Inputs I0 and I1 on a 1791ES-IB8XOBV4 went solid red one afternoon with the guard closed, and the DCS instruction in the GuardLogix 5580 behind them has held Input Status false ever since. The guard switch on the infeed has two NC contacts in one four-core cable, the cable was crushed where it enters the … Read more
Pick a discrepancy time for a 1791ES dual-channel input from the device that drives it, know which setting the DCS instruction sees, and clear the fault.
The 440R safety relay on the new guard, a 440R-S12R2, was showing PWR/Fault flashing red four times, IN steady red with the door shut, and the electrician had already swapped it for the spare, which did the same thing within a second of power-up. The guard switch is a single-contact tongue switch, and the link … Read more
The guard on the case packer came off its 440R-S12R2 on a Saturday and went onto a 1791ES-IB8XOBV4 under a GuardLogix 5580, same tongue switch, same two 100S-C09 contactors, and the first time the door was closed the DCS instruction reported Fault Code 16#4000 and would not take a reset. Channel A active, channel B … Read more