New low-cost math module provides a frequency/pulse output to compute total flow, volume, weight, energy, etc. 

PC-configured signal conditioner executes complex mathematical equations on process variable input signals and provides a scaled pulse output for use with counters in integrator/totalizer applications to calculate cumulative quantities.

Acromag’s IntelliPack^® math modules compute complex user-defined equations and convert DC input signals to scaled frequency or pulsed outputs. They are ideal for isolating and interfacing preprocessed analog signals to a PLC, controller, or counter. Typical applications include integration and totalization of flow, volume, weight, energy, and other scaled or computed variables. In many batch operations, a scaled pulse train output is sent to a counter to determine accumulated totals where each output pulse represents a specific quantity (e.g. gallons, kilograms, BTUS, etc.). Windows 95/98/NT software configuration speeds setup of I/O ranges and equations. Prices start at just $325 for the single channel 895M model and $375 for the dual channel 896M.

896M modules accept two input signals (0-20mA or 0-10V DC) and provide two frequency or pulse-width modulated outputs (0-10KHz or 0-36,000 pulse counts/hr). Additionally, two solid-state relays provide local controls or alarms. Each of the four outputs has a unique, user-defined equation. These equations allow each output to operate independently or in relation to the other outputs. On relays, status is determined by zero/nonzero computations or true/false conditions.

The math/computation equations are entered into the IntelliPack configuration software in a freeform format, the same as in most popular spreadsheet programs. Supported operations include basic arithmatic, square root, exponential, logarithmic, trigonometric, conditional/logical arguments, min/max, track & hold, and many other functions. A simulator screen provides instant feedback to test equations and see the output response before actual installation.

Math Functions:

• Add, subtract, multiply, divide
• Square root, exponential (eⁿ) and power (Xⁿ)
• Logarithmic (natural and base 10)
• Sine, cosine, tangent, and inverse
• Absolute value
• Minimum/maximum
• Conditional arguments and Boolean logic (if, then, else, and, or, >, <, <>, =, <=, >=)
• Input scaling
• High/low signal selector or discriminator
• Track and hold

Numerous special features make these math/computation modules both very easy to use and durable for industrial environments. IntelliPacks have an advanced microcontroller with integrated, downloadable flash memory and EEPROM for intelligent signal processing. Built-in self-diagnostic routines operate upon power-up and during operation for easy maintenance and troubleshooting with LEDs. Four-way isolation separates inputs, outputs, relays, and power from each other to prevent ground loops and protect equipment from high-voltage transients. EMC-compliant, ruggedized circuitry provides increased transient immunity and low radiated emissions.

To accommodate a broad range of applications, IntelliPack math modules are extremely flexible. Two independent frequency output channels support individual scaling of output signals. Pulse output supports integrator and totalizer applications using an external counter to calculate flow, volume, weight, energy, etc. The pulse-width modulation capability allows the user to vary the output signal’s pulse width on-time for a user-defined carrier frequency. Ultra-low frequency pulses accommodate integration applications as slow as 10 cph. High-voltage open-drain outputs interface to a variety of discrete level devices and to TTL level systems with the use of internal 5V pull-ups.

The IntelliPack configuration software simplifies selection of the operating parameters and definition of the equations. Four 50-character equation fields offer ample space for entry of complex transfer functions. Separate equations control each frequency and relay output. Equations can be independent or include output values of other channels. Engage the two SPST solid-state relays to provide on/off control or local process alarms with selectable failsafe/ nonfailsafe capability. Adjustable zero dropout level applies a minimum input threshold that filters noise and unwanted signals to prevent erroneous pulses. And, a track and hold function maintains the output frequency at the occurrence of a critical event.

Acromag, a multimillion dollar international corporation, has been manufacturing and developing measurement and control products for more than 40 years. They offer a complete line of industrial I/O products including process instruments, signal conditioning equipment, data acquisition boards, distributed I/O systems, and communication devices.

For more information about Acromag products, call the Inside Sales Department or Marketing Communications at (248) 624-1541, (800) 881-0268, FAX (248) 624-9234, or write Acromag, Inc. at P.O. Box 437, Wixom, MI 48393-7037 USA. Information is also available on the Acromag web site at http://www.acromag.com.com.

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896M Data Sheet: : PDF (323 KB)
IntelliPack Math module section

January 20, 2000

Contact:
Sales - Inside Sales
(e-mail: sales@acromag.com)
Editorial-Robert Greenfield, Marketing Communications Manager
(e-mail: rgreenfield@acromag.com)

IntelliPack is a registered trademark of Acromag, Inc.
All other trademarks are the property of their respective owners.