Hardware description
Chapter 2.
2.5 Mounting and environmental conditions
The eWON COSY unit has an IP30 protection grade. It is therefore not suited for outdoor
mounting. The design of the unit is such that it has to be integrated in an enclosed electrical
cabinet, protected from excessive heat humidity and dust.
The eWON COSY complies to the CE-marking requirements regarding electromagnetic
compatibility (EMC) within an industrial environment. The normal mounting position is wall
mounted on Omega type DIN-rail (EN 50022). The unit is suited to work in any other position.
Grounding the eWON is necessary to eliminate unwanted transients (lightning protection) and to
conform to the EMC requirements. Therefore, a ground screw is available at the top of the unit.
Connect this screw directly to a low impedance ground.
The equipment will operate properly provided it remains within specified environmental limits (see
§ 5 General characteristics of eWON COSY)
2.6 External power supply characteristics
The eWON COSY has to be powered by an external voltage source. The power supply used
should be a Class III, SELV-compliant. The safety voltage power supply is not part of the delivery.
Characteristic Value
Power supply voltage External 12-24 VDC +/- 20%
Current limited to an absolute max. of 850 mA.
Power consumption 10W max.
Internal current protection 2A by auto fuse (*)
Internal voltage protection 30V by transil
2-pin PS connector
Polarity
Female mating connector
included in delivery
ref: MSTB 2,5/2-STF-5.08
(*) This component normally returns to its normal state by itself after cooling down. Would this
fuse happen to operate, please check the device for presence of loose metal parts inside. If the
problem recurs even after such a verification, then you should return the device to the vendor for
further investigation.
eWON COSY 141 - Installation Guide (How to) Page 6/20
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