Mitsubishi Electric Central Controller GB-50A User manual

Mitsubishi Electric Air-conditioner Network System

Central Controller

Model: GB-50A Instruction Book

Contents

Before using the controller, please read this Instruction Book carefully to ensure correct

operation. Store this Instruction Book in a location that is easy to find.

1. Safety ......................................................................1

2. Introduction ...............................................................3

3. Function ....................................................................4

4. External input/output function.....................................8

Please take a moment to review these safety precautions. They are provided for your protection and to prevent damage to

the controller.

This safety information applies to all operators and service personnel.

After you have read this manual, always observe the procedures described in the explanations and store it with the

installation manual in a location that is easy to find. If the controller is going to be operated by another person, make

sure that this manual is given to them.

Symbols and Terms

WARNING Incorrect handling can result in death, serious injury, etc.

CAUTION Incorrect handling can result in injury or damage to the building or its contents.

Specific Precautions

WARNING

Ask your dealer or technical representative to

install.

If incorrect installation is done by a customer, it may

cause an electric shock, fire, etc.

Do not move and re-install the controller by

yourself.

If installation is incorrect, it may cause an electric

shock, fire, etc. Ask your dealer or technical

representative.

Securely install in a place which can withstand the

weight of the controller.

If it is not enough, the unit may fall and cause an

injury.

Contact your dealer if the controller will not be

used any more or will be scrapped.

Make sure that the controller is connected to a

rated power supply.

If the controller is not connected to a rated power

supply, it may cause a fire or damage to the controller.

Do not remodel or repair by yourself.

If the controller is redesigned or repair is not

correct, it may cause an electric shock, fire, etc.

Consult your dealer if repair is necessary.

Never remove the cover during operation.

Touching the charged parts of the controller may cause

severe burns or other personal injury.

Stop the operation if any malfunction occurs.

If malfunction occurs (burning smell, etc.) stop the operation

and turn off the power supply. Contact your dealer or

technical representative immediately. If the controller

continues to operate after a malfunction occurs, this may

cause damage, electric shock or fire.

Stop the operation immediately and notify your dealer

if an error code is displayed or malfunction occurs.

Fire or damage may be caused if the controller is

operated in this condition

1 Safet

CAUTION

Do not install the controller in a place where

flammable gas could leak.

If gas leaks and collects around the unit, it may cause

a fire or explosion.

Do not use the controller in special

environments.

The performance may be reduce or parts may be

damaged if the controller is used in locations subject

to large quantities of oil (including machine oil),

steam, sulfide gas.

Do not wash this controller with water.

It may cause an electric shock or malfunction.

Do not touch the switches with sharp objects.

It may cause an electric shock or malfunction.

Operate the controller within the specified

temperature range.

Observe the specified temperature range when

operating the controller. If the controller is used

outside the specified temperature range, it may cause

serious damage. Be sure to check the operation

temperature range in the operation manual.

Do not touch the switch with wet hands.

It may cause an electric shock.

Do not use the controller for special applications.

This product is designed for use with the MITSUBISHI

ELECTRIC BUILDING AIR CONDITIONING CONTROL

SYSTEM. Do not use the system for other air condition

management operation or applications. It may cause

malfunctions.

Do not apply insecticide or flammable sprays to the

controller.

Do not place flammable spray near the controller and make

sure it does not blow directly on the controller as this may

cause a fire.

2-1. About this manual

This manual covers the settings that can be made or functions that can be displayed only on the GB-50A

body.

2-2. Monitor and operation of the air conditioners

To monitor and operate the air conditioners, license for “GB-50A License Pack” or “Web Monitor” must be

purchased and registered. Purchase the license from the dealer, and register on the Initial Setting Web or

on the Web for Monitor and Operation.

Refer to Web Browser Operation Manual for monitor and operation of air conditioners.

The format in which the Web page address for each GB-50A is expressed on the Web browser, as well as

the default user name and password are shown below.

http://[IP address of the GB-50A]/administrator.html

Note: For example, type http://192.168.1.1/administrator.html if the GB-50A IP address is [192.168.1.1].

User Default

user name

Default

password

Managers administrator admin

2 Introduction

Notes

●With the registration of “GB-50A License Pack,” Web Monitor,” “Annual Schedule,” “Weekly Schedule,”

“Sending Error Mail,” and “Maintenance Tool Advanced” functions will be available.

●Consult the dealer for information on other functions that require a license (i.e. “Charge” “Saving Energy

Control”).

●Ask the dealer for the Web Browser Operation manual, which covers monitor and operation of air

conditioners.

●Initial settings such as making group changes are covered in the Initial Setting Web manual.

The format in which the Web page address for each GB-50A is expressed on the Web browser, as well

as the default user name and password are shown below.

http://[IP address of the GB-50A]/g-50/administrator.html

Note: For example, type “http://192.168.1.1/g-50/administrator.html” if the GB-50A IP address is [192.168.1.1].

User Default

user name

Default

password

Maintenance user initial init

3-1. Specification

Table 3-1 Specification list

Item Specification

Interface M-NET : DC30V/24V;0.13/0.15A

LAN : Ethernet 10Base-T

Input/output :DC12V or 24V (External power supply)

Temperature Operating range 0 to 40ºC / 32 to 104ºF

Storage range -20 to 60ºC / -4 to 140ºF

Environmental condition

Humidity 30~90%RH (No condensation)

Dimensions 130(H) ✕250(W) ✕38 (D) mm／51/8(H) ✕97/8(W) ✕1

1/2(D)in

Weight 1.1kg／2

1/2lb

Installation Environment

In the control panel box (indoor)

*This unit is installed and used in a business office or equivalent

environment.

Number of control unit

Indoor unit or independent OA processing unit or LOSSNAY

: 50 units maximum (50 groups maximum)

Number of units (indoor or independent OA processing unit or LOSSNAY) in

one group

: 1-16 units

*Note Indoor unit, independent OA processing unit and LOSSNAY

can not register to the same group.

Number of remote controllers in one group

: 1-2

Number of system controllers in one group

: 0-4 (including the number of remote controller in one group)

: 0-3 for groups which have one remote controller.

Number of indoor units interlocked with one OA processing unit or

LOSSNAY

: 0-16 (some types of OA processing unit can only be operated

when interlocked to a maximum of 9 units)

Notes

●Refer to the WEB Browser Operation Manual for the operation of GB-50A.

●There are two ways to make the initial settings via LAN: one is to use the initial setting web and the

other is to use the initial setting tool. Either can be used to make the settings, although initial setting

web has more functions than the initial setting tool.

3 Function

3-2.Function list

The use of GB-50A requires a license registration. By registering the license, group or block operation of

the units on the Web browser will become available. Registration for the license that is required to use

various functions can be completed on the license registration page.

Table 3-2 List of Web monitoring function

Item Content

Start/stop Switching start/stop collectively or for each group

Operation mode Switching cool/dry/fan/auto/heat collectively or for each group

Temperature setting Setting room temperature collectively or for each group

Set temperature range Cool/dry: 19ºC-30ºC /67ºF-87ºF

Heat: 17ºC-28ºC /63ºF-83ºF

Auto: 19ºC-28ºC /67ºF-83ºF

*Note: Preset temperature range varies on different models.

Air velocity Switching air velocity in 4 steps collectively or for each group.

Air direction Switching in 4 steps vertically and for swing collectively or for each group

(Selectable air direction differs depending on the model)

Start/stop of interlocked

equipment (Lossnay)

Switching start (Hi/Lo)/stop collectively or for each group when connecting with

interlocked equipment (Lossnay).

(However, ventilation mode can not be selected for the interlocked equipment.)

Prohibition of local control Selecting the items for which local control is prohibited collectively or for each

group.

(Items include start/stop, operation mode, temperature setting and filter sign.)

Error display Identifies the unit in trouble and displays the nature of trouble

Filter sign display and

reset

Filter sign display can be reset in each group or collectively.

Malfunction history Malfunction history can be check up to 64 contents in both unit and

communication error.

Annual/weekly schedule Using the annual/weekly schedule function by license registration.

Malfunction e-mail history E-mail history can be check up to 64 contents.

* The above specification may be changed depending on the equipment connected or combined.

* The block setting and the registration of block/group names require the initial setting tool or initial setting

web.

*Without prior notice, the content may be changed.

3-3 Setting Functions

Make initial settings with either the Initial Setting Web or Initial Setting Tool.

Table3-3Listofinitial-settingfunctions

Item This Unit Initial Setting Tool Initial Setting

Web Remarks

M-NET address

setting √√The default value is 0.

IP address setting √

(simple setting) √√

The settings of the simple

setting have the priority

over other settings.

Function selection

√√

Presence/absence of

K transmission converter

connection, local operation

prohibition setting, and external

input mode

Group registration √√

Registration of

interlocked

operation with the

Lossnay unit

√√

Switch for start-up

mode √

Other settings √√Available functions vary

depending on the tools.

1) How to set the IP address with dipswitches

IP addresses between 192.168.1.1 and15 can be set using the 4-pin dip switch on SW2.

Set this switch before turning the power on.

Note

●When setting IP addresses with the Initial Setting Web or the Initial Setting Tool, set all four

dipswitches on SW2 to OFF.

1 2 3 4 Contents (IP address)

OFF OFF OFF OFF

Address that is set with Initial Setting Web or

Initial Setting Tool.

(Initial IP address setting is 192.168.1.1)

OFF OFF OFF ON Starts from 192.168.1.1

OFF OFF ON OFF Starts from 192.168.1.2

OFF OFF ON ON Starts from 192.168.1.3

OFF ON OFF OFF Starts from 192.168.1.4

OFF ON OFF ON Starts from 192.168.1.5

OFF ON ON OFF Starts from 192.168.1.6

OFF ON ON ON Starts from 192.168.1.7

ON OFF OFF OFF Starts from 192.168.1.8

ON OFF OFF ON Starts from 192.168.1.9

ON OFF ON OFF Starts from 192.168.1.10

ON OFF ON ON Starts from 192.168.1.11

ON ON OFF OFF Starts from 192.168.1.12

ON ON OFF ON Starts from 192.168.1.13

ON ON ON OFF Starts from 192.168.1.14

ON ON ON ON Starts from 192.168.1.15

(Inside the cover)

SW 2

1 2 3 4

OFF

2) Setting of the service switch

The switches must be OFF for normal use. The switch setting change works when the power is turned on

next time.

3-4 Service LED display

This unit comes with an LED that displays operation status.

Table 3-4 List of services LED

LED No. Items Contents

Power supply

LED Powering status ON : Power is supplied / OFF: Power is cut off

LAN LAN LINK ON : During LINK / OFF: No LINK

LAN LAN ACT Flicker: During communication / OFF: No communication

LED1 Start-up ON : Start-up not completed / OFF: Start-up completed

LED2 Operation ON/OFF ON : 1 or more units are ON / OFF: All OFF

LED3 Error Flicker: Error occurred on 1 or more units / OFF: Normal state

LED4 (not defined) -

LED5 (not defined) -

LED6 M-NET communication

(transmission)

Flicker: During communication / OFF: No communication

1 2 Contents Remarks

OFF OFF

Start up with the normal

mode *This setting is for normal use.

ON OFF - Setting is prohibited.

OFF ON - Setting is prohibited.

ON ON

Start up with the update

mode

*The software can be updated with the

normal mode. If the update fails, or the

software does not work properly use

this setting to update the software

again.

*SW1-3 and SW1-4 are always OFF.

Notes

●When 15 or fewer GB-50A units are used in the designated network for air-conditioning, it is recommended that

the IP address be set using SW2 on the unit.

●If the set IP address of GB-50A is forgotten, check the IP address that is registered on the monitoring PC (WEB

or TG-2000A). GB-50A can be started by changing the setting of SW2 on GB-50A and using an arbitrary fixed

IP address as a temporary IP address. It is recommended to paste a sticker with the IP address on the unit, so

that the IP address of GB-50A is available at all times. Once GB-50A is started up with a temporary IP address,

a new IP address can be assigned to it on the Initial Setting Web.

LED1-6

Power supply

LED LAN

POWER LAN LINK/ACT 1 2 3 4 5

SW 1

1 2 3 4

Not to be used

OFF

*External signal input requires the external I/O adapter (Model: PAC-YG10HA) sold separately.

4-1 External input function

(1) The function of external input

• Emergency stop/normal operation, ON/OFF, local remote control prohibit/permit can be controlled for

conditioners being controlled with a non-voltage contact signal input from an external input source.

(the dip switches)

• The condition of external input signal is displayed on the operation setting screen for each group.

Table 4-1. Function settings of external input

No. Function of external input signal Remarks

1 External input signal not used -------------------------------------------------------------

2 Perform emergency stop with level signal During emergency stop, only ON/OFF of the

central controller and local remote controller’s

operation will be prohibit.

3 Perform ON/OFF operation with level signal Only the ON/OFF operation of the central controller

and the local remote controller will be prohibit.

4 Perform ON/OFF operation, prohibit/permit

operation with pulse signal

Set the pulse width while the contact is ON to 0.5 to

1.0 second.

*Settings for these functions can be set with the Initial Setting Web or Initial Setting Tool.

(2) Level signal and pulse signal

(3) Specification of external input interface

CN2 Lead Wire Emergency stop/normal

level signal

ON/OFF level signal

ON/OFF, prohibit/permit

pulse signal

No.5 Orange Emergency stop/normal

input

ON/OFF input ON input

No.6 Yellow Not used Not used OFF input

No.7 Blue Not used Not used Local remote controller

prohibit input

No.8 Gray Not used Not used Local remote controller

permit input

No.9 Red Common (DC12V or DC24V)

4 External in

ut/out

ut function

(A) Level signal

①When the level signal is selected, the operation (only ON/OFF operation) for the central controller and

the local remote controller are prohibited (except during normal operation).

②When the emergency stop/normal operation signal is selected, the status will be changed from normal

operation to emergency stop when the external input signal contact turns OFF to ON, and will be

changed from emergency stop to normal operation when external input signal contact turns ON to OFF.

Emergency stop signal will bring the air conditioners to stop, and canceling the emergency stop will not

automatically restart these units. To go back to the previous operation status, they must be manually

turned back on.

③When ON/OFF input signal is selected, the status will be changed from OFF to ON when the external

input signal contact turns OFF to ON.

(B) Pulse signal

①Even if the ON signal is input during ON, the status will remain at the ON status.

②When the local remote controller is prohibited, the ON/OFF operation, operation mode selection and

temperature setting from the local remote controller is prohibited.

③Set the pulse width (contact ON time) to 0.5 to 1.0 second.

4-2 External output function

(1) The function of external output

●The “ON” signal is output when one or more air conditioner are in the ON operation.

●The “Malfunction” signal is output when one or more air conditioner malfunctions.

(2) Specification of external output interface

CN2 Lead wire Description of each terminal

No. 1 Green Common (0V)

No. 2 Black ON/OFF

No. 3 Brown Malfunction/Normal

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