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General applications of the amplifier card for driving proportional directional valves and flow control valves.
Cost-effective applications using serial interface or ABG35S without front panel display.
Explanation of symbols used in the manual for warnings and notes.
General guidelines for connecting the VRD350/VRD355 series amplifiers, suitable for industrial surroundings.
Description of the front panel layout and indicators for VRD350 and ABG35S units.
Details on using the ABG35S plug-in control unit with the VRD355 amplifier.
Step-by-step guide for setting U, S, P, and E parameter values using the front panel keys.
Block diagram illustrating the signal flow for open loop control functions.
Description of test sockets for measuring solenoid currents and actual values.
Explanation of internally computed values displayed on the 7-segment display for diagnostics.
Adjusting command signals and ramp times using S-parameters.
Using H-parameters for commissioning and command signal simulation.
Setting operating parameters (P-parameters) to match the amplifier to the valve or drive.
Extended parameters for amplifier setup, generally factory preset.
Description of internal and external command signals, their selection and additive properties.
Setting independent ramp times for command signal changes and characteristic assignment.
Adjusting the offset parameter to correct drive drift and set positioning to zero.
Available curves for linearizing flow characteristics of different valve types.
Setting current gain independently for solenoids A and B for balancing.
Adjusting dither amplitude and frequency to reduce valve hysteresis.
Details on the pulse width-modulated solenoid drive and PI characteristic controller.
Information on PWM output stages, pulse frequency, and solenoid type settings.
Adding step-like command signals to overcome control edge overlap in spool valves.
Feedback signals, their adjustment, and selection for different valve types and control loops.
Procedure for setting the zero point of feedback transducers and gain adjustment.
Explanation of controller parameters P13-P16 and their relationship with E2 and E14.
Function of comparators and comparative values, setting window center and output delay.
Details on remote operation and parameter setting via the serial interface and software.
Information on the ABG35S plug-in control panel for parameter display, setting, and storage.
Description of the ENABLE signal, its LED indicator, and electrical isolation.
Function of the RESET RAMP input for setting the ramp function generator to zero.
Information on output stage monitoring, error signals, and possible fault messages.
Description of the comparator output signal, its LED indication, and protection.
Explanation of how external command signals and directions are selected and indicated.
Schematic showing the wiring for proportional DC valves in an open loop configuration.
Wiring diagram for proportional DC valves with spool position feedback.
Schematic for proportional pressure control valves in an open loop configuration.
Wiring diagram for proportional pressure control valves in a closed loop configuration.
Schematic for proportional flow control valves in an open loop configuration.
Wiring diagram for proportional flow control valves in a closed loop configuration.
Wiring diagram for proportional DC valves in an external closed loop configuration.
General