CONTROL BLOCK DIAGRAM. Toshiba RAV-SM560 BT-E, RAV-SM560 XT-E, RAV-SM560 KRT-E, RAV-SM800 AT-E, RAV-SM800 KRT-E, RAV-SM800 BT-E, RAV-SM800 XT-E, RAV-SM560 UT-E, RAV-SM560 AT-E, RAV-SM800 UT-E

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8. CONTROL BLOCK DIAGRAM

8-1. Indoor Control Circuit

Max. 8 units are connectable.*1

*1 Max. 7 units when network adapters

are attached

*2 Network adapters are attached to only

one unit.

*3 Weekly timer is not connectable to the

sub remote controller.

Central control remote controller

(Option)

Main (Sub) master remote controller

Display

LCD

Display

LED

CPU

Remote controller communication circuit

Function setup

Key switch

DC5V

Power circuit

CN2 CN1

* 3

Weekly timer

Display

LCD

LCD driver

Power circuit

DC5V

CPU

Secondary battery

Option

Y

X

Indoor unit

#1

Network adapter (Option)

Network adapter

P.C. board

(MCC-1401)

Remote controller communication circuit

AI NET communication circuit

DC5V

Power circuit

CPU

H8/3687

Switch setup

Indoor control P.C. board (MCC-1402)

DC20V

DC12V

DC5V

A B

Remote controller communication circuit

EEPROM

Humidifier relay output

Heater relay output

Driver

CPU

H8/3039

TA sensor

TC sensor

TCJ sensor

Function setup

Key switch

Option

#2

A B

#3

A B

Same as the left

*

2

Same as the left

*

2

Transformer

Float input

Louver motor

Drain pump

Indoor fan motor

DC280V

Power circuit

CPU

TMP88CH

47FG

(TMP88PH

47FG)

Fan motor control circuit

Outside output

Run

Warning

Ready

Thermo. ON

Cool

Heat

Fan

AC synchronous signal input circuit

Serial send/ receive circuit

1 2 3 1 2 3

Outdoor unit

Outdoor unit

1 2 3

1 2 3

Outdoor unit

Optional only for 4-way air discharge cassette type models

Wireless remote controller kit

Sensor P.C. board (MCC-1418)

Power circuit

DC5V

Remote controller communication circuit

Buzzer

CPU

Temporary operation SW

Function setup SW

Receive circuit Display LED

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8-2. Control Specifications

No.

1

Item

When power supply is reset

Outline of specifications

1) Distinction of outdoor units

When the power supply is reset, the outdoors are distinguished, and control is exchanged according to the distinguished result.

2) Setting of speed of the indoor fan/setting whether to adjust air direction or not.

(Only 4-way models)

Based on EEPROM data, speed of the indoor fan or setting whether to adjust air direction or not is selected.

Remarks

Air speed/

Air direction adjustment

2 Operation mode selection

1) Based on the operation mode selecting command from the remote controller, the operation mode is selected.

Remote controller command

STOP

FAN

COOL

DRY

HEAT

AUTO

Outline of control

Air conditioner stops.

Fan operation

Cooling operation

Dry operation

Heating operation

• COOL/HEAT operation mode is automatically selected by Ta and Ts for operation.

Ta

( C)

+1.5

COOL

(COOL ON)

Tsc or Tsh

(COOL OFF)

-1.5

HEAT

1) Judge the selection of COOL/HEAT mode as shown in the figure above.

When 10 minutes passed after thermostat had been turned off, the heating operation (Thermo

OFF) is exchanged to cooling operation if Tsh exceeds +1.5 or more.

(COOL OFF) and (COOL ON) in the figure indicate an example.

When 10 minutes passed after thermostat had been turned off, the cooling operation (Thermo

OFF) is exchanged to heating operation if Tsc exceeds –1.5 or less.

2) For the automatic capacity control after judgment of

COOL/HEAT, refer to item 4.

3) For the temperature correction of room temperature control in automatic heating operation, refer to item 3.

Ta : Room temperature

Ts : Setup temperature

Tsc : Setup temperature in cooling operation

Tsh : Setup temperature

+ Room temperature control temperature compensation

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No.

3

Item

Room temperature control

Outline of specifications

1) Adjustment range Remote controller setup temperature (°C)

COOL/

DRY

Heating operation

Auto operation

Wired type

Wireless type

*

18 to 29

18 to 30

18 to 29

16 to 30

18 to 29

17 to 27

*

: Only for 4-way air discharge cassette type

2) Using the item code 06, the setup temperature in heating operation can be compensated.

Setup data

Setup temp.

compensation

0

+0°C

2

+2°C

4

+4°C

6

+6°C

Setting at shipment

Setup data 2

Remarks

Shift of suction temperature in heating operation

4 Automatic capacity control

(GA control)

1) Based on the difference between Ta and Ts, the operation frequency is instructed to the outdoor unit.

5 Air speed selection

1) Operation with (HH), (H), (L), or [AUTO] mode is performed by the command from the remote controller.

2) When the air speed mode [AUTO] is selected, the air speed varies by the difference between Ta and Ts.

HH > H > L > LL

<COOL>

Ta ( C)

+3.0

+2.5

+2.0

+1.5

+1.0

+0.5

Tsc

-0.5

HH

(HH)

H (HH)

H (HH)

L(H)

L(H)

L(H)

L(L)

A

B

C

D

E

F

G

• Controlling operation in case when thermo of remote controller works is same as a case when thermo of the body works.

• If the air speed has been changed once, it is not changed for 3 minutes. However when the air volume is exchanged, the air speed changes.

• When cooling operation has started, the air speed selects a downward slope, that is, the high position.

• If the temperature is just on the difference boundary, the air speed does not change.

• Mode in the parentheses indicates one in automatic cooling operation.

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No.

5

Item

Air speed selection

(Continued)

Outline of specifications Remarks

<HEAT>

Ta ( C)

(-0.5)

–

1.0

(0) Tsh

(+0.5) +1.0

(+1.0)

+2.0

(+1.5) +3.0

(+2.0) +4.0

L(L)

L(H)

H(H)

H

(HH)

HH

(HH)

E

D

C

B

A

Value in the parentheses indicates one when thermostat of the remote controller works.

Value without parentheses indicates one when thermostat of the body works.

•

If the air speed has been changed once, it is not changed for 1 minute. However when the air speed is exchanged, the air speed changes.

•

When heating operation has started, the air speed selects a upward slope, that is, the high position.

•

If the temperature is just on the difference boundary, the air speed does not change.

•

Mode in the parentheses indicates one in automatic heating operation.

•

In Tc

≥

60

°

C, the air speed increases by 1 step.

<Operation of duct only>

Standard High ceiling

Tap

COOL HEAT COOL HEAT

UL

L

L+

M

M+

H

UL

L

L+

M

M+

H

UL

L

L+

H

UL

L

L+

M+,M M+,M

H

F7

F6

F5

F4

F3

F2

F1

FD

FD

FB

FA

F9

F8

SM560 SM800

Revolutions per minute (rpm)

320

320

330

320

330

340

350

360

370

400

410

420

360

370

380

410

440

450

440

480

530

580

480

500

540

580

Tc: Indoor heat exchanger sensor temperature

3) In heating operation, the mode changes to [UL] if thermostat is turned off.

4) If Ta

≥

25

°

C when heating operation has started and when defrost operation has been cleared, it operates with HIGH (H) mode or (HH) for 1 minute from when Tc has entered in E zone of cool air discharge preventive control (Item 6).

5) In automatic cooling/heating operation, the revolution frequency of [HH] is set larger than that in the standard cooling/heating operation. However the revolution frequency is restricted in the automatic heating operation as shown in the following figure.

[PRE-HEAT] display

Tc

( C)

47

42

F5 F4

F5

–

41

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No.

6

Item

Cool air discharge preventive control

Outline of specifications Remarks

1) In heating operation, the indoor fan is controlled based on the detected temperature of Tc sensor or Tcj sensor.

As shown below, the upper limit of the

Tc

Tcj

( C)

32

HH revolution frequency is determined.

30

H

L

E zone

28

UL

D zone

26

OFF

20

16

C zone

B zone

A zone

In D or E zone, the priority is given to setup of air volume exchange.

In A and B zones,

[PRE-HEAT] is displayed.

7 Freeze preventive control

(Low temperature release)

1) The cooling operation (including Dry operation) is performed as follows based on the detected temperature of Tc sensor or Tcj sensor.

When [J] zone is detected for 6 minutes (Following figure), the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [J] zone.

In [K] zone, time counting is interrupted and the operation is held.

When [I] zone is detected, the timer is cleared and the operation returns to the normal operation.

If the commanded frequency becomes S0 because the operation continues in [J] zone, the return temperature

A is raised from 5

°

C to 12

°

C until [I] zone is detected and the indoor fan operates with [M] mode.

( C)

5 I A

K

Tcj : Indoor heat exchanger sensor temperature

2

J

8

In heating operation, the freeze-preventive control works if 4-way valve is not exchanged and the condition is satisfied. (However the temperature for J zone dashing control is changed from 2

°

C to

–

5

°

C.)

High-temp release control

1) The heating operation is performed as follows based on the detected temperature of Tc sensor or Tcj sensor.

•

When [M] zone is detected, the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [M] zone.

•

In [N] zone, the commanded frequency is held.

•

When [L] zone is detected, the commanded frequency is returned to the original value by approx.

6Hz every 60 seconds.

Setup at shipment

Control temp (°C)

A B

Tc ( C)

Tcj

A

M

N

56 (54) 52 (52)

B

L

NOTE :

When the operation has started or when Tc or Tcj became lower than 30

°

C after start of the operation, temperature is controlled between values in parentheses of A and B.

Same when thermostat is turned off.

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No.

9

Item Outline of specifications

Drain pump control

(For the duct, when the drain-up kit

(sold separately) is mounted)

1) In cooling operation (including Dry operation), the drain pump is usually operated.

2) If the float switch operates while drain pump operates, the compressor stops, the drain pump continues the operation, and a check code is output.

3) If the float switch operates while drain pump stops, the compressor stops and the drain pump operates. If the float switch keeps operating for approx.

4 minutes, a check code is output.

Remarks

Check code [P10]

10 After-heat elimination

When heating operation stops, the indoor fan operates with LOW mode for approx. 30 seconds.

11 Flap control

(For 4-way air discharge cassette type only)

1) Flap position setup

• When the flap position is changed, the position moves necessarily to downward discharge position once to return to the set position.

• The flap position can be set up in the following operation range.

In cooling/dry operation In heating/fan operation

• In group twin/triple operation, the flap positions can be set up collectively or individually.

2) Swing setup

• The swinging position can be moved in the following operation range.

All modes

• In group twin/triple operation, the swinging positions can be set up collectively or individually.

3) When the unit stops or when a warning is output, the flap automatically moves downward.

4) While the heating operation is ready, the flap automatically moves upward.

Warning :

A check code is displayed on the remote controller, and the indoor unit stops.

(Excluding [F08] and

[L31])

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No.

Item

12 Frequency fixed operation

(Test run)

Outline of specifications

<In case of wired remote controller>

1. When pushing [CHECK] button for 4 seconds or more,

[TEST] is displayed on the display screen and the mode enters in Test run mode.

2. Push [ON/OFF] button.

3. Using [MODE] button, change the mode from [COOL] to [HEAT].

•

Do not use other mode than [COOL]/[HEAT] mode.

•

During test run operation, the temperature cannot be adjusted.

•

An error is detected as usual.

•

A frequency fixed operation is performed.

4. After the test run, push [ON/OFF] button to stop the operation. (Display in the display part is same as the procedure in item 1).)

5. Push [CHECK] button to clear the test run mode.

([TEST] display in the display part disappears and the status returns to the normal stop status.)

<In case of wireless remote controller>

(Option for 4-way air discharge cassette type only)

1. Turn off the power of the set.

Remove the adjuster with sensors from the ceiling panel.

2. Turn Bit [1: TEST] of sensor P.C. board switch [S003] from OFF to ON.

Attach the sensor P.C. board cover and mount the adjuster with sensors to the ceiling panel.

Turn on the power of the set.

3. Push [ON/OFF] button of the wireless remote controller and set the operation mode to [COOL] or [HEAT] using

[MODE] button.

(During test run operation, all the display lamps of wireless remote controller sensors flash.)

•

Do not use other mode than [COOL]/[HEAT] mode.

•

An error is detected as usual.

•

A frequency fixed operation is performed.

4. After the test run, push [ON/OFF] button to stop the operation.

5. Turn off the power of the set.

Turn Bit [1: TEST] of sensor P.C. board switch [S003] from ON to OFF.

Mount the adjuster with sensors to the ceiling panel.

Remarks

13 Filter sign display

(Except wireless type)

1) The operation time of the indoor fan is calculated, the filter reset signal is sent to the remote controller when the specified time (2500H) has passed, and it is displayed on LCD.

2) When the filter reset signal has been received from the remote controller, time of the calculation timer is cleared. In this case, the measurement time is reset if the specified time has passed, and display on LCD disappears.

[FILTER] goes on.

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No.

14

15

Item

Central control mode selection

Energy-save control

(By connected outdoor unit)

16 Max. frequency cut control

Outline of specifications

1) Setting at the central controller side enables to select the contents which can be operated on the remote controller at indoor unit side.

2) RBC-AMT21

[Last push priority] :

The operation contents can be selected from both remote controller and central controller of the indoor unit side, and the operation is performed with the contents selected at the last.

[Center] :

Start/Stop operation only can be handled on the remote controller at indoor unit side.

[Operation Prohibited] :

It cannot be operated on the remote controller at indoor unit side. (Stop status is held.)

Remarks

(No display)

[CENTER] goes on.

[CENTER] goes on.

In a case of wireless type, the display lamp does not change.

However, contents which can be operated are same.

The status set in [CENTER]/

[Operation Prohibited] mode is notified with the receiving sound

“

Pi, Pi, Pi, Pi, Pi

”

(5 times).

1) Selecting [AUTO] mode enables an energy-saving to be operated.

2) The setup temperature is shifted (corrected) in the range not to lose the comfort ability according to input values of various sensors.

3) Data (Input value room temp. Ta, Outside temp. To, Air volume, Indoor heat exchanger sensor temp. Tc) for

20 minutes are taken the average to calculate correction value of the setup temperature.

4) The setup temperature is shifted every 20 minutes, and the shifted range is as follows.

In cooling time : +1.5 to

–

1.0K

In heating time :

–

1.5 to +1.0K

1) This control is operated by selecting [AUTO] operation mode.

2) COOL operation mode: the frequency is controlled according to the following

Ta( C) Normal control

+4 figure if

To < 28

°

C.

+3

Max. frequency is restricted to approximately the rated cooling frequency

Tsc

3) HEAT operation mode: the frequency is controlled according to the right

Ta( C)

Tsh figure if

To > 15

°

C.

–

3

Max. frequency is restricted to approximately the rated heating frequency

–

4

Normal control

17 DC motor

(For 4-way air discharge cassette type only)

1) When the fan operation has started, positioning of the stator and the rotor are performed.

(Moves slightly with tap sound)

2) The motor operates according to the command from the indoor controller.

NOTES :

•

When the fan rotates while the air conditioner stops due to entering of outside air, etc, the air conditioner may operated while the fan motor stops.

•

When a fan locking is found, the air conditioner stops, and an error is displayed.

Check code [P12]

–

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DC fan output

Microcomputer operation LED

EEPROM

Network adapter power supply

Indoor/Outdoor inter-unit cable

DC fan return

Float SW

Louver

Optional output

TA sensor

CHK

DISP

EXCT

TC sensor

Outside error input

TCJ sensor

Remote controller power LED

Remote controller inter-unit cable www.ilmalämpöpumput.com

Drain pump output

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Indoor/Outdoor inter-unit cable

Power transformer output

Power transformer input (AC11V,14V,20V)

Microcomputer operation LED

Louver

Drain pump output

Network adapter power supply

Fan output EXCT Float SW

TA sensor

TCsensor

TCJ sensor

Outside error input

Remote controller inter-unit cable

CHK

DISP www.ilmalämpöpumput.com

Remote controller power LED

HA

Optional output