Control unit PMGA200
The Millmate Thickness Gauging system is an intelligent measurement system designed for user-friendly commissioning, operation and service.
PMGA200 control unit overview
The control unit is used for integration with other mill systems. It provides a choice of integration interfaces.
- Profibus - DP fieldbus communication
- Network communication via VIP, OPC DA and Modbus TCP
- Discrete I/O-signals
The Control unit also handles communication with the gauge. It communicates measurement data, status control and error handling as well as implementing vertical position control functions.
The control unit is available in either wall or floor mounting cabinets.
System functions
<p>All system functions can be performed through the Operator unit.</p> <p>The main functions are divided into four groups</p> <p>– Operation, Diagnostics, Service and Settings.</p>
Operation
<p>In the Operation category, the operator can read and adjust current set-ups, thickness value and status information. Thickness deviation is presented as a real-time value as well as in a trend graph.</p>Diagnostics
<p>The diagnostics category includes functions that allow the user to see current system status, information about errors and warnings, and other vital system properties.</p>Service
<p>The service category contains use case based actions that are service related. Calibration as well as manual control functions, are in this section.</p>Settings
<p>In the settings category the system can be adapted to local conditions. Examples of system settings are HMI theme, full screen, language, IP addresses, etc.</p>| Type | PMGA200 |
| Operation temperature | +5 to +45°C (41 to 113 °F) |
| Supply voltage | 115 / 230 V +10 / -15% |
| Power consumption | 300 VA |
| Wall cabinet |
|
| Protection | IP 64 |
| Dimensions | H 658 x W 600 x D 200 mm (H 25.9 x W 23.6 x D 7.9 in) |
| Floor cabinet | |
| Protection | IP 54 or IP 21 |
| Dimensions | H 2225 x W 700 x D 600 mm (H 87.6 x W 27.6 x D 23.6 in) |
System Interface
The Millmate Thickness Gauge System can easily be connected to AGC systems, based on feedback, feedforward and mass flow control.
Network communication
As a complement to I/O signals different Ethernet communication protocols are available.
The Vendor Internet Protocol (VIP) uses predefined data telegrams to exchange information on measurement data, system status and system set-up. The sending procedure is cyclic and the receiving procedure reacts on incoming messages.
Modbus TCP is also an available option for Ethernet communication. The protocol is used in the same manner as VIP.
OPC protocol is yet another means to connect the MTG Box Gauge to higher level systems via Ethernet. The system supports OPC DA Data Access over an optional Ethernet local network. To gain access to measurement data and system set-up, a higher level computer with OPC-client functionality can communicate with the Control unit.
Profibus-DP
As an option, the MTG system can be equipped with a Profibus-DP slave interface for communicating with 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.