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Delta Electronics. Inc.
Chapter 4: System Protection Mechanism
4.1. Input Breaker
The function of this switch is to prevent over current at input side from any malfunction
happening and simultaneously provide a manual switch for user to turn off the power supply.
4.2. Protection by MCU (A: Auto Recovery, L: Latch)
Alarm Condition
HW Fault M1
HW Fault M2
SW OVP
SW OCP
SW OPP
Arc Number Limit
Target Life Monitor
Output Interlock
Contactor Interlock
Communication Loss
Fan1 Error
Fan2 Error
Bus UVP
Bus OVP
GND Detect
Set Point Monitor
Energy Mode Monitor
Parallel Fault
Table 4.1 Definition and description of MCU protection
Code
01
Hardware error from the left module
02
Hardware error from the right module
03
Output over voltage
04
Output over current
06
Output over power
07
Arc number is over setting parameter
09
Power off while output reaches setting Energy
11
Uninstallation of output cover
12
Uninstallation of contactor pin in D-sub connector
15
Error from internal communication
17
Error from the left fan
18
Error from the right fan
20
Input voltage is under operation range
21
Input voltage is over operation range
22
Positive output is not connected to system ground
Error while output fails to reach setting parameter
23
within setting time
24
Power off while output reaches setting energy
000
Fault from other PSU (showing on Slave)
Description
HPH- 20KA01KAT
Mode
A
A
A
A
A
L
L
L
L
L
L
L
L
L
L
L
L
L
14
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