Web Controlled
DIN Relay 4
USER’S GUIDE V1.3 .9
Standard Features
Congratulations on your purchase. The DIN relay is an
industrial Ethernet controlled relay with these features:
Web Interface, Keypad and LCD
The internal web server is accessible from any standard
web browser. Enter an IP to congure and control via the
http, or use the keypad and LCD for local control.
8 SPDT Relay Outputs
Eight sets of single-pole double-throw contacts are provided.
Screw terminals are pluggable. Recommended current is
10A at 120VAC. Relays are fused at 12A. Heavy silver
plated contacts are used for durability.
Power Input
The switching power supply accepts 12-28 VDC and draws
5W maximum.
Security: Password, HTTP Port and Subnet Restriction
Password security and a changeable HTTP port help
control access. Subnet restriction limits control to your LAN.
Multiple users are supported with individual relay masking.
Sequenced “On Timer”
A programmable delay timer allows relays to be switched on
in sequence, rather than simultaneously. Many loads draw
more power when they are initially switched on. Sequencing
prevents circuit overloads when loads devices are attached
to a single circuit.
Scripting, AutoPing, and FLASH Firmware Upgrades
The Lua scripting language provides simple PLC functionality. Modify the sample scripts or write your own. Learn
more at
routers, servers and IP gear automatically. FLASH rmware
is upgradable via local hardwired Ethernet.
www.lua.org
AutoPing monitors and reboots
Mounting Rails
The DIN relay mounts on standard 35mm rail. Call us at
(408) 330-5599 if you need a piece cut to length. To mount
directly on a panel, use #6 screws on 5.8 x 3.9" centers.
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Maximum Terminal Torque
Use stranded wire only. Torque terminals to 20in-lbs max.
Important Factory Defaults
DEFAULT IP ADDRESS AND LOGIN
The factory default IP address is 192.168.0.100
User name: admin (lower case)
Password: 1234
RESET PROCEDURE
You may want to take a backup of your settings rst. To
reset to default, gently depress the reset switch with a
stylus and select a reset option.
The display displays an overview of possible actions.
Interrupt it by pressing UP/DOWN or CYCLE..
Use UP/DOWN to select a reset mode. The selected
mode is displayed on the second LCD line. Available
modes are:
• Clear lock bits
• Reset Network and Scripting
• Reset Network & Scripting, plus Enable WiFi
• Complete wipe: - All settings will be lost
• Complete wipe + Enable WiFi!
Note: The last two 'wipe' modes enable the Subnet
Restriction. ONLY MACHINES IN THE SAME SUBNET
WILL BE ABLE TO CONNECT AFTER RESET. If
connectivity is lost, you may use a local connection
such as a laptop to restore your original network
settings.
Quick Setup
Use these shortcuts for a quick installation:
1. Connect using an RJ-45 cable. Make sure the
192.168.0.100 IP is compatible with your LAN.
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2. Apply power to the relay. The LCD will illuminate.
3. Enter 192.168.0.100 in your web browser address bar.
If the login page doesn’t appear, follow the IP Setup
instructions.
4. Login using the default user name, admin (lower case).
Enter the default password, 1234
5. Use the setup page to add relay names or change the IP.
6. Important Set the recovery mode for safety after a power
failure. The recovery mode controls default relay settings
after power is restored.
7. Change the password to improve security.
Tip: An ohmmeter is handy for testing the relay before
attaching equipment.
IP Setup
If your network settings won’t access the default IP, use a
direct cable connection (temporarily bypass any switch or
router) and follow these steps to add a compatible IP such
as 192.168.0.50 Before adding an IP, close programs and
browsers. After the link is established, you can revert to
DHCP or use a combination of DHCP and static IPs.
Windows Step 1
In Windows, the rst step to changing IPs is locating the
network adapter TCP/IP properties. The procedure diers
for each version of Windows:
Windows XP, 2000, 2003: Open Start / Control Panel
/ Network Connections. If you’re using “classic view”, it’s
Start / Settings / Control Panel /Network Connections.
Right-click on Local Area Network Connection and
select Properties. Proceed to step 2.
Windows Vista: Open Start, right click on Network,
then on Properties. Double click Network and Sharing
Center, click Manage Newtork Connections. A Network
Connections window appears. Right click on the network
connection to the switch, ie. Local Area Network.
Proceed to step 2.
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Windows 7: Use the default Category View. Open
the Start orb, click on Control Panel. Click View
Network Status and Tasks, then Change Adapter
Settings. Proceed to step 2
Windows 8/10: Mouse or swipe to the bottom right
corner and select Settings. Select Control Panel.
Select Network and Sharing Center. Change Adapter
Settings. Right click on your connected network and
select Properties. Proceed to step 2
Windows Step 2
The second step is adding an IP such as 192.168.0.50.
If you are using DHCP, it’s easiest to temporarily
disable it while conguring the relay.
Select Internet Protocall TCP/IP V4 Properties and
click Properties. Enter a compatible static IP. Click
Apply and close windows. Ping the relay to conrm.
Point your browser to 192.168.0.100 Log in.
Max OS X IP Setup
Turn AirPort o temporarily. Click the Apple logo, then
System Preferences, then Network. Select Built-In
Ethernet and then Congure. Under the TCP/IP tab,
select Manually and enter an IP address such as
192.168.0.50
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Basic Operation
After initial power-up, the relay performs a sequence of selftests (POST) to ensure reliability. After self-test, a the relay
looks a DHCP server. If none is fount, the relay defaults
to the xed (static) IP address set on the setup page. This
is shown on the LCD. If enabled, script execution starts.
After POST, the relay may then be operated via the web.
To access the relay, simply enter the IP address (ie.
192.168.0.100) in the URL eld of your web browser.
Home Relay (Relay) Control Page
To access the home page, rst enter the IP address in web
browser URL eld, then log in. The home page contains links
to other pages. The rst four are static internal links:
Relay Control
Clicking “Relay Control” links to the home page used for
manually switching relays on and o. Access masking to
specic relays is determined by your login.
Settings
Clicking “Settings” links the administrator to a conguration
page. This page is used to set relay names, power on
features, network settings, user information and passwords.
Help
The Help link displays the latest online manual. Since
features are subject to change without notice, online
manuals are usually more current than printed manuals.
Logout
Logout ends the authenticated session. Login to reconnect.
Programmable Web Links
Four additional user-dened web links are provided on the
relay control page. Factory defaults are “Manual”, “FAQs”,
etc. You may change the name and destination URL for
these links on the “Setup” page. These links are convenient
for connecting to other power switches or to remote sites.
Switching Relays on and O
The relay control page lets you control any relay. The
sequence delay in which relays will be switched on is
determined by settings on the setup page.
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To switch a relay on or o, simply click to the right of
the relay name or number. Switching is immediate. You
may also “Cycle” an attached device.. This is useful for
rebooting devices which may interrupt the network link to
the relay. Clicking “Cycle” switches power o, waits a few
seconds (as specied by the sequence delay), and then
switches power back on. You may also “cycle” all relays
via the “Cycle all relays” button.
Most browsers have an internal setting for maximum
refresh rate. Depending on your web browser settings,
you may need to click the “refresh” button to update the
on-screen status display after changes.
Setup Page
These settings congure the relay. Only admin has
access.
Switch and Relay Names
Use the switch name eld to assign a Switch Name to the
power relay itself. Examples are “Machine Tool Controls”
or “Lighting Relay”. The Switch Name eld appears on the
top of the home page. Assign an identifying name to each
load, such as “Sump Pump” or “Email Server”.
Power-On Sequence Delay
When a time value is entered in the “All ON sequence
delay” eld, the power relay will pause for a period of time
before energizing each relay on in sequence. This delay
can prevent the power surges and blown circuit breakers
which can occur when multiple loads are switched on
simultaneously. A delay of 60-120 seconds is typical.
You may also enter a screen refresh delay. If “Enable
screen refresh” is checked, and a delay value is entered,
your browser should periodically update the status screen.
The maximum update rate is limited by browser settings.
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Power Loss Recovery Modes
The power loss recovery mode setting has three setting
options which take eect after every power failure:
1. You can turn all relays o (all relays stay switched o until
manually turned on later) by checking the rst box.
2. You can automatically turn all relays on using the “All ON
sequence delay” described above. Check the second
option to do this.
3. You can return to the same relay settings that were used
prior to the power loss. The “All ON sequence delay” will
also be used in this instance.
A script starting on power-up may override these settings.
User Dened Links
You may link to other power relays, your own web pages,
or remote web sites by entering up to four URLs and
descriptions in the Setup page. For example, enter “Site
Two Power Switch” in the description eld with a URL of
“192.168.0.102” These links appear in a left column.
Conrm Option Checkbox
Checking “Conrm” causes the web server to issue a
conrmation dialog box before accepting any on/o change.
Adding Users
Only the admin may add users and passwords. Each user
may control certain relays using the masking matrix. It is
possible (but not recommended) to add a user without a
password. This will allow unauthenticated access to selected
relays. Only non-admin user web pages are scaled for
mobile devices.
Network Settings
A xed IP address, network mask, gateway, and subnet
mask must be entered in this eld. To lock these settings,
click the “protect” button. This blocks changes until the
hardware reset button in the lower left corner is pressed.
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When changing IP addresses, you may need to restart
your network switch to validate the new IP on an “auto-
conguring” switch port. Be sure to record the new IP
address.l
Auto Ping Automatic Reboot
The internal AutoPing™ feature is a handy system for
rebooting IP equipment without human intervention.
AutoPing works by cycling power when a device becomes
unresponsive to IP pings. To learn more about AutoPing and
how to use it, visit: Digital-Loggers.com/AutoPing2.html
Security
Your relay employs secure challenge-response
authentication, with a new encryption token for each
transaction. This gives it fairly good out-of-the box security.
Making it more secure takes just a moment:
Changing the Password
It’s a good idea to change your password. You will be
prompted to change it from the default. Use the Setup page
to change it. Write it down in a safe place.
Restricting Subnet Access
To restrict access to only the 255 IP addresses on your LAN,
“Class C”, enable the subnet restriction on the setup page.
Changing the HTTP Port
Changing the HTTP port to a non-standard value makes
it more dicult to nd the relay. The default port is
80. For example, if you change the port to 5372, use
http://192.168.0.100:5372 to access the relay.
HTTPS
Recommended for security, but can be disabled by admin.
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Installing Inside a Firewall
Install your relay inside a rewall (using port forwarding), rather
than directly on the Internet for an additional layer of security
Power Input and Consumption
Your relay can be powered from an external DC supply as
low as 12VDC and as high as 28V. Do not exceed 28VDC.
At 33V, an SCR crowbar will shut down the relay to protect it.
Disconnect the relay, eliminate the source of high voltage and
allow the relay to cool. It will then self-reset.
The relay contacts are fully isolated (1KV hipot tested) from the
power supply.
Maximum relay power dissipation occurs at 11V DC.
Undervoltage lockout occurs at approximately 10.2V with 1.5V
hysteresis. Current drain decreases with input voltage due to
the use of a bucking regulator. The lowest power consumption
occurs at idle, approximately 2W. With all relays energized,
power consumption increases to approximately 5W. Although
the case is well ventilated, ambient air temperature should not
exceed 150F for maximum reliability. Add an external MOV
or other protection device across the power input terminals in
noisy environments.
Relay State DC Volts I (A) Power (W)
All OFF 10.3 UVLO Lockout
All OFF 11.5 0.180 Startup 2.0W
All OFF 28 0.085 2.0
All ON 12 0.41 4.90
All ON 28 0.37 4.6
All OFF 33 -- Shutdown
Ethernet Link Status
The LCD now provides Ethernet cable connection status.
LEDs are no longer present on the Ethernet connector.
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Manual Controls
Use the keypad to manually select and switch relays. Hold
a button down for 5 seconds to lock or unlock a relay, Local
keypad control may be disabled in software by the admin.
Contact Ratings and Protection
The internal T-90 Relays have the following ratings:
240VAC NO 40A NC 30A
277VAC NO 30A NC 20A
30VDC NO 20A NC 10A
250VAC NO 1HP NC 1/2HP
Relays are RU and CE approved, rated at 1 million
mechanical, 250,000 electrical operations at 50% load and
800,000 operations at 10% load. The relays are sealed.
Because the DIN case terminals are rated at 12A peak we
suggest limiting sustained current to 10A for safety margin.
Only stranded wire of appropriate gauge should be used.
Terminals should be torqued to 20 in-lbs max. It is wise to
recheck torque after completing the installation.
Heavy traces and gold plating are used to minimize internal
resistance between the terminals and relay contacts,
typically 25m Ohms, so contact power dissipation is not
normally a concern.
For maximum exibility, relay contacts are unprotected. For
high current inductive switching, consider adding an external
snubber circuit to extend contact life. Download contact
protection information from: DINRelay.com/RelayCare.pdf
Sensor Port
The sensor port is an RJ-12 jack wired for connection to
an optional DHT11 or similar compatible sensor. Pin 2 is
+5V power out, Pin 3 is the bidirectional TTL data bus. All
other pins are grounded. DLI keeps sensors in stock or you
can add your own. Under high humidity conditions, these
sensors should be replaced periodically.
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System Log & Notications
An internal system activity log is accessible from the Setup
page. The system log contains reports of all major activity
including login attempts, setting changes, relay state
changes, etc. Multiple relays and other DLI power controllers
can report to a centralized syslog server. Information on
setting that ups is at:
Digital-Loggers.com/Syslog.html
Email reports can be triggered by certain events.
Accessory Hatch
The plastic hatch on the right side of the relay can be opened
to add a WiFi antenna or to connect analog inputs. Using
a small screwdriver, press gently on the lower edge of the
hatch. Push towards the buttons The hatch will ex and pop
open.
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The antenna and/or ADC connector may be attached when
the hatch is removed. A three pin connector is provided for
ADC input. The upper pin is scaled for 0-100VDC, and the
lower pin is 0-10VDC. The center pin is a ground reference
bonded to the negative power input.
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Contrast and Reset Controls
A physical button-press can be used to enter the reset
menus. Press gently on the switch in the lower left
corner using a small stylus or pen. Adjusting the LCD
contrast isn't often necessary, but in cases of low ambient
temperature or unusual viewing angle, you may adjust it
using a small phillips screwdriver placed in the CNT hole.
Frequently Asked Questions, Spec Sheet
Check the DIN FAQ page for answers to frequently
asked questions: Digital-Loggers.com/DIN4FAQS.html
Specications for DIN Relay 4 can be found at:
Digital-Loggers.com/DIN4SPEC.pdf
Remote Control from your Application
The relay can be easily controlled from your application in
Windows or Linux. Find the recommended API at:
Digital-Loggers.com/RestAPI.pd
Learning the Lua Scripting Language
Most customers run the relay using the existing code. If
there's a custom feature you'd like to add, have a look
at the built-in Lua scripting language. Sample scripts are
included. Start with Lua.org or:
Digital-Loggers.com/Lua.html
At DLI, We Listen…
Your feedback is appreciated. Please send suggestions:
Engineering@Digital-Loggers.com We constantly work to
improve, so specications are subject to change.
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USER’S GUIDE
Limited One-Year Warranty
The terms of this warranty may be legally binding. If you do not agree
to the terms listed below, return the product immediately in original
unopened condition for a full refund. The purchaser assumes the entire
risk as to the results and performance of the unit. DLI warrants this
power relay to be free from major defects. No agency, country, or local
certications are included with this unit. It is the responsibility of the user
to obtain such certications if they are necessary. DLI’s entire liability
and exclusive remedy as to defective hardware shall be, at DLI’s option,
either (a) return of the purchase price or (b) replacement or repair of the
hardware that does not meet DLI’s quality control standards and has
been returned through proper RMA procedures. DLI’s liability for repair or
replacement is to DLI’s customer ONLY. WARRANTY SERVICE DOES
NOT COVER DAMAGE TO SCREW TERMINALS FROM EXCESSIVE
TORQUE OR DAMAGE DUE TO EXPOSURE TO WATER, MOISTURE
OR VIBRATION. DLI will not service relays which show evidence of
overloading or misuse. No warranty service will be provided without an
original invoice from DLI and an RMA number provided by technical
support. RMA material must be shipped prepaid to DLI. RMA numbers
are valid for 15 days from date of issue. This warranty does not cover
products modied, subjected to rough handling, or used in applications
for which they were not originally intended. No oral advice or verbal
warranties made by DLI’s employees, dealers, or distributors shall in
any way increase the scope of this warranty. DLI makes no warranty as
to merchantability or tness for any particular purpose. DLI assumes no
liability for incidental or consequential damages arising from the use or
inability to use this product. This warranty gives you specic legal rights.
You may ave other rights that vary from state to state. Since some states
do not allow the exclusion of liability for consequential damages, some of
the above may not apply. This relay is not designed, qualied or intended
for mobile, marine, airborne, medical or aerospace use.
DIGITAL LOGGERS, INC.
2695 Walsh Ave
Santa Clara, CA 95051
T 408.330.5599
www.DinRelay.com
support@digital-loggers.com
© 2001-2017 DLI US and Foreign Patents Pending. Release 1.3.9.0 6/21/2017
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Download a Manual
Scripting Function
Product FAQs
2695 Walsh Avenue, Santa Clara, CA 95051
Tel: (408) 330-5599 Digital-Loggers.com
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