GE IC693CHS397E 5‑Slot CPU Main Baseplate

Description

Basic Hardware Information

‑ Total slots: 5 slots; slot‑0 = power‑supply slot; slot‑1 = dedicated CPU slot; slots 2‑5 for I/O / intelligent communication modules ‑ Back‑plane bus: Series 90‑30 parallel I/O expansion bus ‑ Expansion interface: 25‑pin D‑Sub female connector on right‑edge ‑ Max cumulative expansion‑cable length: 15 m; final expansion rack requires IC693ACC307 terminator plug ‑ Back‑plane 5 VDC rated total current: 270 mA for I/O modules total ‑ Mechanical: DIN‑rail mounting, metal frame + multilayer PCB back‑plane; weight approx 1.8‑2.0 kg ‑ Protection rating: IP20 (cabinet‑only installation) ‑ Operating ambient temperature: 0 ℃ ~ +60 ℃; storage temperature‑40 ℃ ~ +85 ℃; relative humidity 5‑95 % non‑condensing ‑ Handling note: ESD‑sensitive hardware; anti‑static wrist‑strap required during module insertion / removal ‑ Compatibility: Series 90‑30 CPU and I/O modules only; incompatible with Series 90‑70 / VersaMax hardware; can host intelligent communication modules (BEM, CMM) directly on‑board。

Core Functions & Features

1. Compact main‑rack back‑plane, provides mechanical mounting, 5 VDC power distribution and parallel bus signal interconnection for power‑supply, CPU, I/O and communication modules, suitable for space‑limited control cabinet scenarios.
2. Supports installation of intelligent communication modules (Genius BEM331, CMM series) in slots 2‑5; no requirement for 10‑slot IC693CHS391 main‑baseplate.
3. Right‑side 25‑pin D‑Sub expansion port supports daisy‑chaining multiple expansion baseplates to expand overall I/O capacity.
4. Fixed physical slot addressing: CPU must install in slot‑1, power‑supply occupies far‑left slot; physical slot position directly corresponds to PLC hardware‑configuration slot‑numbering; default rack number is Rack 0 for CPU main‑baseplate。
5. Revision‑E corrects minor PCB errata from older revisions; direct drop‑in replacement for IC693CHS397‑A/B/D; no software modification required after replacement.

On‑site Installation & Commissioning Notes

1. Power‑off complete Series 90‑30 PLC system before inserting / removing modules or expansion‑bus cables. Secure baseplate firmly on standard cabinet DIN‑rail.
2. Install power‑supply at far‑left slot, CPU module in slot‑1, populate I/O / communication modules into slots 2‑5, press modules fully until locking tab clicks firmly.
3. Multi‑rack expansion wiring: Connect expansion‑cable from main‑rack D‑Sub port to first expansion‑baseplate. Mount IC693ACC307 terminator plug exclusively on D‑Sub port of last expansion rack in daisy‑chain. Tighten D‑Sub fixing‑screws. Route expansion‑bus cables away from high‑voltage AC power cables.
4. Download hardware configuration to CPU; verify all main‑rack and expansion‑rack modules are recognized inside programming software, monitor expansion‑bus fault status bits.
5. Replacement note: Cannot substitute with expansion‑only baseplate IC693CHS398. After baseplate replacement, double‑check module seating, expansion‑cable wiring and terminator location; perform full‑point I/O validation test.

Common On‑site Abnormal Conditions

‑ Partial / all modules unrecognized: Poor module insertion; back‑plane PCB trace damage; bent/broken pins on 25‑pin D‑Sub expansion connector. ‑ Intermittent I/O faults, expansion‑rack drop‑out: Loose D‑Sub connector; missing / misplaced IC693ACC307 terminator; total expansion‑cable length exceeds 15 m limit. ‑ Intelligent communication module fault: Module inserted into damaged back‑plane slot connector; insufficient 5 VDC back‑plane current budget. ‑ Random module fault bits: PCB contamination / corrosion; vibration‑induced poor module contact. ‑ Entire rack loss of back‑plane power: Power‑supply failure; insufficient seating of power‑supply module on back‑plane edge connector.