AN238 Servo Amplifier - PEES COMPONENTS
AN238 Servo Amplifier - PEES COMPONENTS
AN238 Servo Amplifier - PEES COMPONENTS
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<strong>PEES</strong><br />
<strong>COMPONENTS</strong><br />
<strong>AN238</strong> <strong>Servo</strong> <strong>Amplifier</strong><br />
The <strong>AN238</strong> servo amplifier has been designed for the control of axial piston pumps<br />
valves in conjunction with servo valves.<br />
The module can be used as a pressure controller (zero stroke pump) or a volumetric<br />
flow controller by changing jumpers.<br />
Features:<br />
• linear output stage<br />
• protected against wrong polarity<br />
• different inputs for the most common input voltages. 1 user-selectable input (10k Ω/V),<br />
1 ±10V differential input<br />
• ramp can be disabled externally<br />
• quadrant-sensitive ramp with wide range of adjustment (0.2...10sec)<br />
• external enable (normally closed circuit)<br />
• external controller enable<br />
• adjustable pressure controller<br />
• LED indicators for 'Power on', 'Ramp off', 'Fail safe', 'Ctrl on'<br />
• potentiometers on the front plate for setting ramp times, Qmax and controller P and I<br />
components<br />
• monitoring of pressure sensor and angular resolver on pump yoke<br />
• logic output for malfunctions
<strong>AN238</strong> <strong>Servo</strong> <strong>Amplifier</strong><br />
Pump pressure<br />
Swivelling anlge<br />
pump yoke<br />
P<br />
A<br />
I<br />
Pressure sensor<br />
4...20mA<br />
B<br />
P<br />
I<br />
+24V<br />
+24V<br />
z10<br />
b2<br />
b24<br />
z24<br />
b26<br />
z26<br />
TP9<br />
TP10<br />
J5<br />
J6<br />
-<br />
+<br />
Filter<br />
p (bar)<br />
TP1<br />
TP2<br />
Power on<br />
DC<br />
DC<br />
b12<br />
b22<br />
d12<br />
d22<br />
+10V<br />
-10V<br />
+15V<br />
-15V<br />
Reference<br />
Reference<br />
J8<br />
J7<br />
Error A<br />
Error B<br />
v<br />
Angular rotation sensor<br />
External actual value<br />
b32 MF AC<br />
b30<br />
b28<br />
z28<br />
5kHz DC<br />
J13<br />
P1<br />
P I<br />
Regler<br />
I1<br />
J10<br />
J9<br />
Power supply<br />
d4<br />
+24V<br />
dbz16/18<br />
0V<br />
d6<br />
Ground<br />
Differential input<br />
+/-0...10V<br />
User selectable 10k Ω/V<br />
Stop<br />
Control on<br />
Ramp off<br />
d26<br />
d30<br />
d32<br />
b8<br />
z2<br />
b10<br />
+<br />
-<br />
-<br />
J14<br />
J15<br />
J1<br />
up down Qmax<br />
Command Sig.<br />
J16<br />
J3<br />
J2<br />
TP5<br />
Valve Current<br />
d8<br />
d10<br />
b4<br />
d2<br />
b6<br />
<strong>Servo</strong>valve<br />
+/-300mA<br />
Valve current<br />
1V = 100mA<br />
For external valves<br />
Malfunction<br />
<strong>AN238</strong> servo amplifier for pump control<br />
02.03.99 Rev.01<br />
Technical data:<br />
Dimensions<br />
(overall dim.)<br />
Eurocard format (160x100)mm<br />
(40.5x128.7x189.7)mm (WxHxD)<br />
Front plate 3HUx8SU<br />
Signal inputs<br />
1x ±10V, 100k<br />
1x user selectable R201, 10k /V<br />
1x differential input<br />
Connection<br />
Supply voltage<br />
48 pole connector DIN 41612 F48<br />
24V DC (20...32V DC)<br />
Dither<br />
Factory setting approx. 200Hz.<br />
Amplitude fixed, approx. 10% of rated<br />
current.<br />
Auxiliary voltages ±10V, 20mA, stabilised<br />
±15V, 50mA, unstabilised<br />
approx. +24V, 80mA unstabilised<br />
Output current<br />
Imax = ±300 mA<br />
Short-circuit protection for reference voltages<br />
Inputs<br />
Pump yoke<br />
2x actual pressure 4...20 mA<br />
1x actual value ±5V<br />
Angular resolver (inductive or resistive),<br />
approx. 5kHz, evaluated directly<br />
by the module<br />
Ramp times<br />
Ramp off<br />
Enable<br />
Measurement<br />
sockets<br />
Ramp up/down independently adjustable,<br />
0.2...10sec 20%<br />
Input voltage 24V, 10k<br />
Indication via 'Ramp off' LED<br />
Normally closed circuit<br />
Input voltage 24V, 10k<br />
Indication via 'Fail safe' LED<br />
Valve current 1V = approx. 100mA<br />
Command signal ±10V<br />
Pressure: system dependent<br />
Torque: system dependent<br />
Slewing angle: system dependent<br />
Subject to change without notice<br />
<strong>AN238</strong>V06-230799Rev03 •
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