Mercury Security MR16in User Manual

Mercury Security Corporation © 2009 MR16in DOC 10107-0010 REV 2.01 Page 2
3. Communication Wiring:
The MR16in communicates to an intelligent controller (EP2500 for example) via a 2-wire RS-485
interface. The interface allows multi-drop communication on a single bus of up to 4,000 feet (1,200 m).
Shielded cable of 24AWG with characteristic impedance of 120 ohm is specified for the RS-485 interface.
The last devices on each end of the cable should have the terminator installed (set jumper J1 on).
Install the following jumpers for the RS-485 interface according to the selected configuration:
4. Alarm Inputs Wiring:
Inputs 1 to 16 may be configured to use or not use End Of Line (EOL) resistors and to use normally open
or normally closed contacts. Input CT and input BA are used for monitoring cabinet tamper and power
failure, respectively. These two inputs are for contact closure monitoring only, and do not use EOL
resistor(s).
Input configuration is set via host software.
TR+
TR-
R+
R-
GND
2W
4W
2-WIRE
TB10
(ONLY 2-WIRE RS-485 IS SUPPORTED)
NC
NO
NO
NC
1K,1%
1K,1%
1K,1%
1K,1%
TB6 TB5
I9
I9
I10
I10
I11
I11
I12
I12

Mercury Security MR16in Specifications

Power

primary power	12 to 24Vdc ±10%, 350mA maximum
12Vdc power consumption	300mA nominal
24Vdc power consumption	220mA nominal

Outputs

outputs quantity	2 outputs
output type	Form-C
output current rating	5A @ 28Vdc, resistive

Inputs

unsupervised/supervised inputs	16
standard EOL	1k/1k ohm, 1%, 1/4 watt
dedicated inputs for tamper and fault monitoring	2

Communication

communication interface	RS-485, 2-wire
communication speeds	9600, 19200, 38400, or 115200 bps
RS-485 cable requirements	24AWG, 120 ohm impedance, twisted pair with shield

Mechanical

dimensions	6" (152mm)W x 8" (203mm)L x 1" (25.4mm)H
weight	9 oz. (250 g) nominal
power cable requirements	18 AWG, 1 twisted pair

Operating Environment

storage temperature range	-55°C to +85°C
operating temperature range	0°C to +70°C
humidity tolerance	0% to 95% RHNC