DA 820 LPC • DA 820 • ECT 820 • DCT 820 Fans
26
Technical User Guide
4.10 Cable plans and circuit diagrams
4.10.1 General information about circuit diagrams
Symbols are in accordance with the IEC/EN 60617 standard. The classification of the ("letter codes") on the
symbols is in accordance with the IEC/EN 81346-2 standard. Reference designations are in accordance with
IEC/EN 81346-1:2001 structuring principles and reference designations. This standard indicates structured
methods for naming electrotechnical systems.
4.10.1.1 Color code
Letter Code
Color
Standard
BK
Black
Color coding on wires are in accor-
dance with standard IEC 60757:
Letter codes to identify colors used
on drawings, diagrams, labelling,
etc.:
BN
Brown
RD
Red
OG
Orange
YE
Yellow
GN
Green
BU
Blue (incl. light blue)
VT
Violet (purple red)
GY
Grey (slate)
WH
White
PK
Pink
GD
Gold
TQ
Turquoise
SR
Silver
GNYE
Green-and-yellow
4.10.1.2 Power supply isolator
Power supply isolator
The installation of a power supply isolator is required for each motor and
motor control.
4.10.1.3 Letter Code
The letter codes used in accordance with standard IEC/EN61346-2.
-F
-K
-M
-Q
-S
-T
-W
Protective equipment RCCB /
Initial fuse Protective motor
switch
Controller
Contactor
Fan
Motor
Power supply
isolator
Switch
Motor con-
troller
Cable