Danfoss VLT CDS 803, Design Manual

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PCB Printed circuit board
PELV Protective extra low voltage
Regen Regenerative terminals
RPM Revolutions per minute
s Second
T
LIM
Torque limit
U
M,N
Nominal motor voltage
V Volts
Table 1.2 Abbreviations
1.5 Additional Resources
•
VLT
®
Compressor Drive CDS 803 Quick Guide
provides basic information on mechanical
dimensions, installation and programming.
•
VLT
®
Compressor Drive CDS 803 Programming
Guide provides information on how to program
and includes complete parameter descriptions.
•
VLT
®
Compressor Drive CDS 803 Design Guide
entails all technical information about the
frequency converter and customer design and
applications.
•
MCT 10 Set-up Software enables the user to
configure the frequency converter from a
Windows
™
based PC environment.
Danfoss technical literature is available in print from a local
Danfoss Sales Office or at:
vlt-drives.danfoss.com/Support/Technical-Documentation/
1.6 Definitions
Frequency converter
I
VLT,MAX
The maximum output current.
I
VLT,N
The rated output current supplied by the frequency
converter.
U
VLT, MAX
The maximum output voltage.
Input
The connected compressor
can start and stop with LCP
and the digital inputs.
Functions are divided into 2
groups.
Functions in group 1 have
higher priority than
functions in group 2. Group
1 Reset, coasting stop, reset
and coasting stop, quick-
stop, DC braking, stop,
and the [Off] key.
Group
2
Start, pulse start,
reversing, start reversing,
jog, and freeze output
Table 1.3 Control Commands
Compressor
f
JOG
The motor frequency when the jog function is activated
(via digital terminals).
f
M
The motor frequency.
f
MAX
The maximum compressor frequency.
f
MIN
The minimum compressor frequency.
f
M,N
The rated motor frequency (nameplate data).
I
M
The motor current.
I
M,N
The rated motor current (nameplate data).
n
M,N
The nominal motor speed (nameplate data).
P
M,N
The rated motor power (nameplate data).
U
M
The instant motor voltage.
U
M,N
The rated motor voltage (nameplate data).
Break-away torque
175ZA078.10
Pull-out
rpm
Torque
Illustration 1.1 Break-away Torque
η
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
Table 1.3 .
Stop command
See control commands, Table 1.3 .
References
Analog reference
A signal transmitted to the analog inputs 53 or 54, can be
voltage or current.
Introduction
VLT
®
Compressor Drive CDS 803
6 Danfoss A/S © 12/2015 All rights reserved. MG18N202
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