Instruction Manual

MEX-350RA

(K-5H) Hospital Control

MECHATRONICS SYSTEM TECHNOLOGY

CONTENTS

1.Product Components	05

2.Basic Specification	06

3.Controller Function	07

4.Product Specification	08

5.Product Overview	09

□Monitor appearance and password input method	9

□Page composition	9

□Boot screen	10

□Main screen	10

□Setting screen	11

▮5-1.Basic operation setting	12

▮5-2.Alarm setting	13

▮5-3.Schedule setting	14

▮5-4.Extended operation setting	14

▮5-5.Device preferences	16

▮5-6.Error correction setting	17

▮5-7.Other settings	17

▮5-8.Hidden settings	18

□Input/ output information screen	19

□Alarm screen	20

6.Auto setting value according to room change	21

7.Inspection method for abnormalities	22

8.Product warranty	23

Installation and Safety Precautions

Please be sure to read this information before use.

The precautions listed are to prevent the risk of accidents and property damage

caused by misuse of the product and to enable the user to use the product safely.

※ Warning: Indicates that there is a possibility of serious injury or death to the user

and must be observed.

Warning

	MECHATRONICS SYSTEM TECHNOLOGY

Do not perform maintenance or inspection while power is applied. (It may cause an

electric shock.)

Be careful not to let foreign objects such as wire, welding, or iron pieces get inside the product. (It may cause fire, electric shock and product malfunction. If water or liquid gets in contact, discontinue use immediately and wipe wet areas with a cotton swab or contact our headquarters.)

Electrical work should be performed by a qualified electrician who knows the wiring precautions correctly. (There is risk of electric shock and fire.)

Do not disassemble, repair or modify the product arbitrarily except by A/S personnel. (It may cause electric shock and product damage. Please inquire at our head office if you find any abnormalities.)

Do not use a load that exceeds the rated capacity of the switching capacity of relay contacts. (Be sure to use the rated value allowed by our company. It may cause malfunction.)

Do not install in the same panel as the high voltage equipment.

Maintain a distance of 50 mm or more from the wiring duct and peripheral modules.

In places where there is a great danger to human life or property, be sure to install

a double safety device and install it on a non-combustible material such as metal.

※ Caution : Indicates that there is a possibility of minor injury or damage to the

product that requires caution in handling.

Caution

Do not apply strong impact to the product. (Doing so may damage the product or

cause it to malfunction.)

Avoid places where there is high temperature, high humidity, condensation, dust,

corrosive gas, explosive gas, flammable gas, salt, and install in a room with good

ventilation without direct sunlight. (This may shorten the life of the product and cause malfunction.)

Wiring the input / output wiring together with high-voltage line or power line may

cause induction fault, which may cause malfunction or failure.

Install the controller and other devices (relays, inverters, magnetic contactors) at a

distance to avoid the effects of radiation noise and heat. (When there is concern of

noise penetration, use an insulation shield transformer or noise filter.)

This controller performs noise measures and can be used without grounding except

when there is a lot of noise in particular.

※ However, please note the following when grounding.

- Separate from other equipment grounding conductors and ground.

- Use of a dedicated ground is recommended.

(If you can not make a dedicated ground, please use a common ground.)

- Grounding work should be grounding type 3 (ground resistance less than 100Ω).

- Observe the facility standards of each country.

Firmly connect all cable connectors to the terminals. (Loose connections can cause

incorrect input or output.)

The screw on the terminal block must be tightened tightly, and a torque specification

of 0.5 to 0.6 Nm is recommended. (Failure to tighten the screws may cause a short

circuit, fire, product failure or malfunction.)

RS485 communication line is recommended to use 485 communication line. (It may

cause noise or malfunction when using normal wires.)

It is recommended to use shield cable for temperature sensor connection such as

NTC or PT100. (Using a normal wire may cause malfunction, and the correct

temperature value may not be displayed.)

※ When disposing of this product, it must be disposed of in accordance with the

national industrial waste logistics regulations.

General Safety Precautions

www.msti.co.kr

Do not hit the product with a hard object or press it too hard. (This may damage the product.)

Do not install the product in an area exceeding the allowable temperature. (This may damage the product or shorten its life.)

Do not use the product in a place where the temperature changes greatly or sharply. (The product may be damaged by dew inside the product.)

Be careful not to let water, liquid, metal, or electric charges into the product. (This may damage the product or cause electric shock.)

Do not use or store in direct sunlight, dusty or dirty places.

Do not use or store in a place subject to severe vibration.

Do not use or store in a place where chemicals or oxidizing materials are evaporated or contained in the air.

Do not wipe with paint thinner or solvent.

Do not store or operate the LCD in direct sunlight. The ultraviolet rays of the sun may degrade LCD display quality.

Be sure to keep the LCD monitor within the allowed temperature range.

When storing the product at a temperature lower than the allowable value, the LCD liquid may condense and damage the LCD.

If the product is stored at a temperature higher than the allowed value, the liquid may become isotropic and may not be reduced.

Be sure to wait a few seconds until you turn off the product and turn it back on again. If you turn on the power too soon, the product may not start normally.

1.Product Components

K-5H  MEX-350RA

• Actual components may differ from photographs and, in some cases, some items

may change.

• If you purchased the product and the following components are not included, please contact the place where you purchased the product.

Main Body (It could be different from the actual equipment)	Monitor Cable	Sensor Cable
	Instruction Manual

Basic Configuration

Key Touch Monitor – Horizontal Type  (K-5H)

Monitor

Room Sensor (SP-REC)	Indicator Sensor (SP-INC)	Wall Sensor (SP-WEC)

Selection) Sensor

2.Basic Specification

∎ Instruction Manual

1) Communication specifications (system bus, local bus common)

- Communication method : RS-485

- Communication speed : 9600BPS, N, 8.1

- Communication protocol : MODBUS RTU MODE

2) Construction (Cable configuration)

Conductor	bare copper strands
Insulation	PE(polyethylene)
Core code	with reference to DIN 47100
Stranding	2core twisted to pairs
Pair screen	plastic coated metal foil and dopper drain wire
Wrapping	plastic foil
Screen	braid dopper wire
Sheath	PVC, acc.to DIN VDE 0207 part5
Sheath colour	grey (RAl 7032)

3) Technical Data

Peak operating voltage	240V
Testing voltage	C/C : 2000V
	C/S : 1000V
Min. bending radius	10 ˟ d
Radiation resistance	8 ˟ 107 cJ/kg
Impedance	0.22 ㎟ approx. 80 Ohm
	0.34㎟ approx. 85 Ohm
	0.5 ㎟ approx. 80 Ohm
	0.0 ㎟ approx. 75 Ohm
Capacitance	0.22 ㎟ max. 70 nF/㎞
	0.34 ㎟ max. 70 nF/㎞
	0.5 ㎟ max. 75 nF/㎞
	1.0 ㎟ max. 85 nF/㎞
	at 800Hz
Inductance	approx. 0.4mH/㎞
Temperature range	-30℃ to +70℃
Fire performance	IEC 60 332-1

※ Cable of this specification is recommended.

4) Main unit (MEX-350)

Processor		ATmega64
Input voltage		100 ~ 220VAC Free-voltage *Note1)50/60Hz
Output	Voltage	100 ~ 220VAC
	Relay capacity	250V / 3A(MAX)
	DO port	10 Ports
	AO port	3 Ports (0~10Vdc / 4-20mA:Load Max 500Ω)
Input	DI port	6 Ports
	AI port	2 Ports (4-20mA)
Communication	Method	RS-485, Modbus-RTU, (9600BPS, DATA 8, STOP1, PARITY NONE)
	Port	2 Ports (Monitor, sensor, external communication)

*Note1) 60Hz is the basic specification, 50Hz is the order specification.

5) Monitor (K-5H)

Processor	ADSTAR
Input voltage	DC 9 ~ 24V
Display	TFT 5“ 800×480
Communication	1Ports, RS-485 (Modbus-RTU)

6) Sensor

Processor	ATmega8
Input voltage	DC 9 ~ 24V
Communication	1Ports, RS-485 (Modbus-RTU)
Temperature and humidity range	-25.0 ~ 85.0℃ ±1.5℃ / 0 ~ 100.0 % ±4%

3.Controller Function

1) Protection of setting value: The setting value of the equipment is kept memorized even after power failure and power off.

2) Remote monitoring / control: All distributed RCU controllers can be monitored / controlled via CCU or PC.

3) Proportional output function: There are control points that can control with analog signal such as cooling, heating, damper, etc., so automatic / manual control is possible.

4) Proportional input function: It receives analog input signal such as temperature and humidity sensor value and pressure value from outside, and can control it with desired control value.

4.Product Specification

Main unit	Monitor
	*Cutting size: Horizontal 163×87 (mm)

Indicator sensor	Wall sensor
*Cutting Size : 75×110 (mm)
Room sensor
*Hole spacing: 60.5 (mm)

5.Product Overview

□ Monitor appearance and password input method

• The controller is designed as a horizontal type (K5H).

• Microprocessor-controlled self-diagnostics are built in and are designed for autonomous emergency action.

• Hidden settings are available on the setup screen to protect important settings from external users or non-administrators. (If you want to enter 'Hidden settings' on the setting screen, the password input popup window will be displayed, and)  keys must be used to enter the 4

digit password.

• How to enter password : If you touch the  key after inputting each digit, the number of digits is automatically moved and the corresponding digit value blinks. If you touch the  key in 1 digit, the password input is completed. To move the digit, use the  key.

Power key.

	Power key
	Up key
	Down key
	Select key (or Save key)
	Menu key (or Previous key)
	Special key (function per screen)

Tip. 1)  Only the available keys for each screen are activated.

2) Button descriptions are displayed on the top / bottom of each screen.

□ Page composition (Block diagram)

Main screen
		Setting screen
		Basic operation setting
		Alarm setting
		Schedule setting
		Extended operation setting
		Device preferences
		Error correction setting
		Other settings
		Hidden settings

□ Boot screen

1) When the power is first applied, the main unit data is downloaded.

※ While the power is on, the data of the downloaded main body will be kept and the boot loader will restart when power is turned on.

2) When data reception is completed, the main screen is displayed.

3) When data reception is not completed due to insufficient communication with the main body, the message 「Data request failed. Check cable.」is displayed and the data is continuously requested until it succeeds. (Please check monitor cable & sensor cable connection referring to the image below..)

	☜ Identical both ways ( Colors may change depending on the circumstances of the company )
	X-: Black X+: White G: Brown or Matte black V: Red
X- X+ G V

□ Main screen (=Operation screen)

※ The room picture and status display on the main screen will be automatically adjusted to the default of the room you set. (There are four main images, please refer to the figure below.)	Screen Layout ❶Current screen ❷Current time ❸Current day ❹Current temperature(℃) / Current humidity(%) ❺Current differential pressure (Pa/mmAq) ❻Fan speed / differential pressure mode setting ❼AO output status ❽Each device operation status -Animation behavior during operation -Display current step status ex) 1Step / 2Step

[Sample] General room screen	[Sample] Quarantine room screen

[Sample] Operating room screen	[Sample] Ancillary room screen

▮Fan speed / differential pressure mode change method

1) Touching the  key flashes the current speed display.

2) After changing the fan speed with the  key, touch the  key to complete the setting.

3) If you touch the  key, the current differential pressure display area flashes.

4) After changing the positive / negative pressure with the  key, touch the  key to complete the setting.

▮Disinfection / exhaust output method

1) When the disinfection time or exhaust time of the environment setting is set to '1' minutes or more

2) If the  key is touched for longer than 5 seconds, disinfection or exhaust output will be ON.

3) If the  key is touched again for more than 5 seconds in the output ON state, the exhaust output turns ON if disinfection is being output, and the output turns OFF if it is in exhaust output.

▮Go to setting screen: From the main screen, touch the  key.

▮Go to I / O status screen : From the main screen, touch the  key.

▮Go to alarm screen: In the I / O status screen, touch the  key.

▮Go to the main screen: On the setting screen / output status screen / alarm screen / totalization time screen, touch the  key.

□ Setting screen

[Sample] Setting screen	[Sample] Basic operation setting screen

▮Setting value change method

1) Touch the  key on the setting screen of the above picture to move to each setting screen.

2) After moving the menu to change using  key, touch the  key and the setting value will flicker.

3) Use the  key to change the value.

4) Save using  key. Touch the  key to exit the setting screen.

¶ A button description will be displayed at the bottom of each screen. Please refer to it for setting and operation.

▮5-1. Basic operation setting

NO	Item	Range	Default	Unit	ACCESS
(1)	Setting temperature	5.0~50.0	24.0	℃	General
(2)	Cooling deviation	0.1~10.0	1.0	℃	General
(3)	Heating deviation	0.1~10.0	1.0	℃	General
(4)	Positive pressure setting	0.00~4.00mmAq / 0.0~40.0Pa	2.00/20.0	mmAq/Pa	General
(5)	Negative pressure setting	-4.00~0.01mmAq / -40.0~0.1Pa	-2.00/-20.0	mmAq/Pa	General
(6)	Deadband +	0.01~1.00mmAq / 0.1~10.0Pa	0.10/1.0	mmAq/Pa	General
(7)	Deadband -	0.01~1.00mmAq / 0.1~10.0Pa	0.10/1.0	mmAq/Pa	General
(8)	Disinfection time	0~999 (0:Disabled=ban)	0	Min	General
(9)	Exhaust time	0~999 (0:Disabled=ban)	0	Min	General
(10)	Run delay	1~180	10	Sec	General
(11)	Stop delay	1~180	3	Sec	General

(1)Setting temperature : Set the reference temperature for operation of the cooler or heater.

(It can be set only when 'Temperature and humidity sensor mode' of Extended operation setting is set to 'Control'.)

(2)Cooling deviation: Sets the start of cooling operation and the deviation between the steps of COMP1 and COMP2.

• Current temperature> = Setting temperature+(Cooling deviation × 1); COMP 1 step operation

• Current temperature> = Setting temperature+(Cooling deviation × 2); COMP 2 step operation -> when Cooling step is 2 step

(3)Heating deviation: Sets the deviation between the start of the heating operation and the step 1 or 2 of the heater.

• Current temperature <= Setting temperature- (Heating deviation × 1); Heating 1 step operation

• Current temperature <= Setting temperature- (Heating deviation × 2); Heating 2 step operation -> when Heating step is 2 step

(4)~(5)Positive / negative pressure setting: Enter the desired differential pressure value for positive / negative pressure operation

(6)~(7)Deadband+ / Deadband- :

Sets the value for controlling the VAV analog output as a percentage.

VAV output = ((set differential pressure – current differential pressure) / set deviation) × 100 (%)

(8)Disinfection time: After disinfection operation for the set time during disinfection operation, it is automatically switched to exhaust operation. (Switch to disinfection operation [Disable] if '0' and [Normal operation] if exhaust operation is '0')

(9)Exhaust time: Return to normal operation after exhaust operation for the set time.

(Exhaust operation [Disable] in case of '0')

(10)Run delay: Set the delay time to prevent multiple devices from starting simultaneously when starting operation.

(11)Stop delay: Sets the delay time for releasing latent heat in the machine when the machine is stopped.

▮5-2. Alarm setting

NO	Item		Range	Default	Unit	ACCESS
(1)	High temperature alarm		0~99.9	Disable(0)	℃	General
(2)	Low temperature alarm		0~99.9	Disable(0)	℃	General
(3)	High limit alarm		-5.00~5.00mmAq / 50.0~50.0Pa	Disable(0)	mmAq/Pa	General
(4)	Low limit alarm		-5.00~5.00mmAq / -50.0~50.0Pa	Disable(0)	mmAq/Pa	General
(5)	Alarm delay		0~99	10	Sec	General
(6)	Alarm sound		Enable / Disable(=ban)	Enable	-	General
(7)	Input contact setting	Fan input contact	NO/NC	NC	-	General
		Filter input contact	NO/NC	NO	-
		Cooling input contact	NO/NC	NC	-
		Heating input contact	NO/NC	NC	-
		Remote input contact	NO/NC	NC	-

(1)~(4) : Set sensor related alarm value. (Set it to '0' if you do not want to use it.)

(5)Alarm delay : If the differential pressure sensor is disconnected / short-circuited, an alarm is generated after a delay check as much as the set value.

(6)Alarm sound : Set whether or not to use buzzer sound when an alarm occurs.

(7)Input contact setting : If the input contact is 'NO', if the contact is CLOSE, it is an alarm. If it is 'NC', if the contact is OPEN, it is an alarm.

▮5-3. Schedule setting

Set the machine operation / stop time by day of the week.

(Schedule operation will not proceed if the same operation time and stop time are specified.)

[Sample] Schedule setting screen

▮5-4. Extended operation setting

[Sample] Extended operation setting screen	[Sample] AO output mode setting - Popup window -

NO	Item	Range	Default	Unit	ACCESS
(1)	Return to power	1:ON / 0:OFF	ON	-	General
(2)	Temperature and humidity sensor mode	0:Disable(=ban), 1:Display, 2:Control	Display	-	General
(3)	Differential pressure 1 sensor mode	0:Disable(=ban), 1:Display, 2:Control	ban	bps	General
(4)	Differential pressure 2 sensor mode	0:Disable(=ban), 1:Display	ban	-	General
(5)	Differential pressure unit	0:mmAq, 1:Pa	mmAq	bps	General
(6)	Equipment number	1~128	2	-	General

NO	Item		Range	Default	Unit	ACCESS
(7)	AO output mode setting	AO1 Output mode	0:Disable(=ban), 1:AutomaticSA, 2:Cooling, 3:Heating, 4:ManualSA, 5:Manual	Manual SA	-	General
		AO1 Manual output	0~100	0	%	General
		AO2 Output mode	0:Disable(=ban), 1:AutomaticEA, 2:Cooling, 3:Heating, 4:ManualEA, 5:Manual	Autom aticEA	-	General
		AO2 Manual output	0~100	0	%	General
		AO3 Output mode	0:Disable(=ban), 1:FAN, 2:Cooling, 3:Heating, 4:Manual	Manual	-	General
		AO3 Manual output	0~100	0	%	General
(8)	AO range setting	AO1 Range setting	0: 4~20, 1: 0~20	4~20	mA	General
		AO2 Range setting	0: 4~20, 1: 0~20	4~20	mA	General
		AO3 Range setting	0: 4~20, 1: 0~20	4~20	mA	General

(1)Rerurn to power function setting: It sets whether to start or stop the equipment before returning from power failure.

(2)Temperature and humidity sensor mode: Set whether to display / control / disable the temperature / humidity mode.

(3)Differential pressure 1 sensor mode: Sets whether to display / control / disable the differential pressure mode.

(4)Differential pressure 2 sensor mode: Sets whether to display / disable the auxiliary differential pressure mode.

(5)Differential pressure unit: Sets the differential pressure unit to be used between mmAq / Pa.

(6)Equipment number: Sets the ID to be applied when using external communication.

(7)AO Output mode: Sets the purpose of each AO port of controller.

If set to [Manual], you can specify the output value by using each manual output menu.

※ The difference between [Manual SA] and [Manual], [Manual EA] and [Manual] is the display difference.

※ If both [Automatic SA] and [Manual EA] are used, it operates as inverse control.

(8) AO Range setting: Sets the analog output range.

▮5-5. Device preferences

NO	Item	Range	Default	Unit	ACCESS
(1)	Room type	0: General, 1: General room, 2: Operation room, 3: Quarantine room	General	-	General
(2)	Fan type	0: Disable(=ban), 1: 2 Step, 2: 3 Step, 4: Proportional, 5: Communication	3Step	-	General
(3)	Low speed fan voltage	0~5.0	1.0	V	General
(4)	Medium speed fan voltage	0~5.0	2.0	V	General
(5)	High speed fan voltage	0~5.0	3.0	V	General
(6)	Cooling step	0: OFF, 1~2: Step, 3: Proportional	OFF	-	General
(7)	Heating step	0: OFF, 1~2: Step, 3: Proportional	OFF	-	General
(8)	Air supply minimum valve opening rate	0~100	0	%	General
(9)	Air supply maximum valve opening rate	0~100	100	%	General
(10)	Exhausting minimum valve opening rate	0~100	0	%	General
(11)	EExhausting maximum valve opening rate	0~100	100	%	General
(12)	Contact mode	0: Door open contact, 1: Remote contact	1	-	General

(1)Room type: Sets the room type in which the controller will be installed.

It is automatically adjusted to the default of the set room, and the room picture and status display of the main screen are also changed.

※ 6.See Auto setting value according to room change (p.17).

(2)Fan type: Sets the fan output to match the type.

(3)Low speed fan voltage: Sets the voltage at low speed fan output. (Set when fan output is set to 3-step)

(4)Medium speed fan voltage: Set the medium speed fan output voltage. (Set when fan output is set to 3-step)

(5)High speed fan voltage: Set the voltage at high speed fan output. (Set when fan output is set to 3-step)

(6)Cooling step: Set the number of steps of the cooler. ('0' means no cooling)

(7)Heating step: Set the number of steps of the heater. ('0' means no heating)

(8)Air supply minimum valve opening rate: If automatically setting the air supply output (AO1), it sets up the minimum output. (If setting it as 30%, it maintains 30% of output in the output conditions for less than 30%)

(9)Air supply maximum valve opening rate: If automatically setting the air supply output (AO1), it sets up the minimum output (If setting it as 70%, it maintains 70% of output in the output conditions for higher than 70%).

(10)Exhausting minimum valve opening rate: If automatically setting the air exhaustion output (AO2), it sets up the minimum output. (If setting it as 30%, it maintains 30% of output in the output conditions for less than 30%).

(11)Exhausting maximum valve opening rate: If automatically setting the air exhaustion output (AO2), it sets up the maximum output. (If setting it as 70%, it maintains 70% of output in the output conditions for higher than 70%).

(12)Contact mode: Choose DI6 contact function. If setting it as 0, it operates as a contact for opening the gate. If setting it as 1, it operates as a remote operating contact.

▮5-6. Error correction setting

NO	Item	Range	Default	Unit	ACCESS
(1)	Temperature correction	-20.0~20.0	0.0	℃	General
(2)	Humidity correction	-20.0~20.0	0.0	%	General
(3)	Differential pressure 1 correction	-2.00~2.00 / -20.0~20.0	0.0	mmAq/Pa	General
(4)	Differential pressure 2 correction	-2.00~2.00 / -20.0~20.0	0.0	mmAq/Pa	General

(1)Temperature correction : Set the value to compensate for the temperature value read from the temperature / humidity sensor when a deviation occurs.

(2)Humidity correction: Set the value to compensate for the deviation of the humidity value read from the temperature / humidity sensor.

(3)Differential pressure 1 correction: Set the value to compensate for the deviation in the differential pressure value read from the differential pressure 1 sensor.

(4)Differential pressure 2 correction: Set the value to compensate for the deviation in the differential pressure value read from the differential pressure 2 sensor.

▮5-7. Other settings

• You can set the current date and time.

• It is possible to adjust lighting time and screen brightness to conserve energy or maximize performance.

(If there is no key input during the lighting time, it goes into the power saving mode. Set it to '0' to disable the power saving mode.)

▮5-8. Hidden settings

Important settings that can affect the system as a whole are locked so that only the

administrator can access and change it by entering the correct password.

NO	Item		Range	Default	Unit	ACCESS
(1)	Password		0000~9999	-	-	Admini strator
(2)	AO output delay		0.5~9.9	2.0	Sec	Admini strator
(3)	DO output customization	DO output 5 customization	0: Disable(=ban), 1: Cooling1, 2: Cooling2, 3: Heating1, 4: Heating2, 5: Disinfection, 6: Exhaust, 7: Positive pressure, 8: Negative pressure, 9: Alarm	ban	-	Admini strator
		DO output 6 customization		ban
		DO output 7 customization		ban
		DO output 8 customization		ban
		DO output 9 customization		ban
		DO output 10 customization		ban

(1)Password: You can change the administrator password.

(2)AO output delay: In case of analog output such as inverter or fan proportional control, you can set the delay time between 1% output change to prevent sudden output change.

(3)DO output customization: For efficient and versatile use of the DO output, the user can set the port and output type for the output except CAV and fan low speed / medium speed / high speed output.

※ Device reset: Touch and hold the key on the Hidden settings screen to initialize the device. Please be careful because it initializes all the settings of the main body as well as the monitor.

□ Input/ output information screen

• Touch the  key on the main screen to display the Input / output information

screen.

• DO / DI, AO / AI output and input status can be checked.

• You can test each input and output by touching the  key when the equipment is

in a stopped state.

[Sample] Input / output information screen

▮Test method

1) If you touch the  key, the cursor blinks on DO output 1 and test mode is activated.

2) Use the  key to toggle ON / OFF. To move the output port, use the  key.

3) To move between AO output and DO output, use the  key.

4) When you exit the test mode using the  or  key, the output is automatically reset.

□ Alarm screen

• Touch the  key on the output status screen to display Alarm screen.

• If there are more than 10 alarms, you can check previous / next alarm by key.

• If you touch and hold the  key, 'Alarm delete confirmation' popup window

(Use the  key to select "Disable" or "Delete" and complete with the  key.)

Alarm message list

Alarm contents	Detection / release condition	Release method
Compress or 1	Detection condition When Compressor 1 alarm input is turned OFF during compressor alarm delay time Release condition When Compressor 1 Alarm input is ON	Manual
Compress or 2	Detection condition When Compressor 2 alarm input is turned OFF during compressor alarm delay time Release condition When Compressor 2 Alarm input is ON	Manual
Fan	Detection condition When fan alarm input is OFF during operation (input contact is NCLOSE) Release condition Release condition When the fan alarm input is ON	Automatic
Filter	Detection condition When the filter alarm input is ON (input contact is NOPEN) Release condition When the filter alarm input is OFF	Automatic
Heating	Detection condition When the heating alarm input is OFF during radiator output (When input contact is NCLOSE) Release condition When heating alarm input is ON.	Automatic
High temperature	Detection condition Current temperature > High temperature alarm setting Release condition Current temperature <= High temperature alarm setting	Automatic
Low temperature	Detection condition Current temperature < Low temperature alarm setting Release condition Current temperature >= Low temperature alarm setting	Automatic
High pressure	Detection condition Current differential pressure > High pressure alarm setting Release condition Current differential pressure <= High pressure alarm setting	Automatic
Low pressure	Detection condition Current differential pressure < Low pressure alarm setting Release condition Current differential pressure >= Low pressure alarm setting	Automatic
Temperature sensor	Detection condition When communication with the sensor fails Release condition When communicating with the sensor	Automatic
Differential pressure 1 sensor	Detection condition When AI input value of differential pressure 1 sensor is normal Release condition When differential pressure 1 AI input value is abnormal due to disconnection / short circuit of sensor or sensor failure	Automatic
Differential pressure 2 sensor	Detection condition When AI input value of differential pressure 2 sensor is normal Release condition When differential pressure 2 AI input value is abnormal due to disconnection / short circuit of sensor or sensor failure	Automatic

6.Auto setting value according to room change

Setting parameters	General room or General	Operating room	quarantine room
Temperature and humidity mode	Display	Control	Display
Differential pressure mode	ban	ban	Control
Fan mode	3 Step	3 Step	3 Step
Cooling step	ban	ban	ban
Heating step	ban	1 Step	ban
Fan speed	Low speed	Low speed	Low speed
Disinfection time	0 min	5 min	0 min
Exhaust time	0 min	0 min	0 min
DO5 mode	ban	ban	ban
DO6 mode	ban	ban	ban
DO7 mode	ban	Heating 1	ban
DO8 mode	ban	ban	Positive pressure
DO9 mode	ban	ban	Negative pressure
DO10 mode	Alarm	Alarm	Alarm

Setting parameter	Common
Setting temperature	24.0℃
Cooling deviation	1.0℃
Heating deviation	1.0℃
Set positive pressure	2.00mmAq / 20.0Pa
Set negative pressure	-2.00mmAq / 20.0Pa
Positive pressure deviation	0.10mmAq / 1.0Pa
Negative pressure deviation	0.10mmAq / 1.0Pa
Differential pressure mode	양압
Temperature upper limit alarm	99.9℃
Temperature lower limit alarm	0.0℃
Differential pressure upper limit alarm	2.00mmAq/20.0Pa
Differential pressure lower limit alarm	-2.00mmAq/20.0Pa
Differential pressure 2 mode	금지
Temperature correction	0.0℃
Humidity correction	0.0℃
Differential pressure correction	0.00mmAq/0.0Pa
Differential pressure 2 correction	0.00mmAq/0.0Pa

※ The parameters in the common items have the same initial value regardless of the room type.

7.Inspection method for abnormalities

NO	Symptom	Check procedure	Measures
1	If the power is turned on but the operation fails	AC 220V input confirmation Check CONTROLLER FUSE Check MONITOR CABLE	Check power supply FUSE Replacement Connection BOLT fastening
2	When a fan alarm occurs	Check AC 220V R.S phase FAN OVERLOAD confirmation S phase and FAN terminal 220V output confirmation	R.S Change phase TEST RESET return TEST A / S Inquiry when OV
3	If an error occurs on the LCD screen display	MONITOR CABLE confirmation Generally due to errors in extension of cables by connection due to short length	Connection BOLT fastening Check sensor cable Connect shield wire
4	If a temperature sensor alarm occurs	Check SENSOR line	Connection terminal fastening
5	When the heater overheat alarm occurs	Overheat prevention T.C inspection check	Normal condition: Connection
6	If a compressor alarm occurs	HP, LP, OVERLOAD Status check pipe low pressure confirmation Confirmation of alarm input contact	TRIP return Gas charging Check input contact setting (p.13)
7	In case of temperature and humidity deviation	Perform temperature correction	Confirm error calibration setting (p.15)
8	If MICOM is continuously restarted or the fuse is damaged	Turn off the power, remove all control outputs, and wire only one again.	Track the electrical wiring in the area where the problem is occurring to eliminate the cause.
9	When communication is not possible when remote monitor is used	Confirm communication number RX (-), TX (+) Confirm two lines	Be sure to set RX(-). TX(+) to 1
10	Monitor cable length limit Sensor cable length limit	Error possible when exceeding 20m Error possible when exceeding 20m

8.Warranty

.

Warranty

Product Name : MEX-350RA

Warranty period of this product is 1 year from the acquisition date

and the compensation regulations are as follows.

Contents of Warranty

1. AS Warranty Product : MEX-350RA

2. AS Warranty Period: 1 year from the acquisition day

( 13 months from manufacturing date when the acquisition day is not identified )

3 The cases where warranty is not applied

When the failure or error of this equipment is caused by improper conditions or handling other than those specified in the manual. When the cause of failure is proved to be the one other than the one of this product. Remodeling or repair made in the place other than our company or the one designated by our company. Other natural disaster or fire, etc.

4. AS transportation

Principle of direct receipt by out company.

- Transportation cost shall be borne by our company during free A/S period.

- Transportation cost after free A/S period shall be borne by the user.

- Transportation cost for no defective product shall be also borne by the user.

5. Since above warranty is applied to only MEX-350RA itself, please use it considering safety when you configure the system or apply the same.

MST Co., Ltd (Company Seal is omitted)

※ Specifications and dimensions specified in the instruction manual are changeable without notice for improvement of the product.

※ Please contact our head office when you want us to repair this product due to defect or functional fault.

✔ It can be changed that specification, size of product to improve later.

✔ Please call our office if product has any problems.

MST Corporation

198-6, Angok-ro, Bucheon-si, Gyeonggi-do, Republic of Korea

Tel. 032-343-2577~8 / Fax. 032-343-2579 / Mail. mst2577@hanmail.net / www.msti.co.kr