Siemens bt300 Operator's Manual page 44

Chapter 4 - Parameters and Menu Structure
Parameters (M3)
Logic Selection Name
2
CS1: Forward (edge)
CS2: Backward (edge)
1 Control signal (CS) 1 activates causing the
output frequency to rise. The motor runs
forward.
2 CS2 activates, 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.
44 | 180
Siemens Industry, Inc.
Building Technologies
Used to exclude the possibility of an unintentional start. The Start/Stop contact must be opened
before the motor can be restarted.
Figure 14: I/O A Start/Stop logic = 2.
Table 23: Legend to I/O A Start/Stop logic = 2.
Siemens BT300 HVAC Drive
Note
7 CS1 activates and the motor accelerates
(FWD) towards the set frequency
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,
unlike if value 0 is selected for this
parameter, has no effect because rising edge
is required to start even if CS1 is 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 CS1 is opened and closed again which
causes the motor to start.
12 CS1 inactivates and the frequency fed to the
motor drops to 0.
DPD01809
2016-06-07