Danfoss VLT FC 100 Series Programming Manual page 183

Parameter Description
NOTE!
If in fire mode, it is desired to use the live zero function,
then it will also be active for analog inputs other than that
used for fire mode setpoint/feedback. Should the feedback
3 3
to any of those other analog inputs be lost, for example a
cable is burned, Live Zero function will operate. If this is
undesirable, the live zero function must be disabled for
those other inputs.
Desired live zero function, if a signal is missing when fire
mode is active, must be set in 6-02 Fire Mode Live Zero
Timeout Function.
Warning for Live Zero will have a higher priority than the
warning "Fire Mode".
NOTE!
When setting the command Start Reversing [11] on a
digital input terminal in 5-10 Terminal 18 Digital Input, the
adjustable frequency drive will understand this as a
reversing command.
24-00 Fire Mode Function
Option:
[0] Disabled
*
[1] Enabled - Run
Fwd
[2] Enabled - Run
Rev
[3] Enabled - Coast
[4] Enabled - Run
Fwd/Re
NOTE!
In the above, alarms are produced or ignored in
accordance with the selection in 24-09 Fire Mode Alarm
Handling.
3-156
®
VLT HVAC Drive Programming Guide
Function:
Fire Mode Function is not active.
In this mode, the motor will continue to
operate in a clockwise direction. Works
only in open-loop. Set 24-01 Fire Mode
Configuration to Open-loop [0].
In this mode, the motor will continue to
operate in a counter-clockwise direction.
Works only in open-loop. Set 24-01 Fire
Mode Configuration to Open-loop [0].
When this mode is enabled, the output is
disabled and the motor is allowed to
coast to stop.
MG11CD22 - VLT
24-01 Fire Mode Configuration
Option: Function:
[0] Open- When fire mode is active, the motor will run
*
loop with a fixed speed based on a reference set.
The unit will be the same as selected in
0-02 Motor Speed Unit.
[3] Closed- When fire mode is active, the built-in PID
loop controller will control the speed based on the
setpoint and a feedback signal, selected in
24-07 Fire Mode Feedback Source. The unit to be
selected in 24-02 Fire Mode Unit. For other PID
controller settings use parameter group 20-** as
for normal operation. If the motor is also
controlled by the built-in PID controller when in
normal operation, the same transmitter can be
used for both cases by selecting the same
source.
NOTE!
Before adjusting the PID controller set 24-09 Fire Mode
Alarm Handling, [2] Trip, All Alarms/Test.
NOTE!
If Enable-Run Reverse is selected in 24-00 Fire Mode
Function, Closed-loop cannot be selected in 24-01 Fire
Mode Configuration.
24-02 Fire Mode Unit
Option: Function:
Select the desired unit when fire mode is
active and running in closed-loop.
[0]
[1] %
[2] rpm
[3] Hz
[4] Nm
[5] PPM
[10] min
[11] RPM
[12] PULSE/s
[20] liter / sec.
[21] liter / min
[22] liter / hr.
[23] m³ / sec.
[24] m³/min
[25] m³ / hr.
[30] kg / sec.
[31] kg/min
[32] kg / hr.
[33] ton / min
[34] ton / hr.
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