TDK-Lambda GENESYS 10KW - Over Voltage Protection (OVP); Setting OVP Level

83
-
530
-
000 Rev
G
34
-
Enabled output, power supply in Constant Voltage mode: Press the PREV button and then r
o-
tate the CURRENT encode
r knob. The CURRENT meter will show the programmed cu
r
rent
limit for 5 seconds after the adjustment has been completed, and then will return to show the
actual load current.
-
Enabled output, power supply in Constant Current mode: Rotate the CURRENT encoder
knob
to adjust the current limit.
4.
Adjustment resolution can be set to Coarse or Fine adjustment. Press the FINE button to select
b
e
tween the Coarse and Fine resolution. The FINE LED turns On when the resolution is set to
FINE.
5.2.3 Automatic Crossover
If
the power supply operates in Constant Voltage mode, while the load current is increased to greater
than the current limit setting, the power supply will automatically switch to Constant Cu
r
rent mode. If
the load is decreased to less than the current limit
setting, the power supply will automatically switch
back to Constant Voltage mode.
5.3 OVER VOLTAGE PROTECTION (OVP)
The OVP circuit protects the load in the event of a remote or local programming error or a power su
p-
ply failure. The protection circuit mo
nitors the voltage at the power supply sense points and thus pr
o-
vi
d
ing the protection level at the load. Upon detection of an Over Voltage condition, the power supply
output will shut down.
5.3.1
Setting the OVP level
The OVP can be set when the power supply out
put is Enabled (On) or Disabled (Off). To set the OVP
level, press the OVP/UVL button, so that the CURRENT meter shows “OUP”. The VOLTAGE meter
shows the OVP setting level. Rotate the VOLTAGE encoder knob to adjust the OVP level. The di
s
play
will show “OUP
” and the setting value for 5 se
c
onds after the adjustment has been completed and then
will return to its previous state.
To preview the OVP setting, press the OVP/UVL pushbu
t
ton so that the CURRENT display will show
“OUP”. At this time, the VOLTAGE displa
y will show the OVP setting. A
f
ter 5 seconds, the display will
return to its previous state.
5.3.2
Activated OVP protection indications
When the OVP is activated the power supply output shuts down. The VOLTAGE display shows “OUP”
and the ALARM LED blinks.
5.3.3
Resett
ing the OVP circuit
To reset the OVP circuit after it activates:
1.
Reduce the power supply Output Voltage setting below the OVP set level.
2.
Ensure that the load and the sense wiring are connected properly.
3.
There are four methods to reset the OVP circuit.
Pres
s OUT button.
Turn the power supply Off using the AC On/Off switch, wait until the front panel display
turns Off, then turn the power supply On using the AC On/Off switch.
Turn the power supply output Off and then On using the SO control (refer to sect.5.7
). In
this method the power supply should be set to Auto
-
Restart mode.
Send OUT command via the RS232/485 communication port.