Siemens SINAMICS G120 Instructions d'exploitation télécharger pdf (Page 166)

Functions

7.4 Setpoint sources

Inverter with CU240B-2 and CU240E-2 Control Units

164 Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB

Example: Selecting two fixed speed setpoints using digital input 2 and digital input 3

The motor is to run at two different speeds:

● The motor is switched on with digital input 0

● When digital input 2 is selected, the motor is to run at a speed of 300 rpm.

● When digital input 3 is selected, the motor is to accelerate to a speed of 2000 rpm.

● When digital input 1 is selected, the motor should go into reverse

Table 7- 21 Parameter settings for the example

Parameter Description

p0015 = 12 Macro drive unit: Configure inverter with terminal strip as the command and

setpoint source.

• The motor is switched on and off via digital input 0.

• The setpoint source is analog input 0.

p1001 = 300.000 Defines the fixed setpoint 1 in [rpm]

p1002 = 2000.000 Defines the fixed setpoint 2 in [rpm]

p1016 = 1 Direct selection of fixed setpoints

p1020 = 722.2 Interconnection of fixed setpoint 2 with DI 2.

r0722.2 = parameter that displays the status of digital input 2.

p1021 = 722.3 Interconnection of fixed setpoint 3 with status of DI 3.

r0722.3 = parameter that displays the status of digital input 3.

p1070 = 1024 Interconnect main setpoint with fixed speed setpoint

7.4.4 Running the motor in jog mode (JOG function)

Using the "jog" function (JOG function), you can switch the motor on and off using a control

command or the operator panel. The speed to which the motor accelerates for "Jog" can be

set.

The motor must be switched-off before you issue the "jog" control command. "Jog" has no

effect when the motor is switched on.

The "Jog" function is typically used to manually switch-on a motor after switching over from

automatic to manual operation.

Setting jogging

The "Jog" function has two different speed setpoints, e.g. for motor counter-clockwise

rotation and clockwise rotation.

With an operator panel, you can always select the "Jog" function. If you wish to use

additional digital inputs as control commands, you must interconnect the particular signal

source with a digital input.

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Siemens SINAMICS G120 Instructions d'exploitation Page 166