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English | SNAP-AILC-2 SNAP Load Cell Input Module, 10 VDC Excitation, 3 or 4 mV/V Input Sensitivity |
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VDC power source (purchased separately), the module provides isolated 10 VDC bridge excitation for up to four 350 ohm
or 415 ohm load cells.
The SNAP-AILC-2 is primarily used with high-quality 4 mV/V load cells to gather data from force measurement testing.
Part of the SNAP PAC System, the module mounts on a SNAP PAC rack with a SNAP PAC brain or rack-mounted
controller. Analog, digital, and serial I/O modules can all be on the same rack. Such an I/O unit is also well suited for PC-
based control or for use as intelligent remote I/O for an Allen-Bradley RSLogix PLC system, such as ControlLogix,
MicroLogix, or CompactLogix.
NOTE: In addtion to SNAP PAC brains and R-series controllers, this module also works with the following legacy brains, if
they have firmware version R6.1c or newer: SNAP-B3000-ENET, SNAP-ENET-S64, SNAP-UP1-ADS, and SNAP-UP1-M64.
| Input Range Sensitivity: SNAP-AILC SNAP-AILC-2 | 2 mV/V or 3 mV/V (Over range ± 2.2 mV or ± 3.3 mV) 3 mV/V or 4 mV/V (Over range ± 3.3 mV or ± 4.4 mV) |
| Input Resistance | 100 Megohms differential |
| Resolution: Analog Scale Points | >22 bits + sign (± 6,400,000 counts = ± 100% of scale) |
| Response Time, Data Freshness | See the following table |
| DC Reversal (Input) | 0.015% (±1000 counts of reading @ 6,400,000 F.S.) |
| DC Common Mode Rejection | >-120 dB |
| AC Common Mode Rejection | >-120 dB at 60 Hz |
| Maximum Survivable Input | ± 15 volts across module load cell connector |
| Maximum Operating Common Mode Voltage | 250 V |
| Accuracy (% Full Scale): Offset Gain | ± 0.05% (= 3,200 counts out of 6,400,000, out of box) ± 0.05% (= 3,200 counts out of 6,400,000, out of box) |
| Usable Resolution at Default Configuration (Fast) | 38 nV - sign and 19 bits (±524,288 counts @ channel 2) At filter weight 64, settles to 99.9% of final reading in 3.9 s. |
| DRIFT: Gain Offset | 40 PPM / °C 10 PPM / °C |
| Isolation: Optical | 4000 V |
| Isolation: Transformer | 1500 V |
| Rack Power Requirements | 5.00 VDC to 5.20 VDC @ 120 mA |
| 24V Bridge Supply: Input Voltage Input Current Output Fault Current | 24 VDC nominal (22 V min. to 30 V max.) 40 mA for one load cell or 115 mA for four load cells 124 mA typical (field fault—shorted bridge) |
| Ambient Temperature: Operating Storage | 0 to 70 °C -25 to 85 °C |
| Torque, hold-down screws | 4 in-lb (0.45 N-m) |
| Torque, connector screws | 5.26 in-lb (0.6 N-m) |
| Agency Approvals | CE, RoHS, DFARS |
| Warranty | Lifetime |