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PAC3000S12-T1 PSU
1. Unlatch mode of output overvoltage protection (the PSU unlatches if any of the following requirements is
met): Input is recovered after AC power has failed for 2s; the INSTALLED signal changes from low level to
high level; the PSON12V changes from high level to low level; the PSU shuts down due to overvoltage; the IP
PRESENT signal changes from low level to high level twice within 30s. When PSUs are working in parallel, if
one of the PSUs triggers overvoltage protection and AC input is recovered after an AC power failure, the PSU
can unlatch within 2s.
2. Unlatch mode of the MV12 output overcurrent/short circuit protection (the PSU unlatches if any of the
following requirements is met): Input is recovered after AC power has failed for 2s; the INSTALLED signal
changes from low level to high level; the PSON12V changes from high level to low level; the PSU shuts down
due to overvoltage; the IP PRESENT signal changes from low level to high level twice within 30s. When PSUs
are working in parallel, if one of the PSUs triggers overcurrent protection and AC input is recovered after an
AC power failure, the PSU can unlatch within 2s.
3. Unlatch mode of the SV12 output overcurrent/short circuit protection (the PSU unlatches if any of the
following requirements is met): Input is recovered after AC power has failed for 2s; the INSTALLED signal
changes from low level to high level; when overcurrent occurs in SV12 mode but the PSU is not shut down,
the IP PRESENT signal changes from low level to high level once.
4. Unlatch mode of the MV6 output overcurrent/short circuit protection (the PSU unlatches if any of the
following requirements is met): Input is recovered after AC power has failed for 2s; the INSTALLED signal
changes from low level to high level; the PSON12V changes from high level to low level.
5. When the system needs to be unlatched, change the PSON12V signal to high level for more than 500 ms
and then change the PSON12V signal to low level to ensure that the PSU can be unlatched reliably (mains
overvoltage/overcurrent).
6. When the system needs to be unlatched, change the IP PRESENT signal to low level for more than 500 ms
and then change the IP PRESENT signal to high level to ensure that the PSU can be unlatched reliably
(overvoltage/overcurrent in SV12 mode).
7. When PSUs are working in parallel, if one of the PSUs triggers overvoltage or overcurrent protection and AC
input is recovered after an AC power failure, the PSU can unlatch within 2s.
8. If the PSU enters protection state, MCU and I2C can work properly.
9. When the PSU triggers overload protection, there are no requirements on the output regulated voltage
precision.
10. If the PSU changes from MV12 mode to MV6 mode, before the output voltage drops to 9 V, loads in MV12
mode are all disconnected and the PSU carries only the loads in MV6 mode.
2.6 Detection Precision
Parameter
Input power detection
precision
Technical Manual
Minimum
Typical
-
60
–15
-
2 Electrical Specifications
Maximum
Unit
Notes & Conditions
-
W
T
A
230 V AC, V
DC; P
15
W
T
A
230 V AC, V
DC; 60 W< P
19
= 25℃ to 35°C, V
=
in
= 270 V
in
≤ 60 W
in
= 25℃ to 35°C, V
=
in
= 270 V
in
< 300 W
in
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