AD437153353153en-010301.pdf - 第9页

Step 3. Match your needs F ind the right match between your application and the soft star ter featur es you need. • Eltwin SMC Soft Star ter • VL T® Compact Starter MCD 201 or 202 • VL T® Soft Star ter MCD 600 Eltwin SMC…

100%1 / 28
Speed control Initial cost
AC drive
(VSD)
Soft starter
(SST)
Direct-on-line
(DOL)
Continuous
speed control
Start/stop
CAPEX OPEX
VSD
SST
DOL
SST
DOL
VSD
Step 2. Match your application, motor, and controls
If you selected an AC drive (VSD), read more about Danfoss
drives on drives.danfoss.com.
If you selected a soft starter, then read on.
Direct-on-line (DOL) drawbacks
• Wear on motor bearings
• Wear and tear on gearbox
• Water hammer
Select the size of the soft starter to
match both the motor and the
application.
1. Use the soft starter guide on p6 as a
starting point
2. Match the soft starter current rating
with motor full load current rating,
see p8
Soft starter motor and control guide
- select a soft starter to match
Select a soft starter that has a current
rating at least equal to the motor’s full
load current rating (see motor
nameplate) at the application start
duty (Light, Standard, heavy)
Soft starter current rating
The current rating of the soft starter
determines the maximum motor size it
is compatible with.
The current rating of the soft starter
depends on:
• The number of starts per hour
• The duration and current level of each
start
• The duration of time the soft starter is
turned off (not passing current)
between starts
Soft starter start performance
For Eltwin SMC, find information on
start performance here
For MCD 200, find information on start
performance in the Design Guide.
Find it here.
For MCD 600
• Refer to the Design Guide for
information on start performance in
different load situations
• Alternatively use the designer tool
“Winstart for MCD 600” to tailor the
selection to optimize your application.
Download Winstart for MCD 600 on
www.danfoss.com.
Interaction with controls
Designing your application also
includes interaction with controls.
The basic soft starters, Eltwin SMC and
MCD 201, depend on other
components for warning and alarms.
MCD 202 is able to signal overload,
either via digital I/O or fieldbus options.
Step 1. Determine what kind of speed control you need
Consider first, whether start/stop control or continuous speed control is required.
Then consider the scale of both initial investment and running costs.
Soft starter application guide:
Find the right product for your application
AD437153353153en-010301 > VLT® Soft Starter 8
Step 3. Match your needs
Find the right match between your application and the soft starter features you need.
• Eltwin SMC Soft Starter
• VLT® Compact Starter MCD 201 or 202
• VLT® Soft Starter MCD 600
Eltwin SMC MCD 201 MCD 202 MCD 600
Power size
0.1-15 kW (3-25 A) 7-110 kW (17-200 A) 7-110 kW (17-200 A) 7.5 - 1400 kW (20-1250 A)
Voltage range
3 x 400 - 480 VAC, 45-66 Hz 3 x 200 - 575 VAC, 45-66 Hz 3 x 200 - 575 VAC, 45-66 Hz 3 x 200 - 690 VAC, 45-66 Hz
Start/ Stop mode
Timed voltage ramp Timed voltage ramp
Timed voltage ramp
Current-controlled ramp
Current-controlled ramp
Adaptive-controlled ramp
Protection
None (external components) None (external components) 7 features 19 features
Inputs
1 DI 1 DI 2 DI 4 DI
Outputs
0 0 2 DO 3 DO/ 1 AO
Control
2-wire control
3 rotary switches
2-3 wire control
3 rotary switches
Remote operator
2-3 wire control
8 rotary switches
Remote operator
2-wire control
Built-in graphical display
Remote graphical display
Integrated functions
- - -
Reverse control
Pump Clean / deragging
Power Through
and many more
Options
None PROFIBUS, PROFINET, EtherNet/IP, Modbus TCP
1]
1]
For full details see Options, page 26.
Serial communication
Eltwin SMC MCD 201 MCD 202 MCD 600
Start/stop, reset
· · · ·
LED for start, run, trip
· · · ·
Trip codes
· · · ·
Current display
· ·
Motor temperature display
· ·
4 – 20 mA output
·
Programming keypad, graphical display
·
MCD 600 includes a full warning and
alarm handling system to interface
controls either via digital I/O or fieldbus
options: serial- or Ethernet-based such
as PROFINET or EtherNet/IP. Check the
specifications for more details.
VLT® Compact Starter MCD 201 and
202, and VLT® Soft Starter MCD 600
come with optional plug-in modules
for serial communication.
• DeviceNet
• EtherNet/IP
• PROFIBUS
• Modbus RTU
• USB
AD437153353153en-010301 > VLT® Soft Starter
9
S1 S2 S3
Feature Benefit Description
Intuitive application setup Save commissioning time.
Easy and uncomplicated commissioning. Just enter motor
current, select your application, then you are ready to run
Extended simulation mode with full
simulation of start behaivor
Test your soft starter without connecting mains
supply or motor.
Test your soft starter functions and integration with controllers,
without connecting mains supply or motor
Built-in timers and schedulers
Easy to set up a timer. No need to install external
controller or components.
Easy to set up weekly planned watering programs for
agriculture, or just a a single timer to start the pump on
demand. No need for external controller or components
Pump Clean (Deragging) function More uptime and longer pump life.
For a blocked pump, trigger the Pump Clean function. MCD
600 will automatically start a program to run the motor
alternately in reverse/forward. No extra external components
required. Just select the input and Pump Clean starts.
Reverse control function
Run the MCD 600 in both forward and reverse
directions. MCD 600 will maintain full control over
starting current and protection. To use this function,
install a reversing contactor in the application.
Run the MCD 600 in both forward and reverse directions.
MCD 600 will maintain full control over starting current and
protection. To use this function, install a reversing contactor in
the application.
Power Through function
More uptime - bypasses damaged components to
keep your motor running.
If an SCR is damaged, and you don’t have time for repair, start
the Power Through function. This will bypass the damaged
SCR and keep your motor running
Emergency mode
Asset protection - keeps the pump or fan running
for as long as possible in an emergency.
If required, MCD 600 can Switch to Emergency mode. In this
mode, MCD 600 ignores all messages and keeps the pump or
fan running for as long as possible.
The VLT® Soft Starter MCD 600 combines the latest in advanced controls and
protections with an increased level of intelligence for superior performance in
fixed-speed applications.
The MCD 600 is more flexible than ever to install, thanks to a wide variety of
Ethernet and serial-based communication option cards, application-dedicated
smart cards and support for eight languages.
The integrated bypass ensures both extremely high efficiency and harmonic-free
operation at full speed, reducing energy consumed and required cooling capacity.
Ease of use is also greatly increased with new capabilites, such as the pump-clean
function, PowerThrough operation, and calendar or run timebased scheduling.
Furthermore, enhanced protection ensures more uptime.
VLT® Soft Starter MCD 600
at a glance:
Mains voltage range
• 3 x 200-525 VAC (T5)
• 3 x 380-690 VAC (T7)
Current range and enclosure
• IP20: 20-129 A (nominal)
• IP00: 144-1250 A (nominal)
VLT® Soft Starter MCD 600 is a total motor starting solution.
Current transformers measure motor current and provide
feedback for controlled motor ramp profiles.
VLT® Soft Starter MCD 600
AD437153353153en-010301 > VLT® Soft Starter 10