Description Component series 1X Analog, Connector design For valves: KBPS 8 Features Proportional command value/current characteristic curve for command values between 0 and 100% Regulated adjustable maximum current for command values greater than approx. 120% (for differential input only) Differential input Ramp generator with separately adjustable ramp times "up/down" Zero potentiometer / pilot current Command value attenuator / maximum current Dither frequency potentiometer 24 V operating voltage Product description The plug-in amplifier is suitable for installation on a valve connection base according to EN 175301-803. By turning the plug insert and the electronics in the housing, the plug-in amplifier can be mounted on the solenoid in 90° increments. Command value presetting The command value range is between 0 and UB. In the command value range 0... 10 V the solenoid current is proportional to the command value. Starting with a command value of 12 V up to UB the solenoid current is almost constant according to the Imax setting (switching application). Ramp generator The ramp generator (5) limits the incline of the control output. The up and down ramp times can be adjusted separately. In switching applications, the ramps can be used to dampen the switch-on and switch-off impulse (When switching off only with 3-conductor connection, i.e. switching signal and supply are connected separately). This behavior also depends on the valve and solenoid type. The downstream command value attenuator (4) has no influence on the ramp time. Characteristic curve Up to a command value of approx. 110 % the transfer characteristic curve rises linearly. The zero point can be corrected using potentiometer “Z“, the maximum value can be corrected using potentiometer “G“. Power output stage Output stage (7) is freely clocking. The clock frequency depends on the current level, the operating voltage and the impedance of the controlled solenoid. The clock frequency can be re-adjusted using potentiometer “f“. The current output stage generates a regulated current signal according to the control output provided by the summing device (3). If the clock frequency is too high, the valve hysteresis is increased. If the clock frequency is too low, the noise level of the hydraulic system is increased. ()= Assignment to the block diagram Type code 01 Valve amplifiers for proportional valves without electrical position feedback, Analog, Connector design VT-SSPA1 02 For valves: KBPS 8 5 03 Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions) 1X 04 Version: standard V0 05 Voltage input 0 06 24 V operating voltage 24 07 With cable gland No code With M12 connector K24 01 02 03 04 05 06 07 VT-SSPA1 ‒ 5 ‒ 1X / V0 ‒ 0 ‒ 24 / Technical data General Component series 1X Type of electronics Analog Design Plug-in connector Voltage supply Operating voltage Nominal U V 24 Lower limit value UB(t)min V 18 Upper limit value UB(t)max V 35 Cable inductance 1) ma
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