{"product_id":"8164-4002-alstom-gem80-32-channel-24-vdc-output-module","title":"8164-4002 ألستوم GEM80 وحدة إخراج 32 قناة 24 فولت تيار مستمر","description":"\u003ch3\u003eArchitectural Overview \u0026amp; Process Application\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8164-4002 (81644002)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-density, 32-channel digital output module developed by Alstom under the legacy GEM80 PLC platform. Purpose-built for industrial control applications requiring vast I\/O consolidation, this module handles 32 discrete 24 VDC outputs, with each channel rated to drive up to a 0.5 A load. It is widely utilized across heavy industrial plants—such as water treatment facilities, power generation stations, metal processing mills, and marine propulsion systems—to command field-side actuators, indicator lamps, intermediate relays, and solenoid valves. By interfacing directly with the central GEM80 processor backplane, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8164-4002 (81644002)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eexecutes status changes with minimal bus latency. This rapid signal transmission ensures crisp, real-time control execution, optimizes sequence interlocking, and minimizes operational downtime during complex process cycles.\u003c\/p\u003e\n\u003ch3\u003eHardware Infrastructure \u0026amp; Channel Layout\u003c\/h3\u003e\n\u003cp\u003eThe technical architecture of the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8164-4002\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodule focuses on density, signal isolation, and quick diagnostic verification.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Point Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a compact layout incorporating 32 distinct output pathways divided into manageable, commoned channel groups to maximize physical space efficiency in the PLC rack.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOnboard Status Visualization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe front panel contains a dedicated array of LED status indicators corresponding directly to each of the 32 channels, enabling instant visual confirmation of logic states for maintenance personnel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptocoupler Logic Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUses robust internal optocouplers to galvanically isolate the delicate GEM80 backplane logic circuits from field-side electrical surges, transients, and switching spikes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical \u0026amp; Electrical Performance Indexes\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEngineering Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8164-4002\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand \/ Series\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAlstom \/ GEM80 Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Classification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh-Density Digital Output Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eChannel Count\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e32 Channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNominal Operating Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24 VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMaximum Current Per Channel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTotal Module Load Capacity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSubject to group common limitations\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Galvanic Isolation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIntegrated (Optocoupled)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFront Panel Diagnostics\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eChannel status LEDs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e23.5 x 23.5 x 2.4 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNet Equipment Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.42 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 55 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eStorage Temperature Limits\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-20 to 70 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow do you locate the specific channel failure when a field device fails to pick up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBegin by checking the front panel LED indicator array on the 8164-4002 module. If the corresponding channel LED illuminates but the field actuator remains unenergized, use a multimeter to measure the 24 VDC voltage output directly at the terminal strip connector. If voltage is present at the module terminal, the issue resides in the field wiring or the actuator coil itself; if no voltage is present, the internal driving transistor for that specific point may be damaged.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the primary precautions when connecting highly inductive loads like large relay coils to this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach channel is strictly rated for 0.5 A. When driving inductive loads, the collapsing magnetic field can produce a reverse high-voltage transient (inductive kickback) capable of punching through the output transistors. To safeguard the module circuits, you must wire an external flyback diode (such as a 1N4007) in reverse parallel across the inductive load terminal points.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSince the Alstom GEM80 series is discontinued, what is the best strategy for handling hardware failures?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAs original factory manufacturing has ceased, direct repair lines are closed. Plant management should source certified Original New legacy inventory or fully tested remanufactured spares. To prevent an extended line stoppage, keep identical, verified replacement cards in an onsite, climate-controlled storage locker for immediate hotswap deployment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Engineering \u0026amp; Installation Protocol\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Isolation and Insertion Rules:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNever insert or extract the 8164-4002 module while the GEM80 chassis power supply is switched on. Swapping modules with live backplanes induces transient voltage arcs across the data bus connector pins, which can disrupt adjacent running processors and destroy the CMOS memory logic of the output board.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGroup Common Power Distribution:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 32 channels are grouped into commoned electrical banks. Ensure that your external 24 VDC field power supply wiring matches the specific group terminal assignments. Use appropriately sized copper conductors (minimum 18 AWG) for the common feed lines to accommodate the cumulative current load if all 32 channels are activated simultaneously.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosure Thermal Management:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen multiple high-density output modules are deployed in a single GEM80 rack panel, the combined power dissipation from the 0.5 A channel switches can generate significant heat. Maintain a minimum vertical spacing of 75 mm above and below the chassis for proper air convection. If the temperature inside the enclosure climbs past 45 deg C, integrate an active fan cooling system to preserve component longevity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Alstom","offers":[{"title":"Default Title","offer_id":53240108712299,"sku":"8164-4002","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/Alstom8164-4002.png?v=1778984714","url":"https:\/\/www.plcprotech.com\/ar\/products\/8164-4002-alstom-gem80-32-channel-24-vdc-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}