GE IC670MDL640 Field‑Control 24VDC Positive / Negative Logic Discrete Input Module

Description

Hardware & Electrical Specifications

‑ Model：IC670MDL640 ‑ Part Number：IC670MDL640 ‑ Module Type：Field‑Control 16‑Point 24VDC Pos/Neg Logic Discrete Input Module ‑ Mounting：Plug‑in onto Field‑Control BIU base unit, DIN‑rail mounting ‑ BIU backplane consumption：75 mA typical (all points ON); max 83 mA ‑ Input channels：16‑point discrete inputs, single common group ‑ Input voltage range：0‑30 VDC, nominal 24 VDC ‑ Logic threshold:  • Positive‑logic ON: +15 V ~ +30 V; OFF: 0 ~ +5 V  • Negative‑logic ON: ‑15 V ~ ‑30 V; OFF: 0 ~ ‑5 V ‑ Input current：3‑8 mA per channel ON‑state; 0‑1.5 mA OFF‑state; typical 7.5 mA@24VDC ‑ Input impedance：3 kΩ typical ‑ Response time：ON / OFF typical 6 ms; maximum 10 ms ‑ Isolation：250 VAC continuous; 1500 VAC 1‑minute withstand (field‑to‑logic bus); no isolation between channels within group ‑ Communication interfaces：Field‑Control local backplane to BIU, further to Genius‑bus ‑ Terminal：Removable screw‑clamp terminal block ‑ PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance ‑ On‑board protection：Field‑side transient surge suppression, hardware self‑diagnosis; no individual channel fuse ‑ Compatibility note：Cannot run standalone; must match Field‑Control BIU unit; full discrete‑loop simulation test mandatory after replacement.

Environmental Specifications

‑ Operating temperature：0 ℃ ~ +60 ℃ ‑ Storage temperature：‑40 ℃ ~ +85 ℃ ‑ Relative humidity：5%‑95% non‑condensing ‑ Installation location：Indoor industrial control cabinet, IP20 ‑ EMC compliance：IEC 61000‑6‑2 ‑ Certifications：CE, UL Class I Div 2 hazardous‑location certification

Mechanical Data

‑ Weight：approx 0.23 kg ‑ Dimension：Standard Field‑Control module form‑factor ‑ Handling note：ESD‑sensitive digital circuit, anti‑static wrist‑strap mandatory during handling ‑ Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Collect digital status signals from field limit switches, proximity sensors, push‑buttons and relay auxiliary contacts, supports both positive‑logic and negative‑logic wiring modes.
2. Convert field discrete signals into digital data, transmit to BIU over local backplane and upload to Genius‑bus master PLC.
3. LED status indication:   ‑ Green PWR：Module backplane power‑on and self‑test pass   ‑ 16 individual channel LEDs：Real‑time status for each discrete input point

Installation & Wiring Requirements

1. Cut off BIU rack power and field‑side 24VDC signal power before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling module.
2. Insert IC670MDL640 fully into Field‑Control BIU base slot and lock firmly.
3. Field‑signal and Genius‑bus wiring strictly follow GE Field‑Control hardware manual GFK‑0890G; use shielded twisted‑pair cable; separate signal cables from high‑power cables, connect shielding to dedicated protective ground terminal.
4. Complete protective grounding according to GE system specification.
5. After replacement: power‑on, verify PWR & channel LED status, perform full‑channel signal trigger test.
6. Replacement note: Verify BIU hardware and firmware compatibility; full discrete‑loop simulation test mandatory before unit put‑into‑service.