West Control Solutions MRC 9000 User Manual
Page 17

Section 1
1-11
Edition 3
Rev G
CURRENT OUTPUTS
Drivers
Any of over 20 values can be used to drive analog outputs (e.g. inputs, derived
variables, etc.)
Output Span
0 to 20mA or 4 to 20mA, nominal
Resolution
12 bits based on a 0 to 25.6mA span
Accuracy
±
0.1% of 20mA span reference accuracy
Compliance
650 ohm load
TOTALIZERS
Number
Four are included in the option
Digits
Nine, displayable with and without commas
Types
Continuous, preload count down, and pulse counting
Presets
One per totalizer
Pulsed Outputs
Fully configurable
COMPUTING CAPABILITIES
Derived Variables
Twelve
Math functions
Add, subtract, multiply, divide, average, exponential, log 10, log e, power 10, power e
Built-In Equations
Linear, polynomial, C to F, F to C, linear mass flow, DP mass flow, BTU, RH, Fo, ZrO
2
.
Other Functions
High select, low select, high peak, low peak, track and hold, 1 of 2 selector,
convert actuator
Custom Curves
Four 21 point curves, usable in multiple calculations
RH Calculation
Typically accurate to better than 1%
Clamps calculated value @ -10% and +110%
LOGIC CAPABILITIES
Actuators
Over 100 digital values are accessible
Derived Actuators
Twenty four combinations of 24 items
Logic Operators
NOT, OR, AND, parentheses
Timers
Four
Time/Date Combination Actuators
Six
POWER REQUIREMENTS
Line Voltage
Universal power supply, 85 min to 265 max. VAC 50/60Hz
Power Consumption
60 VA maximum
CONSTRUCTION
Enclosure
Gasketed cover, case, and windows. Structural foam case and cover with
plastic or glass window areas. Door lock available.
NEMA Rating
NEMA 3 standard, NEMA 4X optional
Conduit Openings
Four openings standard, 2 additional as required
Mounting
Panel, wall, or optional pipe mounting
Overall Dimensions
14.12 inches wide x 16.77 inches high x 7.75 inches deep
(358.65mm wide x 425.96mm high x 196.85mm deep)
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