{"product_id":"gv-21p-keyence-digital-cmos-sensor-amplifier-unit-main-unit","title":"GV-21P KEYENCE Digital CMOS Sensor Amplifier Unit Main Unit","description":"\u003ch3\u003eEngineering Overview \u0026amp; Digital Display Architecture\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eGV-21P\u003c\/strong\u003e\u003c\/span\u003e from \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eKEYENCE\u003c\/strong\u003e\u003c\/span\u003e is a high-performance digital CMOS sensor amplifier unit designed as a main control module for advanced industrial sensing tasks. Featuring a dual 7-segment display coupled with a 2-color 13-level bar LED indicator, this device provides operators with instant visual feedback on current and preset values. Automation engineers rely on the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eGV SERIES\u003c\/strong\u003e\u003c\/span\u003e amplifiers to manage high-speed switching and precise measurement evaluations across demanding production floors.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications \u0026amp; Electrical Parameters\u003c\/h3\u003e\n\u003ctable style=\"width: 99.9421%; height: 235.2px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003e\n\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eKEYENCE\u003c\/strong\u003e\u003c\/span\u003e Corporation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eModel \/ Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eGV-21P\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003e\n\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eGV SERIES\u003c\/strong\u003e\u003c\/span\u003e Digital CMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eDevice Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003eAmplifier Unit, Main Unit, PNP Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003eNormal: 2200 mW max., Eco-Half: 1700 mW max., Eco-All: 1600 mW max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003ePower Voltage Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003e10 to 30 VDC, including Ripple (P-P) 10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eControl Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003ePNP Open Collector x 2 channels, 30 VDC max. \/ 100 mA max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eControl Input Functions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003eEmission stop, Bank switching, Shift, Timing (Response time: 20 ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eSelectable Response Times\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003e1.5 ms \/ 3 ms \/ 10 ms \/ 20 ms \/ 50 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eEnvironmental Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003eOperating Temp: -10 to +55 °C, Humidity: 35 to 85% RH (No condensation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eVibration \u0026amp; Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003e10-55 Hz amplitude 1.5 mm; Polycarbonate housing with Polyacetal key tops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 26.5978%; height: 19.6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 71.4891%; height: 19.6px;\"\u003eApprox. 110 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eInstallation \u0026amp; Panel Mounting Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the unit securely onto standard DIN rails inside control enclosures.\u003c\/li\u003e\n\u003cli\u003eInterlock multiple expansion units correctly if auxiliary channels are deployed.\u003c\/li\u003e\n\u003cli\u003eConnect DC power lines to the designated terminals ensuring voltage stays within 10 to 30 VDC.\u003c\/li\u003e\n\u003cli\u003eRoute PNP output and control input wiring away from high-voltage power cables to avoid cross-talk.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommissioning \u0026amp; Operational Usability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelect appropriate response time modes (1.5 ms to 50 ms) depending on target conveyor velocity.\u003c\/li\u003e\n\u003cli\u003eProgram preset thresholds easily using the tactile front-panel key tops.\u003c\/li\u003e\n\u003cli\u003eUtilize bank switching inputs to save and recall multiple product inspection profiles instantly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEquipment Compatibility \u0026amp; System Integration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with KEYENCE GV series digital CMOS sensor heads.\u003c\/li\u003e\n\u003cli\u003eInterfaces cleanly with standard PNP PLC input cards and automation relays.\u003c\/li\u003e\n\u003cli\u003eSupports external emission stop commands for safety interlocking sequences.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuality Standards, Warranty \u0026amp; Fulfillment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered to meet rigorous industrial durability and EMC guidelines.\u003c\/li\u003e\n\u003cli\u003eBacked by a dependable 12-month operational replacement warranty.\u003c\/li\u003e\n\u003cli\u003eExpedited dispatch within 24 to 48 hours utilizing global carriers FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Industrial Applications \u0026amp; Suitable Equipment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-speed electronic component sorting and verification lines.\u003c\/li\u003e\n\u003cli\u003ePrecision edge-detection and thickness-checking machinery.\u003c\/li\u003e\n\u003cli\u003eAutomated packaging inspection stations requiring rapid response times.\u003c\/li\u003e\n\u003cli\u003eAssembly conveyor positioning and part-present validation setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuilt-In Diagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReal-time residual voltage tracking to flag overloaded PNP output channels.\u003c\/li\u003e\n\u003cli\u003eDual-color bar indicators that signal marginal detection limits before failure occurs.\u003c\/li\u003e\n\u003cli\u003eFault status LED indicators for immediate identification of emission and timing errors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eDuring a high-speed semiconductor sorting line upgrade, technicians experienced intermittent output drops on the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eGV-21P\u003c\/strong\u003e\u003c\/span\u003e amplifier when handling ultra-fast parts. Field analysis revealed that the response time was set too slow for the rapid product stream, causing missed trigger states. Switching the response time setting down to 1.5 ms and securing the DIN rail ground reference completely stabilized the PNP output pulses and eliminated sorting errors.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e What causes the control output LEDs to flash during machine operation?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e Flashing indicators typically signify an overcurrent condition on the PNP output or a near-threshold detection state that requires sensitivity adjustment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e Can this main unit power multiple expansion amplifier units?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e Yes, power is distributed across connected expansion units via backplane connectors, provided total current draw remains within power supply limits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e How do I switch between different pre-programmed inspection settings?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e Utilize the external bank switching input terminal or configure the setting directly through the digital front panel interface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e What maintenance checks are recommended for the enclosure housing?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e Periodically inspect the polycarbonate display cover for dust or oil accumulation, wiping it clean with a soft anti-static cloth during scheduled shutdowns.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e How does the Eco-All mode affect power consumption?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e Eco-All mode reduces display illumination and internal power draw to a maximum of 1600 mW, lowering thermal buildup in crowded control cabinets.\u003c\/p\u003e\n\u003ch3\u003eSelection \u0026amp; Purchasing Guide\u003c\/h3\u003e\n\u003cp\u003eWhen selecting a sensor amplifier for high-speed industrial measurement, verify that your control architecture requires a PNP output configuration. Ensure your input voltage matches the 10 to 30 VDC operating window. Purchasing verified automation hardware guarantees dependable factory performance and long-term signal accuracy.\u003c\/p\u003e","brand":"Keyence","offers":[{"title":"Default Title","offer_id":50493641982134,"sku":"GV-21P","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/GV-21P-3.jpg?v=1790059043","url":"https:\/\/www.plcsparehub.com\/products\/gv-21p-keyence-digital-cmos-sensor-amplifier-unit-main-unit","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}