Control unit - PMGA12*

The Millmate Thickness Gauging System is an intelligent measurement system and measures as accurately in the production process as in the laboratory.

The Control unit is used for integration with superior systems to enable automatic operation. For system integration there is a choice of integration interfaces:

  • Profibus DP fieldbus communication
  • Network communication via OPC
  • Discrete I/O-signals

The Control unit also handles communication with the gauge for measurement data, state control and error handling as well as implements vertical and horizontal automatic position control functions.
There are Control unit versions for one or two gauges and with wall or floor cabinets.

Data
Application
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Data

Type
Single gauge system PMGA 121
Double gauge system PMGA 122
Supply voltage 115/230 V +10/-15%
Power consumption 300 VA
Thickness output ±10 V
Digital inputs 24 V nominal, opto insulation
Digital outputs 24 V/0.5 A, opto insulation
Operation temperature +5 to +45°C
Dimension W x D x H
Elkapsling wall cabinet 800 x 300 x 800 mm
Elkapsling floor cabinet 800 x 400 x 1900 mm
MNS Select floor cabinet 840 x 656 x 2225 mm
Weight
Elkapsling wall cabinet 75 kg
Elkapsling floor cabinet 250 kg
MNS Select floor cabinet 250 kg
Protection class
Elkapsling wall/floor cabinet IP 54
MNS Select floor cabinet IP 21/IP 54

Application

The Millmate Thickness Gauge System can easily be connected to AGC systems, based on feedback, feedforward and mass flow control.

Network communication
OPC (www.opcfoundation.org) can be used as an alternative to I/O-signals for integration. The system supports OPC 2.0 Data Subscription over an optional Ethernet local network. To gain access to measurement data and system set-up, a superior computer with OPC-client functionality can communicate with an OPC-server in the Operator unit.

Profibus-DP
As an option, the MTG system can be equipped with a Profibus-DP slave interface for communicating with e.g. the rolling mill control system. The Profibus-DP interface provides fast transfer of measurement data. It can also be used for setting up nominal thickness and for remote control of system settings and gauge movement.

Single or Double gauge system
In reversing mills it is very common to use thickness gauges on both sides of the mill. The MTG system offers two different contol units, one for handling a single gauge and the other for handling two gauges. The user-friendly operator unit has a display function for double gauge configuration. The operator can see the thickness gauge deviation graphs, one for each gauge, on the same menu page.
The feature with double gauge systems can also be valuable in applications like tandem mills or slitting lines.

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