THORLABS TED200C User manual

Thermoelectric Temperature
Controller
TED200C
Operation Manual
2015

Version:
Date: 3.3 02-Jul-2015
Copyright © 2015 Thorlabs

Foreword
Contents 2
1General Information 3
41.1 Protection of the TEC element 41.2 Safety 61.3 Ordering Codes and Accessories
2Getting Started 7
72.1 Parts List 72.2 Preparation 82.3 Operating elements 92.4 First Operation
3Operating Instruction 10
103.1 External Connections 103.1.1 TEC Output 113.1.2 Connecting the TEC element 113.1.3 Control LED for TEC ON mode 123.1.4 Connecting a temperature sensor 143.1.5 Analog Temperature Tuning Input 143.1.6 Analog Temperature Output 153.2 Operation 153.2.1 Setting the TEC current limit 163.2.2 Adjusting Temperature Control Loop 173.2.3 Over-Temperature Protection 173.2.4 Disabling the Beeper
4Maintenance and Service 18
184.1 Line Voltage Setting 194.2 Replacing Mains Fuses 204.3 Troubleshooting
5 Appendix 21
215.1 Technical Data 235.2 Declaration of Conformity 245.3 Warranty 255.4 Exclusion of Reliability and Copyright 265.5 Thorlabs 'End of Life' Policy (WEEE) 275.6 Thorlabs Worldwide Contacts

© 2015 Thorlabs
We aim to develop and produce the best solution for your application
in the field of optical measurement technique. To help us to live up to
your expectations and improve our products permanently we need
your ideas and suggestions. Therefore, please let us know about
possible criticism or ideas. We and our international partners are
looking forward to hearing from you.
Thorlabs GmbH
Warning
Sections marked by this symbol explain dangers that might result in
personal injury or death. Always read the associated information
carefully, before performing the indicated procedure.
Please read these advices carefully!
This manual also contains "NOTES" and "HINTS" written in this form.
Attention
Paragraphs preceeded by this symbol explain hazards that could
damage the instrument and the connected equipment or may cause
loss of data.
Note
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© 2015 Thorlabs
1 General Information
3
1 General Information
The Thorlabs TED200C Thermoelectric Temperature Controller is aprecise temperature
controller for laser diodes and detectors.
The TED200C is excellently suited for:
·wavelength stabilization of laser diodes
·noise reduction of detectors
·laser diode's wavelength tuning by regulating the temperature
·modulation of wavelength by tuning the temperature
The TED200C is easy to operate via the operating elements on the front panel. Operating
parameters are shown on a5-digit LED display. UP-DOWN keys allow to select the parameter
to be displayed.
The P, Iand Dshares of the temperature control loop can be set independent of each other.
The TED200C operates with different temperature sensors -NTC thermistors and IC
temperature sensors are supported. With athermistor, the temperature is displayed in kW, with
atemperature sensor IC -in °C.
The output for the TEC current can be switched on or off via front panel key.
The temperature sensor and the TEC element are connected to a15-pin D-SUB jack at the
rear of the unit.
At the TE OUTPUT jack acontrol signal is available to drive an external LED to indicate TEC
ON mode when the TEC current is activated.
The set value of the temperature can be changed with aknob at the front panel or via an
analog input at the rear panel.
For monitoring purposes, an DC voltage proportional to the actual temperature is available at
the rear panel (CTL OUT).
The TED200C controller is cooled by an internal fan, which protects the unit against
overheating in case of high environmental temperatures. With free air circulation asafe
operation of the unit is guaranteed up to 40 °C ambient temperature.
Warning
Do not obstruct the air ventilation slots in the housing!
Note
In order to prevent damages to the laser diode, it is recommended to mount the laser into a
suitable Thorlabs laser diode mount (e.g., LM14S2, LDM21 or TCLDM9) and connect it to the
TED200C using the supplied Thorlabs CAB420-15 cable. This ensures the utmost protection of
the laser diode from damage by wrong connection.
In case of overheating, the output is switched off automatically in order to avoid damages. The
LED "OTP" (Overtemperature Protection) indicates the overtemperature. After atemperature
drop for about 10°C the LED "OTP" extinguishes and the output current can be switched on
again by pressing the key "ON".
If an error occurs (OTP or OPEN) the corresponding LED lights up and ashort warning beep is
heard.
The installed mains filter and the careful shielding of the transformer provide alow ripple at the
output.

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TED200C
1.1 Protection of the TEC element
·Limit of the TEC current in all operating modes
Protection against thermal destruction.
·Protection of the sensor
Protection against use of incorrect temperature sensors; protection against interrupted
connection of the temperature sensor.
·Contact protection of the TEC element (open circuit)
Protection against cable damage, bad contact or TEC element with too high resistance.
·Control LED for TEC current on
Protection against accidental turning off the cooling.
·Overtemperature protection
Protection against malfunction caused by internal overheating of the controller.
·Line failure protection
The TEC current is switched off immediately if apower failure or line interruption occurs. In
this case, same as after turning on the controller, the TEC current remains switched off and
can be switched on manually only.
1.2 Safety
Attention
All statements regarding safety of operation and technical data in this instruction manual will
only apply if the unit is operated correctly as it was designed for.
All modules must be operated with proper shielded connection cables only.
Only with written consent from Thorlabs may changes to single components be carried out or
components not supplied by Thorlabs be used.
This precision device is only serviceable if properly packed into the complete original packaging
including the plastic foam sleeves. If necessary, ask for areplacement package.
Prior to apply power to the TED200C controller, make sure that the protective conductor of the
3conductor mains power cord is correctly connected to the protective earth contact of the
socket outlet!
Improper grounding can cause electric shock with damages to your health or even death!
Also make sure that the line voltage setting of the fuse holder at the rear panel agrees with your
local supply and that the corresponding fuses are inserted. If not, please change the line
voltage setting (see section Line voltage setting )and the mains fuses (see section Replacing
the mains fuses ).
The TED200C controller must not be operated in explosion endangered environments!
Do not obstruct the air ventilation slots in housing!
Do not remove covers!
Refer servicing to qualified personnel!
Attention
Use only duly shielded connection cables for laser, photodiode and control input/output
connections.
Mobile telephones, cellular phones or other radio transmitters must not be used within the
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1 General Information
5
range of three meters of this unit since the electromagnetic field intensity may then exceed the
maximum allowed disturbance values according to IEC61326-1.
This product has been tested and found complying with the limits according to IEC 61326-1 for
using connection cables shorter than or equal to 3meters (9.8 feet).
Attention
The following statement applies to the products covered in this manual, unless otherwise
specified herein. The statement for other products will appear in the accompanying
documentation.
Note: This equipment has been tested and found to comply with the limits for aClass Bdigital
device, pursuant to Part 15 of the FCC Rules and meets all requirements of the Canadian
Interference-Causing Equipment Standard ICES-003 for digital apparatus. These limits are
designed to provide reasonable protection against harmful interference in aresidential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in aparticular
installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
·Reorient or relocate the receiving antenna.
·Increase the separation between the equipment and receiver.
·Connect the equipment into an outlet on acircuit different from that to which the receiver is
connected.
·Consult the dealer or an experienced radio /T.V. technician for help.
Thorlabs is not responsible for any radio television interference caused by modifications of this
equipment or the substitution or attachment of connecting cables and equipment other than
those specified by Thorlabs. The correction of interference caused by such unauthorized
modification, substitution or attachment will be the responsibility of the user.
The use of shielded I/O cables is required when connecting this equipment to any and all
optional peripheral or host devices. Failure to do so may violate FCC and ICES rules.

© 2015 Thorlabs6
TED200C
1.3 Ordering Codes and Accessories
Ordering code Short description
TED200C thermoelectric Temperature Controller, TEC current 0... 2A,
working with thermistors and IC temperature sensors (AD590, AD592,
LM135 and LM335) as temperature sensor, 5-digit LED-display
Shielded cable:
CAB420-15 Cable to connect the temperature controller TED200C to aThorlabs Laser
Diode Mount.
Note
The cable should not be manipulated as it serves multiple devices and therefore does not have
the standard pin assignment as described for TED200C.
Laser diode mounts for different laser diode packages:
TCLDM9 Temperature controlled laser diode mount for 3- and 4-pin TO18-packages
(9 mm CD, 5.6 mm CD)
LDM21 Miniature sized temperature controlled laser diode mount for 3- and 4-pin
TO18-packages (9 mm CD, 5.6 mm CD)
LM14S2 laser diode mount for laser modules in a 14-pin butterfly-package
(programmable pinning)
Please visit our homepage http://www.thorlabs.com for further information.

© 2015 Thorlabs
2 Getting Started
7
2 Getting Started
2.1 Parts List
Inspect the shipping container for damage.
If the shipping container seems to be damaged, keep it until you have inspected the contents
and you have inspected the TED200C controller mechanically and electrically.
Verify that you have received the following items within the package:
1. 1 TED200C controller
2. 1 power cord, connector according to ordering country
3. 1 operation manual
4. 1 connection cable CAB420-15
2.2 Preparation
Prior to operate aTED200C controller, check if the set line voltage matches with your local
power supply and if the appropriate fuses are inserted. (See sections Line Voltage Setting
and Replacing the Mains Fuses )
Connect the unit to the power line using the supplied cable. Turn the unit on by pressing the
line switch (F11) .
If required, the chassis ground can be connected to ground potential via the connector jack R4.
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TED200C
2.3 Operating elements
Front Panel
F1 -5-digit LED display
F2 LED "°C" Temperature display in C
F3 LED "kΩ" Resistance display in k
F4 LED "A" Current display in A
F5 LED "OTP" Over temperature protection is active
F6 LED "OPEN" TEC element is not connected or too high resistance
F7 LED "NO SENSOR" Temperature sensor is wrong or not connected
F8 LED "TEC ON" TEC output is switched on
F9 Key "TEC ON" On / Off switch for the TEC output
F10 -Knob for adjusting the set temperature / resistance
F11 -Line switch (ON / OFF)
F12 LIM I Potentiometer for setting the TEC current limit
F13 LED "TACT"Display shows the actual temperature / resistance
F14 LED "ITEC"Display shows the TEC current
F15 LED "TSET"Display shows the set temperature / resistance
F16 LED "ILIM"Display shows the current limit
F17 Key “DOWN” Select the parameter to be displayed
F18 Key “UP” Select the parameter to be displayed
F19 LED "AD590" Selected sensor is AD 590, AD 592, LM 135 or LM 335
F20 LED "TH 200kW"Selected sensor is thermistor in the 200 kWrange
F21 LED " TH 20kW"Selected sensor is thermistor in the 20 kWrange
F22 PPotentiometer for setting P- (gain) share of control loop
F23 IPotentiometer for setting I- (integral) share of control loop
F24 DPotentiometer for setting D- (derivative) share of control loop
F25 Key “SENSOR” Select sensor /disable I-share (press for more than 1sec.)

© 2015 Thorlabs
2 Getting Started
9
Rear Panel
R1 Analog temperature control input "TUNE IN", -10 ... +10 V
R2 Analog temperature control output "CTL OUT", -10 … +10 V
R3 Fan
R4 4 mm banana jack for chassis ground
R5 15-pin D-SUB jack for the TEC element and the temperature sensor
“TE OUTPUT”
R6 Serial number of the unit
R7 Indicator / switch for line voltage (included in fuse holder)
R8 Mains connector and fuse holder
2.4 First Operation
Attention
Prior to switch on your TED200C controller, please make sure that the line voltage setting
corresponds to your mains voltage! Mismatching may lead to damage of the controller!
Turn the unit on by pressing the line switch F11.
After switching on the unit, the LED display F1 and aLED, indicating the selected
measurement value (F13 ... F16), light up, otherwise please check the line voltage and the
mains fuses .
By using F17 and F18 keys, the displayed measurement value can be selected.
ATED200C controller is immediately ready to use after turning on. The rated accuracy is
reached, however, after awarming-up time of approx. 10 minutes.
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TED200C
3 Operating Instruction
3.1 External Connections
Prior to switch on the TED200C controller,all required external connections must be made
properly. Please read the following sections carefully.
3.1.1 TEC Output
The Thorlabs TED200C controller can drive all thermoelectric coolers up to acurrent of 2A.
The voltage drop across the TEC must not exceed the TED200C compliance voltage (6V)
If aThorlabs laser mount is used, just connect the 15-pin D-SUB jack "TE OUTPUT" (R5) of
the TED200C controller to the 9-pin plug "TEC DRIVER" of the Laser Diode Mount using the
supplied shielded cable CAB420-15.
Note
The cable should not be manipulated as it serves multiple devices and therefore does not have
the standard pin assignment as described for TED200C.
If aThorlabs laser mount TCLDM9 or LDM21 is used, in addition the polarity of laser diode and
photodiode must be set using the two slide switches at the laser mount. Please refer to the
individual operation manual of the laser diode mount.
If other laser diode fixtures are used, connect the TE cooler and the temperature sensor using
shielded cables to "TE OUTPUT" (R5) according to the pin assignment as shown below:
Pin #
Connection
TEC element, status indication:
5
TEC (+)
6
TEC (+)
7
TEC (+)
13
TEC (-)
14
TEC (-))
15
TEC (-)
1
Status LED (+) for TEC ON/OFF indication
Temperature sensor:
4
Thermistor (+)
3
Thermistor (-), ground
10
Transducer AD 590/592 (-), LM135/335 (+)
11
Transducer AD 590/592 (+), LM135/335 (+)
2
N.C.
9
N.C.
12
N.C.
8
AGND LM135/335 (-), Status LED (-)
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3 Operating Instruction
11
3.1.2 Connecting the TEC element
Connect the thermoelectric cooler between pin 5, 6, 7(TEC anode) and pin 13, 14, 15 (TEC
cathode) of the 15-pin D-SUB jack .
Attention
Amispoled TEC element may lead to thermal runaway and destruction of the connected
components.
Check the TEC polarity
·Turn on the Temperature Controller TED200C
·Connect the temperature sensor to the jack "TE OUTPUT" (R5)
(refer to "Connecting a temperature sensor ").
·Select the appropriate sensor type with the key (F25).
·Select a suitable current limit "ILIM" for the TEC element
(refer to “Setting the TEC current limit ").
·Switch the display to "TSET" and set the desired set temperature using the tuning knob.
·By pressing the key "ON" switch on the TED200C output current. The LED "ON" (F8)
lights up.
·Switch the LED display to "TACT".
If the TEC module is connected with correct polarity, the difference between the set
temperature "TSET"and the actual temperature "TACT"will decrease. If the control loop
parameters are set well (see section Adjusting Temperature Control Loop ), the actual
temperature approximates the set temperature within ashort time.
If the TEC module is connected with wrong polarity, the difference between set temperature
and actual temperature will increase continuously. Switch off the TEC current by pressing key
"ON" (F9) and change the TEC module wiring at the D-SUB plug connected to the jack “TE
OUTPUT” (R5).
3.1.3 Control LED for TEC ON mode
If aLED is connected between pin 1and pin 8as shown to the
left, this LED lights up when the TEC current output is switched
on.
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TED200C
3.1.4 Connecting a temperature sensor
The TED200C is compatible with anumber of temperature sensor types:
·NTC (standard thermistor)
·AD590/AD592
·LM135/LM335
The temperature sensor is selected at the front (key SENSOR -F25 ). The LED F19 to F21
indicate the selected sensor.
Temperature Ranges
·NTC (thermistor): 2 measurement ranges - 0 to 20kWand 0 to 200kW
·AD590/AD592/LM135/LM335): the measurement range -45°C to +145°C.
·The actual temperature control range depends on the sensor ratings and the individual
thermal setup.
If no temperature sensor is connected or if the temperature sensor does not correspond to the
selected sensor type, the LED “OPEN” (F6) lights up and the display (F1) indicates overflow
when "TACT"measurement value is selected.
The temperature sensor is connected to the 15-pin D-SUB jack "TE OUTPUT" (R5) at the rear
of the TED200C depending on the used sensor type.
Note
If LM135/LM335 is used as temperature sensor, select "AD590" (key F25). The LED
"AD590" (F19) lights up.
Thermistor
Athermistor is aresistor with aNegative Temperature Characteristic, that's why it is also known
as NTC. It's resistance decreases exponentially with the temperature.
Athermistor must be connected between pin 3and pin 4of the 15-pin D-SUB
jack (R5) .The polarity is not relevant, so far the thermistor is floating. If one
pin of the thermistor is grounded (for example in alaser module), this pin has to
be connected to pin3.
If the TED200C is operated with athermistor temperature sensor, the "TSET"
and "TACT"temperature is displayed as resistance in kW.
The NTC measurement current is 100µA in 20kWrange and 10µA in 200kW
range.
To describe the dependency of resistance vs. temperature, several algorithms
are known. Asimplified method, giving good results within arange relatively close to the
reference temperature, is the exponential formula:
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3 Operating Instruction
13
with: R0:Thermistor nominal resistance at temperature T0
T0:Nominal temperature (usually 298.15 K = 25°C)
Bval Energy constant
For R0and Bval please refer to the data sheet of the thermistor; T and T0are given in K (Kelvin)
If using athermistor, the resistance for agiven temperature TSET T0must be calculated first. If
the thermistor characteristic R(T) is given in the data sheet, the thermistor resistance can be
read directly. Then select "TSET"(key F18 or F19) to display the resistance set value. Adjust the
value using the tuning knob (F10).
AD 590/AD 592 Temperature sensor
AD590/592 are IC transducer type temperature sensors that
produce an output current linearly proportional to the absolute
temperature.
These devices act as current source, delivering 1µA/K within a
wide supply voltage range. They are calibrated to 298.2µA output
current at 298.2K (25°C).
An AD590/592 is connected between pin 10 (-) and pin 11 (+) of
the 15-pin D-SUB jack "TE OUTPUT" (R5)
The accuracy of the displayed temperature depends on the
tolerance of the used transducer.
LM135/LM335 Temperature sensor
The LMx35 Temperature Transducer Sensors operate as azener
diode (inverse current direction) with abreakdown voltage linearly
proportional to absolute temperature at +10 mV/K. They operate
over acurrent range of 400 µ A to 5mA.
ALM135/LM335 is connected to pin 10 (+), pin 11 (also +) and pin
8(AGND)of the 15-pin D-SUB jack "TE OUTPUT" (R5) at the rear
of the unit.
The accuracy of the displayed temperature depends on the
tolerance of the used transducer.

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TED200C
3.1.5 Analog Temperature Tuning Input
The set temperature "TSET"can be tuned by applying avoltage to the input "TUNE IN" (R1) at
the rear panel of the TED200C. The temperature set value is proportional to the sum of the
signal at input "TUNE IN" (R1) and of the value set with the adjustment knob (F10).
The tuning range for the analog control input "TUNE IN" depends on the connected sensor:
Sensor
Control Range
TUNE IN voltage
range
Conversion Coefficient
TH 20 K
0 ... 20 kW
0 ... 10 V
2 kW/V
TH 200 K
0 ... 200 kW
0 ... 10 V
20 kW/V
AD590/592;
LM135/335
-45 °C...+145 °C
- 2.25 V...+7.25 V
20 °C/V
Note
Only slow variations of the temperature set value (<< 1Hz) are possible via the analog control
input "TUNE IN".
The actual temperature "TACT"can be observed at the temperature monitor output "CTL
OUT" (R2).
3.1.6 Analog Temperature Output
The analog output "CTL OUT" (R2) delivers aDC voltage, proportional to the actual
temperature "TACT". The output voltage range depends on the used temperature sensor:
Sensor
Control Range
TUNE IN voltage
range
Conversion Coefficient
TH 20 K
0 ... 20 kW
0 ... 10 V
2 kW/V
TH 200 K
0 ... 200 kW
0 ... 10 V
20 kW/V
AD590/592;
LM135/335
-45 °C...+145 °C
- 2.25 V...+7.25 V
20 °C/V
To the analog output "CTL OUT" any measurement equipment can be connected directly.
Devices connected to these outputs should have an input resistance of 10 kW.
This monitor output is convenient to use for temperature monitoring e.g. during adjustment of
PID loop parameters.
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3 Operating Instruction
15
3.2 Operation
·Connect the jack "TE OUTPUT" (R5) at the rear panel of the TED200C to the input "TEC
DRIVER" of the Thorlabs Laser Diode Mount using the supplied cable CAB420-15. If a
different laser diode fixtures is used, the output jack “TE OUTPUT” (R5) must be connected
according to the TEC Output pin assignment ,see also "Connecting atemperature sensor”
.
·Switch on the Temperature Controller TED200C.
·Select asuitable current limit "I LIM "for the TEC element
·Select the used temperature sensor with key (F25).
Note
The TEC output can be switched on only if atemperature sensor is connected "TE
OUTPUT" (R5) and the sensor type is selected correctly. If the connected temperature sensor
does not correspond to the selected sensor type, the LED "OPEN" (F6) lights up. In this case
check the connection and the type of the temperature sensor.
·Select "TSET" to display the set temperature (keys F17 or F18)
·Set the desired temperature "TSET" using the tuning knob (F10).
·If athermistor is used, the instead of temperature (°C) the resistance is set (kW). If an
AD590/AD592 or LM135/LM335 is used as temperature sensor, the set temperature is
entered in °C.
·Switch on the TEC current output by pressing key "ON" (F9). The LED "ON" (F8) lights up.
Note
The TEC output cannot be switched on as long as the LED "OPEN" (F6) lights up. In such case
check the connection of the temperature sensor and the selected sensor type.
During operation between the displayed values for "TSET", "TACT", "ILIM"or "ITEC"can be
switched at any time by pressing (F17) or (F18).
3.2.1 Setting the TEC current limit
The Temperature Controller TED200C delivers amaximum TEC current of 2A. Prior to switch
on the TEC output, an appropriate TEC current limit "ILIM" should be set using the
potentiometer "LIM I" in order to avoid damage of the TEC element.
Alimitation of the maximum TEC current can be helpful to optimize the settling time in case of
alow thermal load (laser with low output power, set temperature close to environmental
temperature etc.)
Select the display parameter "ILIM"with the key (F17) or (F18).
Use ascrewdriver to set the desired TEC current limit "ILIM"with the 12-turn potentiometer "LIM
I" (F12).
Note
The current limit can be displayed at any time by selecting the parameter "ILIM".
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TED200C
3.2.2 Adjusting Temperature Control Loop
Temperature controllers are used to manage the temperature of thermo-electrically heated/
cooled components in experimental setups, independent of external influences. To adapt a
controller to different thermal loads, and to optimize the controller’s response characteristics,
the controlling parameters of the system’s feedback loop must be optimized. All Thorlabs’
temperature controllers provide aPID control loop whose shares (P, Iand Dshare) must be
matched with the thermal load of the device under test. For an optimum adaptation, these
parameters have to be adjusted separately and independent of each other. This section
describes how to optimize the PID parameters in order to get optimum performance from the
TED200C temperature controller.
·The P share (proportional, gain) can be adjusted with potentiometer "P" (F22).
·The I share (integral, offset control) can be adjusted with potentiometer "I" (F23).
·The D share (derivative, rate control) can be adjusted with potentiometer "D" (F24).
Preparation
1. Select "TACT"to display the actual temperature or thermistor resistance (keys F17 or F18).
2. Turn the three potentiometers "P" (F22), "I" (F23) and "D" (F24) completely counter-
clockwise.
3. Switch off the Ishare to ease the setting of Pand Dshares: Press key (F25) for at least one
second to switch off the Ishare. The sensor LED (F19/F20/F21) is flashing to indicate the "I
share off" state.
4. Set the temperature "TSET"to avalue around room temperature and switch on the TEC
current output (switch "ON" F9).
Adjust P share
Repeatedly increase and decrease the set temperature for about ±(1...2)°C around room
temperature using the tuning knob (F10) or by applying asuitable slow, square-wave signal to
the analog control input "TUNE IN" (R1) at the rear panel. Watch the settling behavior of the
actual temperature "TACT".
Note
The settling behavior can be observed at the "CTL OUT" output (R2).
Increase the P-share gradually by turning potentiometer (F22) clockwise.
Higher values will increase the settling speed. Too high values will increase the amplitude and
number of overshoots or will even make the system instable (continuous oscillation).
The Pshare is set correctly if the actual temperature remains stable near the set temperature
after only 2…3overshoots.
Adjust D share
Change set temperature again repeatedly for ±(1...2)°C around room temperature while
observing the settling behavior of the actual temperature.
Increase the Dshare gradually by turning potentiometer (F23) clockwise.
Higher values will decrease the amplitude and number of overshoots. Too high values will
increase again the amplitude and number of overshoots or will even make the system instable.
The Dshare is set correctly if the actual temperature remains stable at avalue near the set
temperature after aminimum of overshoots.

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3 Operating Instruction
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Adjust I Share
Turn on the Ishare, if it was if disabled, by pressing key (F25) for at least one second. The
sensor LED (F19/F20/F21) stops flashing if the I-share is enabled.
Change set temperature again repeatedly for ±(1...2)°C around room temperature while
observing the settling behavior of the actual temperature.
Increase the Ishare gradually by turning potentiometer (F24) clockwise.
Higher values will accelerate the settling to the set temperature. Too high values will increase
the amplitude and number of overshoots. The Ishare is set correctly when the actual
temperature reaches the set temperature in short time with at most one overshoot.
3.2.3 Over-Temperature Protection
The TED200C controllers come with an internal over-temperature protection. If the internal heat
sink is overheated, the output of the controller is disabled automatically. The LED "OTP" (F5)
lights up and ashort beep is heard. The TEC current is switched off immediately. Pressing the
key "TEC ON" (F9) has no effect in this case.
After the internal heat sink's temperature decreased for about 10°C, the LED "OTP" (F6)
extinguishes and the laser current output can be switched on again.
3.2.4 Disabling the Beeper
If audible signals are unwanted, the beeper can be disabled in this way:
·Press and hold the key “UP” (F18).
·Press the key “Down” (F17). Now the beeper state is displayed:
·“Sd.ON” - Sound ON
·“Sd.OFF” - Sound OFF
To change the beeper state, hold the key “UP” pressed and toggle the beeper state by pressing
"DOWN" key.

© 2015 Thorlabs18
TED200C
4 Maintenance and Service
Protect the TED200C from adverse weather conditions. The TED200C is not water resistant.
Attention
To avoid damage to the instrument, do not expose it to spray, liquids or solvents!
The unit does not need aregular maintenance by the user. If necessary the unit and the display
can be cleaned with acloth dampened with water. Amild 75% Isopropyl Alcohol solution can
be used for more efficient cleaning.
TED200C Controllers do not contain any modules and/or components that could be repaired by
the user himself. If amalfunction occurs, please contact Thorlabs for return instructions.
Do not remove covers!
To guarantee the specifications given in section Technical Data over along period it is
recommended to have the unit factory calibrated every two years.
4.1 Line Voltage Setting
The TED200C operates at fixed line voltages of
100 V +15% / -10% ( 90 V … 115 V)
115 V +15% / -10% (104 V … 132 V)
230 V +15% / -10% (207 V … 264 V)
line frequency 50 … 60 Hz.
The line voltage setting can be changed from the rear without opening the unit.
1. Turn off the controller and disconnect the mains cable.
2. The fuse holder (R10) is located below the 3-pole power
connector of the mains jack (R8). Release the fuse holder
by pressing its plastic retainers with the aid of asmall
screwdriver. The retainers are located on the right and left
side of the holder and must be pressed towards the center.
3. Unplug the white line voltage switch/indicator (R9,
containing the left fuse) from the fuse holder (R10), rotate it
until the appropriate voltage marking (100V, 115V, or 230V)
is on target for the cutout (R7) of the fuse holder, and plug
it back into the fuse holder. Press in the fuse holder until
locked on both sides. The appropriate line voltage marking
must be visible in the cutout (R7) of the fuse holder.
Attention
If you have changed to or from 230 V, also change the mains fuses to the correct value given in
section Replacing Mains Fuses .
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