Implementation...4CH

the scalae relay is designed for rapid implementation of new and existing systems installation options the module offers 2 recommended installation options direct mounting for a more cost effective mounting method, the module includes 4 mounting points four holes can be drilled, and aligned with the pcb stand offs are then used to mount it elevated from the mounting surface din rail a sized din rail mounting platform is available the unit is inserted into the din rail enclosure and then the assembled module is then added to a panel connections power supply the pcb may be powered by one of the following options an ac power source, the secondary side of a transformer can be used to power the pcb direction powered independently by a dc power supply, at around 5vdc, 500 ma owing to this, activating an input is easily accomplished by closing or shorting the two pins do not power the pcb directly from mains or 120vac | 220vac inputs completing the circuit to ground and the opto couplers out is powered this then drives the transistor and energizes the relay coil outputs the relay used is a single pole, double throw this enables each relay to be wired up either as normally open or normally closed the module is labeled and a circuit diagram is provided to illustrate this connection