Configuration
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UDC3500 Universal Digital Controller Product Manual
131
Function Prompt
Lower Display
Selections or
Range of Setting
Upper Display
Parameter
Definition
IN5 LOW
–999. To 9999. Floating
(in engineering units)
INPUT 5 LOW RANGE VALUE
—This in engineering
units is displayed for all inputs but can only be
changed for inputs configured for linear or square
root transmitter characterization.
See the example in IN1 HI
RATIO 5
–20.00 to 20.00
Floats to 3 decimal places
RATIO ON INPUT 5
—Select the Ratio value you
want on Input 5.
BIAS IN5
–999. to 9999.
(in engineering units)
BIAS ON INPUT 5
—Bias is used to compensate the
input for drift of an input value due to deterioration of
a sensor, or some other cause. Select the bias value
you want on Input 5.
Final Input 5 Value = Input 5 * Ratio 5 + Bias 5
FILTER 5
0 to 120 seconds
No filter = 0
FILTER FOR INPUT 5
—A software digital filter is
provided for Input 5 to smooth the input signal. You
can configure the first order lag time constant from 1
to 120 seconds. If you do not want filtering, enter 0.
BURNOUT5
BURNOUT PROTECTION (SENSOR BREAK)
—
Provides most input types with upscale or downscale
protection if the input fails.
ATTENTION
For Burnout to function properly on
0-20 mA, 0-10 Volt or –1 to +1 Volt input types (or a
0-5V type that uses a dropping resistor), the
dropping resistor must be remotely located (across
the transmitter terminals). Otherwise, the input at the
instrument terminals will always be 0 (i.e., within the
normal operating range) when the sensor opens.
NONE
NO BURNOUT
—Input 5 display freezes at the last
valid value. If Input 5 is used for PV, then the
instrument assumes its pre-configured Failsafe
Output (selected in the CONTROL Set up Group)
when a failed input condition is detected (does not
apply for an input out of range). Diagnostic message
IN5 FAIL is intermittently flashed on the lower
display.
UP
UPSCALE BURNOUT
—Forces the Input 5 signal to
the full-scale value when the sensor fails. Diagnostic
message IN5 FAIL intermittently flashed on the lower
display.
The controller remains in Automatic control mode
and adjusts the controller output signal accordingly.
Summary of Contents for UDC3500
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