Tait TN9275 - Page 39

TB9400/TN9275 Installation and Operation Description 39
© Tait International Limited May 2023
Figure 1.9 PMU alarm thresholds and voltage limits when operating on DC
Time
0V
DC Input Voltage
Overvoltage Shutdown (HW)
Undervoltage Shutdown (HW)
Overvoltage Shutdown Reset (HW)
High Battery Voltage Alarm (SW Alarm)
Low Battery Voltage Alarm (SW Alarm)
Startup Voltage (SW)
Shutdown Voltage (SW)
Startup Voltage (HW)
Run Run
Stop Stop
Active Active
Off Off
Software Control &
Hardware Combined Hardware Behaviour
Software Alarm
(Low Battery Voltage)
Software Alarm
(High Battery Voltage)
30s delay 30s delay 30s delay