Watlow 147 User Manual

Series 147

User’s Manual

Temperature Limit

Watlow Controls

1241 Bundy Boulevard, P.O. Box 5580, Winona, Minnesota USA 55987-5580

Phone: [phone], Fax: [phone], Internet: http://www.watlow.com

Watlow’s Series 147 is an open-board temperature limit

with a thermocouple or RTD sensor input.

The Series 147 is designed to meet the needs of a wide
range of temperature limit applications. Installation and
setup are simple and easy, using basic hand tools. Factory
selectable options include high or low limit with either
manual or automatic reset on power loss.

The Series 147 has an LED output status indication
and can be ordered with an integral or a fixed set point.

(1885)

Control Mode

• High or low limit, factory selectable

• Manual or automatic reset on power loss, factory selectable

• Latching alarm with manual reset on overtemperature

• Customer-supplied reset switch

Operator Interface

• LED indication of output status

• Dial scale calibrated to compensate for sensor

non-linearities

• Integral set point

• Dual temperature scale (°F and °C)

• Fixed set point

• Manufactured to specified value

Input

• Thermocouple or platinum RTD available

• Thermocouple with automatic cold junction compensation

• Thermocouple may be isolated or grounded

• Thermocouple and RTD break protection de-energizes output

• 2- or 3-wire RTD input, 100Ω, 500Ω, or 1000Ω @ 0°C calibrated for

0.003850Ω/Ω °C curve, factory selectable

Output

• Electromechanical relay, 8A, Form C, SPDT: 8A @ 240VÅ resistive,
8A @ 28VÎ (dc) resistive, 275VApilot duty rated

Accuracy

Adjustable Set Point

• Calibration accuracy: ±1% of span, at 77°F ±5°F (25°C ± 3°C)
ambient and rated line voltage ± 1%

• Set point accuracy: ±3% of dial scale

• Accuracy span: 1000°F (540°C) minimum

Fixed Set Point

• Calibration accuracy: ±10°F/±6°C of setting, at 77°F ±5°F (25°C
±3°C) ambient and rated line voltage ±1%

Agency Approvals

• CE: EN61010 - Safety

EN61326 - Industrial Immunity, Class B Emissions
Installation Category 2, Pollution Degree 2

• 873 Recognized, File #E43684

• Recognized to C22.2 No. 24, File #E43684

• Approved for use in commercial cooking applications

• FM Class 3545

Terminals

• Sensor input and remote setpot

• Screw clamp terminal: 12-26 gauge wire

• Power input and control output

• #6 screws on barrier strip

Power

• 120V~, +10%/-15%, 50/60 Hz

• 230V~ to 240~, +10%/-15%, 50/60 Hz

• 10VAmaximum power

Operating Environment

• 32 to 131°F (0 to 55°C)

• 0 to 90% RH, non-condensing

• Storage temperature: -4 to 185°F (-20 to 85°C)

Dimensions

• Width: 4.5 in (114 mm)

• Length: 4.0 in (102 mm)

• Depth: 1.5 in (38 mm)

Weight

• 0.7 lb (0.3kg)

UL®is a registered trademark of Underwriter’s Laboratories, Inc.
Note: Specifications subject to change without notice.

Specifications

General Description

$5.00 Made in the U.S.A.

Printed on Recycled Paper

10% Postconsumer Waste

0600-0004-0011 Rev E
August 2000

Supersedes: 0600-0004-0011 Rev D

TOT AL

3 Y ear Warranty

2 ■ Watlow Series 147 User’s Manual

(1886) 147 _ - _ _ _ _ - _ 0 0 0

Output Type

E = Electromechanical relay, 8A,

Form C

Line Voltage

1 = 120V~
2 = 230V~ to 240V~

Input and Range
Type J

601 = 32 to 600°F (0 to 315°C)
602 = 32 to 1382°F (0 to 750°C)
609 = 50 to 150°F (10 to 66°C)
614 = Fixed at 750°F (399°C)
615 = Fixed at 600°F (315°C)

Type K

603 = 32 to 2282°F (0 to 1250°C)
611 = 32 to 1112°F (0 to 600°C)
612 = 32 to 482°F (0 to 250°C)
613 = 0 to 2500°F (-17 to 1371°C)

Type T

604 = 150 to 662°F (66 to 350°C)
605 = -328 to 150°F (-200 to 66°C)
610 = -125 to 425°F (-87 to 218°C)

Type R

608 = 32 to 2732°F (0 to 1500°C)

Type S

607 = 32 to 2732°F (0 to 1500°C)

RTD (100Ω)

101 = -100 to 1112°F ( -73 to 600°C)
103 = 32 to 482°F (0 to 250°C)

Limit Mode

1 = High limit with manual reset on power loss
2 = Low limit with manual reset on power loss
3 = High limit with automatic reset on power loss
4 = Low limit with automatic reset on power loss

NOTE: Electromechanical relays are warranted for 100,000
closures only. Solid state switching devices recommended for applications
requiring extended service life.

NOTE: Conformal coated product is available; consult factory.

NOTE: This output should be used with inductive loads.

NOTE: User documentation may be available in French, German, Spanish,
Italian, and Dutch, as well as English. Check Watlow’s website (www.wat­low.com/) for availability. Specify language at time of order.

The Series 147 is warranted to be free of defects in
material and workmanship for 36 months after delivery to
the first purchaser for use, providing that the unit has not
been misapplied. Since Watlow has no control over its use
or misuse, we cannot guarantee against failure. Watlow’s
obligations hereunder, at Watlow’s option, are limited to
replacement or refund of purchase price of a unit which
upon examination proves to be defective within the
warranty period. This warranty does not apply to damage
resulting from transportation, alteration, misuse or abuse.

• Call or fax Customer Service for a Return Material

Authorization (RMA) number before returning a product.

• Put the RMA number on the shipping label, and also a

description of the problem.

• A 20% of net price restocking charge applies to all

standard units returned to stock.

Contact

• Phone: [phone]

• Fax: [phone]

If you encounter a problem with your Watlow
controller, verify that your wiring is correct for your specific
model number. If the problem persists, an Application
Engineer can discuss your application with you.

Before calling, please have the complete model number
and user’s manual available. You can get technical support
by dialing [phone], 7 a.m. to 7 p.m. Central
Standard Time.

The Series 147 User’s Manual is copyrighted by
Watlow Winona, Inc., © August 2000, with all rights
reserved. (1884)

Technical Support

Returns

WarrantyOrdering Information

Connect according to input wiring directions, page 3.

Remove power to the controller and the controller from

the system. Apply power to the system with the
controller removed. If the load turns off, return the
controller to the factory. If the load remains on, there
are other problems in the system that must be
resolved. Consult the factory.

The polarity is reversed on the

thermocouple.

A faulty unit.

The load will not turn off.

Repair or replace.

Check the fuses, circuit breakers, load and wiring.

Check the ac input connections. If not present,

connect per Power Wiring, page 2.

An open sensor

The load circuit is open.

The ac input is not connected or

is connected improperly.

The load will not turn on.

ActionProbable CauseProblem

Troubleshooting