2
Definitions
Installation
LED 7
LED 5
LED 8
LED 6
LED 3
LED 2
LED 1
LED 9
LED 4
1
2
3
on
4
MAC:
18E80FXXXXXX
asdesaxtff
C NO NC
RL 1
C NO NC
RL 2
C NO NC
RL 3
C NO NC
RL 4
1 2 3 4
NETWORK
1 2 3 4
NETWORK
VIKING
ELECTRONICS
HUDSON, WI 54016
NETWORK ENABLED
RELAY CONTROLLER
MODEL RC-4A
©
VIKING
1
IN1 C
IN2 IN3 C
IN4
2
3
4
5
6
LOGIC LEVEL
PROGRAMMING
RESTORE DEFAULTS
DEBOUNCE
POWER 12V DC
RELAY 1
RELAY 2
RELAY 3
RELAY 4
1
2
3
4
5
7
8
9 10 11 12
6
STATUS
LED
12V DC
Adapter
(included)
Temperature Sensor
Door Sensor
Liquid Level Sensor
Light Sensor
Doorstrike
Gate
Light
Fan
Relay Examples:
Sensor Examples:
Router
PC
IMPORTANT:
Electronic devices are susceptible to lightning and power station electrical surges. It is recommended
that a surge protector be installed to protect against such surges.
Hook up the
RC-4A
as shown above. The relay outputs can be connected to devices that are controlled by contact
closures, such as doorstrikes or gates. Both normally open and normally closed terminals are provided. The sensor
terminals are to be connected to devices that indicate their state by either opening or closing a contact. Examples
would include a maximum or minimum temperature sensor or a door sensor. When all the relay and sensor
connections have been made, use a network cable to connect the network jack on the
RC-4A
to a network jack on
your LAN. Plug in power to the
RC-4A.
When
RC-4A
is powered up, it sends a request to the network server to assign it an IP address. If there are addresses
available, the server assigns one and relays this information to the
RC-4A.
From this point on, this address is used
by the
RC-4A
to communicate with the rest of the network.
Authentication - Basic:
Login credentials (username/password) are sent over the network in plain text. This option is less secure, but improves
compatibility with some browsers.
Authentication - Digest:
Login credentials are encrypted before being sent over the network. This option is more secure, but may not work with
some browsers or smartphones.
Client:
A computer or device that makes use of a server. As an example, the client might request a particular file from the server.
DHCP:
Dynamic Host Configuration Protocol. In this procedure the network server or router takes note of a client’s MAC address and assigns an
IP address to allow the client to communicate with other devices on the network.
DNS Server:
A DNS (Domain Name System) server translates domain names (ie: www.vikingelectronics.com) into an IP address.
Ethernet:
Ethernet is the most commonly used LAN technology. An ethernet Local Area Network typically uses twisted pair wires to achieve
transmission speeds up to 1Gbps.
IP Address:
This is the address that uniquely identifies a host on a network.
LAN:
Local Area Network. A LAN is a network connecting computers and other devices within an office or building.
DHCP Lease:
The amount of time a DHCP server reserves an address it has assigned. If the address isn’t used by the host for a period of time,
the lease can expire and the address can be assigned to another host.
MAC Address:
MAC stands for Media Access Control. A MAC address, also called a hardware address or physical address, is a unique address
assigned to a device at the factory. It resides in the device’s memory and is used by routers to send network traffic to the correct IP address. You
can find the MAC address of your
RC-4A
printed on a white label on the top surface of the network jack.
Router:
A device that forwards data from one network to another. In order to send information to the right location, routers look at IP Address, MAC
Address and Subnet Mask.
Server:
A computer or device that fulfills requests from a client. This could involve the server sending a particular file requested by the client.
Static IP Address:
A static IP Address has been assigned manually and is permanent until it is manually removed. It is not subject to the Lease
limitations of a Dynamic IP Address assigned by the DHCP Server.
WAN:
Wide Area Network. A WAN is a network comprising a large geographical area like a state or country. The largest WAN is the Internet.
A. Installing the RC-4
