• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • GE IC694ACC311 Low-Density I/O Screw Terminal Block (Rack Accessory)

                                                                                  Overview

                                                                                  IC694ACC311 is a detachable screw-type terminal accessory for GE Series 90-30 low-density 16-point I/O modules, fully compatible with PACSystems RX3i dual-bus backplanes for mixed legacy IC694 I/O and IC695 new hardware deployment. It is the dedicated wiring base for standard 16-channel DI/DO modules, separate from the high-density IC694TBB032 terminal block, and sold in factory packs of 6 pieces per package.

                                                                                  

                                                                                  Core Specifications

                                                                                  • Terminal quantity: 20 screw terminals (16 signal channels + 4 public power/ground terminals)
                                                                                  • Connection method: Screw clamp terminal, tightening torque 7 lb-in
                                                                                  • Applicable wire: 14–22 AWG solid/stranded copper wire
                                                                                  • Rated voltage: 600V AC/DC low-voltage signal circuit
                                                                                  • Mechanical structure: Plug-in detachable design, can be separated from I/O module without disconnecting field cables
                                                                                  • Operating temperature: 0°C ~ +60°C indoor industrial cabinet
                                                                                  • Package standard: Factory packaging contains 6 individual terminal blocks
                                                                                  • IP rating: IP20 dustproof plastic housing

                                                                                  Compatible I/O Modules (Low-Density 16-point Series 90-30)

                                                                                  1. Digital Input: IC694MDL645 (16DI)
                                                                                  2. Digital Output: IC694MDL740 (16DO)
                                                                                  3. Partial low-density analog modules with standard rear connector
                                                                                      
                                                                                     Cannot match 32-point high-density I/O modules (IC694MDL655 / MDL754), those require IC694TBB032 instead.

                                                                                  Key Functions

                                                                                  1. Detachable quick maintenance
                                                                                      
                                                                                     The entire terminal base can be pulled off the I/O module while field wiring remains intact. When replacing faulty 16-point DI/DO boards, no re-termination of field cables is needed, drastically cutting maintenance downtime.
                                                                                  2. Anti-vibration screw wiring
                                                                                      
                                                                                     Screw clamping structure prevents loose wiring contact caused by cabinet vibration in power plants, chemical plants and mining sites.
                                                                                  3. Unified signal & power wiring
                                                                                      
                                                                                     Centralizes 16-channel signal and common 24VDC power terminals on one block, standardizing cabinet wiring layout for easy inspection and fault troubleshooting.
                                                                                  4. Legacy system upgrade compatibility
                                                                                      
                                                                                     Supports mixed installation with RX3i CPU and IC695 series modules on dual-bus backplanes, retaining original Series 90-30 16-point I/O wiring without full cabinet reconstruction.
                                                                                  5. Dust & debris protection
                                                                                      
                                                                                     Integrated plastic housing shields internal terminals from metal scraps, dust and moisture to avoid short-circuit faults.

                                                                                  Distinction from Similar Models

                                                                                  1. IC694ACC311: Low-density 16-point I/O terminal block (20 terminals, screw type)
                                                                                  2. IC694TBB032: High-density 32-point I/O terminal block (36 terminals, box screw)
                                                                                  3. IC694ACC310: Blank slot filler dummy module (pure mechanical rack cover, no wiring function)

                                                                                  Compatible System Equipment

                                                                                  • RX3i universal backplanes: IC695CHS007 (7-slot), IC695CHS012 (12-slot)
                                                                                  • RX3i CPU modules: IC695CPE305, IC695CPE305BGAE
                                                                                  • IC695PSD140 rack power supply, IC695LRE001 expansion module
                                                                                  • Series 90-30 low-density I/O modules: IC694MDL645, IC694MDL740
                                                                                  • Proficy Machine Edition programming software

                                                                                  Typical Applications

                                                                                  • Thermal power plant turbine auxiliary PLC cabinet 16-point DI/DO wiring
                                                                                  • Petrochemical pump, valve feedback and solenoid valve signal connection
                                                                                  • Water treatment pump station discrete signal terminal wiring
                                                                                  • Old Series 90-30 PLC system upgrade & renovation projects

                                                                               
                                                                               

The structure and details of the product：