Failure of devices, such as the thermocouple-RTD sensor, heater output relay or temperature control can result in
severe damage to a product while in process, melting of the heater or a damaging fire. An over-temperature
protection device must be installed in your process that will remove all power from the heating circuit if the above
failure occurs. We recommend that this device be classified as a safety control and carry FM, U.L. and CSA Listing
or Certification. Failure to install high-limit temperature control protection where a potential hazard exists, could
result in damage to equipment and property, and severe injury to personnel.
WARNING!
INSTRUCTION MANUAL
FOR ETR-9090
Section 1: INTRODUCTION
This manual contains information for the installation and
operation of the Ogden Model ETR-9090 auto-tuning
micro-processor based controller with Smarter Logic
®
.
Ease of use is an essential feature on this versatile
controller. Four touch keys are used to select sensor
type, control mode, control parameters, alarm mode,
degrees C/F, auto-manual mode, and to lock the
parameters from the prevention of unauthorized
tampering. Two large 4-digit displays show process
and set point values at a glance. Precise 14 slope
sensor linearization, self-diagnostic capability, cold
junction compensation and 3-mode PID calculations are
automatically executed by the single chip microproces-
sor. The wide selection of parameters, values, sensor
types, set points, control modes, alarm modes, degrees
C/F and security codes are held in a non-volatile
memory and retained for ten years if the unit is left
unpowered. Batteries are not necessary.
The auto-tuning function determines the correct
proportional band, rate and reset values to provide
accurate control with minimal overshoot and tempera-
ture oscillation. This is accomplished without the need
for expensive and time consuming procedures for
set-up of control parameters. In case of a power failure
or temporary shutdown, the instrument retains the
correct parameters. This instrument also has manual
override capabilities that allow the operator to bypass
the auto-tuning parameters. Required fine tuning
adjustments can then be made.
SM
ARTER
SM
ARTER
LOGIC
LOGIC
LOGIC
®
64 West Seegers Road
Arlington Heights, IL 60005
(847) 593-8050 • Fax: (847) 593-8062
Printed in U.S.A. 7/99
© Ogden Manufacturing Co. 1999
OGDEN, ETR, ETR-9090 and
SMARTER LOGIC are
Registered Trademarks of
Ogden Manufacturing Co.
MARCA REGISTRADA
Specifications subject to change without notice.
