This power amplifier has been developed to control proportional valves with one solenoid. This compact solution is mounted in an inexpensive IP 65 housing.

The power plug is designed for digital communication via an IO-LINK interface. The setpoints, the parameterization and the diagnostics are completely realized via this simple interface. Their advantage is the simple and inexpensive cabling and the use of universal tools for parameterization. Via the free parameterization of the power output stage, this module can be adapted to proportional valves from different manufacturers. The output current is closed loop controlled and thus independent of the supply voltage and the solenoid resistance.

Together with the IOA-312 adapter, the module can also be used without a PLC.

This module is used for the control of one directional valve with two solenoids or one/two independent pressure or throttle valves with one solenoid each. Various adjustable parameters allow for an optimized adaptation to the respective valve. The integrated power amplifier with a short cycle time of 0,125 ms for the current loop is an inexpensive and space-saving solution.

FUNCTION MODES:

195: The amplifier can be used to control one directional valve. The current is controlled by a +/- 10 V (or 4… 20 mA with cable breakdown monitoring) input signal.

196: This one can be used to control one/two throttle or pressure valves independendly. The output current is controlled by 0… 10 V (or 4… 20 mA with cable breakdown monitoring) input signal.

197: The amplifier can be used to control proportional valves with one or two solenoids by three digital input signals to select up to eight pre-programmed command and ramp values.
The output current is closed loop controlled and therefore independent of the power supply and the solenoid resistance. The output stage is monitored for cable breakdown, short-circuit proof and disables the power stage in case of an error.
RAMP times, MIN and MAX, DITHER (frequency and amplitude) and the PWM frequency are programmable. In addition, the valve characteristics can be linearized via 10 XY-points. For example: Using pressure valves, a linear behavior between input signal and pressure can be reached.

This module is used for controlling one directional valve with two solenoids or up to two throttle valves with one solenoid. The functionality corresponds to the standard PAM-199-P, with the difference that the analog interfaces are omitted and the module is controlled directly via a fieldbus like EtherCAT or ProfiNet (in preparation).

The advantage of fieldbus-capable power amplifiers is the more simple integration into the machine control, the better diagnosis possibilities, the cabling, the possibility of automatic parameterization in case of a device exchange and the significantly lower total costs (analog and digital IOs can be omitted on the control side).

This module is used for controlling one directional valve with two solenoids or up to two throttle valves with one solenoid. The functionality corresponds to the standard PAM-199-P, with the difference that the module is controlled directly via the Profibus or ProfiNet interface.

Defined parameters are programmable via the fieldbus. The output current is closed loop controlled and therefore independent of the power supply and the solenoid resistance. The output stage is monitored for cable breakdown, short-circuit proof a

nd it disables the power stage in case of an error.

RAMP times, MIN and MAX, the DITHER (frequency and amplitude) and the PWM frequency are programmable.

In addition, the valve characteristics can be linearized via 10 XY-points. For example: using pressure valves a linear behavior between input signal and pressure can be reached.

This module is used for the control of proportional valves with one or two solenoids. Various adjustable parameters enable an optimized adaptation to the respective valve. This power amplifier is inexpensive and a space-saving solution.

The amplifier can be controlled by different voltage or current input signals.
The output current is closed loop controlled and therefore independent of the supply voltage and the solenoid resistance.

Several potentiometers and DIL switches allow the adaption to valves of various types of valves.

Command value and feedback value are read in via free scalable analog inputs (voltage signals in the range of 0… 10V or +/-10V respectively current signals in the range of 4… 20mA). The output current is closed loop controlled and therefore independent from the power supply and the solenoid resistance. The output stage is monitored for cable breakdown, is short circuit proof and disables the power stage in case of an error.

RAMP, MIN and MAX, the DITHER (frequency and amplitude) and the PWM frequency are programmable.

In addition, the valve characteristics can be linearized via 10 XY-points.

This power amplifier is used to control proportional valves with one solenoid. The compact solution is implemented in an inexpensive IP-65 housing. Optionally, the amplifier can be mounted directly with DIN plug (PAM-190) or with separate housing (PAM-140).

A typical input signal of 0… 10 V (optional 4… 20 mA) can be used.

The output current is closed loop controlled and therefore independent of the supply voltage and a varying solenoid resistance.

The parameterization can be done via the PC interface by the ULA-310 adapter or internally via the UP and DOWN buttons.

Via the free parameterization of the power amplifier, all typical proportional valves of the different manufacturers can be adapted.

This module was developed for the control of hydraulic servo valves.

The amplifier is controlled by a ±10 V signal. The output current can be adapted via DIL switches between 10 mA and 200 mA.

This device provides a positive reference voltage as well as a negative one (+10 V and -10 V).

Dither and offset settings are realized with potentiometers.

This module is used for the control of proportional valves with one or two solenoids. Various parameters allow an optimized adaptation to the corresponding valve. The integrated power amplifier with a control/cycle time of 0,125 ms is inexpensive and a space-saving solution.

This amplifier is controlled via switching inputs.

The switching inputs are assigned freely programmable demand values, which are approached via the ramp function when the corresponding switching signal is activated. Optionally, the last stored value can be used as command value after switching on and activating.

The output current is closed loop controlled and therefore independent of supply voltage and solenoid resistance. The current output is observed with regard to cable breakdown and over current (short circuit) and switches off in case of detected errors.

This module is used for the control of a directional valve with two solenoids or a pressure or throttle valve with one solenoid. Various adjustable parameters allow an optimized adaptation to the respective valve. The integrated power amplifier with a short cycle time of 0,125 ms for the current loop is an inexpensive and space-saving solution.

Additionally to the amplifier function, a power limitation functionality via pressure measuring was implemented. A simple unipolar output (0… 10 V / 4… 20 mA) or a bipolar signal from +/- 10 V can control this amplifier. The polarity can be switched by a digital input, too.

The output current is closed loop controlled and therefore independent of the power supply and the solenoid resistance. The output stage is monitored for cable breakdown, short-circuit proof and it disables the power stage in case of an error.

RAMP times, MIN and MAX, DITHER (frequency and amplitude) and the PWM frequency are programmable. In addition, the valve characteristics can be linearized via 10 XY-points.