Z1 B1 B2 Z2 B3 B4. Steuerteil + 24 V. Leistungsteil K1 K2 K1 K2. Practice for Professionals Electropneumatics Trainee s manual. Version 1.

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1 04 Z1 B1 B2 04 Z2 B3 B Y Y Steuerteil + 24 V B1 S0 K1 B2 K2 B4 K3 B3 Leistungsteil K4 K1 K2 0V K1 K2 K1 K3 K2 K4 K3 Y1 K3 Y2 Practice for Professionals Electropneumatics Trainee s manual Version 1.2

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3 Electropneumatics 1 Practice for Professionals Electropneumatics Trainee s manual Editor: Bosch AG Hydraulics Training & Didactic Author: L. Zipfinger Reproduction, copying, or translation of this publication, wholly or in part, only with our previous written permission and with source credit. We assume no responsibility for agreement of the contents with local laws and regulations. Bosch AG is exempt from liability, and reserves the right to make changes at any time. 1 st edition Version 1.2 R Copyright 2002 Bosch AG

4 Electropneumatics 2 Overview of exercises Exercises Topic Exercise A1 Pilot control of a single-acting cylinder with spring return valve 5 Exercise A2 Pilot control of a double-acting cylinder with spring return valve 6 Exercise A3 Holding-element control of a double-acting cylinder with impulse valve, directly controlled 7 Exercise A4 Holding-element control of a double-acting cylinder with impulse valve, relay 8 Exercise A5 Basic circuit with AND Function 9 Exercise A6 Basic circuit with OR Function 10 Exercise A7 Basic circuit with electric latching circuits 11 Exercise A8 Displacement-dependent control of a double-acting cylinder with 1 electric limit switch 13 Exercise A9 Displacement-dependent control of a double-acting cylinder, impulse valve, cylinder switch 15 Exercise A10 Displacement-dependent control of a double-acting cylinder with spring return valve, cylinder switch 17 Exercise A11 Stop control of a double-acting cylinder with a 5/3 directional control valve in closed mid-position 19 Exercise A12 Time-dependent control of a double-acting cylinder with switch-on time delay 21 Exercise A13 Time-dependent control of a double-acting cylinder with switch-off time delay 23 Exercise A14 Pressure-dependent control of a double-acting cylinder 25 Exercise A15 Two-hand safety control, electric 27 Exercise A16 Sequential control of 2 double-acting cylinders with impulse valve 29 Exercise A17 Sequential control of 2 double-acting cylinders with impulse valves and signal overlapping 31 Exercise A18 Sequential control of 2 double-acting cylinders with spring return valves and step sequence 33 Exercise A19 Sequential control of 3 double-acting cylinders with impulse valves and step sequence 35 Exercise A20 Sequential control of 3 double-acting cylinders with spring return valves and step sequence 38

5 Electropneumatics 3 List of Components Components required from the Basic Kit Pneumatics, Order No Qty. Description Order No. Comp. No. 1 Air service unit with 3/2 directional control ball valve, G 1/8, bar Distributor, 6-fold, self-locking couplings Cylinder, single-acting with return spring, Ø = 25 mm, stroke = 50 mm Cylinder, double-acting, with adjustable spring cushioning and for proximity switching, Ø = 25 mm, stroke = 100 mm One-way flow control valve G 1/8, hose version Quick exhaust valve G 1/4" Blanking plug, tube diameter 4 mm --- 5m Plastic tubing 4 x 1; calibrated on the outside; PU black --- 2m Plastic tubing 6 x 1; calibrated on the outside; PU black Tube cutter for plastic tubes Extension kit for Electropneumatics, Order No , boxes with tandem snap-in Qty. Description Order No. Comp. No. 1 3/2 direct. control valve M5, electric. controlled, closed neutral position, with solenoid /2 directional control valve G 1/8, electrically controlled, with solenoid /2 direct. control valve G 1/8, electrically controlled impulse valve, with 2 solenoids /3 direct. control valve G 1/8, electric. contr., mid-position closed, with 2 solenoids Relay 24 V DC, 4 changeover contacts, with LED display Timing relay 24 V DC, switch-on delay, 1 n.c.c./1 n.o.c., with LED display, s Timing relay 24 V DC, switch-off delay, 1 n.c.c./1 n.o.c., with LED display, s control switch, 2 push buttons, each 1 n.c.c./1 n.o.c Cylinder switch with holder, 1 normally open contact, visual display, protective circuit Electric limit switch with roller lever, 1 changeover contact P/E pressure switch, 1 changeover cont., adjustable response press., pe = bar Display unit, 4 LED displays, 1 acoustic signal Electric manifold, 10 x + pole, 10 x - pole

6 Electropneumatics/PLC/Control Technology Tasks 4 Carrier elements, kits and accessories Description Built-in power supply unit 230 V AC, 24 V DC, for mounting in the DS3 side plate, max. 4.5 A, regulated, short-circuit-proof, two pairs of safety sockets, power switch Order No Power supply unit 230 V AC, 24 V DC, regulated, short-circuit-proof, max. 3 A Set of cables for electropneumatics Basic kit Pneumatics Grooved plate LT DS3 basic frame Grooved plate ERGO Electro-attachment S Mobile file Writing pad Information board (A4 page holder) Digital multi-measuring device

7 Electropneumatics 5 Task for exercise A 1, sheet 1 of 1 Command-variable control of a single-acting cylinder with spring return valve Task Pneumatic circuit diagram When push button S1 is actuated, assuming that the switch S0 is "on", the piston rod of the single-acting cylinder Z1 should extend and remain extended as long as button S0 remains actuated. The pneumatic circuit diagram is to be drawn up using symbols and port identification symbols according to ISO 1219 and RP68P. The detached representation of the electric circuit diagram is presented or supplemented using the circuit symbols of electric equipment according to DIN/ISO. Z Electric circuit diagram S V 0V Conclusion To electrically control a single-working cylinder, an is principally used. Corresponding to the basic setting of the single-acting cylinder, either an electrically controlled 3/2 directional control valve in neutral position or in neutral position or a 3/2 directional control valve is chosen.

8 Electropneumatics Tasks 6 Task for exercise A 2, sheet 1 of 1 BIB Command-variable control of a double-acting cylinder with spring return valve Task Pneumatic circuit diagram When push button S1 is actuated, assuming that the switch S0 is on, the piston rod of the double-acting cylinder Z1 should extend and remain extended as long as button S0 remains actuated. The pneumatic circuit diagram is to be drawn up using symbols and port identification symbols according to ISO 1219 and RP68P. The detached representation of the electric circuit diagram is to be presented or supplemented with the circuit symbols of electrical equipment according to DIN/ISO. Z Electric circuit diagram S V 0V Conclusion It is standard to apply an to electrically control a double-acting cylinder. In the case of spring return (mono-stable) 5/2 directional control valves, the voltage must be applied to the valve solenoid as long as the cylinder piston is to be.