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S E R I E S

9 7

An Over-temperature

Limit Controller

With User Defined

Messages

Watlow’s SERIES 97 is a microprocessor-basedcontroller with a single input, second auxiliary input and four outputs. Input one is used to measure temperature from a sensor. Input two can be utilized as a remote reset switch or a hardware lockout switch. With up to four outputs, the controller is versatile in handling applications that require a high/low limit, alarms, retransmit and communications. The control is so user friendly that it can be set up to display safety and limit messages created by the end user to meet the exact application need.

The SERIES 97 limit controller is added to thermal applications to limit over-temperatureconditions. The SERIES 97 limit controller provides safety assurance against instances where a high temperature runaway condition could occur from a shorted input sensor or an output device that could fail in a closed position.

The SERIES 97 is recommended for any application where thermal runaway could result in large product scrap costs, affect operator safety, cause damage to equipment or create a fire hazard.

The SERIES 97 is manufactured by ISO 9001 registered Watlow Winona and reliably backed up by a three-yearwarranty.

Features and Benefits

Programmable messages

Controller can be set up to display user programmed limit message

NEMA 4X (IP65)

Water and corrosion resistant; front panel can be washed down

Microprocessor-based

Accurate set point settings and quick output response

Second auxiliary input

Remote reset capability

Four outputs

Handles high/low limit, alarms, communication and retransmit requirements

Software and hardware lockouts

High security

1241 Bundy Boulevard

 

WIN-97-1203

 

 

Winona, Minnesota 55987-5580

USA

ISO 9001

Phone: +1 (507) 454-5300

 

 

 

Fax: +1 (507) 452-4507

 

 

Internet: www.watlow.com

 

Registered Company

e-mail:info@watlow.com

 

 

Winona, Minnesota USA

© 2003 Watlow Electric Manufacturing Company

Printed in the USA on Recycled Paper, 15 Percent Postconsumer Waste

Specifications

Controller

Microprocessor-based

Universal input 1, auxiliary input 2, 4 outputs

Input sample period; Single input 10Hz (100 msec), dual input 5Hz (200 msec) digital filter adjustable

Display update; 2Hz (500 msec), time filter adjustable

Input/Output/Communication isolation

Displayed in °C, °F

Operator Interface

Dual 4-digitLED displays: upper 10.2 mm (0.4 in.), lower 6.2 mm (0.244 in.)

Advance, Up Arrow, Down Arrow, Reset tactile keys

Standard Conditions For Specifications

Ambient temperature 77°F (25°C) ±3°C, rated line voltage, 50 to 60Hz, 0 to 90 percent RH non-condensing,

15 minute warm-up

Universal Input 1

Thermocouple

Type J, K, T, N, C (W5), E, PTII, D (W3), B, R, S thermocouple types

>20MΩ input impedance

Maximum 20Ω source resistance

30mA open detection bias

RTD

2- or 3-wireplatinum, 100Ω

JIS and DIN curves

Whole or tenth degree indication

150µA nominal RTD excitation current

Input 2

Event Input

Contact or voltage

20KΩ input impedance

Voltage input: event high state 3 to 36VÎ(dc), event low state 0 to 2VÎ(dc)

Resistance/contact input: event high state > 23kΩ , event low state 0 to 2kΩ

Output Types

Open Collector/Switched DC

Open collector configuration: Maximum voltage 42VÎ(dc)

Maximum current 200mA Maximum “on” resistance 1.Ω1

Maximum offstate leakage current 100µA

Switched dc configuration:

Switched dc supply voltage 22 to 28VÎ(dc) dc supply current limited to 30mA

Solid State Relay

Optically isolated

Zero cross switched

Without contact suppression

Minimum load current 0.5mA rms

Solid State Relay (cont.)

Maximum current 0.5A rms at 20 to 280VÅ(ac)

Maximum offstate leakage current 10µA rms

For resistive loads only, must use RC suppression for inductive loads

Electromechanical Relay

Form C contact configuration

Minimum load current 10mA @ 5VÎ(dc)

Rated resistive and inductive loads: 2A @ 250VÅ(ac) or 30VÎ(dc) maximum

Electrical life 100,000 cycles at rated current

For resistive loads only, must use RC suppression for inductive loads

Retransmit

Range selectable: 0-20mA,4-20mA,0-5VÎ(dc),1-5VÎ(dc),0-10VÎ(dc)

0 to 10VÎ(dc) voltage output into a 1,000Ω minimum load resistance

0 to 20mA current output into an 800Ω maximum load resistance

Resolution:

Vdc ranges = 2.5mV nominal mA ranges = 5µA nominal

Calibration accuracy: Vdc ranges = ±15mV mA ranges = ±30µA

Temperature stability 100ppm/°C

Communications

EIA/TIA-485,EIA/TIA-232

Opto-isolated

ModbusTM RTU protocol

1200, 2400, 4800, 9600, 19200 baud rates

32 maximum units can be connected (With additional

485 repeater hardware, up to 247 units may be connected)

Accuracy

 

 

 

 

 

• Input ranges

 

 

 

 

 

Type J:

0 to

750°C

or

32 to

1382°F

Type K:

-200to 1250°C

or

-328to

2282°F

Type T:

-200to

350°C

or

-328to

662°F

Type N:

0 to 1250°C

or

32 to 2282°F

Type E:

-200to

900°C

or

-328to

1470°F

Type C(W5):

0 to 2315°C

or

32 to 4200°F

Type D(W3):

0 to 2315°C

or

32 to 4200°F

Type PTII:

0 to 1393°C

or

32 to

2540°F

Type R:

0 to 1450°C

or

32 to 2642°F

Type S:

0 to 1450°C

or

32 to 2642°F

Type B:

870 to 1700°C

or

1598 to 3092°F

DIN:

-200to

800°C

or

-328to

1472°F

JIS:

-200to

630°C

or

-328to

1166°F

ModbusTM is a trademark of AEG Schneider Automation.

Thermocouple Inputs

Calibration accuracy ±0.1 percent of span ±1˚C at standard conditions

Exceptions:

Type T; 0.12 percent of span for -200°Cto-50°C(-328°Fto-58°F)

Types R and S; 0.15 percent of span for 0°C to 100°C (32°F to 212°F)

Types B; 0.24 percent of span for 870°C to 1700°C (1598°F to 3092°F)

Accuracy span: 540°C (1000°F) minimum

Temperature stability: ±0.1 degree per degree change in ambient

RTD Inputs

Calibration accuracy ±0.1 percent of span ±1˚C at standard conditions

Accuracy span: 540°C (1000°F) minimum

Temperature stability: ±0.05 degree per degree change in ambient

Agency Approvals

FM Class 3545, File # J.I. 1B5A6.AF

NEMA 4X, IP65

CE 89/336/EEC, electromagnetic compatibility directive CE 73/23/EEC, low-voltagedirective

Terminals

Touch safe

22 to 12 AWG

Power

100-240VÅ(ac)+10 percent,-15percent; 50/60Hz, ±5 percent

24-28VÅ(ac)or VÎ(dc) +10 percent,-15percent; 50/60Hz, ±5 percent

7.0VA maximum power consumption

Data retention upon power failure via nonvolatile memory

Operating Environment

0 to 65°C (32 to 149°F)

0 to 90 percent RH, non-condensing

Storage temperature: -40to 85°C(-40to 185°F)

Dimensions

Width 52 mm (2.05 in.)

Height 52 mm (2.05 in.)

Length 107 mm (4.2 in.)

Depth behind panel surface 98.4 mm (3.875 in.)

Approximate controller weight 0.2 kg (0.4 lbs)

Allowable Operating Ranges

 

 

 

 

 

 

Type J:

1.0

 

0

to

815°C

or

32

to

1500°F

 

 

0.1

 

0.0

to

815.0°C

or

32.0

to

999.9°F

Type K:

1.0

 

-270

to

1370°C

or

-454

to

2500°F

 

 

0.1

-199.9

to

999.9°C

or -199.9

to

999.9°F

Type T:

1.0

 

-270

to

400°C

or

-454

to

750°F

 

 

0.1

-199.9

to

400.0°C

or -199.9

to

750.0°F

Type N:

1.0

 

0

to

1300°C

or

32

to

2372°F

 

 

0.1

 

0.0

to

999.9°C

or

32.0

to

999.9°F

Type E:

1.0

 

-270

to

800°C

or

-454

to

1470°F

 

 

0.1

-110.0

to

800.0°C

or -199.9

to

999.9°F

Type C:

1.0

 

0

to

2315°C

or

32

to

4200°F

 

 

0.1

 

0.0

to

999.9°C

or

32.0

to

999.9°F

Type D:

1.0

 

0

to

2315°C

or

32

to

4200°F

 

 

0.1

 

0.0

to

999.9°C

or

32.0

to

999.9°F

Type PTII:

1.0

 

0

to

1395°C

or

32

to

2543°F

 

 

0.1

 

0.0

to

999.9°C

or

32.0

to

999.9°F

Type R:

1.0

 

0

to

1760°C

or

32

to

3200°F

Type S:

1.0

 

0

to

1760°C

or

32

to

3200°F

Type B:

1.0

 

0

to

1816°C

or

32

to

3300°F

DIN

1.0

 

-200

to

800°C

or

-328

to

1472°F

 

 

0.1

-199.9

to

800.0°C

or -199.9

to

999.9°F

JIS

1.0

 

-200

to

630°C

or

-328

to

1166°F

 

 

0.1

-199.9

to

630.0°C

or -199.9

to

999.9°F

Functionality Matrix

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High/

High/

 

 

232

 

 

Universal

 

 

Low

Low

 

 

485

 

 

 

Input

 

Event

Limit

Alarm

Retransmit

Comm

 

Input 1

 

 

 

 

 

 

 

 

 

 

 

 

 

Input 2

 

 

 

 

 

 

 

 

 

 

 

 

 

Output 1

 

 

 

 

 

 

 

 

 

 

 

 

 

Output 2

 

 

 

 

 

 

 

 

 

 

 

 

 

Output 3

 

 

 

 

 

 

 

 

 

 

 

 

 

Output 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: These specifications are subject to change without prior notice.

Ordering Information

SERIES 97

9 7

-

-

Microprocessor-based

116 DIN with universal input 1, thermocouple and RTD. Options include: software, power supply, input 2, four outputs and display color

Power Supply

A= 100-240Vı(ac/dc)

B= 24-28Vı(ac/dc)

Auxiliary Input 2

0= None

1= Event input

Limit Output 1

D= Electromechanical relay, Form C, 2A, without RC suppression

Alarm Output 2

A = None

C= Switched dc output/open collector

D= Electromechanical relay, Form C, 2A, without RC suppression

K= 0.5A solid state relay without RC suppression

Alarm Output 3

A = None

D= Electromechanical relay, Form C, 2A, without RC suppression

Auxiliary Output 4

A = None

D= Electromechanical relay, Form C, 2A, without RC suppression

R = 232 Communications

U = 485 Communications

M= Universal Retransmit, range selectable: 0-20mA,4-20mA,0-5VÎ(dc),1-5VÎ(dc),

0-10VÎ(dc)

Software/Preset Parameters

00 = Standard software

Display/Overlay

 

Upper/Lower

RR =

Red/Red display

RG =

Red/Green display

GR =

Green/Red display

GG =

Green/Green display

Panel Cutout

44.958 mm x 44.958 mm

(1.77 in. X 1.77 in.)

52.070 mm

(2.050 in.)

96

1 2 3 4

%

52.070 mm

(2.050 in.)

RESET

107.747 mm

(4.242 in.)

98.425 mm

(3.875 in.)

59.182 mm

(2.330 in.)

Customer's Front Panel

9.322 mm

(0.367 in.)

To be automatically connected to the nearest North American Technical and Sales Office call:

1-800-WATLOW2

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