Dwyer Instruments Love 40T Series Installation and operating instructions

Series 40T/40M Digital Temperature Switch
Specications - Installation and Operating Instructions
Bulletin T-40T
The Series 40T/40M Digital Temperature Switch accepts a variety of inputs to allow
temperature measurements and set points up to 1999°F (1300°C). Observing 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 temperature
units can be eld selected for °F or °C. For cooling applications, manual defrost mode
can be initiated by pushing a single button. A ashing alarm informs users when the
current temperature exceeds preset limits.
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
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
• Use UP ARROW or DOWN ARROW to cycle through parameters
• Press SET to view value of parameter
• 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
menu
SPECIFICATIONS
Range: Current: -1999 to 1999; Voltage: -1999 to 1999; 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); PTC: -58 to 300°F (-50 to 150°C); NTC: -40 to 230°F (-40
to 110°C); N. RTD: -110 to 570°F (-80 to 300°C).
Input: RTD thermocouple, thermistor current and voltage (depending on model).
Output: 16A @ 250 VAC SPDT relay (max current allowed is 10A).
Control Type: On/off.
Power Requirements: 12-24 VAC/VDC, 115 VAC or 230 VAC (depending on
model).
Accuracy: ±1% FS.
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.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: [phone]
Fax: [phone]
www.dwyer-inst.com
e-mail: [email protected]
2-31/64 [63.22]
1-3/32
[27.94]
3 [76.20]
1-1
1/32
[33.99]
2-3/8 [60.33]

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.
ELECTRIC
SYSTEM
POWER SUPPLY
PTC/NTC
PROBES
12
1110
9
12
11
12
11 10
12
11
12
IN COM COM
IN CP COM
COM
IN
12 V
ROOM
ROOM
ROOM
ROOM
J/K
THERMOCOUPLES
2/3 WIRES PT 100,
PT 1000 AND
NI 120 PROBES
0-20/4-20 mA AND
0-10/2-10 V
ACTIVE TRANSDUCERS
2/3 WIRES 4-20 mA
PASSIVE
TRANSDUCERS
IN
11 10 9
76
5
4
3
21
MAX. 10 A
K 1
LOAD
PARAMETER LIST
Parameter Description Units Range Factory Setting
SP
CA1
P0
P1
P2
P3
P4
P5
r0
r1
r2
r3
r5
C1
C2
C3
C4
C5
d0
d3
d4
d5
d6
A1
A2
A3
A4
A5
A6
A7
E9
Set point
Ambient probe adjustment
Type of input probe
Decimal point position
Display units
Minimum process input value
Maximum process input value
Value displayed during normal operation
Set point differential
Minimum set point value
Maximum set point value
Set point locked
Cooling or heating
Minimum time between compressor starts
Minimum compressor stoppage time
Minimum on time of compressor
Off time of fault cycle
On time of fault cycle
Interval between defrost
Duration of defrost cycle
Defrost on power up
Defrost delay upon power up
Display during defrost cycle
Alarm set point 1
Alarm delay for A1
Alarm 1 type
Alarm delay upon set point modication
Alarm set point 2
Alarm delay for A2
Alarm 2 type
Reserved for future use
Degrees
Degrees
Option
Option
Option
Counts
Counts
Option
Degrees
Degrees
Degrees
Option
Option
Minutes
Minutes
Seconds
Minutes
Minutes
Hours
Minutes
Option
Minutes
Option
Degrees
Minutes
Option
Minutes
Degrees
Minutes
Option
None
r1 to r2
-25 to 25
0 to 13
0 or 1
0 or 1
-999 to 1999
-999 to 1999
0 or 1
0.1 to 99.0
-199.0 to r2
r1 to 1999
0 or 1
0 or 1
0 to 240
0 to 240
0 to 240
0 to 240
0 to 240
0 to 99
0 to 99
0 or 1
0 to 99
0 or 1
-199 to 1999
0 to 240
0 to 4
0 to 240
-199 to 1999
0 to 240
0 to 4
None
0.0
0.0
0
1
0
-20
80
0
2.0
0.0
350.0
0
1
0
0
0
10
10
8
0
1
0
1
0.0
0
0
0
0.0
0
0
None

PARAMETER DESCRIPTION
SP Sets ambient temperature set point between r1 and r2
CA1 Ambient probe calibration adjustment
P0 Type of input probe
P1 Position of decimal place
P2 Display engineering units
0 = °C
1 = °F
2 = No units
P3 Minimum value for process input
P4 Maximum value for process input
P5 Value shown during normal operation
0 = Probe temperature
1 = Set point
r0 Set point differential or hysteresis
r1 Minimum value for set point
r2 Maximum value for set point
r3 Set point lock out
0 = Unlocked
1 = Locked
r5 Selection of heating/cooling operation
0 = Cooling
1 = Heating
C1 Minimum time between compressor starts
C2 Minimum time compressor must remain off before being restarted
C3 Minimum time compressor must remain on after being started
C4 During probe error, time compressor is off
C5 During probe error, time compressor is on
d0 Interval of time between defrost cycles (if 0, defrost will never be activated)
d3 Duration of defrost cycle
d4 Start defrost cycle upon power up
0 = No
1 = Yes
d5 Defrost delay time upon power up (d4 must be 1)
d6 Temperature shown during defrost
0 = Display probe temperature
1 = Display probe temperature up to (set point + r0) if probe temperature
is below (set point + r0) at activation of defrost cycle. Display probe
temperature if the probe temperature is above (set point + r0) at activation
of defrost cycle.
A1 Alarm 1 temperature set point
A2 Alarm 1 not activated unless temperature remains in alarm state for this
time
A3 Alarm 1 type
0 = Alarm disabled
1 = Absolute low alarm (A1)
2 = Absolute high alarm (A1)
3 = Deviation low alarm (SP - A1)
4 = Deviation high alarm (SP + A1)
A4 Temperature alarms not activated for this time after modications to set
point
A5 Alarm 2 temperature set point
A6 Alarm 2 not activated unless temperature remains in alarm state for this
time
A7 Alarm 2 type
0 = Alarm disabled
1 = Absolute low alarm (A1)
2 = Absolute high alarm (A1)
3 = Deviation low alarm (SP - A1)
4 = Deviation high alarm (SP + A1)
E9 Reserved
40T 40M
0 = J type thermocouple
1 = K type thermocouple
2 = 3 wire Pt100 RTD
3 = 2 wire Pt100 RTD
40M
0 = PTC
1 = NTC
2 = J type thermocouple
3 = K type thermocouplee
4 = 3 wires Pt 100
5 = 2 wires Pt 100
6 = 3 wires Pt 1000
7 = 2 wires Pt 1000
8 = 4-20 mA
9 = 0-20 mA
10 = 2-10 V
11 = 0-10 V
12 = 3 wires Ni 120
13 = 2 wires Ni 120

Printed in U.S.A. 3/21 FR# 443741-00 Rev. 6©Copyright 2021 Dwyer Instruments, Inc.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: [phone]
Fax: [phone]
www.dwyer-inst.com
e-mail: [email protected]
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
displayed. 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 ash Loc or
UnL to signify 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 ashing dEF goes away
MAINTENANCE, CLEANING AND REPAIR
After nal 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/40M is not eld serviceable and should be returned if repair is needed
(eld repair should not be attempted and may void warranty). Be sure to include a
brief description of the problem plus any relevant application notes. Contact customer
service to receive a return goods authorization number before shipping.
DISPLAY MESSAGES
Out 1
solidly lit
Output 1 is active
Out 1
ashing
Either modication 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