Keri Systems MR51e User Manual
www.mercury-security.com
2355 MIRA MAR AVE. LONG BEACH, CA 90815-1755, (562)986-9105 FAX (562) 986-9205
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
MR51e Reader Interface
234 1
S1
S2
123456
ON
J3J7
K1
K2
12V
J5
PoE
J6
TB1 TB2 TB3 TB4 TB5 TB6
11 1 1 1 1
IN1 IN2 IN3 IN4 VO LED BZR CLK DATGND VO GNDDATCLKBZRLED GNDVIN NO NC2-CNONC1-C
J2
0.2 [5.08] 2.35 [59.69]
0.15 [3.81]
2.55 [64.77] 2.55 [64.77]
5.4 [137.16]
STATUS LEDs
2.75 [69.85]
DIP SWITCH
RESET SWITCH
PoE/12Vdc
POWER SELECTOR
JUMPER
ETHERNET RJ45
CONNECTOR
ACTIVITY
(YELLOW)
LINK
(GRREN)
Ø0.125 [Ø3.18]
4 PLACES
1 2 3 4 5 6
VO
VO
IN2
IN1
IN3
IN4
LED
BZR
CLK
DAT
GND
LED
BZR
CLK
DAT
NC
GNDGND
VIN
NO
RLY 1
NO
RLY 2
NC
C
C
TB6
TB5
TB4
TB3
TB2
TB1
J1
6V
5V
3.3V
LNK
ACT
(K1)
(K2)
J4
D24
D19
ETHERNET
STATUS
LEDs
RELAY K1
LED
RELAY K2
LED
STATUS LEDs
SOLDER SIDE
Installation and Specifications
1. General:
The MR51e reader interface provides a network connected, single door with paired reader, PoE based
solution to the OEM integrator for interfacing TTL/Wiegand/RS-485 type readers to door hardware. The
on-board twisted pair Ethernet jack with PoE support enables easy installation.
Note: For UL, the Power Sourcing Equipment (PSE) such as a PoE enabled network switch and/or PoE
power injectors must be UL Listed under UL294.
One physical barrier can be controlled with the MR51e, using single or paired readers. The first reader
port can accommodate a read head that utilizes Wiegand, magnetic stripe, or 2-wire RS-485 electrical
signaling standards, one or two wire LED controls, and buzzer control (one wire LED mode only).
The second reader port can accommodate a read head that utilizes Wiegand or magnetic stripe
signaling, one or two wire LED controls, and buzzer control (one wire LED mode only). Two Form-C
relay outputs may be used for door strike control or alarm signaling. The relay contacts are rated at 5 A
@ 30 Vac/dc, dry contact configuration. Four inputs are provided for monitoring the door contacts, exit
push buttons, and alarm contacts. The MR51e requires power from PoE or local 12 Vdc. The MR51e
may be mounted in a 3-gang switch box; a mounting plate is supplied with the unit. The MR51e may be
mounted in an enclosure; the supplied mounting plate has mounting holes that match the MR50
mounting footprint.
2. MR51e Hardware:
Mercury Security © 2013 MR51e DOC 10107-0035 REV 1.05 Page 1
MR-51E CONNECTIONS
TB1-1
IN1
Input 1
TB1-2
IN1
TB1-3
IN2
Input 2
TB1-4
IN2 TB2-1
IN3
Input 3
TB2-2
IN3
TB2-3
IN4
Input 4
TB2-4
IN4 TB3-1
VO
Reader 1 Power Output – 12 VDC
TB3-2
LED
Reader 1 LED Output
TB3-3
BZR
Reader 1 Buzzer Output
TB3-4
CLK
Reader 1 CLK/Data 1/TR+
TB3-5
DAT
Reader 1 DAT/Data 0/TR-
TB3-6
GND
Reader 1 Ground
TB4-1
LED
Reader 2 LED Output
TB4-2
BZR
Reader 2 Buzzer Output
TB4-3
CLK
Reader 2 CLK/Data 1 Input
TB4-4
DAT
Reader 2 DAT/Data 0 Input
TB5-1
VO
Auxiliary Power Output – 12 Vdc
TB5-2
GND
Auxiliary Power Output Ground
TB5-3
VIN
Input Power – 12 Vdc (from local power supply)
TB5-4
GND
Input Power Ground
TB6-1
NO
Relay K1 – Normally Open Contact
TB6-2
1-C
Relay K1 – Common Contact
TB6-3
NC
Relay K1 – Normally Closed Contact
TB6-4
NO
Relay K2 – Normally Open Contact
TB6-5
2-C
Relay K2 – Common Contact
TB6-6
NC
Relay K2 – Normally Closed Contact
JUMPER
SET AT
DESCRIPTION
J1
N/A
Factory Use Only
J2
N/A
Factory Use Only
J3
N/A
Factory Use Only
J4
N/A
Factory Use Only
J5
PoE
MR-51E powered from the Ethernet connection
12V
MR-51E powered from an external 12 Vdc power
source connected to TB5-3 (VIN), TB5-4 (GND)
J6
N/A
Ethernet Connection with POE support
J7
N/A
Factory Use Only
MR51e Terminal Blocks and Jumpers/Jacks:
Jumpers:
Mercury Security © 2013 MR51e DOC 10107-0035 REV 1.05 Page 2
4 3 2 1 Addressing Mode Meaning
OFF
OFF
OFF
OFF
MSC-Specific DHCP (original method)
OFF
OFF
OFF
ON
Public DHCP
OFF
OFF
ON
OFF
Static IP
OFF
OFF
ON
ON
Programming Mode for Static IP Address Assignment
ON
ON
ON
ON
MSC-Specific DHCP (original method)
MR-10/20 READER
ADDRESS 0
MR-DT
RS-485 MODE
9600 BAUD
TB3
TB3
FIRST READER PORT
DATA1/DATA0 OR CLOCK/DATA
FIRST READER PORT
2-WIRE RS-485
WHT (3)
BLK (6)
GRN (2)
ORG (5)
BRN (4)
RED (1)
CLK/D1
GND
DAT/D0
LED
BZR
VO
12Vdc (RED) (1)
TR+ (BLUE) (3)
GROUND (BLACK) (2)
TR- (GRAY) (4)
DAT/D0
CLK/D1
GND
VO
1
1
TB4 TB5
SECOND READER PORT
DATA1/DATA0 OR CLOCK/DATA
WHT (3)
RED (1)
GRN (2)
ORG (5)
BRN (4)
BLK (6)
CLK/D1
GND
VO
DAT/D0
LED
BZR
1 1
MR-10/20 READER
3. DIP Switches:
The addressing mode used is determined by the DIP switch setting on the MR51e:
Notes:
Public DHCP and Static IP Addressing Modes are available with MR51e firmware
revisions 1_4_2 and later
All other DIP switch settings are reserved for future use
Press S2 to reset board after DIP switch is changed for new address mode
4. Input Power:
The MR51e is powered by one of two ways (jumper selected):
Power is supplied via the Ethernet connection using PoE, fully compliant to IEEE 802.3af
Or local 12 Vdc power supply, TB5-3 (VIN), TB5-4 (GND).
5. Communication Wiring:
Communication between the EP controller and the MR51e is Ethernet. (10Base-T/100Base-TX)
6. Reader Wiring:
The first reader port supports Wiegand, magnetic stripe, and 2-wire RS-485 electrical interfaces. The
second reader port supports Wiegand and magnetic stripe electrical interfaces. Power to the first reader
is 12 Vdc and is current limited to 150 mA. The second reader may be powered from the auxiliary power
output on TB5-1 and TB5-2. Readers that require different voltage or have high current requirements
should be powered separately. Refer to the reader manufacture specifications for cabling requirements.
In the 2-wire LED mode, the Buzzer output is used to drive the second LED. Reader port configuration
is set via the host software.
When powering any remote device(s) by the MR51e, care must be taken not to exceed the maximum
current available. Cable gauge must also be evaluated. See specifications section for details.
Mercury Security © 2013 MR51e DOC 10107-0035 REV 1.05 Page 3
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