222 1100 Series WS MWS Reference Manual
7 Theory of Operation
Safety Lock Sensor Board (SLS)
Two hall sensors detect correct closure of the front door (needle arm
movement is interrupted, if front door is open). The front door is locked by an
electric magnet.
Unlocking the front door is done by pushing the button on the right side or
switching the power off/on.
Figure 39 Well-plate sampler block diagram
FPGA
theta
Z-Axis
X-Axis
Metering
Device
Injection
Valve
Limit switch signals
8-bit data
Encoder feedback data
Quadrature
decoder
FPGA chip
select
8-bit data
TPU
signals
I/O
signals
Peristaltic
Pump
Encoder
clocks and
direction
5-bit
address
Needle
Lock Device
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