Watlow 981, 982 Data sheet

S E R I E S 9 8 1 / 9 8 2

Easy Operation
and Numerous
Uses Are
Constants For This
1/8 DIN Ramping
Controller

The Watlow SERIES 982 vertical 1⁄8 DIN-ramping controller and
its companion, the horizontal SERIES 981, offer four-file /
24-step program capability, or easy-to-use non-ramping set
point operation. The controller is designed with most typical
programming needs in mind. The SERIES 981/982 is among
the most easy-to-use ramping controllers.

Ramping operations include four files with six steps in each file.
Programming options include ramp-rate or time-based profiles,
guaranteed soak deviation, program looping and program
status selection after power outage. The files may be linked to
create a single 24-step program.

The primary analog input accepts 11 different thermocouple
types, RTD or scalable process inputs. A second analog input
can be factory configured for a slidewire feedback input
common in gas valve control. With up to two event inputs, the
SERIES 981/982 offers remote program start or hold capability
and allows the operator to program a wait-for event.

The SERIES 981/982 is packaged with a NEMA 4X front panel
to withstand harsh environments, four inch case depth and
touch-safe wiring terminal.

The SERIES 981/982 features a three-year warranty and four
day shipment, on all model, in limited quantities.

Features and Benefits

Four files / 24 steps

• Designed to meet the needs of most ramping applications

Auto-tuning

• One-step tuning of system parameters for easy operation

Optional dual auxiliary outputs

• Flexible time-based events or alarm outputs

Optional retransmit of set point or process variable

• For master programmer or chart recorder connection

Hardware and software parameter lockout options

• Provides several levels of operator security

NEMA 4X front panel

• Provides watertight corrosion resistance

10Hz sampling rate and burst-fire control

• Smooth, accurate control of the process

Slidewire feedback

• Interfaces with most slidewire input positioning devices

Your Authorized Watlow Distributor is:

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

North American Sales Offices: Atlanta, [phone] • Austin, [phone] • Birmingham, [phone] • Charlotte, [phone] •

Chicago, [phone] • Cincinnati, [phone] • Cleveland, [phone] • Dallas, [phone] • Denver, [phone] •
Detroit, [phone] • Eastern Canada, [phone] • Houston, [phone] • Indianapolis, [phone] • Kansas City, [phone] •
Los Angeles, [phone] • Louisiana, [phone] • Maryland/Virginia, [phone] • Minneapolis/Manitoba, [phone] •
Nashville, [phone] • New England, [phone] • New York/New Jersey/Philadelphia, [phone] • New York, Upstate, [phone] •
Ontario, [phone] • Orlando, [phone] • Phoenix, [phone] • Pittsburgh, [phone] • Portland, [phone] •
Raleigh/Greensboro, [phone] • St. Louis, [phone] • Sacramento, [phone] • San Diego, [phone] •
San Francisco, [phone] • Seattle, [phone] • Tampa/St. Petersburg, [phone] • Tulsa, [phone] •
Western Canada, [phone] • Wisconsin, North [phone] • Wisconsin, South [phone]

Asian Sales Offices: Australia, [phone] • China, [phone] • Japan, [phone] • Korea, [phone] •

Malaysia, [phone] • Singapore, [phone] • Taiwan, [phone] European Sales Offices: France, [phone] •
Germany, [phone] • Italy, [phone] • Sweden, [phone] • United Kingdom, [phone]

Latin American Sales Office: Mexico, [phone]

© 2003 Watlow Electric Manufacturing Company Printed in the USA on Recycled Paper, 15% Postconsumer Waste

WIN-981-0903

Specifications

Control Mode

• Single input, quad output, optional retransmit of set point or process
variable.

• Programmable direct- and reverse-acting control outputs.

• 4-file, 6 steps per file, time/temperature profile or fixed-set-point control.

• Ramp-rate or time-based programming.

• Selectable control status following power loss.

Agency Approvals

• CE: 89/336/EEC Electromagnetic Compatibility Directive.
EN 50081-2: 1994 Emissions.
EN 50082-2: 1994 Immunity.

• 73/23/EEC Low Voltage Directive.
EN 61010-1: 1993 Safety.

• UL®#873, C-UL®File #E43684

• NEMA 4X

Operator Interface

• Dual, four digit LED displays. Upper: 0.4 in. (10 mm).
Lower: 0.3 in. (8 mm).

• Mode, Hold/Run, Display, Up and Down keys.

Sensors/Inputs

• Contact input for software function select (event input).

• Thermocouple Types B, C2, D2, E, J, K, N, R, S, T and Pt 22.

• RTD resolution in 1° or 0.1° RTD scales.

• Process variables: 0-20mA, 4-20mA, 0-5VÎ (dc), 1-5VÎ (dc),
and 0-10VÎ (dc).

• Slidewire or digital event input options.

• Sensor break protection de-energizes system for safety. Latching or
non-latching.

Input Range

Specified temperature ranges represent the controller's operational span.

Thermocouple
Available with basic or universal signal conditioner

Type C20 to 2316°C (32 to 4200°F)
Type D20 to 2316°C (32 to 4200°F)
Type E -200 to 799°C (-328 to 1470°F)
Type J 0 to 816°C (32 to 1500°F)
Type K -200 to 1371°C (-328 to 2500°F)
Type N 0 to 1300°C (32 to 2372°F)
Type T -200 to 399°C (-328 to 750°F)

2

Pt 2

Available with universal signal conditioner

Type B 870 to 1816°C (1598 to 3300°F)
Type R 0 to 1760°C (32 to 3200°F)
Type S 0 to 1760°C (32 to 3200°F)

RTD Resolution (DIN or JIS)

1° (DIN) -200 to 800°C (-328 to 1472°F)
1° (JIS) -200 to 630°C (-328 to 1166°F)

0.1° (DIN and JIS)

Process

-999 to 9999 units for all: 0-5VÎ(dc); 1-5VÎ(dc); 0-10VÎ(dc);

0-20mA; and 4-20mA.

Input 2 slidewire feedback

100 to 1200Ω.

Line Voltage/Power

• 100-240Vı(ac/dc) +10 percent, -15 percent; 50/60Hz, ±5 percent.

• 24 to 28Vı(ac/dc) +10 percent, -15 percent; 50/60Hz, ±5 percent.

• Fused internally (factory replaceable only) Slo-Blo®type (time-lag):
2A, 250V for high voltage versions; 5A, 250V for low voltage versions.

• Power consumption 16VA maximum.

• Non-volatile memory retains data if power fails.

Operating Environment

• 0 to 55°C (32 to 130°F), 0 to 90 percent RH, non-condensing.

Storage Temperature

• -40 to 85°C (-40 to 185°F).

Terminals

• #6 compression universal head screws, accepts 28-14 gauge wire.

Shipping Weight

• .35 kg lbs (3.01 lbs).

Sample/Update Rates

• 1 input, PID and control outputs: 10Hz.

• 2 inputs: 5Hz.

• Display: 2Hz.

• Retransmit, remote set point and alarm outputs: 1Hz.

1

Electromechanical relays warranted for 100,000 closures only.
Solid-state switching devices recommended for applications requiring
fast cycle times or extended service life.

2

Not an ANSI/ASTM symbol.
UL®and C-UL®are registered trademarks of the Underwriter’s
Labortories, Inc.

0 to 1395°C (32 to 2543°F)

-73.3 to 537.7°C (-99.9 to 999.9°F)

Ordering Information

To order, complete the code number with the information below:

SERIES 981/982 98_ C - _ _ _ _- _ _ _ _

Single chanel 1⁄8 DIN ramping controller,
vertical or horizontal mount

Power Supply & Mounting

1 = 100 to 240Vı(ac/dc) nominal,

horizontal mounting

2 = 100 to 240Vı(ac/dc) nominal,

vertical mounting

3 = 24 to 28Vı(ac/dc) nominal,

horizontal mounting

4 = 24 to 28Vı(ac/dc) nominal,

v e r t i c a l mounting

Software

C = Standard (4-file, 6 step per file,

program capability)

Input 1

1 = Basic thermocouple signal conditioner

(excluding Type B, R, and S)

2 = Universal signal conditioner (see range information)

Input 2

0 = None
3 = Slidewire feedback (see range information)
5 = Second digital event (one digital event is

standard on all units)

Output 1

B = Solid-state relay, Form A, 0.5A, with RC suppression
C = Switched dc or open collector, isolated
D = Electromechanical relay1, Form C, 5A with

RC suppression

E = Electromechanical relay1, Form C, 5A without

RC suppression

F = Universal process, 0-5VÎ(dc), 1-5VÎ(dc),

0-10VÎ(dc), 0-20mA, 4-20mA, isolated

K = Solid-state relay, Form A, 0.5A, without

RC suppression

Output 2

A = None
B = Solid-state relay, Form A, 0.5A, with RC suppression
C = Switched dc or open collector, isolated
D = Electromechanical relay1, Form C, 5A with

RC suppression

E = Electromechanical relay1, Form C, 5A without

RC suppression

F = Universal process 0-5VÎ (dc), 1-5VÎ(dc),

0-10VÎ(dc), 0-20mA, 4-20mA, isolated

K = Solid-state relay, Form A, 0.5A, without

RC suppression

T = External signal conditioner power supply,

5, 12 or 20VÎ(dc) @ 30mA

Output 3

A = None
B = Solid-state relay, Form A, 0.5A, with RC suppression
C = Switched dc, isolated
J = Electromechanical relay1, Form A or B, 5A without

RC suppression
K = Solid-state relay, Form A, 0.5A, without RC suppression
M = Retransmit, 0-20mAÎ(dc), 4-20mAÎ(dc)
N = Retransmit, 0-5VÎ(dc), 1-5VÎ(dc), 0-10VÎ(dc)
T = External signal conditioner power supply, 5, 12 or

20VÎ(dc) @ 30mA

Output 4

A = None
B = Solid-state relay, Form A, 0.5A, with RC suppression
C = Switched dc or open collector, isolated
D = Electromechanical relay1, Form C, 5A with RC suppression
E = Electromechanical relay1, Form C, 5A without RC suppression
K = Solid-state relay, Form A, 0.5A, without RC suppression
R = EIA/TIA-232 communications, opto-isolated
U = EIA/TIA-232, EIA/TIA-485 communications, opto-isolated
S = EIA/TIA-485, EIA/TIA-422 communications, opto-isolated
T = External signal conditioner power supply, 5, 12 or

20VÎ(dc) @ 30mA

Display Color (Upper/Lower)

GG = Green/Green RG = Red/Green
GR = Green/Red RR = Red/Red