input, -10 - +10 V DC ().
Analog Outputs
The analog outputs can supply a signal of 0-20 mA, 4-20 mA.
Automatic Motor Adaptation, AMA
AMA algorithm determines the electrical parameters for the connected motor at standstill.
Brake Resistor
The brake resistor is a module capable of absorbing the brake power generated in regenerative braking. This regenerative braking power increases the
intermediate circuit voltage and a brake chopper ensures that the power is transmitted to the brake resistor.
CT Characteristics
Constant torque characteristics used for all applications such as conveyor belts, displacement pumps and cranes.
Digital Inputs
The digital inputs can be used for controlling various functions of the frequency converter.
Digital Outputs
8
Maximum Reference
.
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MG.11.C9.02 - VLT
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VLT
® is a registered Danfoss trademark
HVAC Drive Programming Guide