Power amplifiers

For proportional valves. Easy use with all proportional valve types. Highlight is an attractive price in conjunction with simplest handling. Thereby the digital PAM-199 is the most universal device with the largest range of functionality. And have look at the new PAM-199-P-ETC or PAM-199-P-PFN.


NEW: PAM-190-P-IO

Power plug with IO-LINK Interface

Typical applications:

  • Controlling proportional throttle and pressure valves as well as general inductive loads
  • replaces the analog interface with a universal IO-LINK interface
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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.

PAM-190-P-IO

IODD-PAM-190

General “IO-LINK” information


PAM-199-P

Power amplifier for all typical proportional valves

PAM-199-P

Typical applications:

  • control of directional, throttle and pressure valves, which need a flexible adaptation of the solenoid control

All typical proportional valves of the different manufacturers (BOSCH, REXROTH, PARKER, EATON …) can be controlled.

read more

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.

PAM-199-P


PAM-199-P-ETCPAM-199-P-ETC

Power amplifier with EtherCAT interface

Typical applications:

  • control of directional and pressure valves, which need a flexible adaptation

All typical proportional valves of the different manufacturers (BOSCH, REXROTH, PARKER, EATON …) can be controlled.

read more

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).

PAM-199-P-ETC

ESI-File


PAM-199-P-PDP / PAM-199-P-PFN

PAM-199-P-PDP

Universal power amplifier with Profibus DP or ProfiNet interface

Typical applications:

  • control of directional, throttle and pressure valves, which need a flexible adaptation of the solenoid control

All typical proportional valves of the different manufacturers (BOSCH, REXROTH, PARKER, EATON …) can be controlled.

read more

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 and 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.

PAM-199-P-PDP     GSD File

PAM-199-P-PFN     GSDML File   


PAM-193PAM-193

Power amplifier for proportional valves

Typical applications:

  • control of proportional valves in different applications
  • adjustable by potentiometers
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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.

PAM-193-P/L


PAM-140-PPAM-190

PAM-140-P / PAM-190-P

Universal mobile power amplifier

Typical applications:

  • controlling of the solenoid of proportional throttle or pressure valves as well as general inductive loads
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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.

PAM-140-P

PAM-190-P


SV-200SV-200

Power amplifier for servo valves

Typical applications:

  • dynamic control of servo valves
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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.

SV-200


Special Versions:


MOT-114-PMOT-114-P

Power amplifier with motor potentiometer function

Typical applications:

  • adjustable pressure via UP/DOWN buttons
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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.

MOT-114-P


PAM-195-P-S3PAM-195-P-S3

Power amplifier for directional valves with integrated power limitation function

Typical applications:

  • control of directional and throttle valves

All typical proportional valves of the different manufacturers (BOSCH, REXROTH, PARKER, EATON …) can be used.

read more

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.

PAM-195-P-S3


PAM-195-P-PVGPAM-195-P-PVG

Power amplifier for directional valves with ratio metric input control

Typical applications:

  • control of directional valves with ratio metric joystick input (Danfoss compatible control)
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This module is used for the control of a directional valve with two solenoids. 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.

Command value setting is realized via a ratio metric input. Means the command signal is given as a percentage of the supply voltage. For this purpose, the current supply voltage is measured via a separate input. Via the command signal input, a value is set with 25 % (for 100 % opening of the B side) up to 75 % (for 100 % opening of the A side) of the supply voltage. 50 % representing the zero position of the valve.

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.

PAM-195-P-PVG