Hydro Instruments VPH-10000 Series, Инструкция по эксплуатации

Страница: 8 / 34

8
TAbLE 1: relay designations for Vaporizer Alarms and relays
Parameter Terminal
Gas Pressure AO1
Gas Temperature AO2
Superheat Temperature AO3
Control Water Temperature AO4
Auxiliary Water Temperature AO5
Expansion Chamber Switch DI3
Pressure Relief Valve Switch DI4
* Wired from the factory.
NOTe: The electronic pressure reducing valve relays are energized relays and thus recommended
normally open.
TAbLE 2: 4-20 Output designations
NOTe: All outputs must also be wired to the appropriate V- (GND) terminal.
4.3 Modbus Information
The VPH-10000 can also communicate with a SCADA system using Modbus RS-485 communication.
The baud rate, node number and data format of the VPH-10000 must match that of the master SCADA
system. See Section III.5 for information on how to accesses and edit these features. A table of
Modbus integers and their corresponding parameters can be seen in Table 3. For more information
on configuring Hydro Instruments equipment onto SCADA systems, please refer to the Modbus
Installation and Instruction manual.
Vaporizer Alarm/Relay Board Number Relay Number Recommended Wiring
Electronic Pressure
Reducing Valve 1
CB-8RELAY 1 N.O.
*Refill Solenoid CB-8RELAY 2 N.O.
*Circulation Pump CB-8RELAY 3 N.C.
*Magnetic Contactor CB-8RELAY 4 N.O.
Electronic Pressure
Reducing Valve 2
CB-8RELAY 5 N.O.
Superheat Alarm CB-8RELAY 6 N/A
High Pressure Alarm CB-8RELAY 7 N/A
Water Level Alarm CB-8RELAY 8 N/A
Low Water Temperature Alarm CB-2RELAY 1 N/A
High Water Temperature Alarm CB-2RELAY 2 N/A