6
TDK-Lambda
GWS
500
Series
INSTRUCTION MANUAL
4-6. Low Output Detection Circuit (DCOK)
Low output voltage detection circuit is provided. DCOK signal is only valid after AC input is turn-on for more than one
sec. DCOK signal will turn “High” level to indicate abnormal status when the output voltage becomes less than
approximately 80% of rated. It uses the open collector method as shown below
4-7. Remote ON/OFF Control
Remote ON/OFF control is provided.
Using this function, output on/off is allowed to be controlled without input voltage on/off. The output is turned ON
when CNT+ and CNT- terminals are shorted, while the output is turned OFF when these terminals are opened. When
this function is not used, connect CNT+ and CNT- terminals together. The specifications for this function are as follows
(1) TTL compatible.
(2) The maximum input voltage to CNT+ terminal is 12V, and the maximum allowable reverse voltage is -1V.
(3) The source current for CNT+ terminal is 3.5mA.
(4) A switch or a relay or a transistor or a FET can be used as ON/OFF switch.
The /RL option model reverses the logic of the remote ON/OFF function.
Voltage Range between CNT+ and CNT-
Output Status
Standard type
/RL option
2.4
≤
H
≤
12.0V or Open
OFF
ON
0.0
≤
L
≤
0.8V or Short
ON
OFF
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