Component Identification; Sample Mechanical Layout Drawing; Reference Designator Definitions - Danfoss VLT Option Panel Instruction Manual

Electrical Installation

Component Identification

Mechanical layout drawings are provided inside the
cover of each unit with an option panel. These
illustrations are intended to provide the installer or
equipment user with component identification and
VFD
DS2
OPTIONAL
F16
ID Definition
24V Option panel 24 Vdc SMPS
CB1 Main circuit breaker
DS1 Main or line disconnect
DS2 Drive disconnect
DF15 Main fused disconnect
DV1 VFD output motor filter
F12 T1 secondary fuse
F13 T1 primary fuse
F15 Line or main fuse
F16 Drive fuse
GD ground terminal
LR1 VFD input line reactor
M1 VFD input contactor
M2 VFD output contactor
M3 Bypass contactor
M4 Motor 1 contactor
M1
M3
M2
GD
GD
Figure 3-7. Sample Mechanical Layout Diagram
Table 3-4. Reference Designator Definitions
Function
Supply 24 Vdc control power to option panel for
internal use only
Provide isolation between option panel and current
protection for incoming mains
Provide isolation between option panel and mains
Provide isolation between VFD and line voltage
Provide isolation between option panel and mains
Output filter to provide filtering for PWM drive output
wave form
Current protection for internal 120 Vac control
circuit
Current protection for line side of 120 Vac internal
control transformer
Provide current protection to option panel
Provide current protection to drive
Customer connection for power grounds to mains
and motor
Input reactor to provide additional input impeadance
to drive
Provide isolation between VFD and line voltage
Provide isolation between VFD and motor
Provide line voltage to motor
Used to select motor 1 operation
location for that specific unit. Figure 3-7 represents
a typical layout drawing. Table 3-4 provides
definitions for drawing reference designators. (Not
all reference designators are shown.)
TB1
24V
ID Definition
M5 Motor 2 contactor
MT1 Motor 1 connection terminal
OL1 Overload for motor 1
OL2 Overload for motor 2
PL2 Bypass indicator light
S1 Bypass selector switch
S103 Auto bypass selection switch
S2 CMS selector switch
T1 120 Vac control transformer
T3 120 Vac control transformer
TB1 Terminal block 1
VFD Variable frequency drive
X55 Customer terminal block
X56 Customer terminal block
X58 Customer terminal block
PL2
S1
OUTPUT MOTOR CONNECTION
MT1
T1,T2,T3
Function
Used to select motor 2 operation
Provides termination point for motor leads in option
panel
Provide overload protection to motor when running
in bypass
Provide overload protection to motor when running
in bypass
Provides indication when motor is in bypass mode
Operator interface for bypass mode selection on
electromechanical bypass
4 position switch used to setup auto bypass on
EMB2 control option
Operator interface for contactor motor selection
Provide internal 120 Vac supply
Provide customer 120 Vac supply
Customer bypass control connections for ECB-CMS
and EMB0 control option
Provide variable frequency and voltage to AC motor
Customer control connection terminal block on
EMB1 and EMB2 control option
Customer control connection terminal block on
EMB1 and EMB2 control option
Customer control connection terminal block on
EMB2 control option
OPTIONAL
F15
GD
DS1 CB1
OPTIONAL
INPUT POWER
CONNECTION L1,L2,L3
OL1
17