Install jumpers according to the selected configuration. Use twisted pair (minimum 24 AWG) with drain wire and shield for communication. The MR52 allows for multi-drop communication on a bus of up to 4,000 feet (,200 m). Communication Wiring (SIO Communication Port): + 2 TO 24 Vdc The MR52 communicates to a Mercury Security intelligent controller (EP2500 for example) via a 2-wire RS-485 interface. Make power connection with minimum of 8 AWG wires. Locate the power source as close to the MR52 as possible. Supplying Power to the MR52: The MR52 accepts 2 to 24 Vdc for power on TB7. 25 5.50 A B TMP PFL R R2 TB8 TB J7 CLK D READER READER INTERFACE INPUTS SIO COMMUNICATION PORT, RS-485 POWER IN 2-24Vdc 8.00 2.00 3.00 2.00 TB2 TB3 TB4 TB5 TMP PFL J5, J6 TERMINATOR TB6 TR+ TR- R+ R- TB7 VIN J5 J6 J 2V J5 2 W 4W J3 RS-485 J4 PT J2 J2 J8 J9 U J0 J3 K K2 K3 K4 K5 K6 K5 K3 K K6 K4 K2 TB0 TB TB9 S DAT D0 CLK D DAT D0 NC NO C NC NO NO C NC NO C NC NO C NC NO C NC READER 2 RLY RLY 2 RLY 4 RLY 3 RLY 6 RLY 5 DIP SWITCHES RELAY STATUS s OUTPUTS Ø.56 8 PLACES TB2.50 Mercury Security 206 MR52 DOC REV 2.04 PageĢ 2. See the following figure for component location.
Communication to the controller is accomplished via a 2-wire RS-485 interface. Input circuits can be configured as unsupervised or supervised. Eight inputs are provided that may be used for monitoring the door contact, request to exit push button and alarm contacts. Six Form-C relay outputs may be used for strike control or alarm signaling. The MR52 provides a tri-state control and buzzer control. General: The MR52 reader interface provides a solution to the OEM system integrator for interfacing to TTL (D/D0, Clock/Data), F/2F, 2-wire RS-485 device, and door hardware. Operation is subject to the following two conditions: () This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. LONG BEACH, CA, (562) FAX (562) MR52 READER INTERFACE Installation and Specifications: This device complies with part 5 of the FCC Rules. 1 IN IN2 IN3 IN4 INPUTS IN5 IN6 IN7 IN8 C MIRA MAR AVE.
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