Ec+ Concept For Asynchronous And Pm Motors - Danfoss VLT DriveMotor FCM 106 Design Manual

Application Examples
Set the Smart Logic Control in 13-00 SL Controller Mode to
[1] ON.
Start
command
4 4
Stop
command
Event 4 False (0)
Action 4 No Action (1)
Illustration 4.13 Set Event and Action

4.4 EC+ Concept for Asynchronous and PM Motors

To ensure effective energy savings, system designers take
the entire system into account. The decisive factor is not
the efficiency of individual components, but rather the
efficiency of the overall system. There is no benefit in high-
efficiency motor design, if other components in the system
work to reduce the overall system efficiency. The EC+
concept enables automatic performance optimisation for
components regardless of source. Therefore the system
designer is free to select an optimal combination of
standard components for frequency converter, motor, and
fan/pump and still achieve optimal system efficiency.
Example
A practical HVAC example is the EC version of plug fans
with external-rotor motors. To achieve the compact
construction, the motor extends into the intake area of the
impeller. This intrusion impacts the efficiency of the fan
negatively, and therefore reduces the efficiency of the
entire ventilation unit. In this case, high motor efficiency
does not lead to high system efficiency.
Advantages
The flexibility of EC+ ensures that such reduction of system
efficiency is avoided, and provides the system designer
and the end user with the following benefits:
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VLT DriveMotor FCP 106 and FCM 106 Design Guide
Event 1 True (1)
Action 1 Select Preset (10)
State 0
Event 3 Time Out (30)
State 2
Action 3 Select Preset ref. (11)
MG03M102 - 08/2015
Start/stop command is applied on terminal 18. If stop
signal is applied the frequency converter ramps down and
enters free mode.
Event 2 On Reference (4)
Action 2 Start Timer (29)
State 1
•
Superior system efficiency thanks to a
combination of individual components with
optimum efficiency.
•
Free choice of motor technology: asynchronous
or PM.
•
Manufacturer independency in component
sourcing.
•
Easy and cost efficient retrofitting of existing
systems.
FCP 106 and FCM 106 with EC+ enable the system
designer to optimise system efficiency, without losing
flexibility and reliability.
•
The FCP 106 can be mounted on either an
asynchronous or a permanent magnet motor.
•
The FCM 106 is delivered with an asynchronous
motor or a permanent magnet motor. The use of
standard motors and standard frequency
converters ensures long-term availability of
components.
Programming of both FCP 106 and FCM 106 is identical to
programming of all other Danfoss frequency converters.