DISPLAYING ROOM TEMPERATURE
If the P5 parameter is set to display the temperature set point, the probe temperature
can be displayed by pressing the DOWN ARROW key for two seconds until Pb1 is dis-
played. Next, hit the SET key. To return to the normal display, press SET key.
MANUAL DEFROST ACTIVATION/DEACTIVATION
To manually activate the defrost cycle, press the UP ARROW key for four seconds.
This feature is disabled during heating operation.
PARAMETER LOCK OUT ACTIVATION/DEACTIVATION
The key pad lock out can be activated/deactivated by pressing the SET and DOWN
ARROW keys simultaneously for two seconds. The display will flash Loc or UnL to sig-
nify the change in states.
ALARM BUZZER RESET
The audible alarm can be silenced by pressing any key.
RESTORING FACTORY DEFAULT SETTINGS
Factory settings can be restored by following the below procedure:
• Pressing the UP ARROW and DOWN ARROW keys for four seconds until PA is
displayed
• Press the SET key
• Press the UP ARROW or DOWN ARROW to adjust the value to 743
• Press SET key
• Pressing the UP ARROW and DOWN ARROW keys for four seconds until dEF is
displayed
• Press SET key
• Press the UP ARROW or DOWN ARROW to adjust the value to 149
• Press SET key
• Cycle the power after the flashing dEF goes away
©Copyright 2009 Dwyer Instruments, Inc.
DWYER INSTRUMENTS, INC.
MOD-TRONIC Instruments Ltd
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
DISPLAY MESSAGES
Out 1 solidly lit
Output 1 is active
Out 1 flashing
Either modification of set point or call for load during
load protection (C1 or C2)
Defrost cycle is active
Alarm condition is present
°C
Temperature is measured in °C
°F
Temperature is measured in °F
Loc
Key pad is locked
Pr1
Probe 1 error
MAINTENANCE, CLEANING AND REPAIR
After final installation of the unit no routine maintenance is required. Clean the surface
of the display controller with a soft and damp cloth. Never use abrasive detergents,
petrol, alcohol or solvents. A periodic check of the system calibration is recommended.
The Series 40T is not field serviceable and should be returned if repair is needed (field
repair should not be attempted and may void warranty). Be sure to include a brief de-
scription of the problem plus any relevant application notes. Contact customer serv-
ice to receive a return goods authorization number before shipping.
Printed in U.S.A. 12/09
Phone: 219/879-8000
www.dwyer-inst.com
·
1 Delta Park Blvd, #12 Brampton, ON L6T 5G1
Fax: 219/872-9057
e-mail: info@dwyer-inst.com
The Series 40T Digital Temperature Switch accepts thermocouple and RTD inputs
to allow temperature measurements and set points up to 1999°F (1300°C). Observ-
ing the current status of the control is made easier with the 3-1/2 digit, multi-color LED
display that has alarm, defrost and output symbols. For added versatility, the temper-
ature units can be field selected for °F or °C. For cooling applications, manual defrost
mode can be initiated by pushing a single button. A flashing alarm informs users when
the current temperature exceeds preset limits. When programming multiple units, a
programming key is available to reduce set up time.
INSTALLATION
Note: Unit must be mounted away from vibration, impacts, water and corrosive
gases.
• Cut hole in panel 71 x 29 mm (2.80 x 1.14 in)
• Apply silicone around the perimeter of the hole to prevent leakage
• Insert unit into hole from the front side of the panel
• Slide the mounting bracket securely against the panel from the rear of the
unit
• Wiring diagram is displayed on top of the control
WIRING
Avoid installing the temperature probe cables in close proximity of any power cables.
If the length of the probe cables is longer than 100 meters, a recalibration adjustment
may be made using the CA1 parameter.
POWER
LOAD1
POWER
SUPPLY
16A
SUPPLY
250V~
1
2
3
4
5
6
Note: Terminals 4 and 5 are only on 115 VAC and 230 VAC. Models 12 to 24 VAC only
have terminals 6 and 7.
FR# R5-443741-00
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Series 40T Digital Thermocouple/RTD Temperature Switch
Specifications - Installation and Operating Instructions
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SPECIFICATIONS
Probe Range: K T/C: -140 to 1999°F (-100 to 1300°C);
J T/C: -140 to 1450°F (-100 to 800°C);
RTD: -320 to 1200°F (-200 to 650°C).
Input: Pt100 RTD and J/K type thermocouple.
Output: 16A @ 250 VAC SPDT relay (max current allowed is 10A).
Control Type: On/off.
Power Requirements: 12 to 24 VAC/VDC, 115 VAC or 230 VAC (depending on
model).
Accuracy: ±1% F.S.
Display: 3-1/2 digit red display.
Resolution: 0.1°C.
Memory Backup: Non-volatile memory.
Temperature Limits: 32 to 131°F (0 to 55°C).
Weight: 2.3 oz (65 g).
Front Panel Rating: IP 65.
Agency Approvals: UL, CE.
ADJUSTING PARAMETER VALUES
In order to change the parameter values, follow the procedure below:
• Press UP ARROW and DOWN ARROW simultaneously for four seconds until PA is
displayed
• Press SET
• Use UP ARROW or DOWN ARROW to adjust value to -19
• Press SET
• Press UP ARROW and DOWN ARROW simultaneously for four seconds until SP is
displayed
Pt100
• Use UP ARROW or DOWN ARROW to cycle through parameters
9
10
11
12
• Press SET to view value of parameter
TO 40X-K TO SUP. (OPT.)
• Use UP ARROW or DOWN ARROW to adjust value of parameter
• Press SET to store value
+
–
• Press UP ARROW and DOWN ARROW simultaneously for four seconds to exit
Tc J/K
menu
7
9
10
11
12
Phone: 219/879-8000
·
1-800-794-5883
·
www.mod-tronic.com
Fax: 219/872-9057
Bulletin T-40T
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www.dwyer-inst.com
e-mail: info@dwyer-inst.com
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