Chapter 4 Parameters
VFD-EL-W
4-74
The diagram below shows the sequential relationship between the preheating function and enabled DC brake.
08.23
Fire Mode
Settings 0: No function
1: Forward running
2: Running in reverse
Default: 0
Use this parameter with Pr.04.06–Pr.04.08 multi-function input terminals #27 or #28 (Fire mode enabled
with/without operation command) and Pr.03.00 multi-function output terminal #25 (Fire Mode Indication).
0: The fire mode is invalid.
1: The motor runs in a clockwise direction (U, V, W) during fire accident.
2: The motor runs in a counterclockwise direction (U, V, W) during fire accident.
08.24
Operating Frequency during Fire Mode
Settings 0.00–400.00 Hz Default: 60.00
Sets the AC motor drive’s operating frequency when the fire mode is enabled.
08.25
Number of Fire Mode Actions
Settings Read only Default: Read only
As long as the fire mode is enabled for more than four minutes, regardless of whether the AC motor drive
runs or not, the fire mode action and its number of occurrences are recorded. Note that this parameter is
read-only. Any parameter value that is not zero voids the warranty.
※
Fire mode end process flow:
If you set the Pr.04.06–Pr.04.08 multi-function input terminal=27/28 to ON or the communication address to
2002H with bit5=1 (fire mode enabled), and the fire mode is enabled for more than four minutes, and then you
set the Pr.04.06–Pr.04.08 multi-function input terminal=27/28 to OFF or the communication address to 2002H
with bit5=0 (no function), the counter starts to count from four minutes after the fire mode is enabled. After the
fire mode is enabled for 2.5 hours, the AC motor drive resumes normal operation, and stops or operates to
normal operating frequency according to the original input status.
If you set the Pr.04.06–Pr.04.08 multi-function input terminal=27/28 to ON or the communication address to
2002H with bit5=1 (fire mode enabled), and the fire mode is enabled for less than four minutes, the AC motor
drive resumes normal operation once the fire mode is disabled, and stops or operates to normal operating
frequency according to the original input status.
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