3/2-way quick exhaust safety valves Series MD SAFEMAX
Series MD SAFEMAX solenoid valves are equipped with an integrated sensor that detects the position of the spool and enables to quickly exhaust the system in case of emergency.
The sensor is in ON status (LED switched on, electric contact closed) when the valve is in rest position (NC).
The single channel valve is classified in category 2 and can reach Performance level D.
The double channel valve is classified in category 4 and can reach Performance level E.
The user is responsible to perform the installation in compliance with the requirements of the ISO EN 13849-1 standard.
Please note: the safety valve is not sufficient, alone, to guarantee the safety function. Its setup requires the use of a monitoring device.
The Machinery Directive (MD) 2006/42 / EC establishes the safety requirements that a machine must respect in order to protect the health of people during its use.
Series MD SAFEMAX solenoid valves comply with ISO 13849-1, regarding the safe design of control systems that perform safety functions.
General Data
| Construction | Modular, compact, spool-type |
| Ports | Interchangeable threaded cartridges with thread G1/8, G1/4, G3/8, 1/8 NPTF, 1/4 NPTF or 3/8 NPTF or super-rapid fitting for tube Ø6, Ø8 and Ø10 mm or Ø1/4”, Ø5/16” and Ø3/8” |
| Mounting | In-line |
| Working temperature | -5°C ÷ 50°C |
| Working pressure | 2 ÷ 10 bar |
| Fluid | Compressed air |
| Flow rate | Single version: 1→2 = 1900 Nl/min 2→3 (6 bar; ΔP 1) = 1150 Nl/min (free flow; 6 bar, with silencer and exhaust into the atmosphere) Double version: 1→2 = 1420 Nl/min 2→3 (6 bar; ΔP 1) = 1150 Nl/min (free flow; 6 bar, with silencer and exhaust into the atmosphere) |
| Category and PL | Single version Cat. 2 up to PL d Double version Cat. 4 up to PL e |
| B10d | 2.000.000 cycles |
| Protection class | IP 65 |
| Response time when discharging (ISO 12238) | 120 ms |
| COIL CHARACTERISTICS | |
| Connection | DIN EN 175-301-803-B |
| Voltage | 24V DC (±10%) 3,1W (ED 100%) |
| SENSOR CHARACTERISTICS | |
| Connection | With wires, M8 |
| Voltage | 10-30V DC |
| Operation | Magnetoresistive |
| Contact | N.O. PNP, signal ON with solenoid valve in NC position |
| Max current | 200 mA |
Coding Example
| MD | 1 | – | V | 16 | 2 | 1 | B | – | 3/8 | – | ST |
| MD | SERIES |
| 1 | SIZE |
| V | COMPONENT 3/2-way valve |
| 16 | CONSTRUCTION Internal servo-pilot |
| 2 | CHANNEL 2 = Single 4 = Double |
| 1 | ACCESSORIES 0 = Without silencer 1 = With silencer |
| B | SENSOR A = CE sensor, cable length 2 m B = CE sensor, cable length 5 m C = CE sensor, M8 connector |
| 3/8 | PORT = Without cartridge 1/8 = G1/8 1/4 = G1/4 3/8 = G3/8 6 = Tube Ø6 8 = Tube Ø8 10 = Tube Ø10 1/8TF = 1/8 NPTF 1/4TF = 1/4 NPTF 3/8TF = 3/8 NPTF 04TF = Tube Ø1/4″ 05TF = Tube Ø5/16″ 06TF = Tube Ø3/8″ |
| ST | MOUNTING = Without mounting accessories ST = Rear bracket D = Through-bolts |
If the inlet cartridge (IN) is different than the outlet cartridge (OUT), both dimensions must be stated. The inlet cartridge (IN) must be larger than or equal to the outlet cartridge (OUT), for example: MD1-V1621B-3/8-1/4-ST.
