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VLT
®
6000 HVAC Series
NB!:
Please note the frequency converter is
only one component of the HVAC system.
Correct function of Fire Mode depends on the
correct design and selection of system components.
Ventilation systems working in life safety applications
have to be approved by the local fire Authorities.
Non-interruption of the frequency converter
due to Fire Mode operation may cause over
pressure and result in damage to HVAC system
and components, hereunder dampers and air
ducts. The frequency converter itself may be
damaged and it may cause damage or fire.
Danfoss A/S accepts no responsibility for errors,
malfunctions personal injury or any damage to
the frequency converter itself or components
herein, HVAC systems and components herein or
other property when the frequency converter has
been programmed for Fire Mode. In no event shall
Danfoss be liable to the end user or any other party
for any direct or indirect, special or consequential
damage or loss suffered by such party, which has
occurred due to the frequency converter being
programmed and operated in Fire Mode
430 Fire mode
(FIRE MODE)
Value:
✭
Off (DISABLE)
[0]
Open loop forward (OPEN LOOP FWD.)
[1]
Open loop reverse (OPEN LOOP REV.)
[2]
Open loop forward bypass (OPL. FWD BYPASS)
[3]
Function:
The Fire Mode function is made to ensure that the
VLT 6000 can run without interruption. This means
most alarms and warnings will not cause a trip
and trip lock is disabled. This is useful in case of
fire or other emergencies. Until the motor wires or
the frequency converter itself are destroyed every
attempt is made to keep running.
Description of choice:
If Disable [0] is selected then Fire Mode is disabled no
matter what the selection in parameter 300 and 301 is.
If Open loop forward [1] is selected the frequency
converter will run in forward direction open loop mode
with in parameter 431 selected speed.
If Open loop reverse [2] is selected the frequency
converter will run in reverse direction open loop mode
with in parameter 431 selected speed.
If Open loop forward bypass [3] is selected the
frequency converter will run in forward direction open
loop mode with the in parameter 431 selected speed.
If an alarm occurs the frequency converter will trip after
the in parameter 432 selected time delay has passed.
431 Fire mode reference frequency, Hz
(FIRE MODE FREQ.)
Value:
0.0 - f
max
✭
50.0 Hz
Function:
The Fire Mode frequency is the fixed output frequency
used when Fire Mode is activated via terminal 16 or 17.
Description of choice:
Set the required output frequency to be used
during Fire Mode.
432 Fire mode bypass delay, s
(FIRE M. BYP. DELAY)
Value:
0 - 600 sec.
✭
0 sec.
Function:
This time delay is used in case the frequency converter
trips caused by an alarm. After a trip, and the
delay time has passed, an output is set. Please
see description of Fire Mode and parameter 319,
321, 323 and 326 for further information.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.61.A5.02 - VLT is a registered Danfoss trademark
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