Two-Wire Control, Method 3 - Siemens SINAMICS G120 Operating Instructions Manual

5.2.4

Two-wire control, method 3

Function description
This control method uses two control commands as permanent signals.
Like method 2, CW and CCW rotation can be started/stopped by one control command
each. In contrast to method 2, however, the control commands can be switched at any time
regardless of the setpoint, output frequency, and direction of rotation. The motor does not
have to coast to 0 Hz either before a control command is executed.
Figure 5-4
Table 5- 7
Motor ON /
Table 5- 8
Parameter
P0700 = 2
P0727 = 1
P0701 = 1
P0702 = 2
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
Two-wire control using digital inputs, method 3
Function table
Motor ON / Function
CW CCW
0 0 OFF1: The motor decelerates to a standstill
0 1 The motor accelerates to the inverted setpoint
1 0 The motor accelerates to the setpoint
1 1 OFF1: The motor decelerates to a standstill
Parameterizing the function
Description
Controls the motor using the digital inputs of the inverter
Two-wire control, method 3
CW rotation is activated with digital input 0
Further options:
CW rotation can be activated with any other digital input, e.g. with digital input 3 via
P0704 = 1
CCW rotation is activated with digital input 1
Further options:
CCW rotation can be activated with any other digital input, e.g. with digital input 3 via
P0704 = 2
Functions
5.2 Inverter control
89