Huawei PAC2000S12-B1 PSU Technical Manual page 38

PAC2000S12-B1 PSU
Symbol Description
T4 Delay time for OPOK# to take effect (from the
time when MV6/MV12 increases to 90% to
when OPOK# becomes high level)
T5 IPOK# failure delay time (from input power
failure to IPOK# being at low level, not
including circuit breaker power failure)
T6 Output hold-up time (from input power failure
during normal running to 11 V output, 80%
load, DIP feature)
T7 OPOK# hold-up time: time from AC power
failure to when OPOK# becomes low level (80%
load)
Time from when the AC power fails to when
OPOK# becomes low level (40% load)
Time from when the AC power fails to when
OPOK# becomes low level (25% load)
Time from when the AC power fails to when
OPOK# becomes low level (12.5% load)
T8 Time from when OPOK# falls to 1.43 V to when
the 12 V bus voltage drops to 9.5 V
T9 Output hold-up time (from low IPOK# to when
the output drops to 5.7 V after input power
failure during normal running. When the output
voltage is lower than 9.2 V, the output power is
15 W. T6 is considered and power failure logs
are recorded.)
T10 Delay when the PSON# signal switches from
MV6 to MV12 (from low level to 11.4 V output)
The MV6 output overcurrent protection or
MV12 output overtemperature protection fault
is rectified, and the MV6 output voltage
increases to 11 V.
T11 Time for MV12 to decrease to MV6; 24 W loads
connected
Technical Manual
9 Control Functions
Minimum Maximum
Value Value
50 100
/ 4
10 /
10 /
20 /
30 /
40 /
200 /
300 /
80 200
2.1 3.3
80 200
33
Unit
ms
ms
ms
ms
ms
ms
ms
µs
ms
ms
s
ms