e3
0b
a0
62
.1
5
State 1
13-51.0
13-52.0
State 2
13-51.1
13-52.1
Start
event P13-01
State 3
13-51.2
13-52.2
State 4
13-51.3
13-52.3
Stop
event P13-02
Stop
event P13-02
Stop
event P13-02
Illustration 10: Order of Execution when 4 Events/Actions are Programmed
3.2.2.9.1 Comparators
Comparators are used for comparing continuous variables (output frequency, output current, analog input, and so on) to fixed pre-
set values.
Par. 13-11
Comparator Operator
=
TRUE longer than.
. . .
. . .
Par. 13-10
Comparator Operand
Par. 13-12
Comparator Value
e3
0b
b6
72
.1
0
Illustration 11: Comparators
3.2.2.9.2 Logic Rules
Combine up to 3 boolean inputs (TRUE/FALSE inputs) from timers, comparators, digital inputs, status bits, and events using the
logical operators AND, OR, and NOT.
. . .
. . .
. . .
. . .
Par. 13-43
Logic Rule Operator 2
Par. 13-41
Logic Rule Operator 1
Par. 13-40
Logic Rule Boolean 1
Par. 13-42
Logic Rule Boolean 2
Par. 13-44
Logic Rule Boolean 3
e3
0b
b6
73
.1
0
Illustration 12: Logic Rules
3.3 VLT® Compressor Drive CDS 803 Protections
The drive has a range of built-in protection functions to protect itself and the compressor during operation. For details of any re-
quired setup, in particular compressor parameters, refer to the VLT® Compressor Drive CDS 803 Programming Guide listed in
for parameter details and programming.
3.3.1 Mains Input Protection
The VLT® Compressor Drive CDS 803 offers various built-in input protections for the 3-phase power terminals L1, L2, and L3.
3.3.1.1 Mains Supply Failure, Momentary Dropouts, and Surges
During a mains dropout, the drive keeps running until the internal DC-link voltage drops below the minimum stop level, which is
typically around 15% or more below the lowest rated supply voltage of the drive. The mains voltage before the dropout and the
motor load determine how long it takes for the drive to coast.
AJ330233902305en-000201 / 130R0596 | 19
Danfoss A/S © 2021.05
Product Overview
VLT® Compressor Drive CDS 803
Design Guide
Содержание VLT CDS 803
Страница 1: ...Design Guide VLT Compressor Drive CDS 803 6 30 kW vlt drives danfoss com...
Страница 2: ......
