Honeywell 10302/2/1 Watchdog repeater (WDR) Honeywell 10302/2/1
honeywell plc
,honeywell 51199929 100
Product:Honeywell 10302/2/1 Watchdog repeater (WDR) Honeywell 10302/2/1
The watchdog repeater 10302/2/1 is a module that monitors the 5 Vdc and 24 Vdc supplied to the I/O modules. The watchdog output of the watchdog repeater is connected to the watchdog input of those output modules whose power supply (5 Vdc and/or 24 Vdc) is monitored.
A watchdog repeater is required in the following cases: • in multiple-PSU configurations, for each subsequent 24 Vdc to 5 Vdc power supply unit, e.g. PSU 2, 3, 4. • if the 24 Vdc is supplied via an M24-20 HE or M24-12 HE power supply. • if the 24 Vdc is supplied via a power supply which can provide supply voltages that exceed 31.0 Vdc. (The maximum output voltage of the 24 Vdc supply must be less than 37 Vdc under any single or double fault condition of the 24 Vdc power supply unit.) • if the required watchdog current exceeds 900 mA. • in configurations which combine redundant and non-redundant I/O, in order to create the watchdog output for the output modules of the non-redundant I/O part. • in configurations with redundant Central Parts and non-redundant I/O, in order to monitor the 5 Vdc power supply (if no 5 Vdc monitoring is done).
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