Cardinal iMDU12-S User manual

Intelligent MDU Range
This handbook applies to models:
iMDU12
-S
iMDU12
-D
Handbook
Version 1.0

Intelligent MDU Cardinal
2014 dB Broadcast Ltd ii
dB Broadcast Ltd has made every effort to ensure the accuracy of information contained within this
document which is nevertheless supplied for information purposes only and does not constitute any
form of warranty or guarantee.

Intelligent MDU Cardinal
2014 dB Broadcast Ltd iii
All trademarks acknowledged.
The information in this document is subject to change without notice.
dB Broadcast Ltd
Registered Office:
Kestrel House
Sedgeway Business Park
Witchford
Ely
Cambridgeshire
CB6 2HY
UK
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.dbbroadcast.co.uk
Registered in England No. 2709677

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Document History
Date of first publication 09/06/2014
Current issue and date 09/06/2014

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Contents
INTRODUCTION 1
MAIN FEATURES 1
Variants 3
Software and hardware control 3
INSTALLATION 4
RACK MOUNTING AND VENTILATION 4
Rear I/O 5
HARDWARE SETUP 6
GETTING STARTED 7
FRONT PANEL CONTROLS AND LEDS7
SERIAL CONTROL 7
THE WEB INTERFACE 7
CONNECTING TO A UNIT FOR THE FIRST TIME 8
Using a PC 8
Using the serial port 9
USING THE WEB INTERFACE 10
INTRODUCTION 10
STATUS INFORMATION 10
System Status 10
IP Configuration and MDU Details 13
IP CONFIGURATION 14
MDU CONFIGURATION 17
EVENT LOG 19
POWER LOG 20
APPENDIX 21
SERIAL COMMANDS 21
TROUBLE SHOOTING 22
FREQUENTLY ASKED QUESTIONS 22
ORDERING INFORMATION 24

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MODEL VARIANTS 24
OPTIONS 24
SPECIFICATION 25

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Introduction
The Cardinal range of intelligent mains distribution units provide 12 separate outputs, an
SNMP interface, email messaging, a choice of single or dual inputs, with optional external
temperature and humidity sensing in a 1RU rack.
Figure 1: Cardinal iMDU block diagram (dual input version)
The dual input version enables main and back-up power sources to be connected to a single
Cardinal unit.
Main features
•Single and dual input versions with Neutrik Powercon inlets
•12 fused IEC outputs with LED fuse failure indication
•Automatic power shedding
•Sequential power on/off (some models)
•Network interface with web configuration via web browser
•Serial interface for initial IP address configuration as well as optional
Environmental Monitoring (external temperature/humidity sensor)
•SNMP interface
•Email alerts
•Logging
•Eight GPIs (general purpose inputs)
•Over current trip
•Turn on sequentially or with all outputs on (fail safe option)
•Cable tie bar included at rear

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Dual input version
The dual input version enables main and back up power sources to be connected to a single
Cardinal unit. Switching to the back up input supply is automatic on power fail of the main
source. The changeover system allows non phase inputs to be switched up to 650V.
Automatic power shedding
If a back up power supply is selected, it may be necessary to switch off non-critical
equipment by shedding a number of iMDU outputs. Power shedding is configured for
automatic operation in the iMDU configuration page.
Sequential power on/off
All outlets are individually switched enabling sequential switching to prevent an excessive
current surge on start-up and an orderly power-down when shedding outputs. This does not
apply to fail safe models, where outputs are ON at power up.
Network interface
The dB Cardinal intelligent mains distribution unit provides fully featured web and SNMP
interfaces giving easy access to sophisticated remote control and configuration facilities.
Email/SNMP alerts
The Cardinal range can be configured to provide email and SNMP alerts for various
conditions including; loss of input mains power, blown fuses, output status changing (i.e.
relay on or off).
Power-off fault alerts
On loss of mains input capacitors sustain the microcontroller sufficiently (around 10 seconds)
to record the fault and send SNMP traps and/or emails to alert the management system of
the loss.
Logging
As well as error logging the iMDU records five days of the following:
•Peak input voltage per input
•Minimum input voltage per input
Fail safe
Fail safe ensures that all outputs are ON at power up. If the control system were to fail, all
outputs remain ON and can no longer be controlled.
Temperature and Humidity sensing
An optional remote temperature and humidity sensor can be added for environmental
monitoring at any position within the equipment bay.

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General purpose inputs
Each iMDU includes 8 general purpose inputs for connection of alarms from other
equipment. These alarms can be reported in the same way as those for the iMDU.
Thermal breaker
The front panel on-off switch acts as a thermal breaker set to operate when a load of
approximately 12A occurs.
Variants
iMDU12-S
A single input iMDU with 12 independent outputs. It can be configured to send SNMP traps
and email alarms when faults occur, including loss of input mains power and blown fuses.
The unit includes an error log to record trends on equipment failure.
iMDU12-D
A dual input iMDU with 12 independent outputs. If input 1 fails the unit automatically
connects input 2 to the 12 outputs. It can be configured to send SNMP traps and email
alarms when faults occur, including loss of input mains power and blown fuses. It includes an
error log.
IMDU12-O-H
Humidity & temperature sensor, requires cable iMDU12-O-C-3
iMDU12-O-C-3
Cable for sensor, serial screened, length 3m
Software and hardware control
The front panel provides monitoring of each output’s availability as well as both access and
monitoring of each output fuse. For full configuration and monitoring, each Cardinal unit has
its own web based configuration tool, which is accessed from its IP address.
The default IP address configured at the factory is 192.168.0.161. The first step in
configuring multiple units is to ensure that each Cardinal unit has its own unique IP address.
Refer to the Configuration and Operation chapter for further detail.

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Installation
Rack mounting and ventilation
Warning, installation instructions are for trained personnel. To avoid electric shock do
not attempt service or internal configuration unless qualified to do so. Always
disconnect all applicable mains supplies before removing any covers.
Install Cardinal iMDUs in a standard 19 inch rack as follows:
•install each unit into its own support tray to help bear the combined weight of the unit
and any cables attached to the rear tie-bar
•ensure an adequate supply of forced cool air
•before powering the unit, ensure that the protective earth terminal of the unit is
connected to the protective conductor of the mains cord
•if necessary, connect one of the earth screw terminals points to a technical earth
•connect the supplied power cord(s) to the Neutrik Powercon connectors at the rear of
the frame and to a suitable mains supply
•connect the Network interface to a PC via a LAN and optionally connect the 6 way
RJ11 serial interface to the serial port of a PC (may be required for initial configuration)
•if required connect GPI external control and monitoring using the 15 way GPIO port
•connect up to 12 mains loads to the fused IEC connectors at the rear of the frame
•ensure that no single load exceeds the current rating for a single output (normally 6A)
or for the installed fuse in that output (default 5A slow-blow) if lower
•Ensure that the inrush current for an output does not exceed 60A or permanent
damage may occur.
•ensure that the total current from all outputs does not exceed the total current
specification for the unit (12A). It is not recommended that the unit be used
continuously above 10A.
•Fit the iMDU12-O-H Temperature and Humidity sensor with Cardinal powered off.
•power the unit when ready and monitor the unit using the LEDs on the front panel and
via the unit’s web interface
Refer to factory before installing multiple units without gaps.
Refer to the Operation chapter for system and configuration settings.

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Rear I/O
Figure 2: Dual input version rear panel view – single version has right-most input only
RJII 6-way serial/ext temp port showing null modem cable wiring
Pin Signal Destination (i.e. RS232 9 pin male)
1 0V Pin 5 - GND
2 TXD Pin 2 - RX
3 RXD Pin 3 TX
4 NC
5 RC2 Use only for optional ext temp sensor
6 +5V Do not use as a supply
Use null modem wiring shown to connect to serial PC port.
RJ45 8-way Ethernet port
Pin Signal
1 TPOUT+
2 TPOUT-
3 TPIN+
4/5 NC
6 TPIN-
7/8 NC
Use a standard Ethernet cable to connect to a network.
15 way GPI port
Pin Signal Pin Signal
1 0V 9 +5V
2 GPI I/P 1 10 GPI I/P 2
3 GPI I/P 3 11 GPI I/P 4
4 GPI I/P 5 12 GPI I/P 6
5 GPI I/P 7 13 GPI I/P 8
6 GPI O/P 1A 14 GPI O/P 1B
7 GPI O/P 2A 15 GPI O/P 2B
8 Spare P19
GPI inputs may be ground or pull ups and GPI outputs may be normally closed or
normally open by internal jumper selection as described in Hardware setup on page6.

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Hardware setup
The only user configurable settings inside the unit are to select GPI inputs between active
low and active high and the GPI output contacts between normally closed and normally
open.
Since access requires that covers be removed, the warning about disconnecting all mains
inputs needs to be repeated.
To avoid electric shock do not attempt service or internal configuration unless
qualified to do so. Always disconnect all applicable mains supplies before removing
any covers.
Figure 3: The Cardinal iMDU with the top cover removed showing GPI jumper links
GPI function Jumper Comment
Inputs 1 to 4 JP15 For active high select 0V
For active low select +5V
Inputs 5 to 8 JP16 For active high select 0V
For active low select +5V
Outputs 1A and 2A JP17 GPI O/P 1A and 2A
For normally closed select NC
For normally open select NO
Outputs 1B and 2B JP18 For normally closed select NC
For normally open select NO
GPI specifications are given in the Specification chapter.

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Getting Started
Front panel controls and LEDs
The front panel allows basic supply and output availability to be monitored.
The following parameters can be monitored at a glance using the LEDs fitted.
Function LED Comment
Supply
availability Supply, Green Shows if the single input iMDE is switched on
with power connected
Active A/B, Green Shows that the indicated input is currently in
use
Available A/B, Green Shows if the indicated input of a dual input
iMDE is connected (with the unit switched on)
Network Activity, Yellow Shows data transfer
Link, Yellow Shows basic cable integrity
Fuse Fuse, Red Indicates blown fuse
Output, Green Indicates output is ON
Serial control
Serial control via the six way RJ11 is provided to allow the unit’s IP settings to be initially
configured as an alternative to using a PC. In normal use the serial port is provided to
connect an environmental (temp/humidity) monitoring sensor.
The use of the serial port from a terminal or terminal emulator to set the IP address is
covered in the section entitled, Connecting to a unit for the first time.
The web interface
Full control and configuration of a selected Cardinal unit is accomplished via its web interface
as described in Using the Web Interface.

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Connecting to a unit for the first time
The web interface for configuration and monitoring is obtained by typing a unit’s IP address
into a browser. The means that the control PC and the Cardinal units must all have IP
addresses in the same subnet range.
When a Cardinal iMDU is connected to a network for the first time, its IP address must be
changed to a unique address that matches the network it is connected to.
The iDMU can be configured to accept an IP address from a DHCP server, however
fixed addressing is normally preferred as it enables specific units to be associated
with specific addresses.
There are two ways an iMDU can be configured for network connection.
1. By changing a control PC’s IP address to that of the Cardinal unit, configuring its IP
settings and then restoring the PC’s address
2. By using a serial command to change the IP settings of the Cardinal unit
Which method is used is a matter of convenience. The first method does not require a cable
other than a LAN patch cable to be used, whereas the second method requires a null-
modem cable with an RJ11 end to be made.
Using a PC
To use a PC to change a unit’s IP address, the IP address of the iMDU must first be known.
The default IP address of new units shipped from the factory is 192.168.0.161.
If the IP address is no longer known, proceed to the serial setup method.
1. Connect a PC to the iMDU to configure via the network (or via a crossover Ethernet
cable)
2. Change the IP address of the PC to the same range as the iMDU (i.e. 192.168.0.160),
taking care not to choose an IP address that is already in use
3. Type the current iMDU address into a browser on the PC
4. When the iMDU web page opens enter the new IP address and click on submit
5. Change the PC’s IP address to match the iMDU subnet range to regain the unit’s web
page
Communication with the unit will be lost until the PC’s IP address is changed to
match the iMDU network
6. Continue configuration as required

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Using the serial port
To use the serial port a null-modem cable will be required made according to the table
for the RJII 6-way connector on page 5.
Start a terminal session using an emulator such as Hyper Terminal or Putty
Hyper Terminal
1. Use the following port settings, 19,200 Baud, 8 data bits, no parity, 1 stop bit and set flow
control to none
2. The terminal emulation is not critical, but try VT52 or VT100 if available
3. Use the following ASCII setup; Send line ends with line feeds, Echo typed characters
locally, Append line feeds to incoming line ends and Wrap lines that exceed terminal
width. Leave other settings at their default.
4. To discover or specify an IP address use the CLIENT command followed by <CR>
Putty
1. Set connection type to “serial”
2. Category, serial. Port settings. 19,200 Baud, 8 data bits, no parity, 1 stop bit and set
flow control to none
3. To discover or specify an IP address use the CLIENT command followed by <CTRL> J
A question mark turns a command into a query
•To display the current address type CLIENT? The IP address will be displayed.
•To specify IP settings type the following:
•CLIENT 192 168.0.49 (or whatever the desired IP address happens to be)
•SUBNET 255.255.255.0 (limits subnet to 256 devices)
Once the IP settings have been entered, the iMDU can be fully configured as explained in
Using the Web Interface.
Further serial commands that can be used over the serial interface are described in the
Appendix.

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Using the Web Interface
Introduction
The web interface is designed to allow users to configure and monitor selected iMDU units
over a network using a browser. All users can access status pages but password access is
required for configuration pages.
Status information
The System Status tab provides Input/Ouput iMDU status while the About tab provides read-
only details of IP configuration and iMDU unit name, location, firmware and serial number.
The System Status tab also allows control of mains output and GPI output relays.
System Status
The web interface opens with the Status tab selected to provide an at-a-glance view of the
status of the active mains input, the twelve outputs, the eight GPI inputs and the two GPI
output relays.
A valid date requires a connection to an NTP server. At first switch-on, the date may
appear with the year 1970. Check the NTP server setup if this condition persists.

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Input
Input selected – shows selected input
Input voltage - shows input voltage(s)
Output
Number – output number 1-12 (non editable field)
Name – output name (editable under MDU Config)
Switch - to operate an output relay, click on the Switch Ticon. Control is immediate and not
subject to start or stop delay
A greyed out mains output switch relay indicates it has been locked.
Output status
Output status is indicated using the following colours.
Status Indication Description
Off Off in black against a grey background indicates output is
switched off.
On On in black against a green background indicates output is
switched on.
Starting Starting in black against an orange background indicates an
initial start delay is active.
Where a start delay has been configured, it occurs during
power up and when recovering from a shed output when the
mains power is restored. When the start delay ends that
output will switch on.
Shedding Shedding in black against a red background indicates an
initial stop or power down delay is active for an output with
shedding enabled. When the stop delay ends that output will
switch off.
Shedding does not occur if the stop delay is zero.
Fuse
If a fuse blows, Failed will appear in black against a red background.
General Purpose Inputs
GPI – up to eight GPI inputs (non editable field)
Name – GPI name (editable under MDU Config)
State – open or closed

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General Purpose Outputs
Relay – GPO output relays
Name – GPO name (editable under MDU Config)
Switch - to operate a GPI output relay, click on the Switch Relay icon.
Status – Off or on
Temperature and Humidity
If the temperature and Humidity Sensor Option iMDU12-O-H is fitted, an additional menu
appears.
System Status with temperature and Humidity Sensor
Temperature Alarm Enable – When ticked, enables the temperature alarm.
Temperature lower Threshold – Set the lower temperature for alarm
Temperature lower Threshold - Set the upper temperature for alarm
Humidity Alarm Enable – When ticked, enables the Humidity alarm
Humidity lower Threshold – Set the lower humidity for alarm
Humidity lower Threshold - Set the upper humidity for alarm

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IP Configuration and MDU Details
The About tab provides additional status only information about IP configuration and unit
details. It is particularly useful for users without access to password protected configuration
screens.
The unit name and IP configuration data is read only in the About tab.

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IP Configuration
Access to configuration screens requires a user name and password. The default is ‘admin’
and ‘admin’.
DHCP
Enables or disables DHCP. A reboot is required to make the change.
MAC Address
Displays the MAC address of the iMDU. It is configured at the factory.
IP Address
The IP address currently in use. Changing the address takes effect immediately regardless
of the DHCP configuration but will be ignored at boot if DHCP is enabled.
Subnet Mask
The IP subnet mask currently in use. Changing the subnet mask takes effect immediately
regardless of the DHCP configuration but will be ignored at boot if DHCP is enabled
Default Gateway
The IP address of the default gateway used for routing. Changing the gateway address takes
effect immediately regardless of the DHCP configuration but will be ignored at boot if DHCP
is enabled