Rotation sensor choices T256, T360, T500 & T512: Additional encoder electronics can be built into the encoder units. The
electronics adds two analog outputs, a voltage proportional to shaft velocity (similar to a tachometer) and a voltage
proportional to the angular position of the shaft. The analog outputs are easier to record than the digital encoder outputs,
which require high sampling rates. Both analog outputs are updated at each pulse of encoder output A, so they are
instantaneous, not average values. The encoder electronics will operate from a +6 to 16 Vdc, 400 mA power supply.
Temperature range is -40F to +185F.
Full scale for the angular position output is +10V for rotation in either direction.
Full scale for the velocity output is +10V for rotation in one direction and -10V for rotation in the opposite direction. Two
velocity sensitivities and direction of rotation are usually programmed into each unit. Two pins in the stator connector are
designated as option pins, through which the user selects 1 of 4 combinations. For example, units used on our torque wheels
are normally programmed to output 10V at 1000 rpm with option pin #1 open. With option pin #1 grounded, full scale is
1800 rpm. Option pin #2 sets the polarity, or direction of rotation, viewing the end of the shaft. With pin #2 open, CW
rotation results in a positive velocity output. When pin #2 is grounded, CCW rotation results in a positive velocity output.
