Mercury Security EP4502 User manual

Mercury Security © 2015 EP4502 DOC 10107-0039 REV 1.02 Page 1
www.mercury-security.com
2355 MIRA MAR AVE. LONG BEACH, CA 90815-1755, [phone] FAX [phone]
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.
EP4502 Intelligent Controller
with Two Reader Interface
Installation and Specifications:
1. General
The EP4502 intelligent controller provides decision making, event reporting, and database storage for the
Mercury hardware platform. Two reader interfaces provide control for two doors.
The EP4502 communicates with the host via on-board 10Base T/100Base-TX Ethernet port.
Two physical barriers can be controlled with the EP4502. Each reader port can accommodate a read-
head that utilizes Wiegand, magnetic stripe, or 2-wire RS-485 electrical signaling standards and also
provides tri-stated LED control, and buzzer control (one wire LED mode only). Four Form-C relay outputs
may be used for strike control or alarm signaling. The relay contacts are rated at 5 A @ 30 Vdc, dry
contact configuration. Eight inputs are provided for monitoring the door contacts, exit push buttons and
alarm contacts. The EP4502 requires 12 to 24 Vdc for power.
2. EP4502 Hardware:
2.00 [50.80] 3.00 [76.20] 2.00 [50.80]
8.00 [203.20]
5.50 [139.70]
6.00 [152.40]
Ø0.156 [Ø3.962]
8 PLACES
RESET
2341
S1
ON
J1
J11
3.3V
J9 J5
8V
5V
S2
IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8
K 1 K 2 K 3 K 4
12345
67
BAT
BT1
3V
BR/CR2330
BASE 2-DOOR
USB HOST
ETHERNET
J12
PASS
J7
12V
DAT
D0
CLK
D1
BZR
LED
VO
TB8
GND
DAT
D0
CLK
D1
BZR
LED
VO
TB9
GND
TB1
GND
FLT
GND
VIN
GND
TMP
NO
C
NC
NO
C
NC
OUT1 OUT2
C
NC
NO
C
NC
OUT3 OUT4
NO
READER 1 READER 2
TB10 TB11
+
TR+ TR- GND TB2 TR+ TR- GND TB3
microSD
J10
IN3 IN4 TB4 IN1 IN2 TB5 TB6 IN5 IN6 TB7 IN7 IN8
RS485 -1 RS485 -2
J2
BATTERY: BR/CR2330
REPLACE ANNUALLY
INPUT
STATUS
LEDs
OUTPUT
STATUS
LEDs
DIP SWITCHES
RESET SWITCH
STATUS
LEDs
RESET
PROCESSOR
RESET SWITCH
CHASSIS
GROUND
PROCESSOR
STATUS LED
0.25 [6.35]
S1
0.50 [12.70]

Mercury Security © 2015 EP4502 DOC 10107-0039 REV 1.02 Page 2
3. EP4502 Wiring and Setup:
CONNECTION
CONNECTION
TB8
Reader 1
GND: Ground
TB1
Cabinet
GND
DAT/D0: Data/Data 0/TR-
Tamper Input
TMP
CLK/D1: Clock/Data 1/TR+
Power Fault
GND
BZR: Reader Buzzer
Input
FLT
LED: Reader LED
Power Input
GND
VO: Reader Power
VIN: 12 to 24 Vdc
TB9
Reader 2
GND: Ground
TB2
SIO Port 1
TR+ (B) (2-wire RS-485)
DAT/D0: Data/Data 0/TR- (A)
TR- (A) (2-wire RS-485)
CLK/D1: Clock/Data 1/TR+ (B)
GND (2-wire RS-485)
BZR: Reader Buzzer
TB3
SIO Port 2
TR+ (B) (2-wire RS-485)
LED: Reader LED
TR- (A) (2-wire RS-485)
VO: Reader Power
GND (2-wire RS-485)
TB10
Out 1
NO: Normally Open Contact
TB4
Input 1
IN1
C: Common
IN1
NC: Normally Closed Contact
Input 2
IN2
Out 2
NO: Normally Open Contact
IN2
C: Common
TB5
Input 3
IN3
NC: Normally Closed Contact
IN3
TB11
Out 3
NO: Normally Open Contact
Input 4
IN4
C: Common
IN4
NC: Normally Closed Contact
TB6
Input 5
IN5
Out 4
NO: Normally Open Contact
IN5
C: Common
Input 6
IN6
NC: Normally Closed Contact
IN6
TB7
Input 7
IN7
IN7
Input 8
IN8
IN8
Jumpers:
The EP4502 processor hardware interface is configured using jumpers to setup the port interface and end
of line termination.
JUMPERS
SET AT
DESCRIPTION
J1
N/A
Factory Use Only
J2
N/A
10 Base-T/100Base-Tx Ethernet Connection (Port 0)
J5
OFF
Port 2 RS-485 EOL Terminator is Off
ON
Port 2 RS-485 EOL Terminator is On
J7
Reader Power Select. See Note 1
12V
12 Vdc at Reader Ports
PASS
VIN "Pass Through" to Reader Ports
J8
N/A
Processor connection to Base Board
J9
OFF
Port 1 RS-485 EOL Terminator is Off
ON
Port 1 RS-485 EOL Terminator is On
J10
N/A
MicroSD –Not supported
J11
N/A
Factory Use Only
J12
N/A
USB –Not supported
JP3
On
On processor board. Factory Use Only –Must be installed
Note 1: The input power (VIN) must be 20 Vdc minimum if the 12 Vdc selection is to be used.

Mercury Security © 2015 EP4502 DOC 10107-0039 REV 1.02 Page 3
DIP Switches:
The four switches on S1 DIP switch configure the operating mode of the EP4502 processor.
DIP switches are read on power-up except where noted. Pressing reset switch S2 or the processor reset
switch S1 (on the processor board) causes the EP4502 to reboot.
1
2
3
4
Definitions
OFF
OFF
OFF
OFF
Normal operating mode.
ON
OFF
OFF
OFF
After initialization, enable default User Name (admin) and Password
(password). The switch is read on the fly, no need to re-boot.
See IT Security section for additional information
OFF
ON
OFF
OFF
Use factory default communication parameters.
ON
ON
OFF
OFF
Use OEM default communication parameters. Contact system
manufacture for details. See Bulk Erase below.
ON
ON
OFF
OFF
Bulk Erase prompt mode at power up. See Bulk Erase below.
All other switch settings are unassigned and are reserved for future use.
In the factory or OEM default modes, downloaded configuration/database is not saved to flash memory.
Factory Default Communication Parameters:
Network: static IP address: 192.168.0.251
Communication address: 0
Primary Host port: IP server, no encryption, port 3001.
4. The bulk erase function can be used for the following purposes:
Erase all configuration and cardholder database (sanitize board).
Update OEM default parameters after OEM code has been changed.
Recover from database corruption causing EP4502 board to continuously reboot.
If clearing the memory does not correct the initialization problem, contact technical support.
Bulk Erase Steps: Do not remove power during steps 1-8.
1. Set S1 DIP switches to: 1 & 2 "ON", 3 & 4 "OFF".
2. Apply power to the EP4502 board.
3. Watch for LEDs 1 & 2 and 3 & 4 to alternately flash at a 0.5 second rate.
4. Within 10 seconds of powering up, change switches 1 or 2 to "OFF". If these switches are not
changed, the EP4502 board will power up using the OEM default communication parameters.
5. LED 2 will flash indicating that the configuration memory is being erased.
6. Full memory erase takes up to 60 seconds.
7. When complete, only LEDs 1 & 4 will flash for 8 seconds.
8. The EP4502 Board will reboot 8 seconds after LEDs 1 & 4 stop flashing (no LEDs are on during this
time).
5. Input Power, Cabinet Tamper and UPS Fault Input Wiring:
The EP4502 requires 12-24 Vdc power. Locate power source as close to the unit
as possible. Connect power with minimum of 18 AWG wire. Connect the GND
signal to earth ground in ONE LOCATION within the system! Multiple earth
ground connections may cause ground loop problems and is not advised.
Observe POLARITY on 12-24 Vdc input!
There are two dedicated inputs for cabinet tamper and UPS fault monitoring.
Normal (safe) condition is a closed contact. If these inputs are not used, install a
jumper wire.
12 TO 24Vdc VIN
+
-
CABINET
TAMPER
POWER
FAULT
TB1
TMP
GND
FLT
GND
GND

Mercury Security © 2015 EP4502 DOC 10107-0039 REV 1.02 Page 4
6. Communication Wiring:
The EP4502 controller communicates to the host via the on-board 10-BaseT/100Base-TX Ethernet
interface (port 0).
The serial I/O device communication ports, TB2 for port 1 and TB3 for port 2, are 2-wire RS-485 interface
which can be used to connect additional I/O panels. The interface allows multi-drop communication on a
single bus of up to 4,000 feet (1,219 m). Use. 1-twisted pair with drain wire and shield, 120 ohm
impedance, 24 AWG, 4,000 ft. (1,219 m) maximum for communication
IMPORTANT NOTE! Install the termination jumper ONLY on the panel at each end of the RS-485
bus. Failure to do so will compromise the proper operation of the communication channel!
7. Reader Wiring:
Each reader port supports Wiegand, magnetic stripe, and 2-wire RS-485 electrical interfaces. Power
to the reader is selectable: 12 Vdc (VIN must be greater than 20 Vdc), or power is passed-through
(PASS) from the input voltage of the EP4502 (TB1-VIN) and is current limited to 180 mA for each
reader port. 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 in used to drive the second LED. Reader port configuration is
set via the host software.
Data1/Data0 - Clock/Data
Reader
2-wire RS-485
Device
TR-
TR+
GND
TB3
TR-
TR+
GND
TB2
Port 1 To Serial I/O Devices Port 2 To Serial I/O Devices
GND
DAT/D0
CLK/D1
BZR
LED
VO
TB8 OR TB9
POWER
TR+ (B)
TR- (A)
GND GND
DAT/D0
CLK/D1
VO
TB8 OR TB9
GND
DAT/D0
CLK/D1
BUZZER
LED
POWER

Mercury Security © 2015 EP4502 DOC 10107-0039 REV 1.02 Page 5
8. Input Circuit Wiring:
There are 8 inputs that are typically used to monitor door position, request to exit or alarm contacts. Input
circuits can be configured as:
Unsupervised alarm (2 states); reporting as open or closed contact.
Supervised alarm (6 states); reporting as open or closed contact, open circuit, shorted circuit, grounded
circuit *, or foreign voltage*.
A supervised input circuit requires adding two resistors with value of 1k ohm, 1% to the circuit to facilitate
proper reporting and should be located as close to the sensor as possible. Custom end of line (EOL)
resistances may be configured via the host software.
* Grounded and foreign voltage states are not a requirement of UL 294 and therefore not verified by UL.
The input circuit wiring configurations shown are supported but may not be typical.
9. Relay Circuit Wiring:
Four relays with Form-C contacts are provided for controlling door lock mechanisms or alarm signaling.
The relay contacts are rated at 5 A @ 30 Vdc, dry contact configuration. Each relay has a Common pole
(C), a Normally Open pole (NO) and a Normally Closed pole (NC). When you are controlling the delivery
of power to the door strike, the Normally Open and Common poles are used. When momentarily
removing power to unlock the door, as with a mag lock, the Normally Closed and Common poles are
used. Check with local building codes for proper egress door installation.
Door lock mechanisms can generate feedback to the relay circuit that can cause damage and premature
failure of the relay. For this reason, it is recommended that a diode be used to protect the relay. Wire
should be of sufficient gauge to avoid voltage loss.
1K,1%
1K,1%
1K,1%
1K,1%
Standard Supervised Circuit,
Normally Closed Contact
Standard Supervised Circuit,
Normally Open Contact
Unsupervised Circuit,
Normally Open Contact
Unsupervised Circuit,
Normally Closed Contact
Terminal Blocks
TB4 Through TB7
Diode Selection:
Diode current rating: 1x strike current
Diode breakdown voltage: 4x strike voltage
For 12 Vdc or 24 Vdc strike, diode 1N4002
(100V/1A) typical.

Mercury Security © 2015 EP4502 DOC 10107-0039 REV 1.02 Page 6
10.Memory and Real Time Clock Backup Battery:
The static RAM and the real time clock are backed up by a lithium battery when input power is removed.
This battery should be replaced annually. If data in the static RAM is determined to be corrupt after
power up, all data, including flash memory, is considered invalid and is erased All configuration data
must be re-downloaded. Remove the insulator from the battery holder after installation. Battery type:
BR2325, BR2330, or CR2330.
11.IT Security:
When installing the EP4502, it is important to ensure that it done in a secure manner.
Upon installation, the user accounts to the web configuration page should be created with secure
passwords, and that all DIP switches are in the off position for the normal operating mode. The EP4502
is shipped from the factory with a default login account, which is enabled when DIP 1 is moved from OFF
to ON. The default login user name and password will be available for five minutes once enabled.
Therefore, it is important that at least one user account is defined, and the DIP switches are set to OFF
before the EP4502 is commissioned. It is also highly recommended not to configure the EP4502 with an
IP address that is accessible from the public Internet.
To further enhance network security, options are available to disable SNMP, Zeroconf discovery, as well
as the web configuration module itself. Additionally, data encryption can also be enabled over the host
communication port.
12.Status LEDs:
Power-up: All LED's OFF.
Initialization: LED's 1, 2, 3, 4, 5, 6, 7, IN1, IN2, IN3, IN4, IN5, IN6, IN7 and IN8 are flashed once at the
beginning of initialization. LED 4 is turned ON for approximately 1 second after the hardware initialization
has completed, then the application code is initialized. The amount of time the application takes to
initialize depends on the size of the database, about 3 seconds without a card database. Each 10,000
cards will add about 3 seconds to the application initialization. When LED's 1, 2, 3 and 4 flash at the
same time, data is being read from or written to flash memory, do not cycle power when in this state.
Running: After initialization is complete, the LEDs have the following meanings:
LED
DESCRIPTION
1
Off-Line / On-Line and Battery Status
Off-Line = 20% ON, On-Line = 80% ON
Double Flash if Battery is Low
2
Host Communication Activity (Ethernet)
3
Internal SIO Communication Activity
4
External SIO Communication Activity (Port 1)
5
External SIO Communication Activity (Port 2)
6
Reader 1: Clock/Data or D1/D0 Mode = Flashes when Data is Received, Either
Input. RS-485 Mode = Flashes when Transmitting Data
7
Reader 2: Clock/Data or D1/D0 Mode = Flashes when Data is Received, Either
Input. RS-485 Mode = Flashes when Transmitting Data
YEL
Ethernet Speed: OFF = 10Mb/S, ON = 100Mb/S
GRN
OFF = No Link, ON = Good Link, Flashing = Ethernet Activity

Mercury Security © 2015 EP4502 DOC 10107-0039 REV 1.02 Page 7
LED
DESCRIPTION
IN1
Input IN1 Status: OFF = Inactive, ON = Active, Flash = Trouble. See Note 1.
IN2
Input IN2 Status: OFF = Inactive, ON = Active, Flash = Trouble. See Note 1.
IN3
Input IN3 Status: OFF = Inactive, ON = Active, Flash = Trouble. See Note 1.
IN4
Input IN4 Status: OFF = Inactive, ON = Active, Flash = Trouble. See Note 1.
IN5
Input IN5 Status: OFF = Inactive, ON = Active, Flash = Trouble. See Note 1.
IN6
Input IN6 Status: OFF = Inactive, ON = Active, Flash = Trouble. See Note 1.
IN7
Input IN7 Status: OFF = Inactive, ON = Active, Flash = Trouble. See Note 1.
IN8
Input IN8 Status: OFF = Inactive, ON = Active, Flash = Trouble. See Note 1.
K1
Relay K1: ON = Energized
K2
Relay K2: ON = Energized
K3
Relay K3: ON = Energized
K4
Relay K4: ON = Energized
Note 1: If this input is defined, every three seconds the LED is pulsed to its opposite state for 0.1
seconds, otherwise, the LED is off.
13.Specifications:
The EP4502 is for use in low voltage, Class 2 Circuits only
The installation of this device must comply with all local fire and electrical codes
Primary Power: 12 to 24 Vdc ± 10 %, 500 mA maximum (reader current not included)
Memory and Clock
Backup Battery: 3 Volt Lithium, type BR2325, BR2330 or CR2330
Host Communication: Ethernet: 10Base T/100Base-TX
SIO Communication Two each, 2-wire RS-485, 2,400 to 115,200 bps, asynchronous, half-duplex,
1 start bit, 8 data bits, and 1 stop bit
Inputs: Two dedicated for tamper and UPS fault monitoring
Eight for door position monitoring, request to exit or alarm contacts
Relays: Four each: Form-C, 5 A @ 30 Vdc, resistive
Reader Interface:
Reader Power: 12 Vdc ± 10 % regulated, current limited to 180 mA for each reader
(jumper selectable) or
12 to 24 Vdc ± 10% (input voltage passed through) current limited to 180 mA
for each reader
Data Inputs: TTL compatible inputs, magnetic stripe and Wiegand standards supported.
Maximum cable length: 500 ft. (152 m)
RS-485 Mode: 9,600 to 38,400 bps, asynchronous, half-duplex, 1 start bit, 8 data bits, and 1
stop bit. Maximum cable length: 2000 ft. (609.6 m)
LED Output: TTL levels, high>3 V, Low<0.5 V, 5 mA source/sink maximum
Buzzer Output: TTL levels, high>3 V, Low<0.5 V, Low=Active, 5 mA source/sink maximum

Mercury Security © 2015 EP4502 DOC 10107-0039 REV 1.02 Page 8
Cable requirements:
Power and Relays: 1 twisted pair, 18 to 16 AWG
Ethernet: CAT-5, minimum
TTL Reader: 22 to 16 AWG, depending on length and requirements
RS-485:
(I/O Device Ports): 1 twisted pair with drain wire and shield, 120 ohm impedance, 24 AWG,
4,000 ft. (1,219 m) maximum
(Reader Port): 1 twisted pair with drain wire and shield, 120 ohm impedance, 24 AWG,
2,000 ft. (609.6 m) maximum
Alarm Input: 1 twisted pair, 30 ohms maximum, typically 22 AWG @ 1000 ft. (304.8 m)
Environmental:
Temperature: Storage -55 to +85 °C
Operating 0 to +70 °C
Humidity: 5 to 95 % RHNC
Mechanical:
Dimension: W 8.0 in. (203.2 mm)
L 6.0 in. (152.4 mm)
H 0.78 in. (20 mm)
Weight: 10.65 oz. (302 g) nominal
Warranty
Mercury Security warrants the product is free from defects in material and workmanship under
normal use and service with proper maintenance for one year from the date of factory shipment.
Mercury Security assumes no responsibility for products damaged by improper handling or
installation. This warranty is limited to the repair or replacement of the defective unit.
There are no expressed warranties other than set forth herein. Mercury Security does not make, nor
intends, nor does it authorize any agent or representative to make any other warranties, or implied
warranties, and expressly excludes and disclaims all implied warranties of merchantability or fitness
for a particular purpose.
Returns must be accompanied by a Return Material Authorization (RMA) number obtained from
customer service, and prepaid postage and insurance.
Liability
The Interface should only be used to control exits from areas where an alternative method for exit is
available. This product is not intended for, nor is rated for operation in life-critical control
applications. Mercury Security is not liable under any circumstances for loss or damage caused by
or partially caused by the misapplication or malfunction of the product. Mercury Security's liability
does not extend beyond the purchase price of the product.