Dwyer instruments, inc – Dwyer TSWB User Manual

Page 2

Parameter Programming
Programming the High and Low Set Point (HSP and LSP).

• Press SET HSP text will appear on the display.
• Press SET again. The value of HSP is shown on the display.
• The value can be modified with the UP and DOWN arrows.
• Press SET to enter any new value and exit to HSP label.
• Press the UP or DOWN arrows to go a LSP label.
• Press SET again. The value of LSP is shown on the display.
• The value can be modified with the UP and DOWN arrows.
• Press SET to enter any new value and exit to LSP label.
• Press SET and DOWN at the same time to exit programming or wait one
minute and the display will automatically exit programming mode.

Access to all code protected parameters.
• Press SET for 8 seconds. The access code value 0 is shown on the dis-
play (unit comes with code set at 0 from factor).
• With the UP and DOWN arrows, code can be set to user needs.
• Press SET to enter code. If code correct, the first parameter label is
shown on the display (HSP).
• Move to the desired parameter with the UP and DOWN Keys.
• Press SET to view the value on the display.
• The value can be modified with the UP and DOWN arrows.
• Press SET to enter the value and exit.
• Repeat until all necessary parameters are modified.
• Press SET and DOWN at the same time to quit programming or wait one
minute and the display will automatically exit programming mode.

* The keyboard code can be reset to ZERO by turning off the controller and
turning it on again while keeping the SET pressed.

Water Control
A water level sensor can be connected to the digital input. When the con-
trol detects an open signal, the unit is low on water. In this case the water
LED on the face of the control lights and the relay given by Out is excited.
When the control detects a closed signal, it indicates the presence of water
and the water LED is switched off and the correspondent relay is de-excit-
ed.

Default Working
In case of probe error or memory error:

the relay output R1 will remain Open.
the relay outout R2 will remain Close.
the relay outout R3 will remain Open.

LED Indication and Display Messages
Fuel LED indicates the stove is out of wood or corn.
Water LED indicates the unit is low on water.
In normal operation, the probe temperature will be shown on the display.
In case of alarm or error, the following messages can be shown:
•

Erl = Memory Error

•

ooo = Open Probe Error

• --- = Short Circuit Probe 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. All repairs must
be made by authorized personnel.

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000

www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.

Fax: 219/872-9057

e-mail: [email protected]

LOVE CONTROLS DIVISION

List of parameters

Description Units

Range

HSP

High Set Point

Degrees

r1 to r2

LSP

Low Set Point

Degrees

r3 to r4

r0h

Differential or hysteresis for HS

Degrees

1 to 99

roL

Differential or hysteresis for LS

Degrees

1 to 99

Lower value for HS

Degrees

-58 to r2

Higher value for HS

Degrees

r1 to 302

Lower value for LS

Degrees

-58 to r4

Higher value for LS

Degrees

r3 to 302

Time for revalue LS condition

Minutes

0 to 999

Reset of alarms

Range

Auto/hoL/Bot

LS is High or Low Set Point

Range

Low/High

Out

Relay Output State

Numeric

1 to 7

Ambient probe adjustment

Degrees

-30 to 30

Ambient probe type

Range

PTC/NTC

Access code to parameters

Numeric

0 to 255

Blinking of Low Fuel LED

Range

On/Off

Parameters Descriptions
HSP = High Set Point. (variable from r1 to r2).

Temperature of probe > HSP -->relay excites.
Temperature of probe < HSP-r0 -->relay de-excites.

LSP = Low Set Point. (variable from r3 to r4).

Temperature of probe < LSP -->relay de-excites.
Temperature of probe > LSP+r0 -->relay excites.

r0h = Differential or hysteresis for HSP.
l01 =

Differential or hysteresis for LSP.

r1 =

Lower value for HSP.

r2 =

Higher value for HSP.

r3 =

Lower value for HSP.

r4 =

Higher value for LSP.

t1 =

Time for revalue LSP condition.

If A0 = HoL when reset button is pressed the relay LSP is excited for t1
minutes. The process of the user pressing the manual reset button would
continue until the process temperature is above LSP.

A0 =

Reset of alarms.
Aut = Disabled manual reset.
Bot = Enable manual reset and automatic reset.
HoL = Enabled manual reset.

Out = Relay Output State.

P1 = Ambient probe adjustment. Offset degrees to be added to probe.
P5 = Ambient probe type. PTC or NTC.
H5 = Access code to parameters. (It is set to 00 from factory).
H6 = Blinking of fuel LED.

ON = If temperature of probe < LSP the fuel LED on the display
starts to blink. When Temperature of probe > LSP+r0 the fuel LED
is turned off.
OFF = fuel LED blinking disabled.

(*) Relay selection given by Out paramter.

FR# R7-443608-00

Profile

High Set Point

SPST NC (R1)

SPST NO (R2)

SPST NC (R1)

SPST NO (R2)

SPDT (R3)

Low Set Point

SPST NO (R2)

SPST NC (R1)

SPDT (R3)

SPST NO (R2)

SPDT NC (R1)

Water Probe

SPDT (R3)

SPST NO (R2)

SPST NC (R1)

SPST NO (R2)

SPST NO (R2) + SPST

NC (R1)

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