Revision 14
18 August 02, 2019
2.2 Motherboard
2.2.1 Description of the Motherboard
The motherboard is housed in an enclosure and consists of a large main board which houses
the system memory, system’s clock battery, the AC and DC power supplies, 6 isolated
analog outputs, 6 relays, 8 solenoids, 4 (Wet contact) discrete inputs and 4 (Dry contact)
discrete inputs. The type of enclosure the electronics is housed in will depend on the area
classification certification of the analyzer.
2.2.2 Boards Associated with the Motherboard
The main processor daughter board and an optional Ethernet card are associated with the
motherboard.
2.2.3 AC and DC Power Supply
The motherboard houses the AC and DC power supplies. The working AC voltage range is
100-230 VAC and the DC voltage range is 10-32 VDC.
If an AC supply is used, the analyzer uses the AC solenoid drivers which are black in colour.
If a DC supply is used, the analyzer uses the DC solenoid drivers which are Red in colour.
The analyzer can operate in a dual redundant power mode in which the DC power supply is
the backup if the AC power supply fails. It is important to note that in this mode the DC
solenoid drivers would be used.
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