Danfoss DMS 300, Руководство по эксплуатации

Страница: 11 / 24

DMS Manual
■
Start/ stop profile setting table:
Start/stop
Profile
Start
Performance
Stop
Performance
1
(A1)
2 (A2) 3 (A3)
4
(A4)
Initial
Voltage
(%)
Start
Ramp
Time
(sec) #
Stop
Ramp
time
(sec) #
0
Equivalent to
DOL
Coast to stop Off Off Off Off 80 0.25 *
1 Fastest
Off Off Off On 80 0.5 *
2 |
Off Off On Off 60 0.75 *
3 |
Off Off On On 60 1.5 *
4 |
Off On Off Off 60 1.0 *
5 |
Off On Off On 50 2 *
6 |
Off On On Off 40 3 *
7
|
Off On On On 50 4 *
8
|
On Off Off Off 60 6 *
9 Slowest
Coast to stop
On Off Off On 60 8 *
10 Fastest Fastest
On Off On Off 60 2 1
11 | |
On Off On On 50 3 2
12 | |
On On Off Off 40 4 3
13 | |
On On Off On 40 5 3
14 | |
On On On Off 30 7 5
15 Slowest Slowest
On On On On 30 9 7
Note: * indicates Stop Ramp time is not controlled
by DMS. Motor will coast to stop. # In some applications, actual ramp time on the
motor shaft could differ from the settings.
■
Trip Class selection :
This setting is applicable only for the Extended
versions of DMS.
The DMS motor overload protection is an advanced
motor thermal model. Motor temperature is
continuously calculated by the microprocessor.
This uses a sophisticated mathematical model
to accurately reflect motor heat generation and
dissipation during all stages of operation, e.g.
Starting, Running, Stopping & Stopped.
Because it operates continuously, the motor thermal
model eliminates the need for protection systems such
as Excess Start Time, Limited Starts per hour etc.
Calibrate the DMS motor thermal model for theTrip
Class of the connected motor. The Motor Trip
Class is defined as the length of time the motor
can sustain Locked Rotor Current. The motor
Trip Class can be found from the motor curves
or data sheet. For example, if a given motor can
withstand Locked Rotor Current for 10 sec, set
Trip Class 10 (or lower) in the DMS.
If in doubt, use "Trip Class 5", which is the Factory
Default setting for this parameter. With this setting,
the DMS will trip & protect the motor if the Locked
Rotor current sustains for more than 5 secs.
Use the DIP switches A5-A6 to choose the Trip Class.
■
Trip Class selection table :
Trip Class
Time
(sec)
5
(A5)
6
(A6)
Remarks
5 Off Off Trip Class 5
10 Off On Trip Class 10
20 On Off Trip Class 20
0 On On Motor Protection off
MG.05.A2.02 - VLT is a registered Danfoss trademark
10