The ramp is normally enabled but can be selectively disabled by suitable wiring to an external switch.

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1 Vickers Amplifier Cards Power Amplifiers for Proporional Valves EEA-PAM-56*-A-14 Design EEA-PAM-561-A-14 for use wih valve ypes: KDG5V-5, * and KDG5V-7, 1* series EEA-PAM-568-A-14 for use wih valve ypes: KDG5V-8, 1* series General Descripion This basic amplifier is designed for driving Vickers ype KFDG5V-5/7/8, 2-sage proporional valves in applicaions requiring only one (adjusable) ramp seing for boh acceleraion and deceleraion. Analog command inpu signals can be non-invering curren, or non-invering, invering or differenial volages. The amplifier requires a power supply of 24V DC and is enabled by a 24V logic signal. The ramp is normally enabled bu can be selecively disabled by suiable wiring o an exernal swich. The amplifier fron panel conains LEDs showing he saus of power, conrol supply and oupus. Poeniomeers for adjusing ramp, deadband compensaion and gain are also mouned in he fron panel. Feaures Basic valve amplifier Volage and curren command signals 1 ramp for acceleraion and deceleraion 24V DC power supply Pulse-widh-modulaed coil drives 14-design Feaures Wider supply volage range plus increased olerance o ripple Low supply volage proecion Addiional monior poins on edge connecor Gain re-posiioned in circuiry o give: Ramp seing unaffeced by gain adjusmen Consan rigger volage for deadband compensaion Fron Panel LEDs Poeniomeers [1] 24V power supply inpu, green [2] 15V conrol supply oupu, green [] Oupu (solenoid) enabled, yellow [4] Overload, red [5] LVDT failure, red [6] Oupu level o solenoid, yellow [7] Deadband compensaion; owards flow from main-sage service por (A or B) neares LVDT [8] Deadband compensaion; owards flow from main-sage service por (B or A) furhes from LVDT [9] Gain; flow from service por (A or B) neares LVDT [10] Gain; flow from service por (B or A) furhes from LVDT [11] Ramp 24V 15V [12] Monior poin, condiioned command signal [1] Common ground (0V) [14] Monior poin, LVDT (spool) posiion Ø 2 ( dia.) sockes Warning: Elecromagneic Compaibiliy (EMC) This produc does no conform o he European Communiy direcives for elecromagneic compaibiliy (EMC). I is only suiable for use wihin he European Economic Area in a sealed elecromagneic environmen or as a spare for an exising machine. (Ref. UK Elecromagneic Compaibiliy Regulaions 14 & 18, 1995.) February 1996 GB-2101A

2 Valve Wiring Connecions Solenoid Connecions z26 (or z28) z28 (or z26) Pin 2 LVDT plug pin Pin Pin 4 Pin 1 Amplifier pin 1 b14 2 b16 4 No conneced No connecion Noe: Connecions no polariy sensiive LVDT Connecions Operaing Daa Power (inpu) supply Conrol (oupu) supplies: z2 b2 Command signal inpus: Direc volage pins b8, b6, z8, b10 Invering volage pin Volage range Inpu impedance (volage) Curren pin Curren range Inpu impedance (curren) Sanding solenoid curren a zero command signal Noe: A posiive signal o a non-invering signal pin reduces solenoid curren Deadband compensaion, separae conrols for each direcion from spool-cenered posiion: Adjusmen per direcion from cenered posiion Gain, separae conrols for each direcion from spool-cenered posiion: Adjusmen per direcion from cenered posiion Ramp ime adjusmen, linear: Adjusmen range Diher Feedback from LVDT o b14 Overload proecion, facory-se 20 o 4V DC x 40W max. 24V DC nominal <4V pk-o-pk ripple Amplifier shus down below 19V +15V x 50 ma max. in addiion o LVDT demand +10V x 5 ma max. 10V x 5 ma max. 10V 47 kω 20 ma 100Ω 1,4A 10% of max. sroke 0 o 50% of max. sroke Max. spool sroke a 10V command signal 1,9 o 20% of max. spool sroke per 1 vol Max. ime 50 ms o 2s, under pre-se deadband compensaion and gain condiions specified above Facory-se 4 o 20 ma (100Ω) Auomaic rese when faul removed Oupu enabled (power available o solenoid) z24 Apply 10 o 0V (6.8 kω) Oupu disabled (no power oupu o solenoid) z24 Apply 0,8V or open circui Ramp enabled (machine acuaor acceleraion and deceleraion limied by ramp poeniomeer) b12, b20 Open circui beween b20 and b12 From spool-cenered posiion Coninued on nex page 2

3 Ramp disabled (fases acceleraion and deceleraion of machine acuaor; ramp circui bypassed) b12, b20 Link b20 o b12 Command signal monior poin Spool posiion monior poin fron panel and z18 Monior poin impedance fron panel and b18 Monior poin proecion 5V full scale. Command signal condiioned by deadband compensaion, gain and ramp funcions 5V full scale 10 kω Shor-circui proeced Oupu poin o alarm indicaor z12 >+6V when enabled < 6V when disabled Ambien emperaure range 0 o 50C (2 o 122F) Mass Supporing producs: Power supply uni opions Elecronic accessories Porable es equipmen 0,22 kg (0.48 lb) See caalogs: and 215

4 Circui and Connecions + z2 b2 47 k +10V; 5 ma 10V; 5 ma +15V; 50 ma Curren command b6 b8 b10 z8 Inv. volage 100 Volage commands 24V Ramp 15V A Oupu enable Overload B low volage Gain A B Diher PWM +24V Power zero Oupu enable Power sage zbd2 zbd0 z12 z24 z28 z26 Oupu 24V DC power supply Monior drive oupu Close o enable oupu b4 z4 Conrol zero Ramp enable Deadband compensaion Curren sensing LVDT fail b14 b16 b20 b12 b18 z18 bz16 Link o disable ramp Command signal monior poin (condiioned) on fron panel LVDT signal monior poin on fron panel Cable screen Command Signals and Oupus Command signals Type Inpu pins Secondary pins ref. Ref. Signal polariy Non-invering volages b6/8/10 or z8 bz4 Non-invering curren Invering volage Link one of b6/8/10 or z8 o bz4 Differenial volage One of b6/8/10 or z8 One of b6/8/10 or z8 Valve flow 4

5 Insallaion Dimensions mm (inches) Plug-in Uni of U Heigh, o IEC 297 rd angle projecion DIN F48 male connecor 7,92 (0.1) M2,5 x 11 (0.4) long collar screws supplied wih panel for fixing 2,5 (0.1) z - pin row b - pin row d - pin row Componens envelope 122,4 (4.82) Model designaion (0.12) (0.12) 7,45 (0.29) 40, (1.59) 128,4 (5.06) 7,2 (0.28) 8 (0.1) 14 (0.55) 14,2 (0.56) 175,24 (6.90) 100 (.94) 5

Power Amplifier EEA-PAM-5**-A-32 for Proportional Control Valves Contents The following power amplifier models are covered in this catalog

Vickers Accessories Power Amplifier EEA-PAM-5**-A-32 for Proporional Conrol Valves Conens The following power amplifier models are covered in his caalog Power Amplifier EEA-PAM-513-A-32 EEA-PAM-523-A-32