VLT
®
6000 HVAC
139
MG.60.B1.02 - VLT is a registered Danfoss trademark
✭
=
factory setting. ( ) = parameter window text. [ ] = value for use in communication via serial communication port
Programming
NB!:
Parameters 555
Bus time interval
and 556
Bus
time interval function
are only active when
FC
protocol
[0] has been selected in parameter 500
Protocol.
555 Bus time interval (BUS TIME INTERVAL)
Value:
1 - 65534 sec.
★
60 sec.
Function:
In this parameter, the time is set which is expected to
pass as a maximum between the receipt of two
telegrams in a row. If this time is exceeded, the serial
communication is assumed to have stopped and the
required reaction is set in parameter 556
Bus time
interval function.
Description of choice:
Set the required time.
556 Bus time interval function
(BUS TIME INTERVAL FUNCTION)
Value:
★
Off (OFF)
[0]
Freeze output (FREEZE OUTPUT)
[1]
Stop (STOP)
[2]
Jogging (JOG FREQUENCY)
[3]
Max. output frequency (MAX FREQUENCY)
[4]
Stop and trip (STOP AND TRIP)
[5]
Function:
In this parameter, the required reaction from the VLT
frequency converter is selected when the time set in
parameter 555
Bus time interval
has been exceeded.
Description of choice:
The output frequency of the VLT frequency converter
can be frozen at the present value at any given time,
frozen at parameter 211
Preset reference 1
, frozen at
parameter 202
Max. output frequency
, or stop and
activate a cut-out.