PMC-A
41
4
Bas
ic O
p
er
at
io
n
3.
W
hile holding down the LIMIT switch, set the
req
u
ired c
u
rrent
u
sing the CURRE
N
T knob.
4.
T
u
rn on the OUTPUT switch.
If the load is connected, C.C LED lights indicating that the power
supply is in the constant current operation.
•
If the output voltage exceeds the voltage limit that was
specified in step 2 due to load fluctuations when the
power supply is operating in constant current mode, the
power supply switches to constant voltage mode. When
the power supply switches to constant voltage mode, C.V
LED lights up.
4.4
Protection Function
The PMC-A is equipped with the following protection function.
4.4.1
Overvoltage Protection (OVP) Function
The overvoltage protection (OVP) function protects the load
from unexpected and excessive voltage. When overvoltage pro-
tection (OVP) is activated, the ALM LED blinks, and the OUT-
PUT is turned off.
The overvoltage protection (OVP) can be set at the range
between approximately 5 % to 105 % of the rated output volt-
age.
Setup procedure of the OVP trip point
• To set the OVP trip point, an overvoltage m
u
st act
u
-
ally be o
u
tp
u
t. If a load is connected to the o
u
tp
u
t
terminal, remove it.
1.
Using a flat-blade screwdriver, t
u
rn the O.V.P vari-
able resistor clockwise all the way.
CAUTION
