Installation vacon • 724-hour service: +358 (0)40 8371 150 • Email: vacon@vacon.com22. SIN-COS OPTION BOARD OPT-AK2.1 OPT-AK layout and descriptionDescription: Encoder board for Vacon NXP with an input forSin/Cos type encoder.Programmable control voltage.Allowed slots: C (Sin/Cos signals can only be used in slot C)Type ID: 16715Terminals: One terminal block; Screw terminals (M2.6); No coding.Jumpers: X1 (see page 8)Board parameters: Yes (see page 9)Sin/Cos encoder produces a pair of analog sinusoidal signals. There are several sine cycles (forexample 1024 or 2048) per mechanical revolution.X1