Mitsubishi Electric Air-conditioner Network System Central Controller Model: GB-50A Instruction Book Contents 1. Safety ..............1 2. Introduction ...............3 3. Function ..............4 4. External input/output function ........8 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.
Safety 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.
CAUTION Do not use the controller in special Do not install the controller in a place where environments. flammable gas could leak. The performance may be reduce or parts may be If gas leaks and collects around the unit, it may cause damaged if the controller is used in locations subject a fire or explosion.
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.
Function 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.
3-2.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.
3-3 Setting Functions Make initial settings with either the Initial Setting Web or Initial Setting Tool. Table 3-3 List of initial-setting functions Initial Setting Item This Unit Initial Setting Tool Remarks M-NET address The default value is 0. √ √ setting IP address setting The settings of the simple...
● 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.
External input/output function *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) •...
(A) Level signal ① When 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). ② When 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.