Procon
MelcoREMOTE
MelcoREMOTE2G
FOR INSTALLERS
INSTALLATION AND OPERATION MANUAL
Version 1.0.0
For safe and correct use, please read this installation manual thoroughly before installing the MelcoREMOTE.
MITSUBISHI ELECTRIC UK
Page 2 of 52
Page 3 of 52
Preface
Safety warnings
Caution:
Do not expose to rain or moisture.
Screened Signal Cables:
Use only screened cables for connecting peripherals to any Procon MelcoREMOTE device to reduce the possibility of
interference with radio communications services. Using screened cables ensures that you maintain the appropriate
EMC classification for the intended environment.
CE Notice:
This product has been determined to be in compliance with 2004/108/EC (EMC Directive) and amendments of the
European Union.
European Union, Class A:
Class A products are intended for use in non-residential/non-domestic environments. Class A products may also be
utilised in residential/domestic environments but may cause interference and require the user to take adequate
corrective measures.
This is a Class A product. In a domestic environment this product may cause radio frequency interference in which
case the user may be required to take adequate measures.
A “Declaration of Conformity” in accordance with the preceding directives and standards has been made and is
available on request.
If this equipment does cause interference with radio communications services, which can be determined by turning the
equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures:
Reorient the receiving antenna.
Relocate the Procon MelcoREMOTE with respect to the receiver.
Move the Procon MelcoREMOTE away from the receiver.
If necessary, consult a Procon MelcoREMOTE technical support representative or an experienced radio/television or
EMC technician for additional suggestions.
Disclaimer
Warranty:
All products manufactured on behalf of Mitsubishi Electric UK are warranted against defective materials for a period of
three years from the date of delivery to the original purchaser.
Warning:
Mitsubishi Electric UK assumes no liability for damages consequent to the user of this product. We reserve the right to
change this manual at any time without notice. The information furnished by us is believed to be accurate and reliable.
However, no responsibility is assumed by us for its use, nor for any infringements of patents or other rights of third
parties resulting from its use.
Page 4 of 52
Amendment Register
Version
Latest Firmware
Version
Date Author Notes
V1.0.0 5.29 21/07/15 GD First release
Any additional notes since printing will be appended to the rear of this document on separate sheets of paper.
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Contents
Preface ............................................................................................................................................................................ 3
Safety warnings ........................................................................................................................................................... 3
1. Quick start guide .................................................................................................................................................. 8
2. Safety precautions ................................................................................................................................................ 9
3. Overview .............................................................................................................................................................. 10
4. Mounting ............................................................................................................................................................. 11
4.1. Power supply dimensions ............................................................................................................................. 11
4.2. MelcoREMOTE dimensions .......................................................................................................................... 11
4.3. Mounting flanges .......................................................................................................................................... 12
4.4. Installation Location ...................................................................................................................................... 12
5. Antenna connection* .......................................................................................................................................... 13
6. Ethernet connection ........................................................................................................................................... 14
7. Connecting power .............................................................................................................................................. 15
8. Connecting I/O .................................................................................................................................................... 16
8.1. Connecting Inputs ......................................................................................................................................... 16
8.1.1. 0-10V Inputs ......................................................................................................................................... 16
8.1.2. Resistance (10K Thermistor) Inputs ..................................................................................................... 17
8.1.3. Digital Inputs ........................................................................................................................................ 18
8.1.4. 4-20mA Inputs ...................................................................................................................................... 18
8.2. Connecting Outputs ...................................................................................................................................... 19
9. Connecting Mitsubishi Centralised Controllers ............................................................................................... 20
9.1. Connection using crossover cable ................................................................................................................ 20
9.2. Connection through a switch/hub .................................................................................................................. 20
9.3. Configuration ................................................................................................................................................ 21
9.3.1. PIN Codes ............................................................................................................................................ 21
9.3.2. AE-200 ................................................................................................................................................. 21
10. Connecting Modbus Devices ............................................................................................................................. 22
10.1. Modbus RTU devices ................................................................................................................................... 22
10.2. Modbus TCP devices .................................................................................................................................... 23
10.3. Modbus Slave mode ..................................................................................................................................... 23
10.4. I/O Module Mode .......................................................................................................................................... 23
11. Server Connection .............................................................................................................................................. 24
11.1. GPRS ........................................................................................................................................................... 24
11.1.1. Fitting/Replacing a SIM Card ............................................................................................................... 24
11.2. Ethernet ........................................................................................................................................................ 26
11.3. Modbus I/O Module ...................................................................................................................................... 26
12. Configuration and Commissioning ................................................................................................................... 27
12.1. Buttons ......................................................................................................................................................... 27
12.2. Initial power on .............................................................................................................................................. 27
12.3. Screen navigation ......................................................................................................................................... 27
12.4. Status screen ................................................................................................................................................ 28
12.5. Password protection ..................................................................................................................................... 30
12.6. Configuration screen ..................................................................................................................................... 31
12.6.1. SIM network selection .......................................................................................................................... 32
12.6.2. I/O Types ............................................................................................................................................. 32
12.7. I/O Status screen .......................................................................................................................................... 33
12.7.1. External device I/Os ............................................................................................................................. 34
12.7.2. Overriding outputs ................................................................................................................................ 34
13. Troubleshooting ................................................................................................................................................. 36
13.1. Status screen messages .............................................................................................................................. 36
13.2. Configurable inputs ....................................................................................................................................... 37
13.3. MelcoREMOTE does not power up .............................................................................................................. 38
13.4. Centralised controllers .................................................................................................................................. 39
13.5. External RS-485 devices .............................................................................................................................. 40
13.6. Other problems ............................................................................................................................................. 41
13.7. Technical support ......................................................................................................................................... 41
14. Technical specification ...................................................................................................................................... 42
15. Connection Record ............................................................................................................................................. 44
16. Modbus Slave Register tables ........................................................................................................................... 48
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1
[Fig. 1]
Included Items
MelcoREMOTE
unit
Mounting
flanges
Ferrite Core (for
GPRS antenna)*
GPRS
Antenna*
Installation
Instructions
Power
Supply
Ferrite Core
(for Ethernet cable)
* Only for GPRS version MelcoREMOTE2G
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[Fig. 2]
Overview
I
2
Page 8 of 52
1. Quick start guide
Step 1:
Mount the Procon MelcoREMOTE and power supply on suitable DIN rail and complete the wiring between the two.
Connect the 230VAC power supply but do not switch ON.
Step 2:
Connect the GPRS antenna or Ethernet cable, depending on the desired server connection method.
Step 3:
If required, connect the MelcoREMOTE to the Mitsubishi Centralised Controllers (e.g. AE-200) with Ethernet cable.
Step 4:
Connect all other required inputs, outputs and RS-485 devices (e.g. MelcoBEMS MINI (A1M) devices).
Step 5:
Switch ON the power supply and check the MelcoREMOTE produces a double beep and within 1 minute successfully
connects and synchronises with the server. After the synchronisation is complete the screen will show the message
‘Online’ or ‘Connected to server’, both of these indicate a successful connection has been made.
Please refer to the Configuration and Commissioning section for more information on the messages shown on the
screen.
Step 6:
The current readings of all configured I/Os can be viewed and checked using the screen, see section Configuration and
Commissioning for more details.
This section also describes the ‘toggle’ feature which can be used to temporarily switch the digital outputs ON/OFF for
testing purposes.
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2. Safety precautions
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger of injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage to the unit.
Warning:
• Ask the dealer or an authorised technician to install the unit
- Improper installation by the user may result in water leakage, electric shock, or fire
• Use the specified cables for wiring. Make the connections securely so that any outside forces acting on the cables are
not applied to the terminals
- Inadequate connection and fastening may generate heat and cause a fire
• Never repair the unit. If the controller must be repaired, consult the dealer
- If the unit is repaired improperly, electric shock, or fire may result
• When handling this product, always wear protective equipment. EG: Gloves, full arm protection and safety glasses
- Improper handling may result in injury
• Have all electric work done by a licensed electrician according to "Electric Facility Engineering Standard", "Interior Wire
Regulations" and the instructions given in this manual and always use a special circuit
- If the power source capacity is inadequate or electric work is performed improperly, electric shock and fire may result
• Keep the electric parts away from any water - washing water etc…
- Contact may result in electric shock, fire or smoke
• Do not reconstruct or change the settings of the protection devices
- If the protection device is shorted or operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or
explosion may result
• To dispose of this product, consult your dealer
Caution:
• Ground the unit
- Do not connect the ground wire to gas or water pipes, lightning rods, or telephone ground lines. Improper grounding may result
in electric shock
• Install the power cable so that tension is not applied to the cable
- Tension may cause the cable to break and generate heat which may, in turn, cause fire
• Install a leak circuit breaker, as required
- If a leak circuit breaker is not installed, electric shock may result
• Use power line cables of sufficient current carrying capacity and rating
- Cables that are too small may leak, generate heat, and cause a fire
• Use only a circuit breaker and fuse of the specified capacity
- A fuse or circuit breaker of a larger capacity or a steel or copper wire may result in a general unit failure or fire
• Be careful that the installation base is not damaged
- If the damage is left uncorrected, the unit may fall and cause personal injury or property damage
• Safely dispose of the packing materials
- Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries
- Tear apart and throw away plastic packaging bags so that children will not play with them - If children play with a plastic bag
which has not been torn apart, they face the risk of suffocation
¾ Before installing the unit, make sure you read all the
“Safety precautions”
¾ The “Safety precautions” provide very important points
re
g
arding safety. Make sure you follow them
Warning:
Carefully read the labels affixed to the main unit
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3. Overview
The Procon MelcoREMOTE is an automatic monitoring, logging and control device which communicates over the
Internet, allowing users to monitor and control A/C and other devices from anywhere in the world by simply logging
onto a webpage or by using a smartphone app.
Procon MelcoREMOTE connects to the Internet and communicates with a central server, uploading stored data logs
and downloading configuration data.
Procon MelcoREMOTE connects to the server using Ethernet.
Procon MelcoREMOTE2G connects to the internet using the built in GPRS modem with SIM card.
Throughout this installation manual, unless otherwise specified both Procon MelcoREMOTE and Procon
MelcoREMOTE2G are referred to as just MelcoREMOTE.
Figure 1 shows the items included with the MelcoREMOTE.
Figure 2 shows an overview of MelcoREMOTE.
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4. Mounting
The MelcoREMOTE and power supply should be mounted on DIN rail in a panel of suitable size, leaving enough space
around the unit for cable conduit and additional equipment.
4.1. Power supply dimensions
4.2. MelcoREMOTE dimensions
42mm
210mm
87mm
93mm
76mm
56mm
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4.3. Mounting flanges
Appropriate wall fixings must be used
4.4. Installation Location
When installing MelcoREMOTE:
- Avoid locations in direct sunlight
- Avoid locations exposed to steam or oil vapour
- Avoid locations where combustible gas may leak, settle or be generated
- Avoid installation near machines emitting high-frequency waves
- Avoid places where acidic solutions are frequently handled
- Avoid places where sulphur-based or other sprays are frequently used
- Avoid areas of high humidity
- Install inside the building
- Install near the connected indoor units, if applicable
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5. Antenna connection*
Ensure the Antenna cable is screwed tightly to the Antenna connector on the top of the MelcoREMOTE unit.
To maintain the appropriate EMC classification for the intended environment the Ferrite Core supplied with
the MelcoREMOTE must be installed onto the antenna cable with 2 loops (Image below), and be located at the
boundary of the panel the MelcoREMOTE is installed within.
The antenna should be located on a metal surface, as the antenna has a magnetic base.
The most suitable location for the antenna can be discovered by checking the antenna signal strength via the display
on the MelcoREMOTE unit.
* Only for GPRS version MelcoREMOTE2G
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6. Ethernet connection
If communication via Ethernet is required then in order to maintain the appropriate EMC classification for
the intended environment a cable ferrite (Wurth 74271221S) must be Installed onto the CAT 5/6 cable with 1
loop (Image below), and be located as close as possible to the MelcoREMOTE Ethernet socket.
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7. Connecting power
A double pole (Live and Neutral) 5A switch or circuit breaker must be provided in line with the supply to the
MelcoREMOTE power supply and be in close proximity to it. It must be clearly marked as the disconnecting device for
the MelcoREMOTE.
Ensure the mains cable supplying the power to the MelcoREMOTE power supply is suitably rated for the intended
environment and current draw of the MelcoREMOTE.
Warning:
Electrical work should be done by qualified electrical engineers / electrician in accordance with "Engineering
Standards for Electrical Installation" and supplied installation manuals. Dedicated circuits should also be
used. If the power circuit lacks capacity or has an installation failure, it may cause a risk of electric shock or
fire.
Caution:
Do not use anything other than the correct capacity breaker and fuse. Using fuse, wire or copper wire with too
large capacity may cause a risk of malfunction or fire.
− Be sure to take power from the special branch circuit
− Install the unit to prevent any of the control circuit cables coming into direct contact with power
cables
− Ensure that there is no slack on all wire connections
− Never connect the power cable to leads for the transmission cables. This will damage the
transmission cables
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8. Connecting I/O
Caution:
Only use shielded cables for connecting sensors to MelcoREMOTE, to reduce the possibility of interference
with radio communications services. Using shielded cables ensures that you maintain the appropriate EMC
classification for the intended environment.
All shields must be tied to an appropriate Earth point within the installation panel.
8.1. Connecting Inputs
For all input types Belden 8760 type cable is recommended.
8.1.1. 0-10V Inputs
The maximum cable length for 0-10V inputs is 250m. This represents a deviation of < 1%.
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8.1.2. Resistance (10K Thermistor) Inputs
The maximum cable length for resistance type inputs is 250m. This represents a deviation of < 1% at 25ºC for 10K
thermistors.
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-
+
8.1.3. Digital Inputs
The maximum cable length for digital inputs is 1000m. This represents a cable loss of < 0.1V.
8.1.4. 4-20mA Inputs
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To connect a 4-20mA sensor that requires “loop” power:
- Isolate the MelcoREMOTE supply.
- Connect the positive (+) terminal on the sensor to the RS-485 Port 1+ or RS-485 Port 2+ terminal on the
MelcoREMOTE.
- Connect the negative (-) terminal on the sensor to the required positive (+) configurable input terminal on
MelcoREMOTE (e.g. IN01+).
The maximum cable length for 4-20mA inputs is 1000m. This represents a cable loss of < 5V at 25mA.
8.2. Connecting Outputs
For connecting contactors (nominal 100mA coil) to digital outputs, the maximum cable length is 50 metres (16/0.2, trirated cable). This represents a cable loss of <1V @ 80mA (typical contactor current).
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9. Connecting Mitsubishi Centralised Controllers
MelcoREMOTE can be used to connect to one or more Mitsubishi centralised controllers, such as the AE-200, EW-50,
AG-150, G-50 and GB-50, via Ethernet. It can be configured to access data for all A/C Groups setup on the centralised
controller. Certain A/C settings can be changed such as Drive, Setpoint, Mode, Air Direction, Fan Speed, whilst values
such as the Return Air Temperature can be monitored.
9.1. Connection using crossover cable
If a single centralised controller is to be connected to the MelcoREMOTE then a direct connection between the two can
be made using a crossover cable.
9.2. Connection through a switch/hub
As an alternative to using a direct connection with crossover cable, the connection through an Ethernet hub or switch
can be used instead. This method must be used if more than one centralised controller is to be connected to
MelcoREMOTE.
When using a switch/hub all Ethernet cable must be the straight-through type, as opposed to the crossover type.
Switch/Hub
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9.3. Configuration
The default IP address for all centralised controllers is 192.168.1.1 and subnet mask 255.255.255.0.
The default IP address for MelcoREMOTE is 192.168.1.2 and subnet mask 255.255.255.0.
When connecting Ethernet devices together each one needs to have a unique IP address.
9.3.1. PIN Codes
The following PIN codes must be entered to enable communication between the central controller and MelcoREMOTE.
Controller Type PIN Code required
G-50 G50-WebMonitor
GB-50 GB50-Basic
AG-150 AG150-Basic
AE-200 / EW-50 (no PIN required)
The applicable centralised controller PIN code must be entered to enable communication with
MelcoREMOTE.
9.3.2. AE-200 / EW-50
The AE-200 and EW-50 controller has a setting called ‘Old Model Compatibility Mode’ which needs to be set to ON for
correct operation with MelcoREMOTE. This setting can be accessed through the ‘Initial Setting’ screen under the
‘Advanced’ tab or embedded webpage for the AE-200, for the EW-50 it must be changed through the embedded
webpage.
All AE-200 and EW-50 controllers must have their ‘Old Model Compatibility Mode’ setting set to ON for
correct operation with the MelcoREMOTE.
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10. Connecting Modbus Devices
MelcoREMOTE can act as a Modbus Master device and be configured to communicate with external Modbus Slave
devices, to expand its I/O.
The following types of Modbus Slave device can be connected to MelcoREMOTE :
- Devices supporting the Modbus RTU protocol via RS-485 (e.g. MelcoBEMS MINI (A1M))
- Devices supporting the Modbus TCP protocol via Ethernet
10.1. Modbus RTU devices
The MelcoREMOTE has two RS-485 ports which can be used independently to connect to external devices which
support the Modbus RTU communication protocol.
Using RS-485, multiple devices can be connected together in a daisy chain bus formation. The maximum length of the
bus is 1000m, and up to 32 devices can be connected together on the bus. The following image shows two
MelcoBEMS MINI Modbus devices connected in a daisy-chain formation to a MelcoREMOTE.
Every Modbus device has two connections named ‘A’ and ‘B’ (although some devices use different naming
conventions, such as ‘D+’ and ‘D-‘). All ‘A’ connections should be wired together in the chain, as should all the ‘B’
connections. MelcoREMOTE also requires a common ground between all Modbus devices connected to it.
Caution:
Use only shielded twisted-pair cables for the RS-485 network to reduce the possibility of interference with
radio communications services. Using shielded cables ensures that you maintain the appropriate EMC
classification for the intended environment.
All shields must be tied to an appropriate Earth point within the installation panel.
Page 23 of 52
Depending upon the application and the equipment connected to MelcoREMOTE, termination and/or pull up/down
resistors may be required. MelcoREMOTE has built in jumper selectable termination and pull up/down resistors.
To power RS-485 Modbus devices which require 24VDC, MelcoREMOTE can be used to provide DC power and
ground from the RS-485 + and RS-485 - connections respectively. Ensure the current draw of the devices does not
result in the power supply exceeding its maximum current rating (See the Technical specification section for more
information).
If an external power source is used to power the device, ensure that MelcoREMOTE and the device have a shared
ground connection (the RS-485 - terminal can be used for this).
For help with RS-485 connectivity see the Troubleshooting section.
10.2. Modbus TCP devices
MelcoREMOTE has an Ethernet port which can be used to communicate with external devices which support the
Modbus TCP communication protocol.
A crossover Ethernet cable can be used to form a direct connection between MelcoREMOTE and a single Modbus
TCP device. If multiple devices are to be connected then a network must be created using one or more Ethernet
switches/hubs, along with straight through Ethernet cable. This is the same as how Centralised Controllers connect to
MelcoREMOTE.
10.3. Modbus Slave mode
Either one or both of the two RS-485 ports on MelcoREMOTE can be configured to provide Modbus Slave functionality.
This allows MelcoREMOTE to act as a Modbus Slave device so that 3rd party controllers can access all I/O data from
the MelcoREMOTE.
The Modbus Slave Register tables sections provides more information on Modbus Slave mode.
MelcoREMOTE can also be configured to also act as a Modbus TCP Slave device.
10.4. I/O Module Mode
MelcoREMOTE can be set to be a standalone I/O module which does not require a server connection. MelcoREMOTE
then acts as a Modbus RTU Slave and Modbus TCP Slave device to allow its I/O data to be accessed.
See the Configuration and Commissioning section for more information.
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11. Server Connection
MelcoREMOTE requires a connection to a server in order to upload data logs and download configuration and control
data. This connection is via either GPRS or Ethernet. See the Configuration and Commissioning section for more
information on configuring the MelcoREMOTE with the correct connection settings.
11.1. GPRS
An active GPRS enabled SIM card needs to be fitted inside the MelcoREMOTE unit to provide a server connection via
GPRS. In addition the supplied GPRS antenna must be fitted and screwed firmly into the unit.
11.1.1. Fitting/Replacing a SIM Card
Under certain circumstances it may be necessary to fit or change the SIM card in the MelcoREMOTE unit.
To do this, follow the following procedure:
1) Ensure the power to the MelcoREMOTE is switched OFF.
2) Remove the MelcoREMOTE from the DIN rail and use a screwdriver to remove the lid, as shown in the
following diagram.
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3) The SIM card is located in the SIM holder which is situated on the PCB located in the lid of the unit.
If needed, remove the old SIM card, then fit the new one by sliding it into the SIM holder, in the direction of the
arrow in the following diagram:
4) Replace the lid of the unit by pressing down until it has clicked into place.
5) It may be necessary to change the MelcoREMOTE network setting after the new SIM is fitted. See the
Configuration and Commissioning chapter for more information on how to do this.
6) If not already fitted, fit the GPRS antenna. This should be located upright on a metal surface, as it has a
magnetic base.
The SIM card should be inserted such that the side with the metal contacts on are face down (i.e. not visible
when fitted).
The SIM card fitted must be GPRS enabled, contact the SIM provider to confirm this if necessary.
The SIM must not have a PIN enabled.
Ensure the antenna is screwed tightly into the MelcoREMOTE unit.
Avoid using prepay (pay as you go) SIM cards.
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11.2. Ethernet
Ethernet can be used to connect to the server as an alternative to GPRS.
MelcoREMOTE has a 10BASE-T Ethernet controller built in to allow the unit to connect to the server via a corporate
Ethernet network, using standard Cat5/Cat6 cable.
MelcoREMOTE supports DHCP but can be assigned a static IP address instead if required.
It is recommended to check the connection settings are correct before plugging in the Ethernet cable for
the first time – see the Configuration and Commissioning section.
11.3. Modbus I/O Module
MelcoREMOTE can be set to be a standalone Modbus I/O module which does not require a server connection.
MelcoREMOTE then acts as a Modbus RTU Slave and/or Modbus TCP Slave device to allow the current I/O values to
be accessed.
To enable I/O Module mode the Connection Type must be set to ‘None (slave)’. See the Configuration and
Commissioning chapter for more details.
The Modbus Slave Register tables sections provides more information on Modbus for I/O Module mode.
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12. Configuration and Commissioning
12.1. Buttons
MelcoREMOTE has six buttons on the front fascia, as the following image shows.
12.2. Initial power on
Upon applying power the MelcoREMOTE will beep twice and the LCD backlight will illuminate.
After a few seconds the MelcoREMOTE firmware version will be briefly shown before the Status Screen.
MelcoREMOTE will immediately attempt to connect and synchronise with the server via GPRS or Ethernet.
12.3. Screen navigation
The three navigation buttons located below the LCD are used mainly for navigation between screens. The text on the
bottom line of the LCD indicates the function of the button directly below it.
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12.4. Status screen
The Status screen is effectively the ‘home’ screen and provides server connection information.
When using GPRS the current GSM signal strength will be shown in addition to server connection information, when
using Ethernet the IP address of the MelcoREMOTE will be shown, when set to be an I/O module the Modbus RTU
Slave ID and Baud Rate will be shown.
Status screen when using GPRS
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Status screen when using Ethernet
Status screen when set to be an I/O module
When set to GPRS or Ethernet the text in the centre of the screen describes the current connection state. This text will
change whilst the MelcoREMOTE establishes a server connection. The sequence of events MelcoREMOTE would
typically take to synchronise with the server (using GPRS) are:
Page 30 of 52
1) Modem initialisation
2) GSM signal strength check
3) Connection to Internet
4) Connection to server
5) Synchronisation with server
While the MelcoRETAIL synchronises with the server the progress is displayed, as shown in the following image.
Synchronisation progress indication
Pressing I/Os enters the I/O Status screen, pressing Sync forces the MelcoRETAIL to synchronise with the server and
Config enters the Configuration screen. The Status screen can always be returned to from either the I/O Status or
Configuration screens by pressing Back.
12.5. Password protection
The I/O Status and Configuration screens can be protected by means of an optional 4-digit Commissioning Password.
When shipped from the factory MelcoREMOTE does not have this password enabled and all screens are freely
accessible. After commissioning this password can be enabled and changed to prevent unauthorised access to
MelcoREMOTE configuration and output overrides.
If you unexpectedly encounter a password protected screen please contact your supplier.
Page 31 of 52
12.6. Configuration screen
From the Status screen the Configuration screen can be accessed. The Configuration screen allows the connection
settings to be modified.
The Up and Down buttons can be used to change the value currently shown, the Select button can be used to move
onto the next highlighted field, if applicable (e.g. for when changing IP addresses).
The Next and Back buttons can be used to navigate through the different settings. When all settings have been set the
option to save the settings will appear. After Yes or No have been selected the Status screen will be returned to.
Configuration screen navigation
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12.6.1. SIM network selection
There are several networks available for selection including O2, T-Mobile, Vodafone, Orange and BT. All
MelcoREMOTE2G units will be supplied with a KPN 2G roaming SIM so there is not normally be a need to change this
setting.
MelcoREMOTE2G will not be able to connect to the server if this setting is incorrect and doesn’t match the network of
the SIM inserted.
SIM will be supplied activated and roaming from Ex-Works Date, this will be the beginning of the 60 month
SIM Contract.
See Server Connection chapter for more details on using SIM cards in MelcoREMOTE
SIM network selection screen
12.6.2. I/O Types
When set to standalone I/O module mode (Connection Type set to None (slave)) the configurable input types can be
changed via the Configuration Screen.
The configurable input type can be changed by pressing the Change button. The possible input types are 0 – 10V, 4 –
20mA, 10K Resistive and Digital.
The next/previous configurable input can be selected by pressing the Up and Down buttons.
When all input types have been configured, pressing the Next button will advance to the next screen.
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Configurable Input type selection
12.7. I/O Status screen
The I/O Status screen shows live values for all MelcoREMOTE I/Os (for Variable type I/Os only the ones being logged
are shown).
When the I/O Status screen is first entered it shows the name and live value for input IN01. The value will update every
second.
I/O Status screen for configurable input IN01
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Using the Up and Down buttons to the right of the LCD the other I/Os can be viewed (IN02, IN03, IN04 etc…).
When the connection type is GPRS or Ethernet, if the I/Os have not been pre-configured they will have their default I/O
name and unit of measure, and configurable inputs will have their default input type which is 0-10V..
When set to standalone I/O module mode (Connection Type set to None (slave)) the configurable input types must be
changed via the Configuration Screen. The configurable input values on the I/O Status screen will always be shown in
their raw units (i.e. Volts, mA or ).
12.7.1. External device I/Os
External device I/Os are only viewable on the screen if those external devices have been pre-configured.
If MelcoREMOTE fails to read a register from an external device its value will show READ ERROR, or if
MelcoREMOTE fails to write to a register value WRITE ERROR will be shown.
12.7.2. Overriding outputs
To aid commissioning, digital output type I/Os can be overridden (ON/OFF) to test installation wiring. To override a
digital output navigate to it by pressing the Up and Down buttons and press the Toggle button. The value shown on
screen will update to reflect the new value.
I/O Status screen for digital output DO01
Page 35 of 52
The output will remain in the overridden state until either the Back, Up or Down buttons are pressed. At this point the
output will resume its previous state from before the Toggle button was pressed the first time for that output. Any
control logic set up to control the output will resume.
Whilst an output is being overridden its state will not be changed by any control logic.
When overriding an output on an external device it may take a few seconds for the override to take effect.
Page 36 of 52
13. Troubleshooting
This chapter gives suggested solutions to problems that users may encounter when installing and configuring
MelcoREMOTE.
13.1. Status screen messages
Error Message Possible cause(s) Possible solution(s)
SIM ERROR
(using GPRS)
No SIM card fitted Insert GPRS enabled SIM card
SIM not fitted correctly
Check SIM is fitted correctly as
described in the Server
Connection chapter of this manual
SIM not activated
Check with SIM provider that the
SIM has been activated
MODEM ERROR
(using GPRS)
MelcoREMOTE could not
communicate with GPRS modem
Contact the technical support
team for assistance, see the
Technical Support section
SIM PIN
(using GPRS)
SIM has a PIN enabled
Disable the SIM PIN (this can be
done by installing the SIM into a
mobile phone, if the PIN is known)
NO SIGNAL
(using GPRS)
Inadequate GPRS signal
Move antenna to better location
(e.g. away from metalwork, away
from sources of electrical noise,
closer to a window)
Check antenna is tightly screwed
onto the MelcoREMOTE unit
Use a SIM from a different
network provider (this may or may
not help)
Fit a high gain antenna or external
antenna.
Page 37 of 52
CONNECTION ERROR
(using GPRS)
MelcoREMOTE cannot establish
an internet connection
Ensure SIM card is GPRS
enabled (contact SIM provider for
confirmation)
Check correct SIM network is
selected via Configuration screen.
Error could be due to inadequate
GPRS signal, see possible
solutions for the NO SIGNAL error
message.
CONNECTION ERROR
(using Ethernet)
MelcoREMOTE cannot establish
an internet connection
Check IP address settings are
correct
Check LAN firewall allows
outbound connections on TCP
port 1000
ETHERNET ERROR
(using Ethernet)
MelcoREMOTE cannot connect to
Ethernet network
Check Ethernet cable is fitted
correctly
DHCP ERROR
(using Ethernet)
MelcoREMOTE cannot obtain IP
address information from the
DHCP server
Check Ethernet cable is fitted
correctly. Contact your LAN
network administrator for
assistance
SERVER ERROR
MelcoREMOTE cannot connect to
server
If problem persists for more than
15 minutes contact the technical
support team for assistance, see
the Technical Support section
13.2. Configurable inputs
Problem Possible cause(s) Possible solution(s)
Input value not as expected
Input type not setup correctly Set input type correctly
Incorrect wiring
Check wiring is correct, see the
Connecting I/O chapter.
Page 38 of 52
Check wiring polarity.
Faulty field wiring Check continuity of field wiring
Sensor fault
If possible, check sensor reading
is as expected using a multimeter
Unit of measure not as expected
(e.g. thermistor value shown in
instead of °C)
Unit of measure not applied Apply unit of measure to the input
13.3. MelcoREMOTE does not power up
Problem Possible cause(s) Possible solution(s)
No beep heard and no LCD
backlight when applying power,
but unit does have mains power
Loose wiring
Check connections between
power supply and MelcoREMOTE
are secure
Damaged/faulty power supply
Check 24VDC is being supplied
from the power supply using a
multimeter, if not contact supplier
Over-current or short circuit
Remove all connections from
MelcoREMOTE other than power
supply, then troubleshoot field
wiring
No mains power Tripped switch or circuit breaker Reset the switch or circuit breaker
MelcoREMOTE constantly resets
Ancillary equipment (e.g.
contactors or external I/O
modules) drawing too much
current
Power ancillary equipment from a
separate power supply ensuring a
common ground connection
between power supplies
Short circuit across 24VDC power
supply
Remove the short circuit
Damaged/faulty power supply
Check 24VDC is being supplied
from the power supply using a
multimeter, if not contact supplier
Page 39 of 52
13.4. Centralised controllers
Problem Possible cause(s) Possible solution(s)
READ ERROR shown on I/O
Status screen
Centralised controller not
connected or powered
Check centralised controller is
connected to the MelcoREMOTE
via Ethernet and has power
Incorrect Ethernet cable type
used
For a direct connection between
MelcoREMOTE and a single
centralised controller, use a
crossover type cable
Ethernet devices connected with
conflicting IP addresses
Ensure all Ethernet devices on
the network have unique IP
addresses
A/C Group not present on
centralised controller
Check the Group setup on the
centralised controller is as
expected
Required PIN code not entered
Ensure the relevant PIN code on
the centralised controller has
been entered. See Connecting
Mitsubishi Centralised Controllers
chapter
‘Old Model Compatibility Mode’
setting set to OFF
(AE-200 only)
Check this setting is set to ON
WRITE ERROR shown on I/O
Status screen
Value being written is out of range Check value is within range
Page 40 of 52
13.5. External RS-485 devices
Problem Possible cause(s) Possible solution(s)
READ ERROR shown on I/O
Status screen
External device address incorrect
Check configured address is
correct. This setting can usually
be changed on the external
device using DIP switches or
config software.
Two external devices connected
on the bus with the same address
Change the address on the
conflicting device
External device communication
settings incorrect
Check configured baud rate and
parity settings are correct. These
settings can usually be changed
in the external device using DIP
switches or config software.
Polarity of ‘A’ and ‘B’ connections
incorrect
Check polarity is correct.
Note: The labelling of ‘A’ and ‘B’
can be ambiguous so try
swapping 'A' and 'B' even if this
means going against connection
diagrams
No ground connection
Ensure there is a ground
connection between
MelcoREMOTE and external
device
RS-485 termination / pullup /
pulldown resistors are set
incorrectly
See the Connecting to external
devices section for more
information.
Too many RS-485 devices
connected on the bus
If there are more than 32 devices
connected on the bus then an RS-
485 repeater may be needed to
boost the bus signal. These can
be purchased from many different
electronics retailers.
External device register attempted
to be read is invalid
Check register numbers against
external device documentation.
WRITE ERROR shown on I/O
Status screen
Value being written is out of range
Check value is within range by
referring to device documentation
Page 41 of 52
13.6. Other problems
Problem Possible Cause(s) Possible Solution(s)
MelcoREMOTE does not save
data logs when power is lost
Backup coin cell battery flat or not
present
Fit replacement battery (CR2032
3V Lithium)
MelcoREMOTE loses control
functionality when power is lost
for more than 30 seconds.
13.7. Technical support
CONTACT MITSUBISHI TECHNICAL HELPDESK
TELEPHONE: 0870 3000 300
EMAIL: aircon.support@meuk.mee.com
Page 42 of 52
14. Technical specification
Parameter Min. Typ. Max. Comments
Power supply
Voltage (AC)
MelcoREMOTE Voltage (DC)
85VAC
15VDC
230VAC
24VDC
264VAC
30VDC
Current (AC)
Current (DC)
Frequency
47Hz
0.48A
1.0A
50Hz
1.5A
63Hz
At 230VAC
Terminals
Cable size
3.81mm pitch connectors
5.08mm pitch connectors
16AWG
1.5mm²
14AWG
2.5mm²
Inputs
0-10V
4-20mA
Thermistor
Digital
Pulse length
Sample frequency
Resolution
0V
4mA
0
100ms
10SPS
10V
20mA
70k
15bit
Configurable as current/ voltage/
resistance or digital.
0-10V Outputs
Resolution
Current drive at 10V
12bit
5mA
Per channel
Switched Power Outputs
Voltage
Current
24VDC
30VDC
1A
1.5A
Per channel
Total across all channels
User Interface
128 x 64 monochrome LCD
6 buttons
Sounder
110dB @
10cm
Internal piezo sounder
Communication Ports
Ethernet
RS-485
1200b/s
10Mb/s
9600b/s
115200b/s
Connection via RJ45 connector
Connection via 3.81mm connector
GPRS digital modem
Frequency
Sensitivity
Transmit power
850MHz
1W @
1800/1900
-106dB
1900MHz
2W @
850/900MHz
Page 43 of 52
Antenna Gain
MHz
2dBi
Battery
Voltage
Lifetime
3V
6 months
Battery is type 3V CR2032.
The battery is only used when the
MelcoREMOTE is not powered
from a permanent power source.
Environmental
Operating temperature -10°C 40°C
Storage temperature
Relative humidity
-20°C
50°C
90%
Non-condensing
Environment resist IP30
Dimensions
Length
Width
Depth
Weight
210mm
87mm
42mm
0.543kg
Page 44 of 52
15. Connection Record
Configurable Inputs
IO Ref.
0-10V
4-20mA
Res /Dig
Description
IN01
IN02
IN03
IN04
IN05
IN06
IN07
IN08
IN09
IN10
IN11
IN12
Page 45 of 52
Switched Power Outputs
IO Ref.
Description
DO01
DO02
DO03
DO04
DO05
DO06
DO07
DO08
DO09
DO10
DO11
DO12
Analogue Outputs
IO Ref.
Description
AN01
AN02
AN03
AN04
Page 46 of 52
RS-485 Expansion Devices
Address
Description
Page 47 of 52
Centralised Controllers / Modbus TCP Devices
IP Address Description
Page 48 of 52
16. Modbus Slave Register tables
All MelcoREMOTE I/Os are exposed as both Modbus Input (analogue input) registers and Modbus Holding
(analogue output) registers. The register numbers are the same for both register types.
Each I/O value is exposed as a 32-bit value, so two Modbus registers are used for each I/O value. The
lower of the two register numbers holds the most significant 16-bits of the I/O value.
Each I/O can be read in 9 different data formats; float32, uint32 (0dp, 1dp, 2dp and 3dp) and int32 (0dp,
1dp, 2dp and 3dp).
If an unsigned register (uint32) is being read then any negative value will be returned as value 0.
Outputs can have their values changed via a Modbus write commands to the Holding registers, using
function codes 6 and 16.
Here is an example Modbus RTU command to read configurable inputs 1 – 4 from Slave ID 1 as Input
registers in the data format uint32 (0dp):
01 04 13 DC 00 08 34 B2
where
01 is the Slave ID,
04 is the function code to read Input Registers,
13 DC is the start register (5084),
00 08 is the number of registers to read (8 registers as each I/O is comprised of two Modbus registers).
34 B2 is the 16-bit CRC.
An example reply from the MelcoREMOTE for the above command is:
01 04 10 00 00 00 17 00 00 26 6B 00 01 1F 17 00 01 1E C1 A5 E0
Where
01 is the Slave ID
04 is the function code to read Input Registers
10 is the number of data bytes following (16)
00 00 00 17 is the value of configurable input 1 (23)
00 00 26 6B is the value of configurable input 2 (9835)
00 01 1F 17 is the value of configurable input 3 (73495)
00 01 1E C1 is the value of configurable input 4 (73409)
A5 E0 is the 16-bit CRC
The following table gives the Modbus register numbers for each I/O type. The register numbers are all zero
based.
Page 49 of 52
I/OName float32
uint32
0dp
uint32
1dp
uint32
2dp
uint32
3dp
int32
0dp
int32
1dp
int32
2dp
int32
3dp
Timer01 1000 5000 15000 25000 35000 10000 20000 30000 40000
… … … … … … … … … …
Timer10 1018 5018 15018 25018 35018 10018 20018 30018 40018
Clock 1020 5020 15020 25020 35020 10020 20020 30020 40020
RingIndicator 1022 5022 15022 25022 35022 10022 20022 30022 40022
AlarmIndicator 1024 5024 15024 25024 35024 10024 20024 30024 40024
Buzzer 1026 5026 15026 25026 35026 10026 20026 30026 40026
DigitalOutput01 1028 5028 15028 25028 35028 10028 20028 30028 40028
… … … … … … … … … …
DigitalOutput12 1050 5050 15050 25050 35050 10050 20050 30050 40050
Counter01 1052 5052 15052 25052 35052 10052 20052 30052 40052
… … … … … … … … … …
Counter12 1074 5074 15074 25074 35074 10074 20074 30074 40074
AnalogueOutput01 1076 5076 15076 25076 35076 10076 20076 30076 40076
… … … … … … … … … …
AnalogueOutput04 1082 5082 15082 25082 35082 10082 20082 30082 40082
ConfigInput01 1084 5084 15084 25084 35084 10084 20084 30084 40084
… … … … … … … … … …
ConfigInput12 1106 5106 15106 25106 35106 10106 20106 30106 40106
Frequency01 1108 5108 15108 25108 35108 10108 20108 30108 40108
… … … … … … … … … …
Frequency12 1130 5130 15130 25130 35130 10130 20130 30130 40130
Variable001 1384 5384 15384 25384 35384 10384 20384 30384 40384
… … … … … … … … … …
Variable999 3380 7380 17380 27380 37380 12380 22380 32380 42380
EXT001 46000 48100 50200 52300 54400 56500 58600 60700 62800
… … … … … … … … … …
EXT999 47998 50098 52198 54298 56398 58498 60598 62698 64798
Page 50 of 52
Page 51 of 52
This product is designed and intended for use in the residential, commercial and light-
industrial environment.
The product at hand is based on the following EU regulations:
• Low Voltage Directive 2006/95/EC
• EMC Directive 2004/108/EC
Please be sure to put the contact address/telephone number on
this manual before handing it to the customer.
MITSUBISHI ELECTRIC UK
MITSUBISHI ELECTRIC UK, TRAVELLERS LANE, HATFIELD HERTFORDAHIRE, AL10 8XB
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