Chapter 4 - Parameters and Menu Structure
Parameters (M3)
46 | 180
Siemens Industry, Inc.
Siemens BT300 HVAC Drive
DPD01809
Building Technologies
2016-06-07
Logic
Selection Name
Note
4
CS1: Start (edge)
CS2: Reverse
Used to exclude the possibility of an unintentional start. The Start/Stop contact must be opened
before the motor can be restarted.
Figure 16: I/O A Start/Stop logic = 4.
Table 25: Legend to I/O A Start/Stop logic = 4.
1
Control signal (CS) 1 activates causing the
output frequency to rise. The motor runs
forward because CS2 is inactive.
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
Before a successful start can take place, CS1 must
be opened and closed again.
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
Before a successful start can take place, CS1 must
be opened and closed again.
5
Despite the activation of CS2, the motor does
not start because CS1 is inactive.
11
CS1 inactivates and the frequency drops to 0.
6
CS1 activates causing the output frequency to
rise again. The motor runs forward because
CS2 is inactive.
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