2.8 Remote ON/OFF
¡
These models have a remote ON/OFF function.
¡
You can operate the remote ON/OFF function by sending signals
to CN1/CN2. Please see Table 2.2 and Table 2.3 for specifica-
tions and Fig.2.3 for connecting examples.
¡
Please note the following when using the remote ON/OFF func-
tion.
1
The output stops when a current flows to RC.
2
The current flown to RC is a 20mA max.
3
When the output voltage is turned off through the remote ON/OFF
circuit, the built-in fan slows down.
4
If the output voltage is turned off through the remote ON/OFF
circuit, the WRN signals and the PG signals keep ”Low”.
5
Description in this section is based on the assumption that you
will use one unit alone. If you are planning to use the units
in parallel operation or use multiple units for a single system,
please check necessary voltage and current values.
¡
Please wire carefully. If done incorrectly, the internal components
of the unit may be damaged.
¡
Remote ON/OFF circuits (RC and RCG) are isolated from input,
output, FG, AUX, WRN and PG.
Table 2.2 Specifications of remote ON/OFF (RC-RCG)
Output voltage
Between RC and RCG
ON
L level (0 to 0.5V) or open
OFF
H level (4.5 to 12.5V)
Table 2.3 Specifications of remote ON/OFF (Case of Fig.2.3)
Connection method
Fig.2.3 (a)
Fig.2.3 (b)
Fig.2.3 (c)
Power ON
SW open
(0.1mA max)
SW close
(0.5V max)
Power OFF
SW close
(3mA min)
SW open
(0.1mA max)
Base pin
RCG
AUXG
RCG, AUXG
Ri=780
W
Ri=780
W
Ri=780
W
RCG
RC
RC
RC
AUX
AUX
AUX
RCG
AUXG
AUXG
RCG
AUXG
SW
SW
SW
Rb=1k
W
Vcc
Ra
*
1
(a)
(b)
(c)
12V
typ
12V
typ
12V
typ
Fig.2.3 Examples of connecting remote ON/OFF circuit
*
1 If the output of an external power supply is within the range of
4.5 - 12.5V, you do not need a current limiting resistor Ra. If
the output exceeds 12.5V, however, please connect the current
limiting resistor Ra.
To calculate a current limiting resistance value, please use the
following equation.
Ra[
W
]=
Vcc-(1.1+Ri
X
0.005)
0.005
2.9 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.
2.10 Signal Output (LED/Warning/Alarm)
¡
Functions of LED indicators and Output of Warning/Alarm are
shown below. LED indicators and Output of Warning/Alarm are
signals to check the presence/absence of voltage at the output
terminal of a power supply and to detect warning/fault conditions.
The timing of signals might be vary depending on input and load
conditions. Please evaluate thoroughly.
Table 2.4 Description of LED indicator
LED indicator
Condition
Output voltage
OFF
Input power not present
OFF
Green - ON
Normal condition
ON
Green - Blinking DC OFF by RC signal
OFF
Amber - Blinking
Warning condition
(refer to Table.2.5)
ON
Amber - ON
Fault condition
(refer to Table.2.6)
OFF
Table 2.5 Description of the Warnings (WRN signal)
Warning
Output of Warning
WRN
The WRN signals are ”Low”
when the power supply oper-
ates normally.
The signals turn ”High” when
AC input voltage is over
AC456V three phase four
wire system* or AC input
voltage is out of specifica-
tion or DC output voltage is
wrong(DC output voltage is
out of voltage adjustment
range.) or fan alarm/thermal
warning is detected.
Open collector method
Good : L level
(0 to 0.5V at 10mA)
Bad : H level or Open
(35Vmax)
*
This does not affect product quality. The current flowing through
the neutral line (N phase) increases when AC input voltage is
over AC456V three phase four wire (18Amax). Select a suitable
wire gauge for the neutral line.
AC-DC Power Supplies Enclosed Type
Instruction Manual
FETA-10