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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 provide flexibility to our OEM
partners, ensuring they can choose the controller that best
fits their needs.
The MR50 is an economical single card reader interface
panel dedicated to individual door oversight and provides
of all the I/O needed for controlling a single door. Each
MR50 connects one card reader, two general-purpose input
monitor points and two control relays for access control
and security monitoring through an Authentic Mercury EP
intelligent controller.
The panel is easy to install and supports Wiegand, clock
and data, magnetic stripe, F2F, Supervised F2F, OSDP,
keypad and biometrics reader technologies. With its
compact footprint and RS-485 connectivity, the MR50 can
be clustered or distributed depending on the installation
environment.
Features
•
•
•
•
•
Multi-facility code and reader technology
support
AES 128 bit data encryption
HSPD-12/FIPS201 Compliant
UL 294 Recognized
Universal I/O device characterization
Benefits
•
•
•
•
Easily connects to Mercury’s intelligent
controllers
Provides all I/O needed for single door
control
Small footprint for versatility
Supports Wiegand, clock and data, magnetic
stripe, F2F, Supervised F2F, OSDP, keypad
and biometrics reader technologies
www.mercury-security.com
An ideal choice for a compact and economical single-card
reader panel, the high-performance MR50 is a versatile,
reliable interface for an individual door.
Application Notes
The inputs and the relays can 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 failsafe or fail secure operation.
Hardware interface and card format settings are loaded
through software commands.
When connected to a Mercury EP intelligent controller, the
MR50 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
MR50 can also locally process access requests based
on facility code verification, even disconnected from an
intelligent controller. Up to eight facility codes may be
active in each MR50.
Give your access control system wings.
Serial I/O Controller
MR50
Electrical:
Primary Power: 12-24 Vdc +/- 10%,
150mA maximum
12Vdc @ 110mA nominal
24Vdc @ 60mA nominal
Inputs:
2 General purpose:
1 Dedicated:
Communication: RS–485, 2-wire, 4,000’
(twisted pair with shield, Belden 9841)
Reader Port:
1
Power: Input voltage pass- through
Data Card/Keypad Clock/Data, Data–1/
Data–0, or RS-485
LED:
One-wire, or two-wire bi-color LED support
Buzzer:
Only with ‘one-wire’ LED
programmable circuit type
Tamper
Output Relays:
Relay 1: Form–C, 5 Amp 30 Vdc
Relay 2: Form–C, 1 Amp 30 Vdc
Dimensions:
2.75” L x 4.25” W x 1.0” H,
(70mm L x 108mm W x 25.4mm H)
Temperature:
-40—75 °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
10
3
11
4
12
5
13
6
14
NC
K2
7
15
NO
K4
8
16
C
NO
2
3
4
5
6
C
7
8
9
10 11 12 13 14 15
NC
C
NO OUT 9
TB5
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
NO
K14
NC
C
C
NC
NO OUT 13
TB7
TB3
BA
OUT 5
K13
K6
NO
BA
NO
K15
K7
K1
NC
C
J5
OUT 6 NC
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
J1
R+
VIN
S1
U1
1
2
3
4
5
6
7
8
J2
J1, J2
RS-485
TERM
J8
J4
J2
GND
2W
4W
J3
TB10
R-
CT
BA
TR+
TR-
GND
B
J7
TB11
J3
12 34 567 8
J4
GND
TB1
TR-
TR+
VO
DAT
D0
TB4
4W
GND
K2
RS-485
BZR
BA
GND
2W
LED
B
K1
J5
TB9
GND
A
DAT
D1
OUT 12
C
K5
NC
CT
C
J6
16
K9
K1
TB1
NC
OUT 1
TB6
TB2
9
2
TB2
I1
I1
C
VIN
GND
I2
NC
NC
C
NO
TB3
MR50
1
1
C
K2
1
2
3
4
MR52
K2
NO
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.