Fire Mode - Emerson Powerdrive F300 User Manual

Safety Product Mechanical
information information installation
00.060 {05.082} Id Test Current For Inductance Measurement
RW Num
OL
RFC-A
RFC-S -100 to 0 %
Minimum test current level used for Id during auto-tuning when
measuring the motor inductance as a percentage of Rated Current
(00.046). This is then used in a similar way as Iq Test Current For
Inductance Measurement (00.057), to estimate the value of Lq used in
the control algorithms as Id changes. If Lq At The Defined Id Test
Current (00.061), or Id Test Current for Inductance Measurement
(00.060) are set to zero, then no compensation is made for changes in
Lq with Id.
00.061 {05.084} Lq At The Id Test Current
RW Num
OL
RFC-A
RFC-S 0.000 to 500.000 mH
Motor q axis inductance with no current in the q axis and the current
defined by Id Test Current for Inductance Measurement (00.060) in the d
axis of the motor. If this parameter is left at its default value of zero then
no compensation is made to the value of Lq with changes in Id.
6.3.11

Fire mode

Fire Mode - Important Warning.
When Fire Mode is active the motor overload and thermal
protection are disabled, as well as a number of drive
protection functions. Fire Mode is provided for use only in
WARNING
emergency situations where the safety risk from disabling
protection is less than the risk from the drive tripping -
typically in smoke extraction operation to permit evacuation
of a building. The use of Fire Mode itself causes a risk of fire
from overloading of the motor or drive, so it must only be
used after careful consideration of the balance of risks.
Care must be taken to prevent inadvertent activation or de-
activation of Fire Mode. Fire Mode is indicated by a flashing
display text warning "Fire mode active".
Care must be taken to ensure that parameters Pr 01.053 or
Pr 01.054 are not inadvertently re-allocated to different inputs
or variables. It should be noted that, by default, Pr 01.054 is
controlled from digital input 4 and changing Pr 08.024 can re-
allocate this digital input to another parameter. These
parameters are at access level 2 in order to minimize the risk
of inadvertent or unauthorized changes. It is recommended
that User Security be applied to further reduce the risk (see
section 5.9 Parameter access level and security on
page 109). These parameters may also be changed via serial
communications so adequate precautions should be taken if
this functionality is utilized.
Powerdrive F300 User Guide
Issue Number: 2
Electrical Getting Basic
installation started parameters the motor
US
- 50 %
US
0.000 mH
Running NV Media Card
Optimization
Operation
1.053 Fire mode reference
RW Uni
OL
±SPEED_FREQ_MAX
RFC
1.054 Fire mode activation
RO Bit
OFF (0) or On (1)
Emergency ventilation or fire mode allows for the purging of air from a
structure during a fire. It is enabled if Pr 01.053 is set to a non zero value
and activated when Pr 01.054 is set to one. When activated, the pre-
ramp reference (Pr 01.003) is set to the value of Pr 01.053 and the
normal drive controls are overridden as follows:
1. Drive enable is only controlled by the Enable input (Pr 06.015). The
control word (Pr 06.043) cannot be used to disable the drive.
2. The internal run command is forced to be active. The normal drive
sequencing bits (Pr 06.030 to Pr 06.034) and the control word have
no effect.
3. The limit switch functions (Pr 06.035 and Pr 06.036) have no effect
and will not stop the motor.
4. The hard speed reference is forced to zero. The hard speed
reference should not be used when fire mode is likely to be activated
as this will cause an abrupt change of speed.
5. The hand/off/auto function is disabled. If this system is in the hand
state when fire mode is activated it will be forced to the off state, so
that hand state is not active when fire mode is de-activated.
6. Keypad mode is disabled.
7. All latching mode states are reset.
When Pr 01.054 is subsequently set to zero the drive returns to normal
operation.
Pr 01.054 can only be changed from a digital input and the default
configuration allocates this to digital input 4.
Care should be taken when modifying parameters as setting
Pr 01.053 to zero inhibits the fire mode function and changing
Pr 08.024 (Digital Input 4 source) could result in digital input
4 source to be allocated to a parameter other than Pr 01.054.
CAUTION
If fire mode is activated when the drive is in a tripped state then the trip is
reset.
Only the trips listed in the following table can be initiated while fire mode
is active.
Onboard Advanced Technical
PLC parameters data
Hz/rpm
UL listing
Diagnostics
information
US
0.0 Hz
0.0 rpm
NC US
129