Chapter 3
Housing & markings
3.8. Specification for external Power Supply selection
The eWON2005CD™ has to be supplied by an external voltage source ranging from 12 to 24
VDC.
The power supplied must be a Class 2 or Level 3, SELV-compliant (Safety Extra Low Voltage)
and limited in current to a max of 850mA.
The safety voltage power supply is not part of the delivery.
The data given below is intended to allow correct selection of the external power supply:
Specification
Value
Secondary PS voltage
from 12 to 24 VDC +/-20% (SELV-compliant)
Max secondary PS current
850 mA max.
eWON current protection
2A by auto fuse
eWON voltage protection
30V by transil
eWON EMI filter
Common mode filter
Power absorbed
10 Watts
Input Protection
Protected against polarity inversion
Equipment Supplied by Class 2 or Level 3 Power Supply.
3.8.1. Auto-fuse
An auto fuse placed just after the power input protects the eWON devices against short
circuits. This component returns by itself to its normal state when the short circuit has
disappeared and after the component has been cooling down.
Would this fuse happen to operate, please check the device for presence of loose metal
parts inside likely to generate a short circuit.
If the problem recurs even after such a verification, then return the device to the vendor for
further investigation.
1
Properly ground the unit with the earth screw at the top of the unit. This is mandatory to
ensure the security and the electromagnetic compatibility (EMC) of the device.
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eWON 2005CD | IG 001
