Quick-Ohm QC-PC-PID-01 User manual

QC-PC-PID-01
Peltier-Controller
Manual

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Table of contents:
Technical specifications........................................................................................................................... 3
Intended use and description of the controller ...................................................................................... 3
Correct polarity of the Peltier element................................................................................................... 4
The thermal design.................................................................................................................................. 5
Before switching on................................................................................................................................. 6
The user interface (Menu)....................................................................................................................... 7
MONITOR-menu.................................................................................................................................. 8
SETPOINT-MENU ............................................................................................................................... 10
PASSWORD-MENU ............................................................................................................................ 11
CHANGE PASSWORD-MENU ............................................................................................................. 12
Safety query ...................................................................................................................................... 13
PARAMETER-MENU........................................................................................................................... 14
PA SET MENU .................................................................................................................................... 16
Software Version............................................................................................................................... 17
Controller connection ........................................................................................................................... 18
Before start-up ...................................................................................................................................... 19
First commissioning step by step .......................................................................................................... 20
Switch off current flow...................................................................................................................... 20
Parameter settings ............................................................................................................................ 20
Determine and set PM ...................................................................................................................... 21
Start temperature control................................................................................................................. 22
Adjustment of control parameters.................................................................................................... 23
General remarks on the control parameters KP, TN and TV................................................................. 24
Parameterization according to Ziegler & Nichols.................................................................................. 25
Summary of commissioning .................................................................................................................. 26
Reset controller to factory setting ........................................................................................................ 27
Drawing: ................................................................................................................................................ 28
Peltier controller ............................................................................................................................... 28
PT1000-Sensor................................................................................................................................... 29

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04.10.2021 20210927 QC-PC-PID-01-Bedienungsanleitung engl.
Quick-Ohm Küpper & Co. GmbH
Cronenfelder Straße 75
42349 Wuppertal
Germany
www.quick-ohm.de
www.quick-cool.de

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Technical specifications
Control range: -50°C to +150°C
Temperature measurement range: -60°C to +170°C
Sensitivity: 0,06 Kelvin
Accuracy: ± 1 Kelvin
Voltage supply: Vsupply = 12VDC –24VDC
Maximum output current: 8A
Maximum output voltage: approx. 95% Vsupply
Measurement cycle: approx. 3 measurements / second
Sensor type: PT1000
Additional output signal: 0 –10VDC / max. 80mA
„Open-Collector“ output: Imax 100mA / Emitter on ground
Intended use and description of the controller
The QC-PC-PID-01 is used for controlling temperature.
The controller detects the temperature via a PT1000 sensor (deliverables) and
controls a peltier element with a continuously regulated DC voltage.
The control can optionally be set to a P, PI, PD or PID modes.
The controller is operated and set using the integrated touchscreen. The user interface is embedded
in a menu structure. The controller may only be used up to a maximum current of 8A.

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Correct polarity of the Peltier element
In order for the controller to work, it is important to connect the Peltier element correctly. If the
Polarity of Peltier element is incorrect, uncontrollable high or low temperatures will occur during
operation.
Quick Ohm Peltier elements have their electrical
connections on the passive side (also called "hot
side") of the Peltier element. If the connecting
wires face towards the user with the red wire to the
right, the active side (also called "cold side") is at
the top. Quick-Ohm peltier elements have their
imprint on the “cold side”. The object to be
tempered must be thermally coupled to the cold
side. The other side must be thermally coupled to a
heat sink. If a voltage is applied to the connections, the cold side becomes cold when the voltage on
the red line is electrically positive compared to the voltage on the black line. For modules other than
Quick Ohm peltier elements, it is recommended to check the polarity. Depending on their
description, these modules might have to be connected the other way round.
Caution: A Peltier element may only be supplied with electricity if it is in thermal contact with a
sufficiently large heat sink, where heat can be dissipated. Areas that remain free and thus have no
possibility to dissipate thermal power can overheat in a few seconds.

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The thermal design
The Peltier element must be contacted on the entire surface on both sides. The cold side is contacted
with the object to be tempered. The object must accommodate the PT1000 sensor. For this purpose,
a hole of Ø3.1mm must be drilled in the body to be tempered. Ideally, this hole should be at least
30mm deep. The temperature is recorded via this sensor. The "hot side" must contact a heat sink
over the entire surface, The heat sink must be able to dissipate the thermal energy without the “hot
side” heating up excessively. The complete structure has to look like in the picture below. It is
irrelevant whether you are cooling with air or another medium.
The surfaces that are contacted with the Peltier element must have good flatness ≤ 0,02mm. For a
good thermal connection, the contact surfaces should also be filled with thermal conductive paste,
thermal oil or thermal conductive foil.
You can find information about the use of Peltier elements in our library on our homepage.

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Before switching on
Before switching on, the contents of these operating instructions must be carefully studied and
understood.
The controller may only be connected to a professional installed system.
Before switching on, make sure that the maximum permissible current of 8 amperes cannot be
exceeded. The data sheet of the Peltier element must be consulted for this.
Please read these instructions carefully. The menu is explained below. This is followed by a
description of a step-by-step start-up.

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The user interface (Menu)
After applying the supply voltage, the monitor menu is displayed on the touchscreen. All important
values and various states of the controlling are visualized here. From here you can access the
individual submenus.

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MONITOR-menu
The MONITOR-menu controls the process.
The MONITOR-menu shows all important values for controlling the control process.
Function Keys:
jumps to the software version menu
jumps to the SETPOINT-MENU
jumps into the PARAMETER-MENU with password protection
switches off peltier supply resp. switches on the peltier supply
Display fields:
T-BOARD shows the temperature of the electronics. The controller has a fan that continuously drives
air through the housing. This cools the electronic components. With sufficient cooling, the board
temperature is highlighted in green. If the colour changes to yellow, the cooling is insufficient. Check
if the fan is running. Check also the load current and the free air supply. If the board temperature
exceeds a critical value, the colour changes to red and the control switches off. The controller can
only be restarted when the board temperature has returned to the green area.
TARGET TEMPE shows the target value for the temperature
PM shows the maximum output voltage as a percentage of the supply voltage
ACTUAL TEMPERATURE shows the temperature currently measured on the sensor
TEC-CUR shows the current flow through the connected element
TEC-VOLT shows the current voltage at the output
TEC-POW shows the electrical power that is supplied to the connected element
(TEC-POW = TEC-VOLT X TEC-CUR)
Display Function:
Indicates power
supply to the
consumer is OFF
Key Function:
Tap to Turn ON the
power supply to the
consumer
Display Function:
Indicates power
supply to the
consumer is ON
Key Function:
Tap to Turn OFF the
power supply to the
consumer
Dual function:
Operation indicator light & Switch ON/OFF

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Bar display = Control value display (tacho)
The bar indicates the current status of the control system.
-up / red: Heating - Full deflection at maximum heating
-down / blue: Cooling - Full deflection at maximum cooling