W.E.S.T. Elektronik PAM-195-P-S3, Техническая документация инструкция

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Page 7 of 35 PAM-195-P-S3 05.06.2020
2 Characteristics
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 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.
Additionally to the amplifier function a power limitation functionality via an analogue input was implemented.
Switching the direction was realized by a digital switching input. It is also possible to do it with an adapted
scaling of the command input. Within that a simple unipolar output of a plc can control this amplifier. Control-
ling it with a bipolar signal from -10 to 10V is possible, too.
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. For example: using pressure valves a
linear behavior between input signal and pressure can be reached.
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 manufactures (BOSCH, REXROTH, PARKER,
EATON ...) can be controlled.
Features

Control of directional, pressure or throttle valves

Compact housing

Digital reproducible adjustments

Free scaling of the analogue inputs

Power limitation functionality via analogue input

Unipolar controlling with direction switch

Bipolar controlling via differential input

Characteristics linearization via 10 XY-points per direction

Free parameterization of RAMPS, MIN und MAX, output current, DITHER (frequency, amplitude)

Nominal output current range
: 0,5… 2,6 A

Simple and application orientated parameter settings via WPC-software

Failure monitoring and extended function check