Programming Example; Example For Electric Motor Initiation Control And Rotation - ABB AC500-eCo Starter-Kit Getting Started

3. Programming Example

This chapter will show you how to use the Starter-Kit with 2 different examples. You will find
another example with PM554 and expansion S500-eCo module in the appendix.

3.1 Example for electric Motor Initiation Control and Rotation

We take the widespread use's three-phase mouse cage type asynchronous motor as the
examples.
Introduced that the electric motor starts (network 1) after 15 seconds later, it's carries on the
star – triangle (Y-∆) voltage dropping transformation (network 2). And only after the initiation
(network 3) can this motor to the forward (network 4) or reversing (network 5) rotation control.
This program used LD (Ladder Diagram) as program language.
Following symbol table we use for all onboard I/Os configuration.
Symbol name Comment in PLC configuration
ObDI00 Motor START with SB1
ObDI01 Triangle initialization START
with SB2
ObDI02 Transistor ON with KH1
ObDO00 Motor ON KM1
ObDO01 Triangle KM2
ObDO02 Star KM3
ObDI03 Transistor ON with KH2
ObDI04 Motor forward rotation with SB3
ObDI05 Motor reversing with SB4
ObDO03 Motor forward KM4
ObDO04 Motor reversing KM5
Need circuit diagram
____________________________________________________________________________________________________
Getting Started with AC500-eCo Starter-Kit
Meaning
Switch SB1 to start the Motor
Switch SB2 to start the Y->Δ initialization
Transistor KH1 must always ON
Motor is on
Motor is on with triangle type
Motor is on with star type
Transistor KH2 must always ON
Switch SB3 to start the motor forward
rotation
Switch SB3 to start the motor reversing
rotation
Motor is forward
Motor is reversing
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