Technical Reference Note
Remote On/Off
Rev.12.08.17_#1.1
ERM 10W Series
Page 54
Positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin, and off during a logic
low. To turn the power module on and off, the user must supply a switch to control the voltage between the on/off terminal
and the -Vin terminal. The switch can be an open collector or equivalent. A logic low is 0V to 1.2V. A logic high is 3.5V to
12V. The maximum sink current at the on/off terminal (Pin 3) during a logic low is -100μA.
Table 7. Remote On/Off Control:
Parameter
Condition
Min
Typ
Max
Unit
Converter On
3.5V ~ 12V or Open Circuit
0V ~ 1.2V or Short Circuit
Converter Off
Control Input Current (on)
Control Input Current (off)
Control Common
Standby Input Current
Vctrl = 5.0V
Vctrl = 0V
---
---
0.5
---
---
mA
mA
-0.5
Referenced to Negative Input
--- 2.5
Nominal Vin
---
mA
The positive logic remote ON/OFF control circuit is included. Turns the module ON during logic High on the ON/Off pin and
turns OFF during logic Low. The ON/OFF input signal (Von/off) that referenced to GND. If not using the remote on/off
feature, please open circuit between on/off pin and -Vin pin to turn the module on.
+Vin
+Vin
POWER
POWER
MODULE
MODULE
Vcc
TTL
lo
ON/OFF
OPTOISOLATOR
lo
ON/OFF
+
Von/off
+
SYSTEM
Von/off
ON/OFF
-Vin
CONTROL
-Vin
Isolated-Closure Remote ON/OFF
Level Control Using TTL Output
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