10302/2/1 | Honeywell Watchdog Repeater Module

The watchdog repeater 10302/2/1 is a module that monitors the 5 Vdcand 24 Vdc supplied to the I/O modules. The watchdog output of thewatchdog repeater is connected to the watchdog input of those outputmodules 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 to5 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 powersupply.• if the 24 Vdc is supplied via a power supply which can providesupply voltages that exceed 31.0 Vdc. (The maximum outputvoltage of the 24 Vdc supply must be less than 37 Vdc under anysingle 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 thenon-redundant I/O part.• in configurations with redundant Central Parts and non-redundantI/O, in order to monitor the 5 Vdc power supply (if no 5 Vdcmonitoring is done).