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Site Preparation aqd&stallation Instructions TLS -3 ST Monitoring System 14 • j 1 1 A 1 IN 0' C. MODULEXONNECTOR 1 Most TLS -350 systems will be shipped with mod- ules installed as ordered. If additional features are added at a later date, modules will be field in- stalled. In all cases, the position of the modules, their respective connectors and the devices wired to the connectors must be recorded to pre- vent improper replacement during installa- tion or service. A circuit directory is adhered to the back of the right-hand door for this purpose. (See Figure 10.) For safety, the module slots have been designed so that modules from the intrinsically safe and power areas cannot be interchanged. During programming, module positions and the devices wired to each module are identified and stored in memory. If a connector is removed and reinstalled on a different module or if an entire module with its connector is removed and rein- stalled in a different module slot, the system will not properly recognize the data being received. 1. Module Position. a. Record on the circuit directory the type of module in each slot location. b. Once a particular type of module has been installed in a slot, the system will always look for that type of module in that slot. No other type of module may be installed in that slot without reprogramming the system. c. If a system contains multiple modules of a single type (i.e., two Probe/Thermistor Inter- face Modules), they may be swapped between their respective slot locations, however, THE CONNECTORS MUST REMAIN WITH THEIR ORIGINAL LOCATIONS, NOT WITH THE ORIGINAL MODULES. 2. Connector Position. a. Identify all connectors according to their slot location using the self-adhesive num- bering labels furnished with each module. b. Once a device has been wired to certain termi- nals on a connector and the system has been programmed, the wires from that device may not be relocated to other terminals without reprogramming the system. c. Once devices such as probes, sensors, alarms, etc. have been wired to a connector on a module and the module and devices have been programmed to a particular module slot, the connector cannot be moved to another module in another slot unless the system is reprogrammed. 3. Circuit Directory. A circuit directory (see Fig- ure 10, "Circuit Directory—Example") appears inside the front -panel door. It should be filled out by the installer as the module connectors are being wired. The following information should be recorded for each slot: a. Module Type: Record what type of module has been installed in each slot, i.e., Probe/ Thermistor Interface, 4 -Relay Output, etc. b. Position: Record the physical location or type of device wired to each position on the connec- tor in that slot. In the example shown in Figure 10, slot 4 contains a Probe/Thermistor Interface Module. Position 1 on the connector receives the + and - wires from the probe in tank 1, position 2 from the probe in tank 2, etc. Since this system has five tanks, a second Probe/ Thermistor Interface Module is installed in slot 5 and its position 1 receives the wires from tank 5. Positions on each module are numbered and each terminal is identified. Eight spaces for each slot have been provided on the circuit directory al- though some modules accept fewer devices. 15