Smart PSU 7SPCP355.300 Smart PSU57Vanderbilt Installation & Configuration Manual A6V1027695901.05.2016Number Description34 JP1 — Front tamper bypass must be fitted.35 Buzzer — Activated to locate the expander. See the X-BUS menu LOCATE[➙ 120] for more information.36 JP6 — Back tamper bypass. Must be fitted.37 Manual addressing switches — Enable manual setting of the ID of theexpander.38 X-BUS Status LED — Indicates the X-BUS status, when the system is in FullEngineer mode, as follows: Slow flash (every 1.5 seconds) — X-BUS communications status is OK. Quick flash (every 0.2 seconds) — Indicates one of the following:– Indicates the last-in-line expander for spur configurations.– Indicates a communications problem between two expanders. If twoadjacent expanders are flashing quickly, the problem exists betweenthose two expanders.39 LED — Not used.40 PSU Status LED.WARNINGThe combined maximum load current drawn from all 12V DC outputs (OP 1 - 8)plus COMM1, should not exceed 2.4A. Each individual output, and output A2,should not exceed 300mA. If the device current requires more than 300mA, it isrecommended to parallel the outputs.Adding extra expandersIf adding extra expanders to the G5 enclosure, you must ensure the front and backtampers are deactivated by fitting the appropriate jumpers. In a G5 enclosure, thefront and back tamper is handled by the enclosure itself and the SPCP355.300Smart PSU.7.1.1 Supervised OutputsThe SPCP355.300 Smart PSU supports three, open-drain, logical outputs, whichcan be supervised for tamper detection. Output tamper detection is enabled byconfiguration. Output tamper detection is enabled by connecting a 4K7 EoL resistorin parallel with the load device, such as an external bell. A power diode (1N4001for example, or similar) is also required, if not already present in the externaldevice.
