28
MG.60.N1.22
- VLT is a registered Danfoss trademark
VLT
®
5000 / VLT
®
6000
HVAC / VLT
®
8000 AQUA
Precedence of the stop commands
is:
1. Coast stop
2. Quick stop
3. DC brake stop
4. Ramp stop
Coast stop
The drive output stops immediately
and the motor coasts to a stop.
• Drive display show UN.READY
(unit ready) when coast stop
is active.
• Drive cannot run in any mode.
• Parameter 503 (502),
Coasting stop
, determines
interaction with input 27.
Quick stop
The drive output frequency ramps
down to 0 Hz according to time set
in parameter 207 (212),
Ramp Down
Time
.
• Drive display shows STOP.
• Drive cannot run in AUTO
mode but can run in HAND
mode.
DC brake stop
The drive brakes the motor to a stop
using DC injection braking.
• Parameters 114 (125) and 115
(126) determine amount and
time of DC current applied for
braking.
• Drive display shows DC STOP.
• Drive cannot run in AUTO
mode but can run in HAND
mode.
• Parameter 504,
DC Brake
,
determines interaction with
input 27.
Drive Speed Setpoint
With this input variable it is possible to
give the Drive a Start/stop signal and a
reference.
S t a t e
S t a t e
S t a t e
S t a t e
S t a t e
R e f . v a l u e
R e f . v a l u e
R e f . v a l u e
R e f . v a l u e
R e f . v a l u e C o m m a n d
C o m m a n d
C o m m a n d
C o m m a n d
C o m m a n d
0
-
Stop
1
0
Run, Ref. = 0%
1
0-100%
Run, Ref. = 0-100%
0xFF
-
Auto (invalid)
Default is Auto.
Ramp stop
The drive output frequency ramps down to
0 Hz according to time set in parameter
207,
Ramp Down Time
.
• Factory setting is 60 sec for fan
applications and 10 sec for most
pump applications.
• Drive display shows STAND BY.
• Drive can run in HAND mode or
AUTO through a digital input
command.
• Parameter 505,
Start
, determines
interaction with input 18.