Danfoss VLT DriveMotor FCP 106 Programming Manual page 115

Parameters
4.17 Main Menu - Application Functions 2 -
Group 24
4.17.1 24-0* Fire Mode
WARNING
EQUIPMENT DAMAGE AND PERSONAL INJURY
Non-interruption of the frequency converter due to fire
mode operation could cause overpressure and damage
the system and its components, hereunder dampers, and
air ducts. The frequency converter itself could be
damaged and it may cause damage or fire.
•
Ensure that the system is properly designed and
components used are carefully selected.
•
Ensure that the ventilation systems working in
life safety applications are approved by the
local fire authorities.
Background
Fire mode is for use in critical situations, where it is
imperative for the motor to keep running, regardless of the
frequency converter's normal protective functions. These
could be ventilation fans in tunnels or stairwells for
instance, where continued operation of the fan facilitates
safe evacuation of personnel if there is a fire. Some
selections of fire mode function cause alarms and trip
conditions to be ignored, enabling the motor to run
without interruption.
Activation
Fire mode is activated only via digital input terminals. See
parameter group 5-1* Digital Inputs.
Messages in display
When fire mode is activated, the display shows the status
message Fire Mode.
Once the fire mode is deactivated, the status message
disappears.
If an alarm with warranty implications (see
parameter 24-09 FM Alarm Handling) occurs while the
frequency converter is active in fire mode, the display
shows the status message Fire Mode Limits Exceeded. Once
this status message appears, it remains permanently and
cannot be removed.
Digital and relay outputs can be configured for the status
messages Fire Mode Active. See parameter group 5-3*
Digital Outputs and parameter group 5-4* Relays.
Access the status messages Fire Mode and Fire Mode Limits
Exceeded via the extended status word.
MG03N202
Programming Guide
Message
Fire Mode
Fire Mode
Limits
Exceeded
Table 4.15 Fire Mode Display Messages
Log
The fire mode log shows an overview of events related to
fire mode in the fire mode log, see also parameter group
18-1* Fire Mode Log.
The log includes up to 10 of the latest events. Fire Mode
Limits Exceeded has a higher priority than Fire Mode Active.
The log cannot be reset.
The following events are logged:
•
•
All other alarms occurring while fire mode is active are
logged as usual.
NOTICE
During fire mode operation, all stop commands to the
frequency converter are ignored, including coast, coast
inverse, and external interlock.
NOTICE
If setting the command [11] Start Reversing on a digital
input terminal in parameter 5-10 Terminal 18 Digital
Input, the frequency converter understands this
command as a reversing command.
24-00 FM Function
Option:
[0] Disabled
*
[1] Enabled-
Run
Forward
[2] Enabled-
Run
Reverse
[3] Enabled-
Coast
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Warning
Type LCP Message
Word 2
Status + +
Status + +
Fire mode activated.
Fire mode limits exceeded (warranty affecting
alarms).
Function:
NOTICE
In fire mode, alarms are produced or
ignored in accordance with the selection
in parameter 24-09 FM Alarm Handling.
Fire mode function is not active.
In this mode, the motor continues to operate in
a clockwise direction.
In this mode, the motor continues to operate in
a counterclockwise direction.
While this mode is selected, the output is
disabled, and the motor is allowed to coast to
stop. When parameter 24-01 Fire Mode Configu-
ration is set to [3] Closed Loop, this mode
cannot be selected.
Extended
status
Word 2
+ (bit 25)
+ (bit 27)
4 4
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