9.4 Example: PLC Programming
In this example PPO type 6 is placed in the following Input/Output address:
Input
address
256-257 258-259 260-261 262-263 Output
address
256-257 258-259 260-261 262-263
Set-up Status
word
MAV Motor
torque
Digital
input
Set-up Control
word
Reference Not used Not used
Illustration 9.2 PPO Type 6 Placed in the Input/Output Address
This network sends a start command (047C Hex) and a
reference (2000 Hex) of 50% to the frequency converter.
Illustration 9.3 Network Sends Start Command and Reference
This network reads the motor torque from the frequency
converter. A new reference is sent to the frequency
converter because the Motor Torque (86.0%) is higher than
the compared value.
Illustration 9.4 Network Reads the Motor Torque
This network reads the status on the digital inputs from
the frequency converter. If digital input 18 is On, it stops
the frequency converter.
Illustration 9.5 Network Reads the Status on the Digital Inputs
This network reverses the motor when digital input 19 is
ON, because parameter 8-54 Reversing Select is
programmed to Logic AND.
Illustration 9.6 Network Reverses the Motor
This network activates relay 02.
Illustration 9.7 Network Activates Relay 02
Application Examples Operating Instructions
62 Danfoss A/S © Rev. 2014-02-27 All rights reserved. MG90U302
99
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