Watlow 92 User Manual
Series 92
User's Manual
DIN Rail Mount
Limit or Temperature
Control
Watlow Controls
TOTAL
CUSTOMER
SATISFACTION
3 Year Warranty
ISO 9001
Registered Company
Winona, Minnesota USA
Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580, Phone: 507/454-5300, Fax: 507/452-4507
0600-0020-0000 Rev. B (1291)
March 1998
Supersedes: W092-MA10-9311
WATLOW Series 92 User's Manual 1
Printed on Recycled Paper
$10.00
Made in the U.S.A.
General Description
The Watlow Series 92 is a DIN rail-mounted (DIN EN
50022) analog control. If a DIN rail is not available, the
Series 92 can be mounted using two screws. The
control mode is ON/OFF, limit or PI. The input for the
Series 92 is a single Type J, K or T thermocouple, or
DIN curve RTD sensor input. For the output device,
choose from an electromechanical relay, switched DC
voltage (open collector), solid state relay, or an optional
variable burst-fired output.
available with the PI version
input solid state relays. Set point options include a
remote or integral setpot assembly.
Variable burst-fired is only
, and can be used with DC
Specifications
Control Mode
• Heat or cool, factory selectable.
ON/OFF
• Switching hysteresis: Typically 3°F/1.7°C
PI: Time proportional with automatic reset
• Proportional band adjust: Typically 5 to 50°F/2.8 to
27.8°C
• Cycle time, fixed: Typically 6 seconds
• Automatic reset, fixed: Typically 0.25 repeats/minute
Limit
• Latching
• High or low, factory selectable
• Internal reset switch and/or customer supplied
remote reset switch. Automatic reset on power loss.
Operator Interface
• LED indication of limit condition or status of load.
• Setpot.
• Dial scale calibrated to compensate for sensor
non-linearities.
• Dual °F & °C scales.
• Remote or integral.
Input
• Thermocouple or RTD available.
• Thermocouple may be isolated or grounded.
• Thermocouple, automatic cold junction compensation.
• RTD input 2 or 3 wire, platinum 100 @ 0°C calibrated for #3850 (DIN): 0.003850 / °C. Contact
Watlow for #3916 (JIS) 0.003916 / °C)curve.
• T/C and RTD sensor break protection de-energizes
output to protect system.
• Sensor and ranges available:
Thermocouple
J1: J t/c 32 to 600°F or 0 to 315°C
J2: J t/c 32 to 1382°F or 0 to 750°C
K1: K t/c 32 to 2282°F or 0 to 1250°C
T1: T t/c -328 to 662°F or -200 to 350°C
RTD
P1: -328 to 1112°F or-200 to 600°C
• Lead resistance effect for type J, K, or T thermocouple input: 200 of lead resistance will cause
less than 1°F error. Refer to the lead wire
manufacturer's specification on ohms per double
foot for type and gauge of wire.
Output
• Electromechanical relay, Form C, 5A @ 120/
240VAC. Minimum offstate impedance is 20K .
Warranted to 100,000 cycles.
• Solid State Relay, Form A, 0.5A @ 24 VAC minimum, 264 VAC maximum, opto-coupled, zerocrossed switching. Minimum off state impedance
is 20K for output "B", and 31M for output "K".
• Open collector, switched DC signal provides a
minimum turn ON voltage of 3VDC into a minimum
500 load; maximum ON voltage not greater than
32VDC into an infinite load.
• Variable time base, open collector, switched DC,
Form A signal provides a minimum turn ON voltage
of 3VDC into a minimum 500 load; maximum ON
voltage not greater than 32VDC into an infinite load.
Available for PI control only.
Accuracy
• Calibration accuracy and sensor conformity:
± 1% of span maximum, at 77°F ± 5°F (25°C ± 3°C)
ambient and rated line voltage.
• Setpoint Accuracy: < ± 3% of range.
• Temperature stability: Typically ± 5µV / °F ambient
for thermocouple. Typically < 1°F from 32 to 130°F
for RTD.
• Voltage stability: ± 0.01% of span / % of rated line
voltage.
Agency Approvals
• UL, CSA and FM pending.
• Patent pending.
Terminals
• Captive screw, cage clamp connection. 0.155"
(4mm) maximum diameter screwdriver blade.
22 - 12 maximum wire gauge
Power
• Factory selectable.
• 120VAC: 85 to 132VAC, 50/60 Hz.
• 208/240VAC: 175 to 264VAC, 50/60 Hz.
• 6VA power consumption.
Operating Environment
• 30 to 140°F/0 to 60°C.
• 0 to 90% RH, non-condensing.
• Storage Environment: -40 to 158°F/-40 to 70°C.
Weight
• Control: 0.75 lb (0.34kg)
• Setpot: 0.20 lb (0.09kg)
2 WATLOW Series 92 User's Manual
Limit
Ordering Information
93
Line Voltage
A = 120VAC
B = 208/240VAC
Control Type
3 = Limit
Control Mode
1 = High (heat)
2 = Low (cool)
Output
D = Electromechanical relay, Form C, 5A
(Warranted to 100,000 cycles)
Input and Range See Page 2 for ranges
Separate Remote
Set Point Assembly
J1 = J t/c
J2 = J t/c
K1 = K t/c
T1 = T t/c
P1 = RTD
Setpot
0 = Integral
1 = Remote* (order setpot separately, see above)
A006-0 _ _ _
515
516
517
518
519
D2
000
On/Off
91
2
Line Voltage
A = 120VAC
B = 208/240VAC
Control Type
1 = ON/OFF control
Control Mode
1 = Heat
2 = Cool
Output
B = Solid state relay, Form A, 0.5A
C = Switched DC, open collector, non-isolated
D = Electromechanical relay, Form C, 5A
(Warranted to 100,000 cycles)
K = Solid state relay, Form A, 0.5A,
without contact suppression
Input and Range See Page 2 for ranges
Separate Remote
Set Point Assembly
A006-0 _ _ _
J1 = J t/c
J2 = J t/c
K1 = K t/c
T1 = T t/c
P1 = RTD
Setpot
0 = Integral
1 = Remote* (order setpot separately, see above)
515
516
517
518
519
000
PI
92
2
Line Voltage
A = 120VAC
B = 208/240VAC
Control Type
2 = PI control
Control Mode
1 = Heat
2 = Cool
Output
B = Solid state relay, Form A, 0.5A
C = Switched DC, open collector,
non-isolated
D = Electromechanical relay, Form C, 5A
(Warranted to 100,000 cycles)
K = Solid state relay, Form A, 0.5A
without contact suppression
V = Variable time base, open collector, non-
isolated Only available in
Input and Range See Page 2 for ranges
Separate Remote
Set Point Assembly
A006-0 _ _ _
J1 = J t/c
J2 = J t/c
K1 = K t/c
T1 = T t/c
P1 = RTD
Setpot
0 = Integral
1 = Remote* (order setpot separately, see above)
515
516
517
518
519
heat
mode.
000
WATLOW Series 92 User's Manual 3
Installation
3.89"
(99 mm)
3.72"
(95 mm)
0.33"
(8 mm)
2.28"
(58 mm)
1.62"
(41 mm)
0.18"
(5 mm)
35mm X 7.5mm
Rail is not included
in the assembly
Figure 1 - Series 92 Dimensions
RemovingMounting
Panel
Upper
Mounting
Clip
Lower
Mounting
Clip
Release
Lever
DIN Rail
Snap Action
Figure 2 - Series 92 Side View Mounting
0.11" Dia.
(3 mm)
4 mounting holes
1
500
200
300
100
100
0
10 11 12 13 14 15 16 17
Release Lever
2
3 4 5 6
300
C
F
SERIES 92
700
TYPE J T/C
8 9
7
(104 mm)
3.75"
(95 mm)
4.10"
4.45"
(113 mm)
800
500
1000
1100
600
700
1300
750
LOAD
BAND
DIN-Rail Mounting the Series 92
1. Place the Series 92 upper mounting clip on the top edge
of the DIN rail. See Figure 2.
2. Press down firmly on the top front edge of the Series 92,
see Figure 2
Mounting
for location. The control "snaps"
securely onto the rail. If the control does not snap on,
check to see if the DIN rail is bent. The DIN rail specification is DIN EN 50022, 35 mm X 7.5 mm. Minimum
clipping distance is 1.37" (34.8mm), the maximum is
1.39" (35.3mm).
Removing the Series 92 from the DIN-Rail
1. Place your fingers on the release lever located at the
base of the Series 92. See Figure 2
Removing
.
2. While gently pressing on the top of the case, above
Terminals 1 - 9 (see Figure 2 inset), pull forward on the
release lever.
Mounting the Series 92
1. Using the control as a location template, mark both
mounting holes.
2. Drill two 0.19" (5 mm) diameter holes in desired panel
location See Figure 1.
Tap drill size for Screw/thread size
#29 - 0.136 dia. #8-32
3.3 mm M4 x 0.7
2.69" sq.
(68 mm)
3.00" sq.
(76 mm)
Figure 3 - Setpot Dimensions
4 WATLOW Series 92 User's Manual
0.75"
(19.05mm)
1.4"
(36 mm)
2.25"
(57 mm)
Installing the Remote Setpot Assembly
1. Drill a 2.25" (57 mm) diameter hole (or use a 2.25", or
2.375" punch) at desired remote setpot assembly location. See Figure 3.
2. Using the dial scale as a location template, center and
mark all four mounting holes on the dial scale with a
center punch.
3. For a bolted dial scale assembly, drill four 0.125" (3 mm)
diameter clearance holes. If you are using a screw
assembly, use a tap drill.
Tap drill size for Screw/thread size
#43 - 0.089 dia. #4-40
#42 - 0.093 dia. #4-48
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