BULLETIN DM2® Series D 3/2 Double Valves with Dynamic Monitoring & Dynamic Memory Kupplung/Bremse クラッチ/ブレーキ Iaktk@ xfrjks/kd Embreagem/Freio 离合器/制动器 • Manufacturers of Premium Pneumatic Controls since 1921 • 505
Table of Contents DM2® Series D Double Valves General Information Page 3 - 4 Ordering Information Page 5 Valve Dimensions Page 6 - 7 Overview of DM2® Series D Double Valve Page 8 - 9 Flow Information Page 10 - 11 Operating Instructions Page 12 Repair Kits Page 13 Accessories Page 14 Cautions/Warranty Page 15 The Leader in Double Valve Design ROSS has long been in the forefront of double valve research and development.
DM2® Series D Double Valves The ROSS DM2® Series D double valves provide significant features in response to the changing demands of the mechanical press industry and its associated standards and regulations regarding the control of pneumatically controlled clutch and brake applications.
DM2® Series D Double Valves with Total Dynamic Monitoring & Complete Memory Self Monitored - Clutch/Brake Control For Size 2 Certifications Approval Pending Size 4 Size 2 Simplified Schematic Valve Sizes: DM2® Series D double valves are available in 5 sizes, providing a broad range of flow capabilities to meet your needs. For convenience, valves are designated by the nominal sizes 2, 4, 8, 12, and 30 with outlet ports ranging from 1/4” to 2”.
DM2® Series D Double Valves HOW TO ORDER (Choose your options (in red) to configure your valve model number.) DM2D D A 4 2 A 1 STATUS INDICATOR 1......................................... YES X............................................NO PRODUCT THREAD BSPP.............................................. D NPT................................................ N N/A (no base)................................. X RESET TYPE 1..................................REMOTE 2..............................
DM2® Series D Double Valves DIMENSIONS – inches (mm) SIZE 2 View X (Base mounting hole pattern) 4.50 (114.3) 4.79 (121.6) Valve envelope (Based in overall hole dimnsions at left.) 0.22 (5.6) (4 places) 10.63 (270.0) With Status Indicator & Solenoid Reset 1.19 (30.2) 0.82 (20.9) 9.99 (253.8) With Status Indicator 7.73 (196.4) 2.99 (75.9) 4.00 (101.6) 2.99 (75.9) 4.00 (101.6) CV : 1 to 2: 2.17 2 to 3: 3.66 0.64 (16.2) 1.37 (34.9) 2.04 (51.9) 4.00 (101.6) SIZE 4 0.25 (6.4) 2.04 (51.9) 0.
DM2® Series D Double Valves DIMENSIONS – inches (mm) SIZE 12 View X (Base mounting hole pattern) Valve envelope (Based in overall hole dimnsions at left.) 12.61 (320.23) with Pressure Switch 11.27 (286.26) CV : 1 to 2: 8.86 2 to 3: 20.78 SIZE 30 View X (Base mounting hole pattern) Valve envelope (Based in overall hole dimnsions at left.) 15.48 (393.14) with Pressure Switch 14.25 (361.98) CV : 1 to 2: 20.22 2 to 3: 53.68 STANDARD SPECIFICATIONS: For DM2® Series D double valves.
Overview of DM2® Series D Double Valve Function Valve de-actuated: The flow of inlet air pressure into the crossover passages is restricted by the size of the passage between the stem and the valve body opening. Flow is sufficient to quickly pressurize pilot supply/timing chambers A and B. The inlet poppets prevent air flow from crossover passages into the outlet chamber. Air pressure acting on the inlet poppets and return pistons securely hold the valve elements in the closed position.
Overview of DM2® Series D Double Valve MAIN VALVE INTERNALS Pilot Valve B B A Pilot supply/timing chamber A Piston Exhaust chamber Exhaust poppet EXHAUST OUTLET Outlet chamber Inlet poppet Timing orifice Crossover passages Inlet chamber Pilot Valve A INLET Flow restrictor Reset poppet Spring stop Reset piston Return spring VALVE SCHEMATIC www.rosscontrols.
Valve Response Charts The charts below represent the fill and exhaust times for each of the various sizes of DM2® Series D double valves. The “fill” times were measured while raising (filling) the pressure in a volume from 0 to 30, 60, & 80 psi (0 to 2.1, 4.1, & 5.5 bar) with a 90 psi (6.2 bar) inlet pressure. Conversely, the “exhaust” times were measured while lowering the pressure (exhausting) in a volume from 90 psi (6.2 bar) down to 90 to 60, 30, & 9 psi (4.1, 2.1, & 0.6 bar).
Valve Response Charts Filling Exhausting Size 12 Volume litres (cubic inches) Volume litres (cubic inches) Size 30 Volume litres (cubic inches) Volume litres (cubic inches) Application & Safety Category 1. General The design features of the DM2® Series D are of considerable importance to users of double valves, such as on mechanical power press applications and other critical applications.
Operating Instructions Start-up Before start-up, the installation must be checked thoroughly by persons trained and experienced in the operation of pneumatic equipment. Make sure that specifications given on the valve label (e.g. “max. operating pressure” and “electrical characteristics”) will be in accordance with the operating specifications of the press.
Repair Kits Item A B* C* D* E* F* Description Valve body service kit Complete primary solenoid pilot Complete reset solenoid pilot Solenoid coil - pilots Solenoid coil reset Pilot booster service kit Size 2 Size 4 Size 8 Size 12 2101K77 1480C79 859C79 306K33 306K33 – 2102K77 1403H79 851C79 306K33 306K33 – 2103K77 1404H79 851C79 360K33 306K33 – 2104K77 1391K79 851C79 306K33 306K33 2106K77 Size 30 2105K77 1391K79 851C79 306K33 306K33 2106K77 * Specify solenoid voltage and Hz when ordering.
Accessories ELECTRICAL CONNECTORS STATUS INDICATOR The Status Indicator pressure switch actuates when the valve is in a ready-torun condition and de-actuates when the valve is in a lock-out condition or when the inlet air pressure has been removed.
CAUTIONS PRE-INSTALLATION or SERVICE 1. Before servicing a valve or other pneumatic component, be sure that all sources of energy are turned off, the entire pneumatic system is shut off and exhausted, and all power sources are locked out (ref: OSHA 1910.147, EN 1037). 2. All ROSS products, including service kits and parts, should be installed and/or serviced only by persons having training and experience with pneumatic equipment.
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