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PAC2000S12-B1 PSU
9.8 IPOK LINK#
The IPOK LINK# signal is delivered by the system to the PSU, which indicates that the system has at
least one PSU present with normal input.
Table 9-11 IPOK LINK# signal characteristics
Signal Characteristics
Signal type: Output signal from the
PSU
IPOK LINK# = High
IPOK LINK# = Low
Table 9-12 IPOK LINK# output
IPOK LINK# Output
Low level voltage
High level voltage
Source current, IPOK LINK# = Low
Source current, IPOK LINK# = High
Signal rise and fall time
9.9 CYC_PWR#
The CYC_PWR# signal is used by the system to make the PSU shut down or restore MV12 output.
●
The signal is valid if the CYC_PWR# signal is at low level for 100–150 ms. The PSU is shut down
after the delay time (configurable), and then starts after the restart time (configurable).
●
The CYC_PWR# signal is valid after the OPOK# signal becomes high level.
●
The CYC_PWR# signal is invalid if both the OPOK# and CYC_PWR# signals are low level.
●
The signal is invalid if the CYC_PWR# signal is at low level for less than 100 ms.
●
The CYC_PWR# signal is invalid when a PSU is during delay shutdown or restarting.
Technical Manual
PSU side: This signal is pulled up to 3.3 V auxiliary power
supply inside the PSU by a 2.49-kilohm resistor.
System side: This signal is output by CPLD over the drive
circuit and pulled up to 3.3 V by a 4.7-kilohm resistor.
The input of the standby PSU is normal.
The input of the standby PSU is abnormal.
Min.
0 V
2.200 V
-
-
-
9 Control Functions
Max.
0.6 V
3.465 V
4 mA
4 mA
200 μs
39
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