Artesyn iHP - Figure 4-5 Isolated Output Enable to Externally Enable Module; Isolated Fault Signal

iHP Manual 52 | P a g e
iHP Owners Manual
Figure 4-5 Isolated Output Enable to externally Enable module.
4.2.1.1.6 Isolated Fault Signal
During a fault condition, the iHP module provides a fault signal to the system side. J1 Pin 10
SYS_M_FAULT# functions as the fault signal of the module. The signal is internally connected to an open
collector output. An external 2kohms pull-up resistor is required. The pull-up resistor should be
connected to a 5V supply. The maximum pull-up resistor voltage is 5V and the maximum sink current of
5mA.
The logic for this pin is configurable via module command SET_IO_ACTIVE_LEVEL_LOGIC (B7h) and can
change the correlation between the output state and the status of the module.
The default pin configuration is
 SYS_M_FAULT# logic Low = Module is at Fault.
 SYS_M_FAULT# logic High = Module is at normal operating condition.
Figure 4-6 shows recommended external circuits to control the enable pin.