Danfoss VLT 6000 HVAC Series User Manual

The process regulator will thus only regulate a feed-
back signal that varies by a frequency lower than 1.6
Hz.
If the feedback signal varies by a higher frequency
than 1.6 Hz, the Process regulator will not react.
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 ap-
proved 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, here-
under dampers and air ducts. The fre-
quency converter itself may be dam-
aged and it may cause damage or fire.
Danfoss A/S accepts no responsibility
for errors, malfunctions personal in-
jury or any damage to the frequency
converter itself or components herein,
HVAC systems and components here-
in or other property when the frequen-
cy 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 pro-
grammed 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 BY-
PASS) [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 emer-
gencies. Until the motor wires or the frequency con-
verter 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 con-
verter will run in forward direction open loop mode with
in parameter 431 selected speed.
If Open loop reverse [2] is selected the frequency con-
verter will run in reverse direction open loop mode with
in parameter 431 selected speed.
If Open loop forward bypass [3] is selected the fre-
quency 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
VLT
®
6000 HVAC Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
MG.61.B5.02 - VLT
®
is a registered Danfoss trademark 153
Programming

Danfoss VLT 6000 HVAC Series Specifications

General

Brand	Danfoss
Model	VLT 6000 HVAC Series
Category	DC Drives
Language	English