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Probe and Sensor Wiring Precautions Connecting Probe/Sensor Wiring to the Console <br /> Module Position <br /> 1. Record on the circuit directory the type of module in each slot location. <br /> 2. If a system contains multiple modules of a single type(i.e.,two Probe/Thermistor <br /> Interface Modules),they may be swapped between their respective slot locations, <br /> however,the connectors must remain with their original locations,not with <br /> the original modules. <br /> Connector Position <br /> 1. Identify all connectors according to their slot location using the self-adhesive <br /> numbering labels furnished with each module.Accurately record on the circuit <br /> directory the location of each device wired to the connector as you attach wires to <br /> the module. <br /> 2. Once a device has been wired to certain terminals on a connector and the system <br /> has been programmed,the wires from that device may not be relocated to other <br /> terminals without reprogramming the system. <br /> Circuit Directory <br /> A circuit directory is adhered to the inside of the right-hand door.It should be filled <br /> out by the installer as the module's connectors are being wired. <br /> The following information should be recorded for each slot: <br /> ® Module Type:record what type of module has been installed in the slot,e.g.,Probe/ <br /> Thermistor Interface Module. <br /> ❑ Position Record:record the physical location and/or type of device wired to each <br /> terminal of the module connector in the slot,e.g.,Tank 1. <br /> In the example directory shown in Figure 10,slot 4 contains a Probe/Thermistor <br /> Interface Module.Position 1 on the connector receives the+and—wires from the <br /> probe in Tank 1,position 2 from the probe in Tank 2,etc. Since this system has five <br /> tanks,a second Probe/Thermistor Interface Module is installed in slot 5 and its <br /> connector position 1 receives the wires from the probe in Tank 5. <br /> Positions on each module are numbered and each connector terminal is identified with <br /> the acceptable input.There are eight positions for each slot even though some modules <br /> accept fewer devices. <br /> Grounding Probe and Sensor Shields <br /> Connect probe and sensor cable shields to ground in the console only. Do not ground <br /> both ends of the shield. <br /> Probe/Sensor Polarity <br /> Unless otherwise instructed,maintain polarity when connecting probes/sensors to the <br /> console modules. <br /> 34 <br />