ProVU is designed to make operation as simple as possible, with a large area LCD screen for displaying graphics and messages in plain text, with the option of automatically changing the screen colour for alarm and event conditions. The plain text feature reduces the potential for confusion that is traditionally associated with the mnemonic codes that are often used with competing products with LED displays.
In addition, the new controller incorporates a simple set-up wizard, which automatically starts as soon as the instrument is powered on. The wizard guides users through the principle set-up and configuration procedures, including the type of inputs, outputs, alarms, set points and so on; for many mainstream applications this may be all that is required, enabling fast and simple commissioning. These settings can also be saved to a memory stick via a front panel USB port and then used for later reconfiguration or to download the same program to other ProVU units; alternatively, PC based BlueControl software can be used for on- and off-line configuration.
For more complex process operations, or where greater monitoring and control of process parameters is needed, then ProVU also offers the option for users to activate additional functions, such as data logging, trending and profiling. As each feature is activated extra pages are automatically added to the user menu, giving access to status information and the relevant control functions; where security is required, control and parameter settings can be allocated to the password protected Supervisor menu. The advantage of this approach is that it ensures that only the menu pages that are required are visible to users, which again simplifies overall operation.
The integrated data logging option can be configured to log process values, set points and alarms by recording historical data for export to a standard .csv file. There is also a facility to provide on-screen trend and alarm views. Functionality is extended still further by the profile feature, which supports 255 segments for use in up to 64 profiles; supported segments include ramp, dwell, hold, loop, jump to profile. Profile control is possible from the controller, by remote input or timed via the integral real time clock.
ProVU is a standard ΒΌ DIN size, making it easy to retro-fit, has a universal input for thermocouple, RTD and linear DC signals, and a range of output options including relay, SSR driver, linear DC and triac; as the output options are modular, it is easy to match them to particular process requirements. Communications options include Modbus TCP Ethernet and RS485 Modbus RTU.
West Instruments, The Hyde, Brighton, BN2 4JU. Tel: 01273 606271. Fax: 01273 609990. Email: ian.collins@
This information was written by 4 Creative Marketing Ltd
Tel: 01296 660080. Fax: 01296 662274.
Email: info.calcontrols@