Automated Logic OptiFlex FIO User Manual

OptiFlex™ I/O Expanders (part no. FIO)
Automated Logic Proprietary and Confidential A Carrier Company. © 2022 Carrier.
Rev. 7/12/2022
All rights reserved.
22
Offset/Polarity values
Offset/Polarity is not particular to a type of input or output, but the driver handles analog and binary
inputs and outputs differently. To set these values appropriately, you should understand how the driver
uses them.
Offset/Polarity
Notes
Analog Input (BAI)
Offset
value (positive or negative) adds a fine adjustment to a sensor reading
after all scaling for calibration.
EXAMPLE
If a sensor reads 74.9°F when the actual measured value is 73.6°F,
enter an
Offset
of –1.3 to calibrate the sensor to the measured value.
RTD inputs require either sensor calibration or an estimated offset correction for
wiring resistance. Cable length and size affects RTD sensor accuracy. Use the
following information for a 100 ft. (30.48 m) cable as a guideline for entering an
offset. For shorter cable, scale the offset linearly. For example, for a 50 ft. cable,
use half the offset shown below.
RTD sensor
Offset for 100 ft. (30.48 m) cable
22 AWG
18 AWG
Platinum 1kOhm at 32°F (0°C)
(0.00375 TCR)
-1.5 -0.59
Nickel-iron 1kOhm at 70°F (21°C) -1.1 -0.43
Platinum TS-8000 1kOhm at
32°F (0°C) (0.00385 TCR)
-1.5 -0.59
Balco (nickel-iron) TS8000 1kOhm
at 70°F (21°C)
-1.4 -0.56
Cable resistance for signal and
ground wires (ohms)
3.1 1.24
Analog Output
(BAO)
You can use the
Offset
value (positive or negative) to calibrate an output, but you
generally do not need to. If used, the driver adds the offset value to the wire input
value before performing any scaling calculations to determine the FIO expander's
output.
Binary Input (BBI)
Polarity
determines the microblock's present value when no signal is received
from the equipment.
When no signal is received from the equipment, if
Polarity
is set to:
normal
—present value is
off
reversed
—present value is
on
Binary Output
(BBO)
Polarity
determines the FIO expander's output based on the control program's
signal to the microblock.
When the control program's signal to the microblock is
on
, if
Polarity
is set to:
normal
—output is
on
reversed
—output is
off
NOTE
Regardless of
Polarity
, the output will be off if the FIO expander loses
power.

Automated Logic OptiFlex FIO Specifications

General

Brand	Automated Logic
Model	OptiFlex FIO
Category	Extender
Language	English