MDM PROPORTIONAL PRESSURE-REDUCING VALVE Electrical operation Size 5 Series MDM-5 FEATURES * Pressure reducing over the whole range independent of the supply pressure. * Several sub-plates available. * Conversion to ISO/CETOP mounting surface. * Several control pressure ranges available. * Different pressure ranges for the two pilot lines possible. * Proportional solenoids with longer life for the armature in the oil. * Several types of proportional solenoids, such as explosion proof “II 2 G EEx m II T4” and IP67. * Adjustable valve response time. TECHNICAL DATA - maximum operating pressure conn. P 350 bar (5000 psi) - maximum return pressure conn. T 15 bar (215 psi) - pressure range conn. A and B 0 - 12 bar (0- 172 psi) or 0 - 30 bar (0- 429 psi) 0 - 70 bar (0-1000 psi) or 0 - 120 bar (0-1716 psi) 0 - 190 bar (0-2717 psi) or 0 - 350 bar (0-5000 psi) - flow range 6 l/min (1.6 USgpm) with 32 cSt and Äp = 30 bar (429 psi) - viscosity range 2,8 - 380 cSt - contamination level max. NAS 1638 class 9 or ISO 18/15 - ambient temperature -35°C to +80°C (-31°F to 176°F) - mounting position any - fluid mineral oil; other media on request - mounting surface roughness N6 (0,8 ìm) according to ISO 468 and ISO 1302. - mounting surface flatness 0,01 mm over a distance of 100 mm according to ISO 1101. - nominal voltage 12 V DC, 24 V DC - nominal current see diagrams Fig. 1 and 2 - valve response time adjustable: ± 0,08 - 10 seconds - hysteresis < 3% (with dither) - resolution < 0,5% (with dither) - continuous operation 100% - seals std. BUNA-N, optional Viton - recommended dither frequency 100 Hz DIAGRAMS Publ.MDM-5-03-06

ORDERING CODE MDM 5 MDM - 5 - 70 - 190 - B / Viton SERIES MDM-5 CONTROL PRESSURE RANGE, DUAL TYPE: Port A in bar *: 12, 30, 70, 120, 190 or 350 bar CONTROL PRESSURE RANGE, Port B in bar: 12, 30, 70, 120, 190 or 350 bar SOLENOID TYPE A = 12V DC IP65 with emergency control by pin B = 24V DC IP65 with emergency control by pin E = 12V DC IP65 with emergency control by button F = 24V DC IP65 with emergency control by button H = 24V DC IP57 II 2 G EEx m II T4 (Explosion Proof) J = 24V DC IP67, without female connector OPTIONS Viton = With Viton seals SUB-PLATE A-5-DM - 3 / Viton SERIES A-5-DM = Sub-plate...

MAINTENANCE DATA Mounting procedure - AMCA-valves shall not be mounted by overtightening ofmounting bolts, causing mechanical distortion and thus spool lock. - Mounting on flat surface, flatness 0,01/100. - Don’t use conical thread for port-fittings. - For sealing purposes, use O-rings. - Check the voltage andcurrent of the solenoids, before operation. - Avoid ingression of contaminants during mounting. Start-up procedure - Check the valve-function and thetightness of fittings etc. - Bleed by repeated energizing of solenoid(s). - Run the system to raise the fluid temperature. Rebleed to remove...