Siemens bt300 Operator's Manual page 42

Chapter 4 - Parameters and Menu Structure
Parameters (M3)
Logic Selection Name
0 CS1: Forward
CS2: Backward
1 Control signal (CS) 1 activates causing the
output frequency to rise. The motor runs
forward.
2 CS2 activate, but has no effect on the output
frequency because the first selected direction
has the highest priority.
3 CS1 is inactivated which causes the direction
to start changing (FWD to REV) because CS2
is still active.
4 CS2 inactivates and the frequency fed to the
motor drops to 0.
5 CS2 activates again causing the motor to
accelerate (REV) towards the set frequency.
6 CS2 inactivates and the frequency fed to the
motor drops to 0.
7 CS1 activates and the motor accelerates
(FWD) towards the set frequency.
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Building Technologies
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.
Siemens BT300 HVAC Drive
Note
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).
9 Run enable signal is set to TRUE, which
causes the frequency to rise towards the set
frequency because CS1 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)
11 The drive starts through pressing the Start
button on the keypad.
12 The keypad stop button is pressed again to
stop the drive.
13 The attempt to start the drive through
pressing the Start button is not successful
because CS1 is inactive.
DPD01809
2016-06-07