User manual ELK PRODUCTS ELK-MM443

[. . . ] ELK-MM443 Magic Module Automation Controller Features · · · · · · · · · · · · · · · · · Re-Programmable Logic Controller Four (4) supervised inputs with analog or digital sensing. Four (4) dry contact SPDT relay outputs. Two relay outputs may be jumper programmed for transistor open collector outputs. RS-485 four-wire data bus for networking to other Magic Modules, accessories, and personal computer. [. . . ] Four pin header connector J2 - Pin 3 is Data "A" and pin 2 is Data "B". Four analog or digital inputs with programmable low and high level switching thresholds accepting input voltages directly up to 13. 6 volts DC are available at terminals 5 thru 10. Higher voltages can be used by using resistors on the input as a voltage divider. Each input is jumper programmable for a 2K ohm input resistor pulled to 12VDC, ground, or no resistor input voltage bias. The input loop response time may be adjusted with the set INxFilter command in 1/10-second increments from 100 milliseconds to 25. 5 seconds. Set JP1 thru JP4 jumper (according to the input), to the "1"(+12V) pull up setting. Set JP1 thru JP4 jumper (according to the input), to the "0"(GND) pull down setting. End Of Line Resistor (EOLR) at 2000 ohms with Normally Open contacts across the resistor and/or Normally Closed contacts in series with the resistor. Set JP1 thru JP4 jumper (according to the input), to the "1"(+12V) pull up setting. Remove the JP1 thru JP4 jumper (according to the input). Use the if Inx <= value to select what to do next in the program according to the input voltage level. Four form C relay outputs with contacts rated at up to 10 amps are available at screw terminals 11 thru 22. Two relay outputs are jumper programmable (JP11 for relay 3 & JP12 for relay 4) to switch the output through an open collector NPN transistor (100 ma maximum) to the COM terminal instead of through the relay for higher speed applications such as flashing LED's where the click of the relay is not desired. Connect an X-10 or Access Interface as needed. To communicate over the AC powerline connect a PL513 or PSC04 X10 module (transmit only), or a TW-523 or PSC05 X10 module (two-way) to connector J5 using a single RJ-11 four wire telephone cable. Jumper JP10 selects between the one way or two way modules. Alternatively, for Access control applications you may connect an ELK-290 Proximity/iButton Reader Interface to connector J5. The MM443 supports both Proximity Cards and Dallas iButtons. Note: X-10 and Prox/Ibutton applications cannot be used simultaneously. Connect Power from a well regulated 12VDC power source using any of four different locations on the printed circuit board. Power Input Jack, J3, (Center Pin is Positive, Barrel is Negative). RS-485 Data Bus Screw terminals 1(+12V) and 4(NEG). [. . . ] Open and closed circuit switches using a supervising EOL resistor. Any device that provides a variable voltage output from 0 up to 13 VDC. NOTE 1: For a simple open or closed circuit switch set the jumper above the input to "1". This creates a pull-up resistor bias on the input circuitry. [. . . ]