GEHigh Density Discrete Input Module, 5 V TTL and 10-50 V DC, for Series Six PLC Racks

Product Description

What this part is

A GE Fanuc IC600BF811A high-density discrete input module for the GE Series Six programmable logic controller. It accepts 5 V TTL logic-level signals and 10–50 V DC field signals, opto-isolates them from the PLC backplane, and presents them to the CPU as discrete input points for the user ladder program. It is an input module, not an output module and not an analogue or communications card.

Decoding the order code

IC600 is the GE Fanuc Series Six product family, part of GE Fanuc’s IC-prefix scheme and unrelated to Fanuc’s own A16B, A20B and A03B numbering. BF is the Series Six I/O and special-function board group. 811 is the 5 V TTL and 10–50 V DC high-density input module specification. A is the hardware revision letter; revisions run A through Z on this number and do not change the module’s electrical function.

Published specifications

Type: discrete (digital) input module, high density. Input signal levels: 5 V TTL logic and 10–50 V DC. Isolation: opto-isolated input circuits, isolated from CPU circuitry. Platform: GE Series Six and Series Six Plus PLC I/O racks and Model 60 CPU racks. Mounting: plug-in board into the Series Six backplane, which supplies module power and the data path. Supplied form: board complete with face plate. Enclosure rating: IP20, open-board protection for installation inside an enclosure. Revision on this unit: A. Origin: USA.

What these specs mean in practice

The dual 5 V TTL and 10–50 V DC capability distinguishes this module from the rest of the Series Six input range. Field devices at 115 V AC call for a different module, since the AC input modules carry separate numbers, including the 115 V AC groups in the same BF block. The inputs are opto-isolated and the board is IP20, so it belongs inside a control cabinet with clean DC field wiring. TTL-level inputs are sensitive to cable run length and noise pickup.

Mounting data

Series Six modules seat into the rack backplane, and GE specifies the dedicated insertion and extraction tool for the backplane connector. The rack slot’s I/O address assignment corresponds to the module’s configured point range.

What is not included

Module only. No Series Six rack or backplane, no CPU, no rack power supply, no field wiring terminal board or connector kit, no cables, no insertion/extraction tool, no programming software and no documentation.

Interchange guidance

IC600BF811A, IC600BF811 and BF-811A are the same module at revision A; other revision letters (B through Z, and the -RR reman suffix) are the same electrical specification. Neighbouring numbers are different modules: IC600BF810 is an isolated 115 V AC/DC input, IC600BF814 and BF815 are Type K and Type S thermocouple inputs, and IC600BF904 and BF913 are output modules. IC600BF942 is a bipolar analogue output and IC600BF943 the 4–20 mA version, so the BF number rather than the BF prefix defines the function. The matching IC600YB numbers are the equivalent boards in the Series Six Plus board-only form.