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
3
CS1: Start
CS2: Reverse
Figure 15: I/O A Start/Stop logic = 3.
Table 24: Legend to I/O A Start/Stop logic = 3.
1
Control signal (CS) 1 activates causing the
output frequency to rise. The motor runs
forward.
7
Run enable signal is set to FALSE, which
drops the frequency to 0. The run enable
signal is configured with Run Enable
(P3.5.1.11).
2
CS2 activates which causes the direction to
start changing (FWD to REV).
8
Run enable signal is set to TRUE, which
causes the frequency to rise towards the
set frequency because CS1 is still active.
3
CS2 is inactivated which causes the
direction to start changing (REV to FWD)
because CS1 is still active.
9
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
Also CS1 inactivates and the frequency
drops to 0.
10
The drive starts through pressing the Start
button on the keypad.
5
Despite the activation of CS2, the motor
does not start because CS1 is inactive.
11
The drive is stopped again with the stop
button on the keypad.
6
CS1 activates causing the output frequency
to rise again. The motor runs forward
because CS2 is inactive.
12
The attempt to start the drive through
pressing the Start button is not successful
because CS1 is inactive.