User manual

5
TDK-Lambda
GWS 2 50 Series
INSTRUCTION MANUAL
4-6. Low Output Detection Circuit (DC_OK)
Low output voltage detection circuit is provided. DC okay (DC_OK) signal will turn “High” level to indicate abnormal
status when the output voltage becomes less than approximately 80% of rated value caused by either the drop or
brownout of the input voltage or OCP, OVP and OTP function generation. 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 standards 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 sink 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.
Output Status
Voltage Range between CNT+ and CNT-
Standard type /RL option
2.4 ≤ H ≤ 12.0V or Open OFF ON
0.0 ≤ L ≤ 0.8V or Short ON OFF
Relay, Transistor,
FET, Switch