THORLABS PCS-6000 Series, Руководство пользователя

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Page 10 TTN200645-D02
PCS-6000 Series Motorized Patch-Clamp Micromanipulator Chapter 4: Orientation
Chapter 4 Orientation
4.1. Control Unit
The control unit supplies the drive signal to both the piezo actuators and the
drive motors. The drive board for the motors is on the top layer. The drive board
for the piezo actuators is on the bottom.
4.1.1. Front Panel
Figure 4–1 Front Panel of Control Unit
4.2. Motor Control Board
There are four receptacles on the motor control board. The motor drive circuits
are identical in all four channels. The motors should be plugged into their cor-
responding receptacle. The motors are stepping motors with a base micro-step
of 1.6
μm . The direction of the motor travel can be reversed by the small toggle
switch next to the receptacle.
The motor control board has two lights. The green " Power " light indicates that
the power to the board is on and that the board has completed its power on
routine. The yellow "
Move " light is lit only when one or more motors are being
moved.
When the joystick is displaced from its rest position, the microprocessor on the
motor board provides the proper current drive waveforms to the motor causing it
to move in the direction indicated by the joystick deflection. Within about ½ a
second after the joystick is returned to its rest position, the current to the motor
shuts down to a very minute holding current. This prevents the loss of position.
If an axis is commanded to move beyond its physical limits in either direction,
the axis motion stops but the motor continues to turn. This is called a “stall” con-
dition and does not harm the motor as long as the motor does not remain in the
stalled condition for a significant period of time (>15 seconds). Stall can be
detected when the "
Move " light is on but no motion is produced. The motor gen-
erates a clicking sound while in stall.