Power Amplifier - Eaton

1 Vickers . Accessories Power Amplifier EEA-PAM-5**-A-32 for Proportional Control Valves Contents General Description p The following Power Amplifier models are covered in this catalog The Power Amplifier has five voltageg i inputs t (one ( inverting). i ti ) andd a currentt Power Amplifier For Proportional Valve in ut for 0. input 20 m 0-20 Adjustments djustments for set EEA-PAM-513-A-32 KCG-3, 1* series zero point or deadband compensation KCG-6/8, 1* series and for gain allow the Amplifier to be KX(C)G-6/8, 1* series easily tuned to the proportional control valve The ramp function valve. f nction generator can EEA-PAM-523-A-32 *, 6* series be switched on and off using the ramp *, 6* series enable control. KDG5V-5/7/8, 1* series Monitor points on the front panel allow EEA-PAM-525-A-32 *, 3* series measurement of the conditioned *, 3* series g command signal, and either of spool position iti LVDT signal i l or (for (f valves l EEA-PAM-533-A-32 KFTG4V-3, 2* series without LVDT) of solenoid current.)

2 KFDG4V-3, 2* series (( Conditioned Conditioned command signal . signal is the EEA-PAM-535-A-32 KFTG4V-5, 2* series input signal modified according to KFDG4V-5, 2* series settings of set zero point or deadband compens tion g compensation, gain in and nd rramp mp EEA-PAM-541-A-32 KHDG5V-5/7/8, 2* series functions.). With zero-lapped main spool EEA-PAM-553-A-32 KSDG4V-3, 1* series F t Features F User-friendly U f i dl ffrontt panell with ith allll th the EEA-PAM-561-A-32 KFDG5V-5, 3* series necessary adjustments, LEDs and KFDG5V-7, 1* series monitor points oints EEA-PAM-568-A-32 KFDG5V-8, 1* series F Electronic overload protection with a tomatic reset automatic EEA-PAM-571-A-32 CVU-**-EFP1-3* F Pulse width modulation for high g efficiency ffi i EEA-PAM-581-A-32 KHDG5V-5/7/8.)

3 2* series F Can be equi equippeded with plug-in lug-in modules for special functions F Switchable ramp function generator for controlling rates of increase and decrease of output F 24V DC Power supply F Either current or voltage input signals F Standard input and output signals This product has been designed and tested to meet specific standards outlined in the European Electromagnetic Compatibility Directive (EMC) 89/336/EEC, amended by 91/263/EEC, 92/31/EEC and 93/68/EEC, article 5. For instructions on installation requirements to achieve effective protection levels, see this leaflet and the Installation Wiring Practices for Vickers Electronic Products leaflet 2468. Wiring practices relevant to this Directive are indicated by Electromagnetic Compatibility (EMC).

4 Rev. March 1996 GB-2464. Front Panel Model 523, 525, 533, 535, 561, 568 and 581 513. LEDs [1] 24V supply voltage, green [2] 15V control voltage, green 24V 15V 24V 15V. [3] Solenoid output enabled, yellow [4] Solenoid output overload, red [5] LVDT failure, red [6] Drive to solenoid, yellow Potentiometers Potentiometers [7] Deadband compensation, flow from P to B [17] Zero adjust [8] Deadband compensation, flow from P to A [18] Gain [9] Gain, flow from P to B. [10] Gain, flow from P to A. LED. [11] Ramps enabled, yellow Potentiometers [12] Acceleration ramp [13] Deceleration ramp t t Monitor points Y Monitor point Y. t t [14] Conditioned command signal MP1 [19] Solenoid current MP2. [15] Common ground 0V. [16] Spool position MP2.

5 (except for 523/525: solenoid current). 541, 553 571. 24V 15V 24V 15V. Potentiometer Potentiometers [20] Adjust valve zero [21] Deadband compensation [22] Gain t t t t Y 2 mm ( dia.) sockets Warning: Electromagnetic Compatibility (EMC). It is necessary to ensure that the unit is wired up in accordance with the connection arrangements shown in this leaflet. For effective protection, the user's electrical cabinet, the valve subplate or manifold and the cable screens should be connected to efficient earth (ground) points. The metal 7-pin connector part no. 934939 should be used for the integral Amplifier . In all cases, both valve and cable should be kept as far away as possible from any source of electromagnetic radiation such as cables carrying heavy current, relays and certain kinds of portable radio transmitters, etc.

6 Difficult environments could mean that extra screening may be necessary to avoid the interference. 2. Electrical Block Diagram EEA-PAM-523/525-A-32. 533/535. 561/568. 571 Note: This is a typical diagram and all the features depicted may not be applicable 581 to all amplifiers, ( LVDTs and dither). EEA-PAM-513-A-32. z22 +15V; 50 mA 15V Gain b32 +. z2 +10V; 5 mA. 24V z32. b2 10V; 5 mA Ramps b30 24V DC. b22 15V; 50 mA. z30. 24V. z12 Alarm output z24. 24V. b20 Drive zero signal indicator Close to enable drive b12 Ramp active indicator Zero Overload Enabled Enable ramps point z6 100 . Gain 47k A B. b6. Ramps b8 Acc. Dec. z28. b10 z26. z8 EEA-PAM-541-A-32. A B b28 553. z10 Controller b26. b4. z4 Enable ramps Deadband compensation z22 Zero point Solenoid +15V.

7 Current z14. b24. MP 1 LVDT z16. b18 Command signal monitor point pilot b14. z18 Output monitor point LVDT b16. main MP 2. Command Comm nd signals sign ls and nd outputs o tp ts All models except 553 and nd 571 553 571. Non-inverting voltage Non-inverting current Inverting voltage Secondary pins Output b6/8/10 or z8 z6 z10. bz4. bz4 Valve P to A P to B. bz4 closed N/A. bz4. bz4 A to B. P to B P to A and nd bz4 B to A. N/A. 3. Operating Data Power supply: Nominal 24V DC x 50W. Vmin. - Vmax. 20 - 40V (incl. ripple 10% max.). Amplifier shut-down <18V DC. Protection Reverse-polarity Signal sources: z22 & b22 15V x 50 mA max. ( ripple 50 mV). z2 & b2 10V ( 1%) x 5 mA max. ( ripple 20 mV). Temperature drift 1 mV/_C ( 0,5 mV/_F) 0-50_C (32 - 122_F).

8 All outputs short-circuit protected Command inputs Voltage: Direct-V b8, b6, z8 & b10. Inverting-V z10. Umin. - Umax. 0 10V. Input z 47 k . Current z6: Range, I 0 20 mA. Input z 100 . Power drive = PWM short-circuit protected Max. solenoid current See table on next page Current at zero (0V command signal on MP1) See table on next page Dither Factory-set Deadband compensation See table on next page Gain See table on next page Ramp-time adjustment: Factory setting Min. 50 ms min. - max. 50 ms - 5s min. - max. 50 ms - 5s Overload detection Automatic reset Drive: Enabled z24 9,8 - 40V. Disabled z24 Open circuit or 4,5V. Input z 22 k . Ramps: Enabled b24 9,8 - 40V. Disabled b24 Open circuit or 4,5V. Input z 22 k . Command signal monitor point: Front-panel MP1 & b18 Monitor signal after deadband compensation (minimum setting), gain and ramps: 0 - 10V (10V = ^ Imax.)

9 Output z 10 k short-circuit protected Output monitor point : Front panel MP2 & z18 513/523/525 (without LVDT): 1 V/A. Other types (with LVDT): 10V at full stroke Output z 10 k short-circuit protected 4. Ramp-active indicator b12. Output 10V. Output 10V. Output = 0V ( 2V ripple). Output z 10 k . Drive signal zero indicator b20. Drive signal at null (within deadband limits) Output = Supply minus 1,5V; I = 50 mA max. Drive active Output = 0 2V. Output resistance z 50 . Alarm output z12. Set alarm Enable Amplifier (on pin z24) when switching Power on Signal HIGH when alarm is activated: Output = Supply volts minus 2 volts; l = 50 mA max. LOW when solenoid overload has occurred (maintained until reset): Output = 0 to +/ 2 volts; Output impedance = 50.

10 Reset after failure Disable and re-enable on pin z24. Ambient temperature range 0 - 50_C (32 - 122_F) full specification Edge connectors DIN 41612 F48 on board for card holder F32 or F48. 330g ( lb). Installation recommendations leaflet, packed with Amplifier ML-9160. Supporting products (see appropriate catalog): Power supply 3,5A EHA-PSU-704-A3-20. 5,0A EHA-PSU-704-A5-20. 10,0A EHA-PSU-704-A10-20. Test adaptor EBA-TEQ-706-A-10. Portable test equipment EHA-TEQ-700-A-20. EBA-TEQ-706-A-10. Cardholder D32 02-104806. F32 02-104807. F48 02-104808. Edge connector F48 732683. Model 513 523 533 535 541 553 561 571 581. 525 568. Max. solenoid current 1,6A 1,6A 2,7A 2,7A 3,2A 3,2A 1,8A 2,9A 3,2A. Amplifier input current at 0V command signal (MP1) 0,3A 0,3A 0,3A 0,3A 1,7A 1,7A 1,4A 1,1A 1,7A.