Danfoss VLT 6000 HVAC, Operating Instructions Manual

Page: 41 / 44

40 MG.60.N2.02 - VLT is a registered Danfoss trademark
VLT ® 5000 / VLT ® 6000 HVAC / VLT ® 8000 AQUA
804
Time out function Selection:
★
Off
(NO FUNCTION) [0]
Freeze output frequency
(FREEZE OUTPUT FREQ.) [1]
Stop with auto restart
(STOP) [2]
Output frequency = JOG freq.
(JOGGING) [3]
Output frequency = Max. freq.
(MAX SPEED) [4]
Stop with trip
(STOP AND TRIP) [5]
Control without DeviceNet
(NO COM OPT CONTROL) [6]
Select set-up 4
(SELECT SET UP 4) [7]
Function:
The time out timer is triggered at the first
reception of a valid control word, i.e.,
bit 10 = ok.
The time out function can be activated in two
different ways:
1. The drive does not receive a
LonWorks command addressed to it
within the specified time.
2. Parameter 805 is set to “bit 10 = 0
time out” and a control word with “bit
10 = 0” is sent to the drive.
The VLT remains in the time out state until
one of the following four conditions is true:
1. A valid control word (Bit 10 = ok) is
received and the drive is reset
through the bus, the digital input
terminals or the local control panel.
(Reset is only necessary when the
time out function
Stop w/trip is
selected.) Control via LonWorks is
resumed using the received control
word.
2. Local control via the local control
panel is enabled.
3. Parameter 928,
Access to process
control, is set to Disabled.
Normal control via the digital input
terminals and the RS-485 interface is
now enabled.
★
Factory setting
4. Parameter 804,
Bus time out function,
is set to
Off.
Control via LonWorks is resumed and
the most recent control word is used.
Description of Selections:
•
Freeze output frequency. Maintain
present output frequency until
communication is resumed.
•
Stop with auto restart. Stop and
automatically restart when
communication is resumed.
•
Output frequency = JOG freq. Drive
will produce JOG frequency set in
parameter 209 (213),
Jog frequency,
until communication is resumed.
•
Output frequency = Max. freq. Drive
will produce maximum output
frequency (set in parameter 202,
Output frequency) until
communication is resumed.
•
Stop with trip. Drive stops and
requires a reset command before it
will restart.
•
Control without LonWorks. Control via
LonWorks is disabled. Control is
possible via digital input terminals
and/or standard RS-485 interface
until LonWorks communication is
resumed.
•
Select setup 4. Setup 4 is selected in
parameter 002 (004),
Active setup,
and settings of setup 4 are used.
Parameter 002 (004) is not reset to
the original value when
communication is resumed.
VLT 5000 parameters are shown in parenthesis, where applicable.