Danfoss VLT PROFIBUS DP MCA 101 User Manual

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 PCD
1 2 3 4 5 6 7 8 9 10
PCA IND PVA CTW MRV PCD PCD PCD PCD PCD PCD PCD PCD
STW MAV
Bit
number
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
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.
An external device is also controlled via control word bit
11 and the built-in relay of the frequency converter.
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.
Probus master
Probus
Relay 04-05
230 V AC
Ext. device
Sensor
Reversing
6362
18
20
19
0-24 V DC
130BA087.10
Illustration 7.1 Wiring Diagram
Application Examples
VLT
®
PROFIBUS DP MCA 101
48 Danfoss A/S © 01/2016 All rights reserved. MG37G202
77

Danfoss VLT PROFIBUS DP MCA 101 Specifications

General

Brand	Danfoss
Model	VLT PROFIBUS DP MCA 101
Category	Media Converter
Language	English