Basics of Incremental Encoders with Alarm (EN)

email: sales@impulseautomation.co.uk web: www.impulseautomation.co.uk Information shown in these data sheets are for guidance purposes only, no liability is accepted for any errors or omissions. The designer or user is solely responsible for the safe and proper use of these parts, assemblies or equipment described. OUTPUT CIRCUIT TECHNICAL DATA FUNCTION Basics of Incremental Encoders Outputs - Alarm Output NPN - Open collector Output load max. 5 mA / 24 V at U = DC 5 V B 5mA / 32 V at U = DC 10- 30 V B Output level Output active (failure condition): L ≤ DC 0,7 V Output inactive: high impedance (if necessary:

get H-level by an external pull-up resistor) Malfunction indication time ≥ 20 ms The rotary encoders are equipped with an electronic monitoring system that reports potential malfunctions via a separate alarm output. The alarm output can be used for selecting an optical display (LED; for circuit, see above) or the control system (SPC or similar). Moreover, the alarm outputs of several encoders can be interconnected to a common “systems alarm” by means of a parallel connection. The following errors are indicated: Category I Category II Category III - damaged disks - overtemperature - voltage range DC 1 V Doc No: EB0004 Rev:

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