INSTRUCTION MANUAL
CCG15
・
30
Series
TDK-Lambda
<Page>
14/23
6-7. Remote ON/OFF Control (RC terminal)
The output can be enabled/disabled by RC terminal without turning the input supply on and off.
There are two type of control logic, Negative Logic and Positive Logic. Polarity of control logic is
Determined by Product Specification.
In order to use remote ON/OFF control function,
attach transistor, relay or equivalent switch between
RC and -Vin terminal as shown in Fig.6-5.
For secondary control, isolation can be achieved through the use of a opto-coupler or equivalent as
shown in Fig.6-6.
Note) 1. When remote ON/OFF control function is not used, between RC and -Vin terminals should be
shorted on Negative Logic model. In contrast, RC and -Vin terminals should be opened on Positive
Logic model.
2. Source current from RC terminal to -Vin terminal is 1mA or lower.
3. The allowable maximum RC terminal voltage of Negative Logic model is 18V, and Positive Logic
model is 7V.
4. In case of applying external voltage into RC terminal with Positive Logic model, please contact us.
5. When using long wiring, for prevention of noise, attach capacitor between RC and -Vin terminal.
The maximum capacitance between RC and -Vin terminal is 1μF.
Fig.6-5 RC Connection (1)
Table 6-3 RC Connection
Vin
+Vin
-Vin
F1
C1
RC
Transistor, Relay
or Equivalent
Fig.6-6 RC Connection (2)
Vin
+Vin
-Vin
F1
C1
RC
Secondary
(output side)
Logic
Output Status
Negative Logic
ON
OFF
Switch
Short
Open
Positive Logic
OFF
ON
Short
Open
RC Voltage Range
0V
≦
V
RC
≦
0.5V
4V
≦
V
RC
≦
18V
0V
≦
V
RC
≦
0.5V
Open
Note4)
