See the wiring diagrams on pages 19 and 20.
If two or more Photo-Eyes, or any other safety devices are fitted then each switching circuit should be wired in series.
A 24-volt Photo-Eye or other accessory may be powered from the 24-volt DC accessory Radio supply terminals at the lower right hand side of the panel. The 24-volt accessory supply may be used to power other accessories such as an accessory radio receiver (non Zap). (Pic 41) The maximum current should not exceed 200mA.
Pic 41
An Over-Load circuit will trip if the accessory load current exceeds 200mA. This is indicated by the illumination of the OVER-LOAD LED. If the over- load does trip then isolate the main power for at least 20 seconds to allow the over-load circuit to reset and disconnect the excessive load.
The range of Zap Photo-Eye units has been designed for universal supply operation. They can be powered from 12 to 240 volts DC or 24 to 240 volts A/C. (Pic 42)
Pic 42
12 VOLT TWO WIRE PHOTO-EYE WIRING
A 12 volt two wire Photo-Eye may be wired to the terminals marked at the top of the panel. (Pic 43). DIP switch No. 3 should be set to the ON position. Wiring diagrams for various types of photo-eye units are shown on pages 19 and 20.
Pic 43
Each time the Safety circuit is activated LED LD2 the SAFETY ACTIVE indicator will illuminate. This is useful when testing the operation of the photo- eye or other safety device without running the door. (Pic 44)
Pic 44
In Europe it is necessary to arrange for a standard safety circuit to be monitored for both an open circuit and a short circuit in which case the circuit must include an 8.2 K resistor at the furthest point in the external circuit. DIP Switch No. 1 should be set to ON which is the position marked RES for resistive.
When the circuit is to be operated as Normally Closed then DIP switch No. 1 should be set to OFF. This position is marked N/C on the panel for Normally Closed.
