King gates OVO550 Instructions And Warnings For Installation And Use

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King gates OVO550 Instructions And Warnings For Installation And Use Manual pdf 17 page image

16EN4243If two pairs of photocells are used which could interfere with eachother, activate the synchronisation mechanism as described in thephotocell instructions.7.3.3 - Electric lockThe factory setting of the "phototest" output is with the "Phototest"function enabled.Alternatively, the output can be programmed on the OVO control unitto control an electric lock. On start-up of each opening manoeuvre,the output is activated for 2 seconds; in this way an electric lock de-vice can be connected. The output is not activated during the closingmanoeuvre and therefore the electric lock must have a provision formechanical reactivation.The output cannot control the electric lock directly (only loads of24Vac – 2W). The output must be interfaced with a relay, as shownin fig. 44.447.4 - Special functions7.4.1 - "Always open" functionThe "Always open" function is a control unit feature which enablesthe user to control an opening manoeuvre when the "Step-by-step"command lasts longer than 3 seconds. This is useful for connectinga timer contact to the "Step-by-step" input in order to keep the dooropen for a certain length of time, for example.This feature is valid whatever the "Step-by-step" input programmingmay be (see the "Step-by-step" properties in table 12).7.5 - Connection of other devicesIf the user needs to power external devices, it is possible to tap pow-er as shown in fig. 45. The power supply voltage is 24Vac -30% ÷+50% with a maximum available current of 100mA.45