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Serial I/O Controller
Authentic Mercury MR serial Input/output (SIO) devices
represent the secondary level in Mercury’s distributed
architecture. The devices offer flexibility for our OEM
partners, ensuring they can choose the controller that best
fits their needs.
The MR52 is a dual-card reader interface panel with
on-board flexibility to connect to a wide range of security
devices. The economical MR52 is easy to install and
provides the necessary I/O for controlling two doors with
auxiliary point control and monitoring – all in a single device.
Each high-performance unit can connect two card readers,
eight general-purpose input monitor points and six control
relays to any Authentic Mercury EP series intelligent
controller.
Features
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•
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Multi-facility code and reader technology
support
AES 128 bit data encryption
Configurable auxiliary point control and
monitoring
HSPD-12/FIPS201 compliant
UL 294 recognized
•
Universal I/O device characterization
•
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Benefits
•
•
•
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Affordable flexibility
Reliably support a wide variety of sensors
and control technologies
Easy to install
Supports OSDP, Wiegand, RS-485, magnetic
stripe and keypads
www.mercury-security.com
With two-wire RS-485 connectivity, the MR52’s two reader
ports support OSDP, Wiegand, RS-485, and magnetic stripe
readers. Keypads and integrated keypad readers are also
supported. Hardware interface and card format settings are
loaded through software commands.
The MR52 is an ideal choice for a versatile and reliable
interface panel for two doors.
Application Notes
The inputs and the relays may be assigned to door-related
functions or to general purpose I/O. The inputs support
normally open, normally closed, supervised, and nonsupervised circuits. End-of-line (EOL) resistance values are
configurable, and the relays can be configured for fail-safe
or fail secure operation.
When connected to an Authentic Mercury EP intelligent
controller, the MR52 can relate the activities of selected
system devices to other devices within the system,
generating actions and allowing activities to occur
independent of the host. The MR52 can also locally process
access requests based on facility code verification, even
when disconnected from an intelligent controller. Several
facility codes may be active in each MR52.
Give your access control system wings.
Serial I/O Controller
MR52
Primary Power:
12-24 VDC +/- 10%, 550mA maximum
12Vdc @ 450mA nominal
24Vdc @ 270mA nominal
Communication:
RS–485, 2-wire, 4,000’
(twisted pair with shield, Belden 9841)
Reader Ports:
2 Reader Ports
Power:
12 Vdc regulated, 125mA each reader
Data Card/Keypad Clock/Data, Data–1/
Data–0, or RS-485
Keypad:
8-bit Mercury, 8-bit Dorado, 4-bit HID
LED:
One-wire bi-color LED support, or twowire
Buzzer:
Only with ‘one-wire’ LED
Inputs:
8 General purpose: Programmable circuit type
2 Dedicated:
Tamper and Power Monitor
Outputs:
6 Relays: Form–C, 5 Amp 28 Vdc
Dimensions:
6.0’ W x 8.0’ L x 1.0’ H,
(152mm W x 203mm L x 25mm H)
Temperature:
0—70 °C operational, -55—85 °C storage
Humidity:
0 to 95% RHNC
Standards:
UL 294 recognized
CE compliant
RoHS
Network Switch
To Mercury OEM Host
CAT5/CAT 6
MR51e
1
2
3
4
Door 1
EP1502
9
2
10
3
11
4
12
5
13
6
14
NC
K2
7
15
NO
K4
8
16
C
NO
3
4
5
6
7
8
9
10 11 12 13 14 15
16
NC
C
K9
K1
NO OUT 9
TB5
TB1
NC
NO
NC
C
OUT 2
OUT 3
NC
OUT 4
NO
C
NO OUT 10
K10
K11
K3
NC
K12
C
NO OUT 11
NC
C
NO
K14
NC
C
C
NC
NO OUT 13
TB7
TB3
BA
OUT 5
K13
K6
NO
BA
NO
NC
C
K15
K7
K1
C
NC
J5
NO OUT 14
NO
8 7 6 5 4 3 2 1
NC
K8
C
NO OUT 115
TB8
NO
NC
K16
NC
OUT 7
TB4
C
U1
C
C
NC
OUT 8
NO OUT 16
J6
A
CT
GND
J1
S1
U1
1
2
3
4
5
6
7
8
J2
J3
TB10
J3
VIN
2W
4W
J1, J2
RS-485
TERM
J8
TB11
J4
12 34 567 8
R+
GND
CT
BA
TR+
TR-
R-
B
J7
J4
J2
TR-
TR+
VO
GND
TB1
DAT
D0
TB4
GND
4W
RS-485
BZR
BA
GND
K2
2W
LED
B
K1
J5
TB9
GND
A
DAT
D1
OUT 12
C
K5
NC
CT
OUT 6
J6
2
C
OUT 1
TB6
TB2
MR50
1
1
TB2
I1
VIN
C
I1
GND
I2
NC
C
NO
NO
TB3
MR52
K2
1
2
3
4
K2
NC
K1
I2
RS485
MR16IN
Door 1
MR16OUT
Door 2
Door 1
Door 2
Door 1
The Authentic Mercury open platform delivers quality assurance derived from the most proven and
reliable hardware in the industry. Driven by our engineering excellence and technology leadership.
Authentic Mercury hardware is designed as an access control platform that easily encompasses
emerging technologies, changing industry standards and evolving system environments.
Make yours Authentic, Make sure its Merc.