Vickers(R) Valves Power Amplifier Type EEA-PAM-513-A; 14 Design For KCG-3, 10 Series Proportional Pressure Control Valves General Description Features The power amplifier has five voltage inputs (one inverting) and a current input for 0-20 mA. The "set minimum" and "gain" adjustments allow the amplifier to be easily tuned to the proportional pressure control valve. The ramp potentiometer on the front panel simultaneously adjusts the output acceleration and deceleration. The ramp function is normally enabled; it can be permanently disabled by an external wire link, or selectively enabled/disabled using a remotely located switch. F User-friendly front panel with all the Monitor points on the front panel allow measurement of the conditioned command input signal (after set minimum, gain and ramp functions) and of the solenoid current. The latter is scaled to give 1 volt per ampere. F F F F F F necessary adjustments, LEDs and monitor points Electronic overload protection with automatic reset Pulse width modulation for high efficiency Ramp function generator for control of pressure increase and decrease rates 24V DC power supply Either current or voltage input signals Standard input and output signals New 14-design Features F Wider supply voltage range plus increased tolerance to ripple F Low supply voltage protection F Additional monitor points on edge connector Gain re-positioned in circuitry to give: F Ramp setting unaffected by gain adjustment F Constant trigger voltage for deadband compensation Front Panel LEDs [1] 24V supply voltage, green [2] 15V control voltage, green [3] Solenoid output enabled, yellow 24V 15V max. [4] Solenoid output overload, red [5] Current output to solenoid, yellow Potentiometers [6] Set minimum [7] Gain [9] Ramp setting t Monitor points Y [11] Conditioned command signal [12] Common ground t t [13] Solenoid current Y O 2 (0.0787 dia.) sockets Warning: Electromagnetic Compatibility (EMC) The European Community directives for electromagnetic comptibility (EMC) do not apply to this product GB-2137C C.1 Operating Data Power requirements Output voltages for control 24V DC nominal x 40W Maximum voltage range: 20 - 34V (including ripple) <4V. pk.-to-pk. ripple Reverse polarity proitected Amplifier shuts down below 19V z22 z2 and b2 Command signal inputs Voltage inputs: Direct-voltage pins b8, b6, z8, b10 Inverting-voltage pin z10 Voltage range Input impedance Current input: Current pin z6 Current range Input impedance +15V x 50 mA; ripple <50 mV pk-to-pk "10V ("1%) x 5 mA 0 to 10V 47 k 0 to 20 mA 100 Power drive, pulse-width modulated (PWM): Maximum solenoid current 1,8A, short-circuit protected Dither Factory-set Set minimum pressure control: Factory setting Adjustment Zero solenoid current 0 to 1,0A solenoid current Gain control: Factory setting Adjustment Max. pressure at 10V command signal 0,06 A/V to 0,18 A/V Ramp time adjustment: Factory setting One adjustment for increasing and decreasing pressure Minimum (20 ms approx.) 20 ms to 2s with "set minimum" at zero Overload detection, factory set Automatic reset when fault removed Drive enable/disable: z24 Enable (power available to solenoid) Disable (no power to solenoid) +10V to +30V (>6 k) Open circuit or up to 0,8V to z24 Ramps enable/disable: b12, b20 Enable (valve switching rate limited by ramp potentiometer) Disable (fastest valve switching; ramp circuit bypassed) Command signal monitor points: front panel and b18 Output impedance Open circuit between b20 and b12 Connect b20 to b12 0 to 10V full scale. Command signal conditioned by "set minimum", gain and ramp function settings. 10 k; short-circuit protected Solenoid current monitor points: front panel and z18 Output impedance 1 V/A solenoid current 10 k; short-circuit protected Drive output status indicator: Drive enabled Drive disabled >+6V <-6V z12 Continued on next page C.2 Ambient temperature range 0 to 50_C (32 to 122_F) Edge connectors DIN 41612 F48 male type on the board. Mating connector can be F32 or F48 female type. Solenoid Connections Mass 200g (0.44 lb) Installation recommendations leaflet for electronic amplifiers ML-9046 Supporting products: Power unit Portable test equipment Cardholder (F32) Edge connector (F48) EHA-PSU-704-A/B-10 EHA-TEQ-700-A-20 Part no. 02-104807 Part no. 508178 b26 (or b28) No connection b28 (or b26) Note: Connections not polarity sensitive. Circuit and Connections z2 b2 z22 +10V 5 mA -10V 5 mA +15V 50 mA +24V 24V Power zero 15V zbd32 zbd30 Monitor drive output z12 Output enabled Overload low voltage z6 Current command + 100W b6 47kW b8 + b10 Set Gain minimum Voltage Ramp commands Output enable Close to enable output Dither Power stage z8 z10 b28 b26 Inv. voltage b4 z4 z24 24V DC power supply To solenoid PWM Output Control zero Customer's protective ground connection Current sensing Ramp enable b20 Link to disable ramp b12 b18 Command signal monitor point (conditioned) on front panel z18 Output solenoid current monitor point on front panel Note: Connect all shields/screens at card end only. C.3 Installation Dimensions in mm (inches) Plug-in Unit of 3U Height, to IEC 297 3rd angle projection DIN 41612 F48 male connector. See "Edge connectors" in "Operating Data" table Components envelope M2,5 x 11 (0.43) long collar screws supplied with panel for fixing 7,92 (0.31) z - pin row b - pin row d - pin row (Only rows z and b are used) 2,5 (0.1) 122,4 (4.82) 128,4 (5.06) 100 (3.94) Model designation 8 (0.31) 3 (0.12) 14,2 (0.56) 3 (0.12) C.4 7,45 (0.29) 40,3 (1.59) 14 7,2 (0.28) (0.55) 175,24 (6.90)