S E R I E S 9 7
An Over-temperature
Limit Controller
With User Defined
Messages
Watlow’s SERIES 97 is a microprocessor-based controller
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.
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
The SERIES 97 limit controller is added to thermal
applications to limit over-temperature conditions. 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.
Second auxiliary input
• Remote reset capability
Four outputs
• Handles high/low limit, alarms, communication
and retransmit requirements
Software and hardware lockouts
• High security
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-year
warranty.
WIN-97-1203
1241 Bundy Boulevard
Winona, Minnesota 55987-5580 USA
Phone: +1 (507) 454-5300
Fax: +1 (507) 452-4507
ISO 9001
e-mail: info@watlow.com
Registered Company
Winona, Minnesota USA
© 2003 Watlow Electric Manufacturing Company
Printed in the USA on Recycled Paper, 15 Percent Postconsumer Waste
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Allowable Operating Ranges
Thermocouple Inputs
• Calibration accuracy ±0.1 percent of span ±1˚C at
standard conditions
Exceptions:
Type T; 0.12 percent of span for -200°C to -50°C
(-328°F to -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
Type J:
Type K:
Type T:
Type N:
Type E:
Type C:
Type D:
1.0
0.1
0
to 815°C or
32 to 1500°F
0.0 to 815.0°C or 32.0 to 999.9°F
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
1.0 -270 to 400°C or -454 to
0.1 -199.9 to 400.0°C or -199.9 to 750.0°F
1.0
0.1
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
1.0
0.1
1.0
0.1
750°F
0
to 1300°C or
32 to 2372°F
0.0 to 999.9°C or 32.0 to 999.9°F
0
to 2315°C or
0.0 to 999.9°C or 32.0 to 999.9°F
to 2315°C or 32 to 4200°F
0.0 to 999.9°C or 32.0 to 999.9°F
to 1395°C or 32 to 2543°F
0.0 to 999.9°C or 32.0 to 999.9°F
32 to 4200°F
0
RTD Inputs
Type PTII: 1.0
0.1
Type R:
Type S:
Type B:
0
• 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
1.0
1.0
1.0
0
0
0
to 1760°C or
to 1760°C or
to 1816°C or
32 to 3200°F
32 to 3200°F
32 to 3300°F
DIN
JIS
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
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
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-voltage directive
Functionality Matrix
Terminals
• Touch safe
• 22 to 12 AWG
High/ High/
Low Low
232
485
Universal
Input
Event
Limit Alarm Retransmit Comm
Input 1
Power
Input 2
• 100-240VÅ(ac) +10 percent, -15 percent; 50/60Hz,
±5 percent
• 24-28VÅ(ac) or VÎ(dc) +10 percent, -15 percent;
50/60Hz, ±5 percent
Output 1
Output 2
Output 3
Output 4
• 7.0VA maximum power consumption
• Data retention upon power failure via nonvolatile
memory
Note: These specifications are subject to change without prior notice.
Operating Environment
• 0 to 65°C (32 to 149°F)
• 0 to 90 percent RH, non-condensing
• Storage temperature: -40 to 85°C (-40 to 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)
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Ordering Information
SERIES 97
9 7
-
-
Microprocessor-based
1
⁄
16
DIN with universal input 1,
thermocouple and RTD.
Options include: software, power
supply, input 2, four outputs and
display color
Power Supply
A
B
= 100-240Vı(ac/dc)
= 24-28Vı(ac/dc)
Auxiliary Input 2
0
1
= None
= Event input
Limit Output 1
D
= Electromechanical relay, Form C,
2A, without RC suppression
Panel Cutout
44.958 mm x 44.958 mm
(1.77 in. X 1.77 in.)
Alarm Output 2
52.070 mm
(2.050 in.)
A
C
D
= None
96
= Switched dc output/open collector
1
2
3
4
%
= Electromechanical relay, Form C,
2A, without RC suppression
52.070 mm
(2.050 in.)
K
= 0.5A solid state relay without
RC suppression
Alarm Output 3
RESET
A
D
= None
= Electromechanical relay, Form C,
2A, without RC suppression
Auxiliary Output 4
A
D
= None
107.747 mm
(4.242 in.)
= Electromechanical relay, Form C,
2A, without RC suppression
98.425 mm
(3.875 in.)
R
U
M
= 232 Communications
= 485 Communications
= Universal Retransmit, range selectable: 0-20mA,
4-20mA, 0-5VÎ(dc), 1-5VÎ(dc),
0-10VÎ(dc)
59.182 mm
(2.330 in.)
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
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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