Watlow SD Data sheet

SERIES SD
Controllers Provide
Value and Accurate,
Cost-Effective
Temperature Control

The SERIES SD family of PID temperature controllers utilizes
today’s advanced technology to provide the value, benefits
and accuracy you’ve come to expect from Watlow. The
features and performance offered by SERIES SD controllers
make them ideally suited for a broad range of applications in
temperature and process control.

The SERIES SD single channel controllers include a
universal sensor input with up to three outputs that can be
programmed for heat or cool temperature control, or to
operate as process or deviation alarms. Programming Inverse
Scaling is also simplified with the user-friendly set-up menu,
providing additional value without additional cost.

Advanced features of SERIES SD controllers include EIA-485
Modbus™ Serial Communications, Watlow’s INFOSENSE™
sensor technology, Infrared Remote Communications
operation, Watlow’s patented User Definable Menu System
and a "Save and Restore" feature that allows the restoration
of either factory or user-defined settings.

The SERIES SD is available in FM Limit version and a four­profile, 10-step Ramping version that includes Ramp, Soak,
Jump Loop, Link and End steps. The updated SERIES SD
family includes a new Variable Burst Fire feature that saves
wear and tear on heaters, thus prolonging heater life,
reducing downtime and saving money. Two non-linear PID
curves have also been added to improve performance in
plastics extruder applications.

Available in

1

⁄32, 1⁄16, 1⁄8 and 1⁄4 DIN panel mount sizes,
Watlow’s SERIES SD family is backed by an industry leading
three-year warranty from Watlow Winona. The SERIES SD
controllers are UL

®

and C-UL®listed, CSA, CE and NSF-2

certified and include the IP65/NEMA 4X seal.

SERIES SD

1241 Bundy Boulevard
Winona, Minnesota 55987-5580 USA
Phone: [phone]
Fax: [phone]
Internet: www.watlow.com
e-mail: [e-mail]

WIN-SD-0506

Features and Benefits

TRU-TUNE+™ Adaptive Control Algorithm

• Tighter control for demanding temperature/process

applications

Watlow’s INFOSENSE™ sensor technology

• Thermal sensing technology improves sensor accuracy

by a minimum of 50 percent

Watlow’s patented User Defined Menu System

• Allows the user to assign up to 20 parameters in the

operations menu

• Improves operational efficiency

“Save and Restore” feature for user settings

• Allows the user to save individual or factory settings

• Eliminates the need to contact the OEM or factory to

restore settings

WATVIEW HMI (Human Machine Interface)

• Permits operation, configuration and data logging via a

standard Windows

®

PC

Infrared Communications

• Allows easier controller setup, operation and monitoring

Up to three outputs (two for

1

⁄32 DIN)

• Results in application versatility

Dual Displays for all models

• Provides better recognition of process changes

Ramp to set point

• Controls temperature rise

Variable Burst Fire

• Prolongs heater life

© 2006 Watlow Electric Manufacturing Company Printed in the USA on Recycled Paper, 15% Postconsumer Waste

UL®and C-UL®are registered trademarks of Underwriter’s
Laboratories, Inc.
Windows

®

is a registered trademark of the Microsoft Corporation.

Modbus™ is a trademark of Schneider Automation, Inc.

INFOSENSE™ Sensor Technology

Watlow’s INFOSENSE™ sensor technology improves
temperature sensing accuracy by 50 percent.

Each INFOSENSE "smart" sensor contains four numeric
values located on tags attached to each sensor that are
programmed into the SD controller memory. These values
characterize Watlow sensors and allow the controller to
provide enhanced accuracy.

Oven

Limit
Sensor

Temperature
Sensor

Output 1Input 1

Output 2

Heaters

Alarm

Form C Relay

SDSDSDSD

23 %SD231%1 23 %

SD

RESET

231

LIMIT SD

SERIES SD PID SERIES SD Limit

Typical Block Diagram

SERIES SD Limit Controllers

The SERIES SD family of limit controllers has been designed
with the same microprocessor-based technology as the
SERIES SD PID family of temperature controllers. The limits
come with the FM (Factory Mutual) agency approval — the
industry’s most recognized designation for insurance
concerns.

Limit controllers are typically added to thermal applications to
monitor an over-temperature condition as a safety precaution.
Limit controllers provide a redundant safety assurance to
guard against instances where a high temperature runaway
condition could result from a shorted input sensor, or from an
output device that fails in a closed position.

Limits are recommended and are often required in
applications where thermal runaway could result in costly
operator safety concerns, product scrap, damage to capital
equipment or a fire hazard.

WATVIEW HMI

WATVIEW, Watlow’s Windows®based HMI (Human Machine
Interface) software, supports the SERIES SD controllers. The
software can be used to setup, monitor and edit the values of
controller parameters, to monitor and manage alarms and to
log and graph process data.

Refer to the user manual for proper wiring instructions