Danfoss VLT 6000 HVAC

VLT
®
6000 HVAC
111MG.60.B1.02 - VLT is a registered Danfoss trade mark
★ = factory setting. ( ) = display text [ ] = value for use in communication via serial communication port
Programming
412 Trip delay overcurrent, I
LIM
(OVERLOAD DELAY)
Value:
0 - 60 sec. (61=OFF) ★ 60 sec.
Function:
When the frequency converter registers that the
output current has reached the current limit I
LIM
(parameter 215 Current limit) and stays there for the
duration selected, a cut-out will be performed.
Description of choice:
Select for how long the frequency converter is to be
able to keep up with the output current at the current
limit I
LIM
before it cuts out.
In OFF mode, parameter 412 Trip delay overcurrent,
I
LIM
is inactive, i.e. cut-outs are not performed.
408 Interference reduction method
(NOISE REDUCTION)
Value:
★ ASFM (ASFM) [0]
Fixed switching frequency
(FIXED SWITCHING FREQ.) [1]
LC filter fitted (LC-FILTER CONNECTED) [2]
Function:
Used to select different methods for reducing the
amount of acoustic interference from the motor.
Description of choice:
ASFM [0] guarantees that the maximum switching
frequency is used at all times without derating of the
VLT frequency converter. This is done by monitoring
the load.
Fixed switching frequency [1] makes it possible to set
a fixed high/low switching frequency. This can
generate the best result, as the switching frequency
can be set to lie outside the motor interference or in a
less irritating area. The switching frequency is
adjusted in parameter 407 Switching frequency. LC-
filter fitted [2] is to be used if an LC-filter is fitted
between the VLT frequency converter and the motor,
as the VLT frequency converter will otherwise not be
able to protect the LC-filter.
409 Function in case of no load
(FUNCT. LOW CURR.)
Value:
Trip (TRIP) [0]
★ Warning (WARNING) [1]
Function:
This parameter can be used e.g. for monitoring the V-
belt of a fan to make sure it has not snapped. This
function is activated when the output current goes
below parameter 221 Warning: Low current.
Description of choice:
In the case of a Trip [1], the VLT frequency converter
will stop the motor.
If Warning [2] is selected, the VLT frequency converter
will give a warning if the output current drops below
the threshold value in parameter 221 Warning: Low
current, I
LOW
.