Rockwell Automation 937CU-DIFRQ_1 Universal Frequency Converter Installation Instructions - Manual (Page 5)

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Bul. 937
C Universal Frequency Converter Installation Instructions
Installation and Connection
Application Information
Bulletin 937 Intrinsically Safe
Convertes transmit signals
between field devices and a process control system/
control system.
They are suitable for the connection of field devices used in
potentially explosive atmospheres. Safe field circuits for
these devices are intrinsically safe and are galvanically
isolated from non-intrinsically safe circuits. establish an
electromagnetic separation between the potentially
explosive atmospheres and the safe areas in a system.
Typical applications for the Bulletin 937 universal
frequency converter are flow and RPM measurements.
The universal frequency converter accomplishes this by
converting an input frequency into a
frequency-proportional current which can, for example,
then be redirected to a display device or the analog input of
the process control system/control system.
Moreover, the universal frequency converter can be used
universal frequency converter as a signal divider and as a
rotational speed controller (limit-value display for MAX
alarm and for MIN alarm).