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
