GH34404412 Carlo Gavazzi

GH34404412, Ent./Sal Module. Dupline® for Irrigation Valve Control Model GH 3440 4412, GH34404412, The valve module GH 3440 4412 is part of the Dupline® irrigation program. It is designed to control 3-wire "latch" valves. The GH34850000 booster module, which generates the 28 V signal, controls and powers up to 64 GH34404412 valve modules. The GH34404412 has 2 outputs, one to open and one to close the valve, and 2 inputs for for example the flowmeter, the counter-sabotage signal, etc. The module has built-in capacitor for in - nailing/uncoiling the coil, lightning protection and a microcontroller for correct coil pulses and load monitoring., GH34404412, The goal of the Dupline irrigation bus system is to reduce the wiring costs of irrigation systems. Connecting the irrigation controller to all field valves using a 2-wire bus results in a much simpler and more flexible solution compared to the traditional multi-wire cable with a specific wire for each valve. Through the bus system the irrigation controller can control each valve (open /closed) and also carries the power required to operate the valves, which must be of type "latch" of 3 wires of 12 VDC. In addition, it is possible to send field information to the irrigation controller, for example pulses from a flowmeter. Each valve must be connected to an I/O module with 2 digital outputs (open, close) and 2 digital inputs. The GH34404412 I/O module is designed for DIN rail mounting. The interface between the irrigation controller and the Dupline master module is obtained through serial communication (RS232 or RS485) between the two units. The GH 3485 0000 724 booster module increases the voltage level of the standard Dupline signal to 28 VDC Hi-Line in order to obtain a voltage level sufficient to operate the valves. The following diagram shows the topology of the system.