QVHZO-AES, QVKZOR-AES Proportional Flow Control, Pressure Compensated, Size 6/10, Max Flow 45/90 L/min
Key Features
- Surface mounting: ISO 4401
- Size 06 and 10
- Max flow respectively up to:
- QVHZO = 45 l/min
- QVKZOR = 90 l/min
- Max pressure = 210 bar
- Pressure Compensated
- Direct Operated
QVHZO and QVKZOR are 2 or 3 flow proportional valves, direct operated without position transducer, which provide compensated flow control according to the electronic reference signal.
They operate in association with electronic drivers, see section which supply the proportional valves with correct current signal to align valve regulation to the reference signal supplied to the electronic driver.
They are available in different executions:
- A, without position transducer;
- AE, -AES, as -A plus analogue (AE) or digital (AES) integral electronics;
The flow is controlled by a throttle , directly operated by the proportional solenoid . The mechanical pressure compensator keeps a constant Delta p across the throttle , thus the regulated flow is independent to the load conditions.
The integral electronics ensures factory presetting, fine functionality plus valve-to valve interchangeability and simplified wiring and installation.
The electronic main connector is fully interchangable for -AE and -AES executions.
Standard 7 pin connector is used for power supply, analog input reference and monitor signals.
12 pin connector is used for option /Z and option /W (AES).
Following communication interfaces are available for the digital -AES execution:
- PS, Serial communication interface for configuration, monitoring and firmware updating through Atos PC software - always present also for -BC,
- BP and -EH options
- BC, CANopen interface
- BP, PROFIBUS-DP interface
- EH, EtherCAT interface
The valves with -BC and -BP interfaces can be integrated into a fieldbus communication network and thus digitally operated by the machine control unit.
The coils are fully plastic encapsulated with insulation class H.