Dwyer instruments, inc – Dwyer TS2 User Manual

Page 2

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000

www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

Fax: 219/872-9057

PROGRAMMING PARAMETERS
Access only to Set Point SP (without code protection):
• Press and release SET. SP text appears on the display.
• Press SET again. The real value is shown on the display.
• Modify the value using the UP and DOWN keys.
• Press SET to store the new SP value.
• Press SET and DOWN to quit programming, or wait 1 minute for the

controller to TIMEOUT.

Access to all parameters (code protected):
• Press SET for 8 seconds. The access code value 00 is shown on the

display.

• Using the UP and DOWN buttons, select the code (factory-set code is

00).

• Press SET to enter the code. If it is correct, the first parameter label will

be shown on the display (SP).

• Move to the desired parameter with the UP and DOWN keys.
• Press SET to see the value.
• Modify the value with the UP and DOWN keys.
• Press SET to enter it, and exit to next parameter.
• Press SET and DOWN to quit programming, or wait 1 minute for the

controller to TIMEOUT.

SETTING THE KEYBOARD CODE TO ZERO

The keyboard code can be set to zero by holding the SET key and turning
the controller off then on again.

LED INDICATIONS
Out: This indicates that the compressor is connected. It waits the
programmed minimum stop time of the compressor.
Def: This indicates that defrosting is activated.

MESSAGES DISPLAY
In normal operation, the probe temperature will be shown. In case of alarm
or error, the following messages will be shown:
• Er- Memory error.
• -- Short-circuited probe error.
• oo- Open probe error.

PARAMETERS

PARAMETER DESCRIPTIONS
SP = Set Point. Temperature wished to regulate the machine. Can vary
from r1 to r2.
r0 = Differential

For heating control if temperature is > SP then output is OFF. When
the temperature drops to

For cooling control if temperature is < SP then output is OFF. When the

temperature increases to > SP + r0 the output is ON.

r1 = Lower Set Point Limit
r2 = Higher Set Point Limit
d0 = Heat or Cooling Control. Ht = heating control, Co = cooling control.
d2 = Defrosting Time Remaining, in minutes. If d2 = 0, defrosting will not
start.
d8 = Interval Between Two Defrostings, in hours.
c0 = Minimum time for compressor to be OFF. Minimum time from
when the compressor stops till it connects again.
c1 = Continuous Cycle Time. The remaining time for a continuous cold
cycle.
c2 = ON time of fault cycle, during probe error.
c3 = OFF time of fault cycle, during probe error.
P1 = Ambient Probe Calibration. Offsets degrees to adjust the ambient
probe.
P4 = Decimal Point. Display decimal point in normal operation. Always
present in parameter menus.
H5 = Access Code to Parameters. Factory-set as 00.
H6 = Ambient Probe Type. Sets probe type to be NTC or PTC.
t0 = Temperature Display Limit. Maximum temperature shown on the
display, although the real temperature can be greater.

OPERATION IN CASE OF ERROR
If the probe or thermostat memory should fail, the compressor will be
connected for 5 minutes ON then 5 minutes OFF.

MAINTENANCE

CLEANING
Clean the surface of the display controller with a soft, damp cloth. Never
use abrasive detergents, petrol, alcohol or solvents.

REPAIRS
After final installation of the TS Series Digital Temperature Switch, no
routine maintenance is required. A periodic check of system calibration is
recommended. The devices are not field repairable and should be
returned to the factory if recalibration or other service is required. After first
obtaining a Returned Goods Authorization (RGA) number, send the
material, freight prepaid, to the following address. Please include a clear
description of the problem plus any application information
available.

Dwyer Instruments,Inc.
Attn: Repair Department
102 Highway 212
Michigan City, IN 46360 U.S.A

SP
r0
r1

d0
d2
d8
c0
c1
c2
c3
P1
P4
H5
H6
t0

Description

Set point
Differential or hysteresis
Lower value for set point

Higher value for set point

Heating or cooling control
Time for defrosting
Interval time between defrosting
Minimum stop time for compressor
Continuous cycle time
ON time of fault cycle
OFF time of fault cycle
Ambient probe adjustment
Decimal point
Parameter access code
Ambient probe type
Maximum temperature on display

Units

degrees
degrees
degrees

degrees

option
minutes
hours
minutes
hours
minutes
minutes
degrees
option
numeric
option
degrees

Range

r1 to r2
1 to 20°
-50 to 150°C
-58 to 302°F
-50 to 150°C
-58 to 302°F
Ht/Co
0 to 59´
0 to 24
0 to 59´
0 to 24
0 to 999
0 to 999
-10° to 10°
yes/no
0 to 255
ptc/ntc
-50 to 150°C
-58 to 302°F

exi

Printed in U.S.A. 2/14

FR# R7-443771-00 Rev. 3