AUMA Matic Positioner
Calibration Instruction
AUMA Actuators, Inc. USA
AUMA MATIC Compacts consist of motor controls, local controls and other control elements, which may be
required to operate an electric actuator
Scope
These instructions are intended to cover the AUMA MATIC compact in both the C and S configuration with an
AUMA positioner board. These instructions are for general startup and basic trouble shooting.
For calibration/setting of Standard Interface Board or Pulse Timer, refer to the appropriate instructions.
The positioner is usually supplied internally mounted in the AUMA MATIC Compact (Figure 1). These instructions
also apply if the positioner is remotely mounted. The positioner is programmable for several command and
internal feedback signals. Additionally, the choice of fail modes on loss of these signals can be chosen. Refer to
the programming section (Figure 4) for more information.
The Standard version of the positioner is supplied as a clockwise-actuator output on decreasing-command signal.
Consult the AUMA factory for information on other available configurations.
The convention of clockwise actuator output to close is used throughout this instruction.
General Description
The positioner is an electric controller, employing solid state circuitry, intended for regulating electric motor driven
actuators used on valves, dampers and other devices requiring accurate positioning control. Accurate positioning
is attained through the use of a precision position feedback potentiometer or current device (RWG current
transmitter). The controller drives the motor reversing starters which can be electromechanical (AUMA MATIC-C)
or solid state (AUMA MATIC-S). The controller utilizes a comparator circuit which senses the error between the
input command signal and the internal position feedback signal. The controller then energizes the motor
reversing starter control circuit to drive the actuator in the direction necessary to reduce the error signal to within
the customer set deadband.
Two modes of control are available. In the first mode the motor is continuously energized until the error between
the feedback signal and setpoint is zero. In the second mode (pulse mode) the motor is pulsed based on the
setting of a potentiometer, Time-on (P8), until the error is 25 percent or less. Then the Time-on is reduced by a
factor of 3 through the final 25 percent of error. The initial setting of “OFF” time remains constant. In the pulse
mode the initial “ON” and “OFF” times are field adjustable via the potentiometers P8 and P10.
Note:
The AUMA MATIC with positioner generally incorporates a means of remote manual operation using
contact closure. This circuit, using the remote command board, is designed as a secondary input for
push buttons or relay contacts. It is
not
intended for “modulating” operation when an analog signal is not
available. An interface board is available for use in this case.
All information in this document is subject to change without notice.
ISSUE 02/02
Page 1 of 11
SE-SI-35-0007
