background image

– 3 –

1-3. Parts list

The package contains the following parts.

1-4. Product specifications

1. Specifications

*1 Not for use with a generic DC power supply device. Use the power supply unit for transmission line (PAC-SC51KUA etc.) by Mitsubishi.
*2 "Power consumption Coefficient" is a coefficient to calculate the relative power consumption of the devices that receive power through the M-NET 

transmission line. Refer to the note at the end of section 1-5 "System diagram."

2. Unit Components and Functions

1-5. System diagram

1. System configuration

*1 ISO metric screw thread

Power source

30VDC *1 
(for connection to M-NET only)

Receives power from the power supply unit for transmission line or 
from outdoor units via the M-NET transmission cable. The power 
consumption coefficient*2 of AT-50A is "4."

Operating conditions

Temperature

Operating temperature range

0˚C~40˚C [32˚F~104˚F]

Storage temperature range

-20˚C~+70˚C [-4˚F~+158˚F]

Humidity

30%~90%RH (Non-condensing)

Weight

0.5 kg [1-1/8 lbs.]

External dimensions (W x H x D)

180 x 120 x 30 mm  7-3/32 x 4-23/32 x 1-3/16 in

Front (with the cover on)

Front (cover off)

Back

Bottom

Parts

Qty.

1.

AT-50A

1

2.

Mounting bracket

1

3.

M4.1 wood screws × 16 *1 (Use to attach the mounting bracket to a wall.)

4

4.

M4 Roundhead cross slot screws × 30 *1 (Use to attach the mounting bracket to an electric box.)

2

5.

M4 roundhead screws with spring washers/washers × 20
(Use to attach the mounting bracket to the controller.) *1

2

6.

Installation Manual (This manual)

1

7.

Instruction Book

1

8.

CD-ROM (Instruction Book, Installation Manual)

1

2. Mounting bracket

1. AT-50A

Power LED

Touch panel

For connection to the M-NET 
(A, B: Terminal for connection to 
the M-NET cable [non-polarized])

External output 
adapter cable 
access hole

External input 
adapter cable 
access hole

Controller cover 
mounting screw

SD memory slot 
(for program updates)

TB7

TB3

ME

MA

MA

R2

TB7

TB3

MA

MA

[051]

[001]

[106]

[006]

[007]

[008]

[009]

[010]

[056]

[057]

[002]

[003]

[004]

[005]

[11]

[12]

[13]

[14]

M-NET

Main SC

Advanced Touch 

Controller

*1

 Model: 

AT-50A [201]

Power supply unit for transmission cable 
(sold separately)
Model: PAC-SC51KUA

Outdoor unit

M-NET

Group 1

M-NET
Outdoor unit

Group 2

Indoor unit

Local remote controller

M-NET transmission cable

MA remote controller cable

Numbers in the parentheses indicate address 
numbers.

Note:

• The figure at left only shows the 

transmission line connections. 
Power supply lines are omitted.

• Provide a single ground point 

(class D) by grounding the shield 
wire of the M-NET centralized 
controller transmission cable at 
one of the power supply units. 
Provide a ground point for the 
indoor-outdoor transmission 
cable for each outdoor unit.

• Make sure that the centralized 

control switch (SW2-1) on the 
outdoor unit connected to the M-
NET cable is set to ON.
Refer to the outdoor unit 
Installation Manual for detailed 
information about dip switch 
settings.

BC controller

Group 3

Group 6

Group 4

Group 5

M-NET 
adapter

LOSSNAY 

unit

Outdoor 

unit

ON/OFF remote controller 

Model: PAC-YT40ANRA

[202]

Mr. Slim

®

 

outdoor unit

Mr. Slim

®

 

outdoor unit

M-NET 

Interface

MXZ

Summary of Contents for AT-50A

Page 1: ...ctric shock malfunctions smoke or fire do not operate the switches buttons or touch other electrical parts with wet hands To reduce the risk of injury or electric shock before spraying a chemical around the controller stop the operation and cover the controller To reduce the risk of injury or electric shock stop the operation and switch off the power supply before cleaning maintaining or inspectin...

Page 2: ...ical noise interference To reduce the risk of electric shock shorting or malfunctions keep wire pieces and sheath shavings out of the terminal block To reduce the risk of shorting current leakage electric shock or malfunctions keep the cables out of contact with controller edges To reduce the risk of electric shock malfunctions or fire seal the gap between the cables and cable access holes with pu...

Page 3: ...e controller 1 2 6 Installation Manual This manual 1 7 Instruction Book 1 8 CD ROM Instruction Book Installation Manual 1 2 Mounting bracket 1 AT 50A Power LED Touch panel For connection to the M NET A B Terminal for connection to the M NET cable non polarized External output adapter cable access hole External input adapter cable access hole Controller cover mounting screw SD memory slot for progr...

Page 4: ...or units apply An M NET interface sold separately is required 1 50 M NET remote controller Assign an address that equals the address of the main indoor unit with the lowest address in the group plus 100 Add 150 instead of 100 to set a sub remote controller 101 200 Sub system controller Assign an address that equals the lowest number of the group to be controlled plus 200 201 250 DIDO PAC YG66DCA A...

Page 5: ...nsure the M NET transmission cables and external input output cables are long enough to reach the controller Have extra cables to extend these cables as necessary To install the controller according to the instructions provided in sections a and b 1 above Include an extra 30 cm 12 in of cable to provide adequate slack in the cable Remove the sheath on the M NET transmission cable up to 20 cm 8 in ...

Page 6: ...the terminal block M NET transmission cable is non polarized Insert the cables in the groove on the controller so they will not be pinched when the cover is installed To route the cable along the wall surface Secure the cables in place with a cable cover and seal the gap between the cable cover and the controller with putty 5 Replace the cover Snap the cover into place and attach it to the control...

Page 7: ...ue between 0 2 and 1 seconds 4 Sample circuit recommended Mode External input signal setting Notes 1 Do not use external input Factory setting 2 Emergency stop Normal operation signal level signal When the units are not operating after receiving an emergency stop signal the ON OFF operation from the local remote controller will not be allowed and the ON OFF and Prohibit Permit settings on the AT 5...

Page 8: ...during operation The maximum length of extension cable is 10 m 32 ft Use a cable of 0 3 mm 22AWG or thicker Insulate the area with vinyl tape where the controller cable and the extension cable are connected Relays lamps diode extension cables are field supplied Note The AT 50A has a slot for an SD memory card at the bottom that can be used to update software Refer to the Installation Manual for th...

Page 9: ... ON OFF Mode Set Temp and Filter Reset 12 External input mode Selects the external input mode 12 Filter sign Displays or suppresses the Filter sign on the HOME screen 12 Dry mode Includes or excludes Dry mode as an option for the operation mode 12 Set temperature range Schedule Selects the settable temperature range Standard 19 C 67 F to 28 C 83 F Low 8 C 46 F to 30 C 87 F Manual Settable to any a...

Page 10: ...enu Touch or HOME screen GRID zoom out view GRID zoom in view LIST view GROUP view Main Menu screen Login Page screen 1 Password Change screen Service Menu Service Menu screen Initial settings 1 Basic system Initial settings 2 Groups Groups Interlocked LOSSNAY Delete All System view Malfunction log Gas Amount Check Maintenance Test run Software update Button name Main Menu Service Menu Password Ch...

Page 11: ...begin the communication g The message shown above will appear on the screen displaying the initialization progress When initialization is complete the screen will automatically return to the HOME screen Initialization will take up to five minutes To change settings later perform a test run or verify the maintenance information 1 Touch MAIN MENU button on the HOME screen 2 Touch SERVICE MENU button...

Page 12: ...o ON OFF Mode Set Temp and Filter Reset External Input Mode 1 Press the External Input setting button labeled 1 in the figure to select between Not used Emergency Stop Level signal ON OFF Level signal and ON OFF Prohibit Permit Pulse signal Refer to the Installation Manual for detailed information on how to connect the AT 50A to external devices Filter Sign Display 1 Press the Filter Sign Display ...

Page 13: ...up Indoor units LOSSNAY units and general equipment cannot be combined in one group General equipment groups cannot include remote controller or system controllers Touch Page turn button to turn the pages and follow the directions below to make the settings for each group Group Name 1 Touch the Group Name Input button labeled 1 in the figure and enter the group name in the screen up to 16 characte...

Page 14: ...he Initial Settings 2 Groups button on the Service Menu and then touch the Interlocked LOSSNAY button on the Initial Settings 2 Groups screen to access the Interlocked LOSSNAY screen 1 Touch the LOSSNAY button labeled 1 in the figure On the popup window that appears check the address of the ventilation units to be interlocked with the operation of the indoor units 2 Touch the Interlocked indoor un...

Page 15: ...at support the test run function 2 Operation mode Touch this button to switch the operation mode 3 Pipe temperature The pipe temperature of the indoor unit with the lowest address in a given group will appear 4 Advanced settings Touch this button for advanced settings Display Function A Indoor temperature Indoor air temperature will appear B Unit address up down arrows Use the up down arrows to se...

Page 16: ... OK button If the message The DIP switch 4 is set to OFF appears check to make sure that the DIP switch 4 is turned to ON The DIP switch is located at the left bottom of the controller under the cover 4 Touch the OK button on the confirmation screen 5 Touch the OK button on the popup message to begin the update process 6 The lit LEDs on the three buttons F1 F2 and Collective ON OFF will indicate a...

Reviews: