Thermo Scientific 43iQ, Instruction Manual

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System Description
Common Electronics
Thermo Scientific 43iQ Instruction Manual 8-7
All electronics operate from a universal VDC supply, which is capable of
auto-sensing the input voltage and working over all specified operating
ranges. The 43iQ contains a 24 VDC channel for most electronics
operation, including the pump and fan, and a 48 VDC channel dedicated
specifically for optical bench heating.
Front panel electronic components include the touch screen display, the on
off switch, and two indicator LEDs for power and alarm status, as
described in operational detail in Chapter 2, “ Installation and Setup ”.
The iQ series instruments provide a number of methods for
communicating the instrument results to the operator or external
equipment. Every iQ series instrument includes a front panel display, 2
USB ports, and one Ethernet data port as standard equipment.
In addition, optional RS-232/485, analog I/O, and digital I/O ports are
available to provide data to external systems as described in Chapter 9,
“ Optional Equipment ”. The front panel GUI allows the operator to
configure these output communication channels as described in Chapter 3,
“ Operation ”.
The System Controller Board (SCB) contains the main processor, power
supplies, and a sub-processor, and serves as the communication hub for the
instrument. The SCB receives operator inputs from the front panel GUI
and/or over optional I/O connections on the rear panel. The SCB sends
commands to the other boards to control the functions of the instrument
and to collect measurement and diagnostic information. The SCB outputs
instrument status and measurement data to the GUI, Ethernet/USB, and
to the optional rear-panel I/O. The SCB plugs into the backplane via a
single connector and has physical retainers to secure placement.
The backplane board provides the routing and conditioning for +24 VDC
(op48 VDC) and RS-485 communications within the instrument.
It hosts the System Controller Board (SCB) and Peripherals Support Board
(PSB) via direct plug ins, and similarly hosts optional I/O (communication,
analog, and digital) with rear panel interfaces via direct plug in. It has
connections for RS485 communication with and powering of DMCs and
the Step POL Module. It additionally routes the front panel display and
driver, external USB and Ethernet.
Power Supply
Front Panel
I/O and
Communication
Components
System Controller
Board
Backplane Board