| Technical data (Please consult with us when the application needs higher requirement than the parameter shown below) | ||||
| Model | BFW | BFWN | ||
| Installation position | optional, preferably horizontal | |||
| Storage temperature range | (℃) | -20~80 | ||
| Ambienttemperature range | (℃) | -20~70 | -20~50 | |
| Weight | (kg) | DN6 | 2.0 | 2.2 |
| DN10 | 6.6 | 6.8 | ||
| Hydraulic Specification | ||
| Operating pressure(bar) | Ports A，B, P | 315 |
| Port T | 210 | |
|
Nominal flow |
DN6 | 7,15 and 26 |
| DN10 | 30,60 | |
| Flow (Max. Permissible) (L/min) | DN6 | 42(with double flow 42)80 |
| DN10 | 75(with double flow 75)140 | |
| Pressure fluid | Mineral oil (HL，HLP) to DIN 51 524;For other fluid please consult with us. | |
| Fluid temp. Range (℃) | -20~80(+40~+50 is preference) | |
| Viscosity range (mm²/s) | 20~380(30~46 is preference) | |
| Hysteresis (%) | ≤5 | |
| Reversal span (%) | ≤1 | |
| Response sensitivity (%) | ≤0.5 | |
| Cleanliness | Maximum permissible degree of pressure fluid contamination to NAS 1638 to class 9 Recommended filter β10≥75。 | |
| Electrical Specification | ||||
| Model | BFW1 | BFWN | ||
| Voltage type | Direct voltage | |||
|
BFWN |
Voltage input “A1” | (V) | ±10 | ±10 |
| Voltage input “F1” | (mA) | 4~20 | 4~20 | |
| Max. current per solenoid | (A) | 2.5 | 2.5 | |
| Solenoid coil Resistance | (Ω) | Cold value at20℃ | 2 | 2 |
| Max. warm value | 3 | 3 | ||
| Duty cycle | (%) | 100 | ||
| Max.Coil temperature 2 | up to150 | |||
| Electrical connection | BFW | Plug-in connector to DIN EN 175301-803 and ISO 4400 | ||
| BFWN |
Plug-in connector to DIN EN 175301-803 and ISO 4400 Plug-in connector to DIN 43563-AM-3 |
|||
| Insulation of valve to DIN 40 050 | IP65 | |||
Control electronics
| BFW (type) | Analogue amplifier in Eurocard format2) | Details refer to proportional amplifier | |||
| Digital amplifier in Eurocard format2) | Details refer to proportional amplifier | ||||
| BFWN (type) | Analogue command value module | Integrated into the valves | |||
| Supply voltage |
BFWN BFW |
Nominal voltage | VDC | 24 | |
| BFWN Lower limiting value | V | 21/22 | 19 | ||
| BFW Upper limiting value | V | 35 | |||
| Amplifier current consumption | Imsx | A | 1.8 | 1.8 | |
| Max. impulse current | A | 3 | 3 | ||
