–––– Air-conditioner Control System Centralized Controller Model: GB-24A Instruction Book Contents 1. Safety Precautions ...................................................1 2. Introduction ...............................................................3 3. Functions ..................................................................4 4. External input/output functions ...................................8 Before using the controller, please read this Instruction Book carefully to ensure correct operation.
This manual describes how to operate the centralized controller. Before using the controller, read the 1 Safety Precautions section carefully to ensure proper installation. 1 Safety Precautions Safety precautions are provided for your protection and to prevent damage to the controller. The safety precautions apply to all operators and service personnel.
CAUTION Do not use the controller in an environment high in oil, steam, or sulfuric gas. These substances may have adverse effects on the performance of the controller or damage its parts. Do not install the controller where there is a risk of leaking flammable gas. If the leaked gas accumulates around the controller, it may ignite and cause an explosion. Do not wash the unit with water. Doing so may cause an electric shock or malfunction.
2 Introduction 2-1. About this manual This manual covers the settings that can be made or functions that can be displayed only on the GB-24A. 2-2. Monitoring and operating the air conditioners To monitor and operate the air conditioners, “GB-24A License Pack” license must be purchased. 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 monitoring and operating the air conditioners.
3 Functions Notes ● Refer to the WEB Browser Operation Manual for operating the GB-24A. ● Use the initial setting web to make initial settings via LAN. 3-1. Specifications Table 3-1. Specifications Item Interface Environmental condition Dimensions Weight Installation Environment Number of control units Specifications M-NET: 30V DC/24V DC;0.13/0.
3-2. Function list GB-24A requires a license registration. By registering the license, group or block operation via the Web browser will be permitted. License registration that permits various functions can be completed on the license registration page. Table 3-2.
3-3. Setting Functions Perform initial settings with the Initial Setting Web. Table 3-3. Initial-setting functions Item M-NET address setting IP address setting Initial Setting Web GB-24A Remarks The default value is 0. √ √ (Simple setting) √ Simple settings have priority over other settings.
Notes ● When 15 or fewer GB-24A units are used in the air-conditioning network for, set the IP address via SW2 on the unit. ● If the set IP address of GB-24A is forgotten, check the IP address that is registered on the monitoring PC (WEB). GB-24A can be started by changing the setting of SW2 on GB-24A 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-24A is available at all times.
4 External input/output functions *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 on a system with a non-voltage contact signal input from an external input source.
(A) For level signal 1. When the emergency stop/normal signal is selected, the status will change from normal to emergency stop when the external input signal contact changes from OFF to ON, and will change from emergency stop to normal when the contact changes from ON to OFF. Emergency stop signal will bring the air conditioners to stop, and canceling the emergency stop will not automatically reset these units. To return to the previous operation status, they must be manually turned back on. 2.
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