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Preface 

Safety warnings 

 

 

Caution: 

 
Do not expose to rain or moisture. 

 

Shielded Signal Cables: 

 
Use only shielded cables for connecting peripherals to any Procon A1M device 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.  
 

 

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 utilized 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 A1M with respect to the receiver. 

 

Move the Procon A1M away from the receiver.  

 

 

If necessary, consult a Procon A1M 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. 

Summary of Contents for Procon A1M

Page 1: ...Procon A1M FOR INSTALLERS INSTALLATION MANUAL Version 1 1 1 For safe and correct use please read this installation manual thoroughly before installing the PROCON A1M MITSUBISHI ELECTRIC ...

Page 2: ......

Page 3: ...receding 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 A1M with respect to the receiver Move the...

Page 4: ...Page 1 of 12 A RS 485 connector B CN105 CN92 connection lead 1 Fig 1 A B ...

Page 5: ...Page 2 of 12 2 Fig 2 ...

Page 6: ...6 3 4 RS 485 termination 6 4 Installation 7 4 1 Physical connection between the Procon A1M and M S and P Series indoor units 7 4 2 Power supply 7 4 3 Modbus connections 7 5 Status LEDs 8 6 Modbus connection 9 6 1 Modbus background 9 6 2 Modbus connections 9 7 Modbus tables 10 7 1 Modbus registers 10 7 2 Discrete Inputs 10 7 3 Coils 10 7 4 Input registers 10 7 5 Holding registers 11 ...

Page 7: ...ork 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 ...

Page 8: ... This data is then available to external devices through the RS 485 port using the Modbus RTU software protocol Values can be read and changed via this connection Please refer to the Modbus section for further information The A1M is powered from the indoor unit when connected via the CN105 CN92 connector hence no external power supply is needed Caution MAC 397IF and MAC 399IF units cannot be conne...

Page 9: ...n A1M connected to the same RS 485 network must be set to a unique address 3 2 Baud rate The baud rate can be set to values from 1200 up to 115200 baud using DIP switches 6 8 as follows Baud rate Switch 6 Switch 7 Switch 8 1200 OFF OFF OFF 2400 ON OFF OFF 4800 OFF ON OFF 9600 ON ON OFF 19200 OFF OFF ON 38400 ON OFF ON 57600 OFF ON ON 115200 ON ON ON 3 3 Other communication settings All other commu...

Page 10: ...oller PCB As an example Figure 2 shows this connection on a Mr Slim indoor unit 4 2 Power supply The Procon A1M is powered from the CN105 CN92 connector and hence does not require an external power supply 4 3 Modbus connections The Procon A1M has a 3 way screw terminal to provide Modbus RTU communication via RS 485 Figure 1 shows the RS 485 connections The Modbus section contains further detail of...

Page 11: ...tes valid communication with the indoor unit LED2 Green Lit when A1M is powered flashing indicates valid Modbus communication Please note if one or both of the LEDs are permanently on this indicates that the Procon A1M is powered successfully but no communication traffic is present In this case please check the Slave ID settings and ensure the CN105 CN92 connector is seated correctly ...

Page 12: ... bus Each Slave device must have a unique ID on the bus which is referred to as a Slave ID Each Modbus command the Master sends will contain this Slave ID and only the Slave with that Slave ID will reply 6 2 Modbus connections For communication over RS 485 all 3 connections are needed These are labelled A B and GND Please refer to the connection diagrams below Caution The RS 485 cable must be a sh...

Page 13: ...ssible register used for status information which holds a 16 bit value 0 65535 7 2 Discrete Inputs This device has no Discrete Inputs 7 3 Coils Coils are read using function code 01 and written to using either function code 05 or 15 Function code 05 is used when writing to a single coil register function code 15 is used for writing to multiple coil registers in the same command Coils Digital Outpu...

Page 14: ...ils Drive Mode 0 1 0x01 Heating 0x02 Humidity reduction 0x03 Cooling 0x07 Ventilation clean air operation 0x08 Auto Operation 0x09 i see heating operation 0x0A i see humidity reduction 0x0B i see cooling indicates a read only value writing this value will have no effect Temperature Setpoint in C 1 1 Holds a temperature value in C multiplied by 10 E g a value of 200 20 C Fan Speed 2 1 0x00 Auto 0x0...

Page 15: ...Page 12 of 12 ...

Page 16: ...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 HERTFORDSHIRE AL10 8XB ...

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