Fuse Rating - TDK-Lambda GENESYS GEN 2400W Series Technical Manual

SYMPTOM
Output Voltage will not
adjust. Front panel CV LED
is illuminated.
Output Current will not
adjust. Front panel CV LED
is illuminated.
Large voltage ripple present
across Output.
No output. Display indicates
"OUP"
No output. Front panel
ALARM LED is blinking.
Poor Load regulation.
Front panel CV LED is
illuminated.
The front panel controls are
non-functional.

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 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 internal fuses.
Fuse designation
INPUT FUSE
Table 9-1: Troubleshooting Guide (continued)
CHECK
Check if output voltage is
adjusted above OVP
setting or below UVL
setting.
Is the unit in Constant-
Voltage (CV) mode ?
Is the power supply in
remote sense ?
Is the voltage drop on the
load wire too high ?
Over-Voltage Protection
(OVP) circuit is tripped.
Display indicates "EnA"
Display indicates "SO"
Display indicates "OTP"
Display indicates "Fb"
Are sensing wires
connected properly ?
Is the power supply in
Local-Lockout mode ?
Single-Phase, 190-240VAC
F301, F302:
30A, 250VAC, Fast Acting
Table 9-2 Internal Fuses
83-517-000 Rev. A
ACTION
Set OVP or UVL so their
settings will not limit the
Output voltage.
Check Output current limit
and Output voltage setting
Check load and sense
wires connection for noise
and impedance effects.
Minimize the voltage drop
on the load wires.
Turn OFF the AC Input
power switch. Check load
connections. If J1 Analog
Programming is used,
check if the OVP is set
lower than the output.
Check rear panel J1
ENABLE connection.
SW1 DIP-switch setting.
Check rear panel J1
Output Shut-Off (SO)
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 Input
power and wait until the
display turns OFF. Turn
on the AC Input power
and press the front panel
REM/LOC button.
Three-Phase, 190-240VAC
F321, F322, F323:
15A, 250VAC, Fast-Acting
77
REF
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