Application Examples; Example 1: Process Data With Ppo Type - Danfoss VLT Midi Drive FC 280 Programming Manual

Application Examples

7 Application Examples

7.1 Example 1: Process Data with PPO Type 6

This example shows how to work with PPO type 6, which consists of control word/status word and reference/main actual
value. The PPO also has 2 extra words, which can be programmed to monitor process signals.
PCV
PCA IND
Bit 1 2 3 4 5
number
Type 6
Table 7.1 Example: Process Data with PPO Type 6
The application requires monitoring of the motor torque
and digital input, so PCD 3 is set up to read the current
motor torque. PCD 4 is set up to monitor the state of an
external sensor via the process signal digital input. The
sensor is connected to digital input 18.
Reversing is allowed only when the reversing bit 15 in the
control word and the digital input 19 are set to high.
For safety reasons, the frequency converter stops the
motor if:
•
The PROFIBUS cable is broken.
•
The master has a system failure.
•
The PLC is in stop mode.
MG07F102
Programming Guide
1 2
PVA CTW MRV
STW MAV
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Danfoss A/S © 05/2016 All rights reserved.
PCD
3 4 5 6
PCD PCD PCD PCD
Illustration 7.1 Wiring Diagram
7 8 9 10
PCD PCD PCD PCD
Relay 1
Terminal 01-02
01 02 N
230 VAC,
3 A
45
7 7