Title: +038=360.000-OU045T_04-PCD2.m4160 PLS SBC - IO Manual.pdf
e r 42A3 coTerminals1A3 noPin 12 in frontControl elementsEach channel has a toggle switch with three settings Manual on, Auto, Manual off. There are 2 LEDs fitted per channel: The upper LED is two-colour and displays the operating mode for the channel: amber = Manual; green = Automatic The lower LED displays the switch state of the relay: Red = relay activated.Example (above):Output 0:Manual off Relay offLED 1 = amber LED 2 = offOutput 1:Manual on Relay onLED 1 = amber LED 2 = redOutput 2:Automatic Relay offLED 1 = green LED 2 = offOutput 3:Automatic Relay onLED 1 = green LED 2 = redIf there is no external supply to the relay coils, the LED does not light up and the relays are not activated. There is no error message to the Saia PCD® where the electrical supply is not present.6-44PCD3.A810Block diagramA0 nc A0 noU RA0 coCPLDSwitchPCD3 I/O BusA3 noU RA3 coSwitch+UextGNDFilterUREEPROMPower Supply 3V3Addressing