Mesa SPINX1 Manual 

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CONNECTOR AND SIGNAL LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INPUT CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 OUTPUT CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 OPERATION INPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5V POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 MONITOR LEDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 ANALOG OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 ISOLATED OUTPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

control. The SPINx1 takes three TTL level signals, PWM,DIR and ENA and has four isolated outputs: CW, CCW, ENA and VOUT. VOUT is a buffered analog voltage proportional to the PWM input and the externally supplied analog reference voltage (5 to 15VDC).

connections. PIN FUNCTION LEVEL 1 GND 2 GND 3 PWM ACTIVE HIGH 4 ENABLE ACTIVE LOW 5 DIR HIGH = CW 6 +5V OUTPUT CONNECTOR 10 pin 3.5 MM terminal block TB1 is used to the SPINX1s isolated output connections. TB1 is normally split to a 3 pin connector for the anlaog out and a 6 pin connector for the isolated digital outputs. PIN FUNCTION DESCRIPTION 1 SP- SPINDLE ANALOG OUT LOW 2 SPV SPINDLE ANALOG OUT 3 SP+ SPINDLE ANALOG OUT HIGH 4 NC NOT USED 5 ENA- SPINDLE ENABLE - 6 ENA+ SPINDLE ENABLE + 7 CW- SPINDLE CW- 8 CW+ SPINDLE CW+ 9 CCW- SPINDLE CCW- 10 CCW+ SPINDLE CCW+

and direction. The ENABLE input is active low, that is it must be pulled low to enable analog and digital outputs. The PWM signal is active high. The PWM signal is terminated with 220/330 ohm termination resistors for signal fidelity. The DIR input is high for CW and low for CCW 5V POWER The SPINX1 requires ~50 mA of 5V power for operation. This is applied to TB1 input pins 1 and 6. MONITOR LEDS Monitor LEDs are provided on the PWM,ENABLE, and DIR lines. The enable LED illuminates when ENABLE is asserted, the CW or DIR LED illuminates when the direction is CW ANALOG OUT The SPINX1 provides an analog output for spindle control. The analog output is a isolated potentiometer replacement type device. It functions like a potentiometer with SP+ being the positive end of the potentiometer, SPV being the wiper and SP- being the negative end. The voltage on SPV pin out can be set to any voltage between SP- and SP+. Polarity and voltage range must always be observed for proper operation. The voltage supplied between SP+ and SP- must be between 5VDC an 15VDC with SP+ always being more positive than SP-. The analog output voltage is set by PWM from the controller. The optimum PWM frequency is approximately 5KHz, Higher frequencies will have lower ripple but more non-linearity, lower frequencies will have better linearity but more ripple. A 50% duty cycle PWM signal will result in a 50% voltage output. The voltage output is gated by the ENABLE interface signal, and forced to = SP- when enable is not asserted (enable is active low at the FPGA interface level). Because the analog output is isolated, bipolar output is possible, for example with SP+ connected to 5V and SP- connected to -5V, a +=5V analog output range is created. In this case the PWM output must be offset so that 50% PWM is generated when a 0V output is required. Note that if bipolar output is used, the output will be forced to SP- at startup or when ENABLE is false.

enable or other applications. These outputs are OPTO coupler Darlington transistors. They are all isolated from one another so can be used for pull up or pull-down individually. They will switch a maximum of 50 mA at 0 to 100 VDC. The ENABLE output is special as it uses the same signal that enables the analog output. When the analog output is enabled, the ENABLE OPTO output is on. The CW and CCW outputs can only be enabled then the ENABLE input is asserted. ENABLE IN DIR IN ENABLE OUT CW OUT CCW OUT 0 0 ON OFF ON 0 1 ON ON OFF 1 X OFF OFF OFF Note that the isolated outputs are all individual switches so must always have both the + and - pins connected with switch polarity observed.

4.75 5.25 VDC 5V POWER CONSUMPTION --- 50 mA ANALOG REFERENCE VOLTAGE 5 15 Volts (from SP- to SP+) ANALOG SUPPLY CURRENT C 5 mA ANALOG ISOLATION VOLTAGE C 2000 Volts DC (from input side) ANALOG OUTPUT NON-LINEARITY C 1 % at 5KHz ANALOG OUTPUT BANDWIDTH 60 C Hz ISOLATED OUTPUT CURRENT C 50 mA ISOLATED OUTPUT SWITCH VOLTAGE C 100 Volts DC ISOLATION VOLTAGE C 2000 Volts DC (From input side) OPERATING TEMP. 0 +70 oC OPERATING TEMP. (-I version) -40 +85 oC OPERATION HUMIDITY 0 95% NON-COND