6 Others
6.1 Output Current Monitor
¡
You can monitor an output current by measuring a voltage be-
tween the terminal CM and COM.
¡
Fig.6.1 shows the relationship between the voltage of the terminal
CM and the output current.
The output current shown in Fig.6.1 should be used only as a
guide.
Voltage of CM terminal
0
3
[V]
100
Load factor
Load factor :
Output current
Rated current
[%]
Fig.6.1 Load current conversion graph
¡
Please note the followings when measuring the voltage of the ter-
minal CM.
-
Wire carefully to avoid malfunction caused by noise.
-
Use a measuring instrument whose input impedance is 500k
W
or more.
-
Do not short-circuit between CM terminal and COM terminal.
Doing so could cause a failure.
6.2 Isolation
¡
When you run a Hi-Pot test as receiving inspection, gradually in-
crease the voltage to start. When you shut down, decrease the
voltage gradually by using a dial. Please avoid a Hi-Pot tester
with a timer because, when the timer is turned ON or OFF, it may
generate a voltage a few times higher than the applied voltage.
¡
When you test a unit for isolation between the input and output,
input and the terminal FG or between the output and the terminal
FG, short-circuit between the output and all function terminals.
6.3 Auxiliary Power (AUX)
¡
Auxiliary power(AUX : 12V0.1A) is possible for remote ON/OFF
and its attached circuit from CN3.
¡
AUX circuit(AUX,AUXG) is isolated from input ,output,FG,and
function terminals other than RC1.
¡
Please do not take out the current which exceeds 0.1A from AUX
to avoid the breakdown of the power supply or malfunction.
When you connect a DC-DC converter, a current a few times
higher than normal current may flow at start-up. Please check the
current.
¡
Output voltage can be varied (5V to 12V).
Please contact us for more details
¡
The maximum capacitance of the extermal capacitor is 22µF.
6.4 Variable Speed Fan
¡
The power supply has built-in variable speed cooling fan. The fan
speed is a function of load and ambient temperature.
6.5 Medical Isolation Grade
¡
PCA series fit 2MOPP
1MOPP
Safety GND
primary secondary
2MOPP
Fig.6.2 Medical Isolation Grade
AC-DC Power Supplies Enclosed Type
Instruction Manual
PCA-16
