153 → www.festo.com/didactic Pneumatics/Hydraulics Training Packages > Components > Control and Regulating Electronics Control and Regulating Electronics 1 Proportional amplifier The amplifier is used to control proportional valves. The amplifier is designed in such a way that either two independent solenoids (1 channel) or a valve with two solenoids (2 channels), e.g., a 4/3-way proportional valve, can be controlled. The proportional amplifier therefore works either like two single-channel amplifiers or like a 2-channel amplifier. The inputs are short-circuit-proof and voltage-proof up to 24 V. – Setpoint values: ±10 V DC, in steps of 100 mV – Switching signal for internal setpoint values: 15 – 30 V DC – Solenoid outputs: PWM signal, 24 V, max. 1 A – Switching signal for release: 15 – 30 V DC – Base current, step current: 0 – 250 mA, in increments of 1 mA – Maximum current: 100 mA – 1 A, in steps of 5 mA – Dither frequency: 100 – 250 Hz, in steps of 1 Hz Order no. 162255 2 Setpoint value card The setpoint value card has the following functions: – Programmable setpoint generation – Programmable ramp generation – Cyclic sequence of setpoint values – and ramps – Stopwatch – Number of setpoint values: 8 – Output voltage range: –10 V – +10 V tol. ±5 mV (adjustable in 0.1 V steps) – Number of ramps: 4 – Ramp times: 0 – 10.0 s/1 V (adjustable in 50 ms/1 V steps) – Control voltage of the inputs: at least 15 V – Output rate: 1 kHz – Stopwatch: input 1, measuring time 0 – 100 h Order no. 162256 3 Comparator Positive switching comparator with switching differential. The inputs are short-circuit-proof and voltage-proof up to 24 V. 2 separate inputs (IN A, IN B), each acting on two independent comparators. Adjustable values on each comparator: – Setpoint voltage (-10 - +10 V), hysteresis (0 - +5 V). – Input voltage (inputs A and B): -10 – +10 V – Input resistance (inputs A and B): > 10 kΩ – Display accuracy: ± 30 mV – Outputs A and B: Potential-free relay contacts, changeover contact – Contact load: 24 V DC/2 A and – 120 V AC/1 A Order no. 8185562 4 PID controller PID controller for pneumatic and hydraulic control loops. The closedloop controller includes the following functions: – Power supply – Differential inputs – Comparators – Control elements: Proportional element, integral element, differential element – Manipulated variable offset – Summation point – Limiter – Output Order no. 162254 5 Status controller The status controller is used as a controller of control circuits in fluid power positioning. The closed-loop controller includes the following functions: – Power supply – Differential inputs – Comparators – Control elements: Proportional element, integral element, differential element – Overall gain – Manipulated variable offset – Summation point – Limiter – Output Order no. 162253 2 5 4 3 1
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