Overtemp Status Flags; Fanfail Status Flags; Status Flags - KEPCO HSM 3.3-230 Operator's Manual

Table 3-2 provides an operating matrix of the output status function; see Figure 3-6 for timing
relationships. The output voltage fault limits are ±5% of programmed output voltage, while the
undercurrent fault limit is <70% of required module current; signal reset requires output voltage
recovery to within the specified ±1% regulation range and/or module current recovery to >85%
of required module current, respectively.
UNDERVOLTAGE
Y = YES; N = NO; X = DON'T CARE; * = EXCLUDED BY ANOTHER ASSUMED CONDITION
3.14.3

OVERTEMP STATUS FLAGS

This fault is generated in the event that either the input or output module heatsink temperature
rises above a safe operating level; output regulator shutdown occurs simultaneously. Recovery
occurs automatically upon reduction of internal temperatures to normal levels.
3.14.4

FANFAIL STATUS FLAGS

This fault is g
onds is incorporated to prevent nuisance indications at turn-on.
resumes.
3-10
TABLE 3-2. FAULT DETECTOR OPERATION
UNDERCURRENT
N N
Y X
N Y
* N
* Y
enerated in the event of a failure of the internal cooling fan; a delay of approximately 5 sec-
OVERVOLTAGE DCFAIL STATUS
N
*
N
Y
Y
Reset occurs when fan operation
OFF
ON
ON
ON
OFF
HSMSERIES OPR 052912