Thermocouple Input Modules
The BusWorks 965PB Input Modules interface thermocouple and millivolt signals directly to a ProfiBus-DP network. The six-channel input modules do not require a separate bus coupler like modular or block I/O devices to deliver a more cost and space-efficient solution. Each module is an inch wide with the highest density footprint available for compact mounting on DIN-rails. Flexible power requirements support operation on 12-36V DC power supplies. Each unit accepts universal thermocouple/millivolt inputs with user selectable ranges for Type J, K, T, R, S, E, B, or N sensors and bipolar 𫏌 mV or ۫ V DC signals. The 16-bit sigma-delta A/D converters deliver highly accurate measurements. Built-in CJC sensors are also employed on each terminal block for more precise temperature measurements. A thermocouple break detection feature senses wiring failures and invokes upscale or downscale failsafe output. Three-way 1500 V AC isolation between the input, network and power circuits protects against surges and ground loops.