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IO blocks

The input/output module is also called a control module. It can output a signal when there is a control requirement, or provide a switch signal to make the controlled device act, and at the same time can receive the feedback signal of the device to report to the host. It is a fire alarm linkage system. As an important component, the input and output modules on the market can provide a pair of passive normally open/normally closed contacts to control the controlled device. Some manufacturers' modules can be set to active output (such as Gulf GST-LD-8301), corresponding to dual input and output modules, multiple input and output modules and so on.

IO blocks


During a fire alarm, the alarm controller activates the external control devices that need to be linked through the output module, such as smoke exhaust valves, air supply valves, fire shutter doors, fans, alarm bells, etc., and can accept the actions of the equipment to answer.

The output module is connected to the controller's loop bus, and can be installed near the controlled equipment or in the floor terminal module box. Using electronic code writing, you can encode on the spot. The output control logic of the output module can be programmed according to engineering conditions. After the controller receives the alarm signal of the detector, according to the pre-programmed program, the controller sends the linkage control signal to the output module through the bus, and the output module starts the fire-fighting equipment that needs linkage; the equipment will receive a signal response after the action.

Product description


The GST-LD-8301 input/output module is a bus-based control interface that can be used to complete control of dual-action equipment such as two-step fire-proof rolling shutter doors, water pumps, and smoke exhaust fans. It is mainly used for the position control of fire shutter doors, which can be controlled from the upper position to the middle position, and can also be controlled from the middle position to the lower position. The module can also be used as two independent GST-LD-8301 input/output modules.

The GST-LD-8303 input/output module has two coded addresses. The two coded addresses are continuous. The maximum code is 242. It can receive commands for two different actions from the controller. It has two different control outputs and two different confirmations. The function to input the answer signal. The input signal required by this module is a normally open switch signal. Once the switch signal is activated, GST-LD-8303 sends this switch signal to the controller through the linkage bus. The linkage controller generates an alarm and displays the address number of the action device. When the module itself fails, the controller will also generate an alarm and display the module number. This module has two pairs of normally open and normally closed contacts and two sets of active outputs. The input and output have a line detection function.

The encoding method of the GST-LD-8303 module is electronic encoding. After one encoding address is programmed, the other encoding address is automatically generated as: encoding address +1. The coding method is simple and fast, and the on-site coding is carried out using GST-BMQ-2 electronic encoder produced by Gulf Company.

Main Specifications

(1) Working voltage:

Bus voltage: bus 24V

Power supply voltage: DC24V

(2) Monitor current:

Bus current≤1mA

Power supply current ≤6mA

(3) Operating current:   Bus current ≤4mA

Power supply current≤35mA

(4) Wire system: connect with the controller using non-polarity signal two buses, and connect with the DC24V power supply using non-polarity power two buses

(5) Output capacity: DC24V/1A (the sum of the maximum output capacity of the two groups is DC24V/1A)

(6) Output control mode: pulse, level (relay normally open/normally closed passive contact output, relay pull-in time is 10s when pulse starts)

(7) Factory setting: two-way normally open line inspection method

(8) Operating environment:

Temperature: -10℃~+55℃

Relative humidity≤95%, no condensation

(9) Shell protection level: IP30

(10) Overall dimensions:

110mm×86mm×43mm (with bottom shell)


If the module input is set to the "normally open inspection line" status input, the end of the module input line (away from the module end) must be connected in parallel with a 4.7kΩ terminal resistance; if the module input is set to the "normally closed inspection line" status input module input line A 4.7kΩ termination resistor must be connected in series at the end (away from the module end). When the module is active output, a 4.7kΩ terminal resistor should be connected in parallel with an IN4007 diode in series.


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