winkler L-400 Series User manual

Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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Rev.0.1.2021-08
Operation Manual
Temperature Controller
Series L-400
L-430

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
2 von 12
Rev.1.0 2021-09
Table of content
1 Safety information...............................3
1.1 Place of application of the unit ...........3
1.2 Instructions for installation .................4
2 Start-up and adjustment of controller 5
3 General information............................5
4 Control panel.......................................6
4.1 Overview of functions .........................6
4.2 Standard display information..............6
4.3 Status LED............................................6
4.4 Error detection ....................................7
5 Set-up menu........................................7
5.1 Adjustment of set-point ......................7
6 Pre-order settings................................8
6.1 Lower / Upper limits............................8
6.2 Range...................................................8
6.3 Type of sensor .....................................8
6.4 Temperature monitor or limiter......... 8
6.5 Temperature limiter ........................... 8
6.6 Temperature monitor......................... 8
6.7 Limit temperature............................... 8
6.8 Hysteresis............................................ 8
6.9 Unit ..................................................... 9
6.10 Power-on option................................. 9
6.11 Stop after error................................... 9
7 Controller On / Off.............................. 9
7.1 Display during power up..................... 9
8 Troubleshooting................................ 10
9 Repair and maintenance................... 11
10 Disassembly and disposal ................. 11
11 EU-Declaration of conformity........... 12

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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Rev.1.0 2021-09
1Safety information
Before putting the unit into operation, the safety information, the instructions for
installation and the operating manual that is supplied with the unit must be read and
observed.
Please read the safety information carefully and comply with the items stated. This is a matter of
safety for personnel and equipment. The unit is predominantly designed as a temperature controller
for electrical heating systems. Improper application, installation, configuration or operation of a
system or that which goes against the machine's intended purpose may cause severe personal
injuries and extensive property damage!
Important: This unit is not a safety temperature limiter according to DIN EN 60730-1
The unit must not be installed in potentially explosive atmospheres. If a process function originating
from an explosion-risk area is to be processed by the unit installed outside the explosion-risk area, all
supply lines of the unit leading into the explosion-risk area must be guided via safety barriers!
The prerequisite for error-free and safe operation of the unit is its careful transport and storage, as
well as correct assembly and installation. This device may only be installed, configured,
parameterized and commissioned by qualified persons who are familiar with installation,
commissioning and maintenance of comparable devices and with the system in which the device will
be applied and who have appropriate knowledge in the field of instrumentation and control.
Operating staff of the system in which the device is to be used must be instructed on operation and
control of the unit by qualified persons.
Please observe and comply with:
•The contents of the present manual for installation and operation of the unit, in particular
the information on installation, taking into operation, any notes in bold print and adjustment
of the device to suit the overall system.
•Any and all safety information attached to the unit.
•Any and all relevant safety regulations for installation and operation of electrical systems.
•The keeping of this manual in a safe place for future use.
The regulations stated in the present manual are applicable and valid in all EU countries. For use of
the device outside of an EU country, the relevant national rules and regulations must be considered.
This device has been produced and tested in accordance with DIN EN 61010 Part 1 “Safety
requirements for electrical equipment for measurement” and has left our company in an error-free
condition in terms of its safety and functionality.
1.1 Place of application of the unit
The unit is designed as a temperature controller-limiter for flexible application in electrical heating
systems. The place of operation or installation of the temperature controller must not be close to

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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Rev.1.0 2021-09
motors, transformers, circuit breakers or other inductive loads, it must be shock-free and vibration-
free . The ambient temperature at the place of installation must be between −20 °C and 50 °C, with a
relative humidity of < 90 % (noncondensing). Aggressive and corrosive gases and vapors may damage
the unit.
1.2 Instructions for installation
Please read the installation instructions carefully and comply with all conditions mentioned here
during installation of the unit. In case of non-compliance with the Instructions for installation, faults
or malfunctions may occur or the unit may fail to comply with the required EMC guidelines and the
conditions for CE-conformity will not be fulfilled.
Before connection of the unit and before putting it into operation, please ensure that the operating
voltage and the conditions for the operating voltage required by the unit correspond to the
conditions on site (cf. name plate). If required, take any appropriate measures.
Please make sure that the control and load voltage on site are switched off and secured against
accidental reactivation during installation of the device. The electrical connections must be made on
the basis of the connection diagram and the relevant national rules and regulations. The supply lines
for the device must be laid such that they are free from any tensile loads and are not exposed to risks
of shearing or crushing under any circumstances.
The mains connection and the connections for the loads must each be provided by suitable cables
with a cross-section of a minimum of 1.5 mm².
For sensor lines and signal lines, it is highly recommended to use shielded cables (especially if lines
are long and/or running along potential sources of interference); for thermocouples, shielded
compensation lines should be used likewise. Sensor lines and signal lines must be installed such that
they are spatially separated from the load and control lines (high-voltage lines). If signs of incorrect
switching behavior are detected the circuit must be put out of service until remedial action.
For intermediate clamping of compensation lines for thermocouples, no regular terminals may be
used, since this would result in generation of additional thermocouples that may falsify the
measuring results.
Connect the shield of the sensor lines and the signal lines with the signal ground as close to the unit
as possible and lay a line with a diameter of minimum 1.5 mm² from this point to the PE bus bar
along the shortest possible route.
Any inductive loads activated by the unit, such as contactors, valves, motors, transformers, etc. must
be wired separately and interferences must be prevented using device-specific suppression devices.
For type L-430, the load circuit is fused against excess current by means of an internal miniature fuse.
For 16A types the load circuit must be protected against excess current by means of a suitable
external fuse. (See Chapter Fehler! Verweisquelle konnte nicht gefunden werden., page Fehler!
Textmarke nicht definiert.)

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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Rev.1.0 2021-09
The present manual does not contain all notes for regulations, standards, etc. that must be observed
and complied with during working with the unit in connection with systems and plants. Any such
regulations, standards, etc. shall be complied with and observed by the operator of the unit with
regard to specific requirements of the respective system or plant.
2Start-up and adjustment of controller
The unit is delivered with preconfigured setup and can be used plug and play.
Power on
Carefully inspect the wiring and connections once again.
Incorrect wiring or connection of the unit may cause severe damage of the unit and the plant. On
first power-on, the actual setpoint has to be checked and corrected if necessary. Otherwise damage
to equipment or persons is possible!
Now, switch on the operating voltage of the unit.
Setup
If the desired setpoint is not preconfigured, please change the setpoint to the desired value. Please
refer to chapter 5.1 on page 7
3General information
The L-400 is a compact, feature rich, easy to use FAT Temperature Controller. FAT stands for Fast-
Adaptive-Tuning. A novel algorithm permanently adjusts the control parameters to the control
process. This leads to precise control for a variety of heaters. The common adjustment of PID
controllers or the execution of an auto tuning procedure is obsolete.
The self-optimizing controller logic leads to an efficient adaption to any closed-loop controlled pass
and quickly reaching adjustment between set-point temperature and actual (temperature) value.
Many functions are pre setup and facilitate the everyday use. The optional limiter or monitor
function provides the extra for safety.
The L-400 is equipped with a long-life hybrid-relay designed for low thermal losses inside the
housing.
A multi-colored LED is signaling the different operating modes, easy viewable in the distance. The
large segment display also allows easy readable temperature values.
Electronics are protected against overcurrent and high thermal load.

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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Rev.1.0 2021-09
4Control panel
4.1 Overview of functions
•Controller On / Off: simultaneous pressing Up Button and Down Button for about 1
second.
•Change Set-Point Temperature: Press Up or Down Button
•Failure receipt: pressing Up or Down Button to acknowledge the failure if it has been
corrected
4.2 Standard display information
•Actual (temperature) value: Actual temperature measured by
connected temperature sensor
4.3 Status LED
Starting procedure:
After connecting to power supply, the controller starts with a self-test: white is LED on.
After Self-test successfully completed, the LED is shortly green and then controller starts heating.
If a failure is detected an error signal will show up: see 4.4 Error detection.
Heat-up phase:
1 Hz
Usually, after startup, the temperature is below the set point and the signal LED flashes slowly (1 Hz)
blue. This means that the heating is active and the set point is not reached yet.
Set-point temperature reached:
The Controller works at set-point temperature inside the range: green LED permanent on
3-digit 7-segment-display
Up / Down Buttons
Status LED
Self-test

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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Rev.1.0 2021-09
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Temperature monitor:
The LED remains green at set-point temperature in-between the range. Above and below this
temperature range the LED starts to blink with a frequency of 1 Hz. Blue signals too low and red too
high temperatures.
Temperature
Time
4.4 Error detection
From start and during operation the controller is permanently checking the following failure:
1. PCB temperature
2. sensor break
Signal LED on failure
If any failure occurs the controller stops heating (stand-by) and the Signal LED starts fast blinking with
a frequency of 4 Hz:
1. Device failure: 4 Hz
2. Sensor failure:
Display on failure
•Err <> 5Y5 : System Error
•Err <> 5en : Sensor failure
•Err <> xot : Device too hot
Failure notes can be reset by pressing Up Button or Down Button. If the failure note cannot be
reset by this procedure, the occurring problem has to be solved and the controller reconnected to
power supply to restart the controller.
Please also see chapter 8 Troubleshooting on page 10.
5Set-up menu
5.1 Adjustment of set-point
To get from normal operation directly to set point adjustment, just press the button or .
The current setpoint temperature will start blinking. Now the temperature can be adjusted with the
too hot
Set Point ± Range
too cold

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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Rev.1.0 2021-09
/ buttons. By pushing both and together the new temperature get set. Also after 10 sec.
the new value will automatically be used.
6Pre-order settings
The following parameters can be specified during order process to customer needs:
6.1 Lower / Upper limits
Limits for minimum and maximum temperature values of the set-point adjustment. This avoids
accidentally wrong setting of setpoint values according to used heater. Limits can be adjusted
according to selected sensor type or application specific.
6.2 Range
Current actual temperatures inside the Range are considered balanced to the set-point value,
signaled by the green LED-light on. The larger the value, the lesser switching cycles are needed. By
this, the Temperature can be held closer to set point or to increase lifetime of the switch (default:
±3 °C).
6.3 Type of sensor
The type of sensor is customer selectable out of a variety of sensor types. (see datasheet for
available types) Sensor is factory preset and can be chosen upon order.
6.4 Temperature monitor or limiter
Additional to the controller a monitor or limiter function is available.
6.5 Temperature limiter
The limiter shuts off the heater, if the temperature limit is above the limit. The device shows a yellow
flashing status LED (1 Hz)and Err <> Lin (Error Limiter). To acknowledge the error press both
and . The device restarts normal operation, if the temperature is below the limit with hysteresis.
6.6 Temperature monitor
The monitor shuts off the heater, if the temperature is above the limit. The status LED starts slow
yellow flashing (1 Hz). If the temperature is again below the limit with hysteresis, then the controller
returns automatically to normal operation.
6.7 Limit temperature
The limit temperature depends on the used heater and the heated material. The purpose is to
protect the heater or the heated material against over temperature. The value is preconfigured
application or customer specific.
6.8 Hysteresis
The hysteresis is preset to ±3 K. The device stops heating control if the temperature is above the limit
+ 3 K. And restarts heating control if below limit –3 K

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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6.9 Unit
Selection between degree Celsius and degree Fahrenheit.
6.10 Power-on option
This defines the behavior of the controller after connecting to mains supply. Possible options are:
-Always power on: Controller starts up every time mains supply gets connected.
-Stay off: Controller stays off after mains supply gets connected. Controller must be switched
on manually by pressing the keys and simultaneously.
-Last state: Controller changes to the last state before power loss.
6.11 Stop after error
If this option is set to “yes” (factory default), the controller remains stopped after each error and
shows the error permanently. Heating is deactivated.
If this option is set to “no”, the controller waits till the error condition is solved and automatically
continues operation.
7Controller On / Off
The controller switches automatically on with the power supply connected.
By simultaneously pressing and the controller goes to standby or can be powered on again.
During Standby the device shows 0ff in the display.
7.1 Display during power up
During the start sequence first the firmware version is shown. Then follows the setpoint 5etand
limit value lin with the value and the configured unit.

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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8Troubleshooting
Error:
Actions:
Display stays off
•Check power supply
•press and together for a few seconds to power on.
•Disconnect and reconnect controller from mains supply.
•Contact Service.
Message Err 5en
•Check wiring for short circuit or wire breaks, check connection
in Terminal / Plug.
•Check resistance value of Sensor.
•Replace Sensor.
Message Err xot
•Press or to acknowledge error or disconnect controller
from mains supply and let cool down. Then reconnect.
•Check correct connection in terminals for mains supply and
heater connection.
•Provide better air circulation.
•Check current in Heater circuit.
Message err 5y5
•Disconnect and reconnect controller from mains supply.
•Message still appears? Contact service.
•Message does not appear? Check all settings and readjust if
necessary.
Service mail: [e-mail]

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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9Repair and maintenance
If the controller is damaged, please return the controller to us with an error description.
Maintenance intervals and Maintenance directives according to DGVU Rule 3 apply.
If the device is dirty, turn power off, and clean it with a damp cloth. Heavy dirt may be cleaned with a
non-abrasive, solvent-free cleaning agent.
10 Disassembly and disposal
The device may only be disassembled when it is switched off, disconnected from the
mains and secured!
Electronic devices are recyclables and do not belong in the household waste! Dispose of
the product at the end of its service life in accordance with applicable legislation.

Operation Manual
Controller Series L-400
Winkler AG ▪ Englerstrasse 24 ▪ D-69126 Heidelberg ▪ Tel. [phone] ▪ Fax: [phone] ▪ [e-mail] ▪ www.winkler.eu
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Rev.1.0 2021-09
11 EU-Declaration of conformity