Speed switches Mechanical centrifugal switch FS 90 Features –– Mechanical speed monitoring based on centrifugal force –– Fixed switching speed –– Switch with insulated make and break contact Optional –– As integrated centrifugal switch type FSL for combination with encoders and/or tachogenerators FS 90 Technical data - electrical ratings Technical data - mechanical design Switching accuracy Size (flange) ø87 mm Shaft type ø11 mm solid shaft Flange EURO flange B10 Protection DIN EN 60529 IP 55 Speed (n) ≤1.25 · ns ±4 % (Δn = 2 rpm/s); ≤ +20 % (Δn = 1500 rpm/s) Switching deviation cw-ccw ≤3 % rotation Switching outputs 1 output, speed control Range of switching speed 850...4500 rpm (ns) (Δn = 2 rpm/s) Output switching capacity ≤6 A / 230 VAC ≤1 A / 125 VDC Minimum switching current 50 mA Interference immunity EN 61000-6-2 Emitted interference EN 61000-6-3 Approval CE 1 Operating torque ≤2 Ncm Rotor moment of inertia 0.35 kgcm² Admitted shaft load ≤150 N axial ≤250 N radial Materials Housing: aluminium die-cast Shaft: stainless steel Operating temperature -30...+130 °C Weight approx. 900 g Connection Terminal box www.baumer.com/motion Subject to modification in technic and design. Errors and omissions excepted. ≈40 % of switching speed 8/7/2015 Switching hysteresis Speed switches Mechanical centrifugal switch FS 90 Part number FS 90 Terminal assignment View A - Connecting terminal mechanical speed switch ... Switching speed (ns) ... 850...4500 rpm (Δn = 2 rpm/s) Make contact Accessories Mounting accessories 1 2 3 4 K 35 Spring washer coupling for solid shaft ø6...12 mm K 50 Spring washer coupling for solid shaft ø11...16 mm K 60 Spring washer coupling for solid shaft ø11...22 mm 3 4 1 2 Break contact A M16x1.5 Subject to modification in technic and design. Errors and omissions excepted. Dimensions 2 www.baumer.com/motion 8/7/2015 HM95M23891