Operating Instructions

Chapter 4 - Parameters and Menu Structure
Parameters (M3)
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Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Smart Infrastructure
2019-05-29
Logic
Selection Name
Note
0
CS1: Forward
CS2: Backward
The functions take place when the contacts are closed.
Figure 12: I/O A Start/Stop logic = 0.
Table 21: Legend to I/O A Start/Stop logic = 0.
1
Control signal (CS) 1 activates causing the
output frequency to rise. The motor runs
forward.
8
Run enable signal is set to FALSE, which
drops the frequency to 0. The run enable
signal is configured with RunEnable
(P3.5.1.11).
2
CS2 activate, but has no effect on the
output frequency because the first selected
direction has the highest priority.
9
Run enable signal is set to TRUE, which
causes the frequency to rise towards the
set frequency because CS1 is still active.
3
CS1 is inactivated which causes the
direction to start changing (FWD to REV)
because CS2 is still active.
10
Keypad stop button is pressed and the
frequency fed to the motor drops to 0. (This
signal only works if KeypadStopButton
[P3.2.3] = Yes)
4
CS2 inactivates and the frequency fed to
the motor drops to 0.
11
The drive starts through pressing the Start
button on the keypad.
5
CS2 activates again causing the motor to
accelerate (REV) towards the set frequency.
12
The keypad stop button is pressed again to
stop the drive.
6
CS2 inactivates and the frequency fed to
the motor drops to 0.
13
The attempt to start the drive through
pressing the Start button is not successful
because CS1 is inactive.
7
CS1 activates and the motor accelerates
(FWD) towards the set frequency.