{"product_id":"em-d-30","title":"EM-D-30","description":"\u003cp\u003eThe \u003cstrong\u003eEM-D-30\u003c\/strong\u003e is an amplifier board manufactured by Vickers for the Vickers Amplifier Boards series. This plug-in module conditions low-level control signals and supplies regulated coil current to electro-hydraulic valves, acting as the intermediary between PLC commands and proportional actuators in automated machinery.\u003c\/p\u003e\u003cp\u003eThe board length is \u003cstrong\u003e127.0 mm\u003c\/strong\u003e, giving it a compact footprint in rack assemblies, and its closed-loop bandwidth reaches \u003cstrong\u003e6 kHz\u003c\/strong\u003e at –3 dB, allowing fast valve response. The differential input will tolerate up to \u003cstrong\u003e10 V DC\u003c\/strong\u003e without damage. Faults are reported through an opto-coupled alarm output that isolates external logic. The power stage can deliver \u003cstrong\u003e600 mA\u003c\/strong\u003e into a 20 Ω load, with a supply-related drift of \u003cstrong\u003e±0.001 mA\/V\u003c\/strong\u003e; thermal drift is limited to \u003cstrong\u003e±0.4 mA\/°C\u003c\/strong\u003e, so commanded null current remains stable across cabinet temperature changes.\u003c\/p\u003e\u003cp\u003eUpstream of the power stage, the voltage amplifier provides a 6 V reference capable of 5 mA; its 24-hour stability is ±0.005 V DC, the warm-up shift is ±0.004 V DC, and the temperature coefficient is ±0.0002 V\/V. Supply sensitivity is contained to \u003cstrong\u003e±0.0001 V\/V\u003c\/strong\u003e, minimizing gain error from bus ripple. The pre-amplifier outputs \u003cstrong\u003e2 mA\u003c\/strong\u003e at a controlled 10 V DC level, establishing a fixed headroom for the voltage stage. Warm-up drift at null is capped at ±0.1 mA, preventing bias creep on start-up. For external monitoring, the voltage amplifier places a stable \u003cstrong\u003e6 V DC\u003c\/strong\u003e signal on a dedicated test pin while the opto-coupled alarm path remains unaffected.\u003c\/p\u003e","brand":"Vickers","offers":[{"title":"Unused Surplus","offer_id":51908057268525,"sku":null,"price":2293.67,"currency_code":"USD","in_stock":true},{"title":"Refurbished","offer_id":51908057301293,"sku":null,"price":1233.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/7696\/9517\/files\/em-d-30__fe6d3fac-ae90-45ba-82a6-0c7f6f6bc5d7.webp?v=1773213309","url":"https:\/\/servosupplier.com\/products\/em-d-30","provider":"Servo Supplier","version":"1.0","type":"link"}