55
7.
Protections and Trouble Shooting
Built-in thermal detection circuit, once the internal temperature
exceeds a threshold value, the supply will shut down automatically.
Please switch off the supply, remove all possible causes and then
leave the supply cooling down to a normal working temperature
(approximate 10 minutes – 1 hour) before repower on again
When AC voltage is too low, SHP-10K will enter protection mode to
prevent damaging itself. The supply will restore automatically when
AC voltage is back to a normal range.
When there is short circuit at output of SHP-10K, the supply will
enter protection mode and shut down. Repower on to restore after
short-circuit condition is resolved.
When the fan is locked or damaged,
SHP-10K will enter a protection
mode to shut down its output Repower on to restore after fan-fail
.
condition is resolved.
7.1
Protections
7.1.1
Over Temperature Protection (OTP) and T Alarm
7.1.2 AC Fail
7
4
.1.
Short Circuit Protection
7
3
.1. FAN FAIL
T-ALARM to GND-AUX TTL
AC-OK to GND-AUX TTL
FAN FAIL to GND-AUX TTL
Condition
Condition
Condition
LOW
(3.5~5.5V)
LOW
(- .5~ .5V)
0
0
LOW
(- .5~ .5V)
0
0
Normal Temp.
Fan working normal
AC voltage normal
(
)
≧335±1 .5%Vac
HIGH
(-0.5~0.5V)
HIGH
( .5~ .5V)
3
5
HIGH
( .5~ .5V)
3
5
Abnormal temp.
Fan abnormal
AC voltage too low
(
)
≦320±1 .5%Vac
7
56
7 2
.
Trouble Shooting
Failure Stage
No output
vol age
t
Possible Cause
Remote OFF
Suggested Solution
Make sure Remote ON-OFF
is connected to 5V-AUX
If you are unable to clarify the problem you are facing, please contact
MEAN WELL or any of our distributors for repair service.
When the load current exceeds 110%±5 % of the rated current,
protection mode will be triggered. Repower on to restore after
overcurrent condition is resolved.
When the output voltage is too high, the over-voltage protection
circuit will be triggered. Repower on to restore after over-voltage
condition is resolved.
7
5
.1.
Over Load Protection
7
6
.1.
Over Voltage Protection
7
