Product Description:
watchdog repeater is required in multiple-PSU configurations, for each subsequent 24 Vdc to 5 Vdc power supply unit, e.g. PSU 2, 3, 4.
watchdog repeater is required if the 24 Vdc is supplied via an M24-20 HE or M24-12 HE powersupply.
watchdog repeater is required 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.)
watchdog repeater is required if the required watchdog current exceeds 900 mA.
watchdog repeater is required 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.
watchdog repeater is required 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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