IO-LC1, IO-LC3
I / O E x p a n s i o n M o d u l e s
4/04
8
Unitronics Industrial Automation
Linearity error
0.01% maximum of full scale
Common-mode rejection
>100dB @ DC, 50Hz, 60Hz
Offset drift
100nV / °C typ.
Gain drift
3ppm / °C typ.
Calibration and Zero
—2 to 12 calibration-points (zero-point not required), direct/indirect point
addressing for editing and deleting calibrated points.
—Zero and tare acquisition and/or editing.
—Auto zero tracking
Filter
Adjustable settling time up to 24 sec. See Note 2 for details.
Loadcell input values
Either one or two independent values, signed 16 or 24 bit. Each weight/strain
value may be represented in a different mode; representation modes are
selected via software.
Polarity
Fully bipolar operation – weight/strain values can be either positive or negative.
Representation modes
Net, Gross, Net Min, Net Max, uV/V or A/D Raw Value.
*
When uV/V is selected for one value, both values will be represented in uV/V.
**
The Net and Gross values may also indicate connection problems. See Note 3
for details.
Rounding
The Net, Gross, Net Min and Net Max values may be rounded by 1, 2, 5, 10,
20, 50 or 100.
Effective resolution
See Effective Resolution, page 10.
Status indicators
(OUT OF RANGE)
Red LEDs:
—Lit when the corresponding Loadcell is not connected to the input, or when
the input analog value exceeds the permissible range. See Note 3 for
details.
—Blinks when the external power-supply is not detected. See Note 4 for details.
Digital Input
Number of inputs
1
Input type
pnp (source)
Galvanic isolation
Dig. input to ext. supply
No
Dig. input to bus
Yes
Dig. input to Loadcell
No
Dig. input to digital outputs
No
Nominal input voltage
12 / 24VDC
Input voltage
0-5VDC for Logic '0'
9-28.8VDC for Logic '1'
Input current
5.5mA @ 12VDC,
11.5mA @ 24VDC
Response time
10mSec typical
Status indicator
(IN)
Green LED—Lit when the input is active. See Note 5.
Digital Outputs
Number of outputs
2 pnp (source)
Output type
P-MOSFET (open drain)
Galvanic isolation
Dig. output to ext. pwr
supply
No
Dig. output to bus
Yes
Dig. output to Loadcell
No
Dig. output to digital input
No
