Campbell Hausfeld SDM-CAN Manual Do Utilizador

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Section 2.  Installation 
 
Figure 2-4  Using the Spring Loaded Terminal Blocks (Top Option) 
 
Figure 2-5  Using the Spring Loaded Terminal Blocks (Front Option) 
Where you need to install more than one wire in a single terminal connector, use 
only stranded wires and twist the wires together before inserting them in the 
terminal. This type of terminal is not suitable for use with multiple solid core 
wires unless the wires are joined externally, e.g. using a ferrule. 
Route the wires from the SDM-CAN interface to the datalogger connections using 
the shortest route. Avoid running them near cables which could cause noise 
pickup. In noisy environments use low capacitance signal cable with an overall 
foil screen, connecting the screen to the datalogger power ground.  
Where multiple SDM devices are in use connect them in parallel to datalogger 
SDM ports, making sure each device has a unique SDM address. Ensure that the 
maximum cable length between the datalogger and the SDM-CAN does not 
exceed 3 metres.  
An additional I/O terminal is provided on the SDM-CAN for use with dataloggers 
which support interrupt driven logging events. This might typically be used to 
enable the rapid capture of time critical CAN data, where the I/O port can be used 
to indicate to the datalogger that data has been captured and is available for 
immediate collection (see below). In most applications this function will not be 
used and the terminal need not be connected. Where it is required, it should be 
connected to a digital input on the datalogger. 
2.3.1  LED Status Indication 
When power is applied to the SDM-CAN the red ‘STATUS’ LED will flash to 
indicate the current status of the unit as a result of the power-up checks. 
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