GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
283
It lights on when the Modbus gateway is powered normally.
It flashes when the Modbus gateway is in normal operation.
3. Digital Inputs and Outputs
This gateway supports five DIs (digital inputs) and five DOs (digital outputs). There is another reserved
digital output DO 6.
DI1...DI5
Digital inputs: binary (0/1) digital signals, applicable to passive inputs.
DI 1: it is defined for the fire alarm input. When K1 is short circuited, DI 1 will input the binary signal ―1‖,
which indicates that the Modbus gateway will stop the whole air conditioning system at once. When K1 is
opened, DI 1 will input the binary signal ―0‖, which indicates the whole system will resume the normal
operation.
DI2...DI5: they will be defined by the user.
E.g.: when K5 is closed, DI 5 will input the binary signal ―1‖ and input the binary signal ―0‖ when it is
opened.
DO1...DO5
Digital outputs: relay outputs, normally open contacts.
Maximum allowable power: 250VAC,3A; 30VDC,3A
E.g.: when DO 5 is input the binary signal ―1‖, its two contacts will be closed; when DO 5 is input the
binary signal ―0‖, its two contacts will be opened.
To Next Page
Loading...
