The SNAP-AILC input module works with 2 mV/V and 3 mV/V load cells as a load cell front end. Using a separate 24 VDC power source (purchased separately), the module provides isolated 10 VDC bridge excitation for up to four 350 ohm or 415 ohm load cells. Each module provides one channel of transformer and optically-isolated analog-to-digital conversion for load cell inputs. The module supports 6- or 4-wire load cells (4-wire is at reduced performance) and provides isolated 10 VDC bridge excitation for up to four parallel 415/350 ohm load cells as a load cell front end. 24 VDC is required at the separate connector on top of the module. The bridge and 10 VDC bridge power are isolated from the 24 VDC bridge source and the 5 VDC source used by the mounting rack. The 24 VDC input is reverse-polarity protected and may be used for multiple modules. The 10 VDC bridge source is current limited so that an external fault on the load cell is isolated and will not affect another load cell module.

IEC 950: 1991-09, 89/336/EEC, 2002/95/EC, Defense Federal Acquisition Regulation Supplement