UL FC-33 Product Manual

FC-33 DC SELECTABLE INPUT
ISOLATED SIGNAL CONDITIONER
Product Guide
FC-33
LEVEL
CAL
C
Description:
The FC-33 is a DIN rail mount, selectable input / output signal conditioner with 1500VDC isolation
between input and output and 1500VDC isolation from 24 volt power and input / output. The field
configurable input/output types allow a wide ranging capability for 0 - 5V, 0 - 10V, 0 - 20mA, 4 -
20mA .
The FC-33 has user selectable factory-calibration, but also has OFFSET (zero) and SPAN (full scale)
adjustments of the input signal. The OFFSET (zero) has an adjustment range of 0 to 25% of full scale
input, the SPAN (full scale) has an adjustment of 80 to 102%
Application
The FC-33 field configurable isolated input/output signal conditioner is useful in eliminating ground
loops and interfacing sensors to our PLC analog input modules. The FC-33 has 3 way isolation, this
feature solves many types of configuration problems. For example, the signal conditioner can be
configured for sinking input and sourcing output. It also allows signal translation from current input
to voltage output or voltage input to current output.
This feature would be useful when you have limited type and number of channels in your system
design, i.e. 8 channels of 4-20mA, 7 which are used and one transmitter that is 0 - 10V.
LEVEL LED
This LED is a powerful tool when setting up the signal conditioner. During normal operation the LED
will blink at a proportional rate to the selected input signal level. When performing field calibration
the LED is used for indication of the internal calibration process.
CAL - Pushbutton
This pushbutton along with various switch settings, allows you to calibrate the signal conditioner for
your application or restore factory default calibration.
Input Selection
The signal conditioner can be configured for either DC milliamps or DC volts. Input and
Output signal types are 0 - 5V, 0 - 10V, 0 - 20mA, 4 - 20mA .
1 2 3 4 5 6 7 8
3505 HUTCHINSON ROAD
CUMMING, GA 30040-5860
Input Ranges
0 - 5V
0 - 10V
0 - 20mA
*4 - 20mA
4 - 20mA
* Must connect jumper from V+ to I+ for current input
Specifications
Input Ranges
Input Impedance
Output Ranges
Load Impedance
Maximum Load / Current
Sample Duration Time
Filter Characteristic
Linearity Error
Stability
NOTE: All data 0-60°C except where specified.
Internal Analog convertor resolution is 12-bit
1
CAUTION: PRODUCT MAY BE DAMAGED IF CURRENT OUTPUT (I+/I-) AND VOLTAGE OUTPUT (V+/V-) ARE
BOTH CONNECTED TO LOADS.
DO NOT TIE THE I+ TERMINAL TO THE V- TERMINAL.
EXAMPLE:
4 - 20 mA INPUT
0
4 - 20 mA OUTPUT
1
Switch Position
Output Ranges
1 2 3 4 5 6 7 8
1 0 1 1
0 0 1 0
1 0 0 1
1 0 0 0
0 - 5V
1 1 0 1
0 - 10V
1 0 0 0
0 - 20mA
0 1 0 0
4 - 20mA
0 0 0 0
Factory Default Settings
4 - 20mA 1 0 0 0 0 0 0 0
0-5V, 0-10V, 0-20mA, 4-20mA
250Ω ±0.1% current input
200KΩ / 400KΩ Voltage Input
0-5V, 0-10V, 0-20mA, 4-20mA
2KΩ minimum, voltage output
0Ω minimum, current output
550Ω @ 24V sink/source
10mS
-3dB @ 3Hz , -6dB/octave
0.05% FSO maximum
0.05% FSO Maximum
Adjustments
The FC-33 has built-in self-calibration, but also has OFFSET (zero) and SPAN (full scale) adjustments
of the input signal. If your application requires, different span or offset (i.e. 3.6mA offset and 19.6mA
span) you can adjust accordingly.
Application Adjustments
Calibrating the Input Signal Level -
1 Select the signal range (i.e. 4 - 20mA).
2 Connect 24 volt power to the signal conditioner.
3 Connect the minimum input signal level.
4 Turn Switch 2 ON, press and hold the CAL pushbutton until the LEVEL LED comes ON steady
(approx. 3 seconds), then release immediately. If the pushbutton is NOT released while the Level
LED is ON steady, the signal conditioner will return to factory calibration.
5 Repeat above sequence for maximum input signal.
6 Turn Switch 2 OFF.
To return to factory calibration-
1 Turn switch 2 ON, press and hold the CAL pushbutton until the LEVEL LED comes ON steady and
then starts flashing (approx. 10 seconds), then release the pushbutton. The unit has now been
returned to factory calibration.
2 Turn Switch 2 OFF.
General Specifications
Accuracy vs. Temperature
± 0.005% / °C (50 ppm / °C)
Input Power 24VDC ± 10% @ 50mA
0.032A Littelfuse Series
Recommended Fuse
217 Current Inputs
1500VDC input - output
1500VDC power - input
Isolation
1500VDC power - output
* applied for 1 second
Maximum Inaccuracy of Output
0.05% FSO @ 25°C
(Includes Offset, Span, Linearty) 0.25% FSO @ 0 - 60°C
Output Current
21mA Maximum (for mA output)
0 - 25%
Approximate Field Calibration (0 - 1.5V / 5V Mode)
Range
80 - 102%
(4 - 5.1V / 5V Mode)
Operating Specifications
Operating Temperature
0 to 60°C (32 to 140°F)
Storage Temperature
-20 to 70°C (-4 to 158°F)
Relative Humidity
5 to 90% (non-condensing)
Environmental Air
No Corrosive Gases Permitted
Vibration
MIL STD 810C 514.2
Shock
MIL STD 810C 516.2
Noise Immunity NEMA ICS3-304
P.1