Fuse Rating - TDK-Lambda Genesys GEN8-300 User Manual

SYMPTOM
Output is present momentarily
but shuts off quickly. the display
indicates "OUP".
Output voltage will not adjust.
Front panel CC LED is on.
Output voltage will not adjust.
Front panel CV LED is on.
Output current will not adjust.
Front panel CV LED is on.
Large ripple present in output.
No output. Display indicates
"OUP"
No output. Front panel ALARM
LED is blinking.
Poor Load regulation
Front panel CV LED is on.
The front panel controls are
nonfunctional.

9.7 FUSE RATING

There are no user replaceable fuses in the power supply. Internal fuses are sized for fault
protection and if a fuse was opened it would indicate that service is required. Fuse replacement
should be made by qualified technical personnel. Refer to Table 9-2 for a listing of the fuses.
Table 9-2: Internal fuses
Fuse designation
F301, F302 :
INPUT FUSE
30A, 250VAC, Fast-Acting
CHECK
Is the power supply
configured to Remote
sense?
Is the unit in constant current
mode?
Check if output voltage is
adjusted above OVP setting
or below UVL setting.
Is the unit in constant voltage
mode?
Is the power supply in remote
sense?
Is the voltage drop on the
load wire high?
Over Voltage Protection
circuit is tripped.
Display indicates "ENA"
Display indicates "SO"
Display indicates "O7P"
Display indicates "Fb"
Are sensing wires
connected properly?
Is the power supply in
Local-Lockout mode?
1-Phase, 190-240Vac
Check if the positive or
negative load wire is loose.
Check current limit setting
and load current.
Set OVP or UVL so they
will not limit the output.
Check current limit and
voltage setting.
Check load and sense
wires connection for noise
and impedance effects.
Minimize the drop on the
load wires.
Turn off the AC power
switch. Check load
connections. If analog
programming is used,
check if the OVP is set
lower than the output.
Check rear panel J1
ENABLE connection.
Setup switch SW1 setting.
Check rear panel J1
Output Shut-Off connection.
Check if air intake or
exhaust are blocked.
Check if the unit is
installed adjacent to heat
generating equipment.
Check Foldback setting
and load current.
Connect the sense wires
according to User's
manual instructions.
Turn Off the AC power
and wait until the display
turns off. Turn on the AC
power and press front
panel REM/LOC button.
3-Phase, 190-240Vac
F321,F322, F323:
15A, 250VAC, Fast-Acting
67
68
REF.
ACTION
3.9.6
3.9.8
5.2.1
5.2.2
5.3
5.4
5.2
3.9.4
3.9.8
5.3
5.8
4.4
5.7
5.12
5.5
3.9.8
7.2.5