Watlow Series 142 Bedienungsanleitung PDF herunterladen

Series 142

User’s Manual

Safety High Limit or

On-Off Heat Controller

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

Phone: +1 (507) 454-5300, Fax: +1 (507) 452-4507,

Internet: http://www.watlow.com

The Watlow Series 142 Safety Limit is a compact,

environmentally protected safety limit or temperature

controller. The limit has a single thermocouple input and

is available in several common ranges.

The Series 142 Safety Limit has a single mechanical

relay output, and operates as a high limit, latching control

with manual and/or auto-power reset. Fixed set points are

available.

The Series 142 Safety Limit controller is ideally

suited for limit applications requiring tamper-proof opera-

tion, agency approvals and immunity to hostile environ-

ments.

• The factory-fixed set point cannot be altered by operator

action or neglect.

• Agency approvals ensure compliance with recognized

standards.

• Epoxy potting makes the Series 142 resistant to envi-

ronments with vibration or humid/corrosive conditions.

Compact size and sub-panel mounting make the

Series 142 readily adaptable to many applications. Its

single, factory-fixed set point thermocouple input and

Form C, 3 amp electromechanical relay output provides

simplicity and reliability for many applications. Sensor

break protection ensures fail-safe process shut down upon

input failure.

We use note, caution and warning symbols through-

out this manual to draw your attention to important oper-

ational and safety information.

A “NOTE” marks a short message to alert you to an

important detail.

A “CAUTION” safety alert appears with information

that is important for protecting your equipment and per-

formance. Be especially careful to read and follow all

cautions that apply to your application.

A “WARNING” safety alert appears with information

that is important for protecting you, others and equipment

from damage. Pay very close attention to all warnings that

apply to your application.

The safety alert symbol, ç, (an exclamation point in

a triangle) precedes a general CAUTION or WARNING

statement.

The electrical hazard symbol, Ó, (a lightning bolt in a

triangle) precedes an electric shock hazard CAUTION or

WARNING safety statement.

Safety Information

General Description

TOTAL

3 Year Warranty

CUSTOMER

SATISFACTION

0600-0023-0000 Rev E

March 2002

Supersedes

0600-0023-0000 Rev D

$5.00

Made in the U.S.A.

1 2 3 4 5 6 7 8

Inhaltsverzeichnis

Seite 1 - Series 142

Series 142User’s ManualSafety High Limit orOn-Off Heat Controller1241 Bundy Boulevard, P.O. Box 5580, Winona, Minnesota USA 55987-5580Phone: +1 (507)

Seite 2 - Installation

2 User’s Manual Watlow Series 142Figure 2a — Series 142 dimensions.Installation Procedure1. Drill two 5mm (0.187 in.) diameter holes in the desiredp

Seite 3 - External

Watlow Series 142 User’s Manual 3NOTE: All terminals are 4mm (1/4 in.) quick connects.Figure 3a — 120V~ power wiring (142A - _ _ _ _ - 1 _ 00).Figur

Seite 4 - System Wiring Example

4 User’s Manual Watlow Series 142Figure 4 — System wiring example.∫WARNING:Install high or low temperature limit control protection in sys-tems wher

Seite 5 - Specifications

Watlow Series 142 User’s Manual 5(2072)Limit Control Mode• High limit control• Latched manual reset with ±1.7°C (3°F) hysteresis• Can only be reset

Seite 6 - Ordering Information

6 User’s Manual Watlow Series 142(2071)To order, complete the code number to the right with the information below:1 4 2 A - _ _ _ _ - _ _ 0 0Series

Seite 7 - Declaration of Conformity

Jim Boigenzahn Winona, Minnesota, USAName of Authorized Representative Place of IssueGeneral ManagerDecember 2001Title of Authorized Representative Da

Seite 8 - Warranty

8 User’s Manual Watlow Series 142automatic power reset — A feature in latching limitcontrollers that does not recognize power outage as a limitcondi

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Watlow Series 142 Bedienungsanleitung

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Inhaltsverzeichnis

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