INSTRUCTION MANUAL
PFE500F
Series
TDK-Lambda
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10. ON/OFF Control (+ON/OFF, -ON/OFF terminal)
This module is equipped with ON/OFF control function.
Without turning the input supply on and off, the output
can be enabled and disabled using this function.
The ON/OFF control circuit is isolated from input circuit of the power supply by photo-coupler.
Fig. 10-1 and Fig. 10-2 is connection example of ON/OFF control.
When the ON/OFF control is not used, short
+ON/OFF to AUX and -ON/OFF to COM terminals respectively.
Select the external voltage and external resistance, as the ON/OFF terminals current is shown below.
15/21
ON
-ON/OFF
+ON/OFF
AUX
COM
External
voltage
4.7k
OFF
R
11V
Fig. 10-1 ON/OFF Control Connection Example 1(ON/OFF Control by External Voltage)
2.5mA (+/-0.5mA)
ON/OFF terminal current
ON
Output Voltage
Less than 0.15mA
OFF
Table 10-1 Recommended ON/OFF Terminal Current
- ON / OFF
+ ON / OFF
AUX
COM
4.7k
ON
OFF
11 V
Fig. 10-2 ON/OFF Control Connection Example 2 (ON/OFF Control by Built-in AUX)
- ON / OFF
+ ON /OFF
AUX
COM
4 .7 k
11V
Fig. 10-3 ON/OFF Control Connection Example 3 (ON/OFF Control is not used)
