Fire Mode (M3.16) - Siemens bt300 Operator's Manual

Auto-change (P3.14.4)
Selection Selection Name
0 Disabled
1 Enabled
Example:
In the auto-change sequence after the auto-change has taken place, the motor with the highest priority is placed
last and the others are moved up by one place:
Starting order/priority of motors:
Autochange
→ →
Starting order/priority of motors:
Autochange
→ →
Starting order/priority of motors:

Fire Mode (M3.16)

The drive ignores all commands from the keypad, fieldbuses, and the PC tool and runs at the speed defined in Fire
Mode Frequency Source (P3.16.5) when the mode is activated. If activated, the alarm sign displays on the keypad
and the warranty is void. To enable the function, a password must be set in Fire Mode Password (P3.16.1).
There is a different password for test mode, to be used for testing the Fire Mode without the warranty becoming
void.
The Fire Mode settings are presented in the following table:
Siemens Industry, Inc.
Building Technologies
Table 70: Auto-Change Selections.
The priority/starting order of the motors is always 1-2-3-4-5 in normal
operation. It may have changed during its run if interlocks have been removed
and added again, but the priority/order is always restored after a stop.
The priority is changed at certain intervals to get an equal wear on all motors.
The intervals of the auto-change can be changedAutochInterval (P3.14.5). You
can also set a limit for how many motors are allowed to run AutochMotorLimit
(P3.14.7) as well as for the maximum frequency of the regulating drive when
the auto-change is done Autoch:FreqLim (P3.14.6). If the auto-change interval
Autoch Interval (P3.14.5) has expired, but the frequency and motor limits are
not fulfilled, the auto-change will be postponed until all conditions are met (this
is to avoid for example sudden pressure drops while the system is performing
an auto-change when there is a high capacity demand at a pump station.
1 2 3 4 5
→ → → →
2 3 4 5 1
→ → → →
3 4 5 1 2
→ → -→ →
NOTE:
The warranty is void if the Fire Mode function is activated. Test Mode can be used to
test the Fire Mode function without voiding the warranty.
Siemens BT300 HVAC Drive
Chapter 4 - Parameters and Menu Structure
Description
Parameters (M3)
105 | 180
DPD01809
2016-06-07