237-00156 SofTec Microsystems SRL, 237-00156 Datasheet - Page 55

• Manufacturer Part Number: 237-00156
• Description: BOARD ISOLATION FOR ST7
• Manufacturer: SofTec Microsystems SRL
• Type: Optoisolation Boardr

Specifications of 237-00156

• Contents: *
• For Use With/related Products: STMicro ST7FMC Motor Control Device
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Connectors and Functions
5.3.3 Sensorless Mode (Standard Method)
To drive a BLDC motor in Sensorless mode using classic method (dividers
and filters on each of the three phases and reconstruction of the motor
virtual neutral), the “Alternate Z Sampling” daughter board supplied with the
kit should be plugged in on the pins of the W14, W15 and W16 jumpers and
on the pins of the J11 connector. The W13 jumper must be removed. The J8
jumpers can be kept if the provided 2.2 nF filtering capacitors are compatible
with the filter needed.
Of course, motor-specific resistors and capacitors must be mounted on the
daughter board (see STMicroelectronics application note AN1946)
Additionally, the “Z Event Sampling Method” parameter, in the AK-
ST7FMC Control Panel (in the Advanced Settings dialog box) should be set
to “At PWM on, with delay, once”, to “At PWM on, with delay, at f
SCF
frequency” or to “At f
frequency”.
SCF
5.3.4 Sensor Mode
5
To drive a BLDC motor in Sensor mode, the W14, W15 and W16 jumpers
should select the lower position. The W13 jumper must be removed. The J8
jumpers can be kept to filter the sensor signal.
5.4 AC Motor Outputs and Feedback
An AC motor can be controlled in open or closed loop, as detailed below.
5.4.1 Open Loop
To drive an AC motor in open loop, the W14 and W15 jumpers must select
the lower position, the W16 jumper must be removed, and all of the J8
jumpers must be present.
5.4.2 Closed Loop
To drive an AC motor in closed loop, the W14 and W15 jumpers must select
the lower position, and the W16 jumper must be removed. Additionally, the
W13 jumper must be present, to feed the tachometer signal to the
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