AMETEK ReFlex - Manual (Page 175)

Fixed Power DC Power Supply ReFlex Power™
5-6 M380056-01 Rev J
R EMOTE S ENSE C APABILITY
Remote sense shall compensate for at least 0.25V per load line leg. Maximum rated
output power must not be exceeded at module output terminals. The sense lines can
be opened during operation without damaging the module or the load; module will
continue to maintain output, but with reduced accuracy to 5%. Misconnection of the
sense leads must be prevented. Excessive load line voltage drop will result in
shutdown of the output.
P OWER O N S EQUENCE
The module when commanded to turn on shall sequence the 4 voltage outputs such
that the +/- 15VDC turn on together and first, followed +5VDC and then the –5VDC.
The +5VDC shall not turn on until the +15VDC and -15VDC have reached at least 50%
of their nominal output level.
P OWER O FF S EQUENCE
The module when commanded to turn off shall sequence the 4 output voltage outputs
such that the –5VDC turns off first followed by the +5VDC and +/-15VDC turned off
last. The +/-15VDC shall not be turned off until the +5VDC output has reached 0.5
VDC or less. The turn off sequence requires reasonable balance in loads and load
energy storage.
5.3.3 S
UPERVISORY
C
HARACTERISTICS
O VERVOLTAGE (OVP)
Overvoltage protection is typically 125% of nominal output voltage
O VERCURRENT
Output current is allowed to at least 125% of the full scale current. Short circuit
protection is provided for each output voltage.
O VERTEMPERATURE
Overtemperature protection is implemented with protection monitors that sense
excessive internal heatsink operating temperature, and shut down the power
converter. The maximum internal converter temperature is typically 120 °C.