Luxel Radak Power Controller II Series User manual

Radak Radak Power Controller II Series
Manual Rev 3.0
Covers controllers after SN 5034(II) and 1033 (II+)

PO Box 1879, 60 Salt Spring Drive
Friday Harbor, WA. 98250
www.luxel.com
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Power Controller II / II+

PO Box 1879, 60 Salt Spring Drive
Friday Harbor, WA. 98250
www.luxel.com
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Power Controller II / II+
Table of Contents
Introduction...................................................................................................................................... 1
Warranty....................................................................................................................................... 2
Specifications............................................................................................................................... 3
Operation.................................................................................................................................. 3
Electrical................................................................................................................................... 3
Mechanical ............................................................................................................................... 3
Feature Comparison Chart.............................................................................................................. 4
General Description......................................................................................................................... 5
Installation........................................................................................................................................ 6
Mechanical Installation................................................................................................................. 6
Electrical Connections ................................................................................................................. 6
Power input.................................................................................................................................... 7
Remote I/O............................................................................................................................... 9
Operation....................................................................................................................................... 13
Overview.................................................................................................................................... 13
Primary button functions:........................................................................................................ 14
Basic Controller Operation..................................................................................................... 14
Controller Displays ................................................................................................................. 15
Access Levels ........................................................................................................................ 15
RADAK Power Controller configuration....................................................................................... 19
Accessing the configuration level........................................................................................... 19
Instrument Configuration........................................................................................................ 20
Disabling manual operation.................................................................................................... 20
Enabling gain scheduling ....................................................................................................... 20
Process Value Configuration.................................................................................................. 20
High temperature limit ............................................................................................................ 21
Programmer Configuration..................................................................................................... 22
Limiting output power ............................................................................................................. 23
Setpoint Limits........................................................................................................................ 24
Programming.............................................................................................................................. 24
Program Behavior .................................................................................................................. 24
Sample Program .................................................................................................................... 25
Running Programs ................................................................................................................. 27
Stopping Programs................................................................................................................. 27
Modifying Program Parameters.............................................................................................. 27
Tuning..................................................................................................................................... 28
General notes on tuning......................................................................................................... 28
Controller high cutback setting............................................................................................... 28
Gain scheduling...................................................................................................................... 29
Auto tune................................................................................................................................ 29
Adaptive tune ......................................................................................................................... 29
Automation with the RADAK II+ power controller........................................................................ 30
I/O Points:............................................................................................................................... 30
Configuration:......................................................................................................................... 30
Example Control Schemes: ....................................................................................................... 31
Goal........................................................................................................................................ 31
Equipment .............................................................................................................................. 31
Assumptions........................................................................................................................... 31
RADAK Power Controller II+ ......................................................................................................... 35
Deposition Controller..................................................................................................................... 35
Maintenance.................................................................................................................................. 36
Troubleshooting............................................................................................................................. 37
Symptom ..................................................................................................................................... 37

PO Box 1879, 60 Salt Spring Drive
Friday Harbor, WA. 98250
www.luxel.com
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Power Controller II / II+
Possible causes............................................................................................................................. 37
Correction.................................................................................................................................... 37
Appendix I.................................................................................................................................. 38
Appendix II................................................................................................................................. 38

Page 1
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Introduction
Thank you for choosing a RADAK Power Controller II. We hope that you will find it simple to
operate while offering advanced control options. Although specifically designed and optimized for
controlling one of Luxel’s line of RADAK evaporation furnaces, your RADAK Power Controller II is
also well-suited for many other power control applications, such as lamps, filament heaters, etc.
Instructions for connecting your RADAK Power Controller II to these auxiliary devices is included
in an appendix.
*Caution! Installation must be carried out by qualified personnel. Failure to install or
operate this power controller in the manner described in this manual could result in injury
of the operator and/or failure of the controller to meet its stated specifications.
*Caution! Always unplug the power cord from the rear panel before removing any of the
cabinet covers or components. Line voltage is present on exposed connectors and
components inside the cabinet, and is capable of causing injury or death.
This manual is organized in a way that you should find convenient to look up the specific
information you need quickly and easily. Chapter 1 provides a general overview of the design of
the power controller. Chapter 2 describes the installation procedures necessary to safely place
the power controller into operation. Operation of the power controller is covered in Chapter 3.
The layout of this chapter is by task grouping (organized by specific results to be achieved), so
that you can quickly find out how to accomplish a specific goal. It is also useful to read over this
chapter to acquire a feel for the general method of configuring, programming, and operating this
power controller in its different operating modes. Chapter 4 covers maintenance of the power
controller. Troubleshooting follows in Chapter 5, which includes wiring diagrams and
replacement parts specifications.
Appendix I is included to assist those who desire to connect their power controller to devices
other than RADAK evaporation furnaces. It covers the information necessary to assess the load
for its suitable control, configure the power controller for a different sensor feedback, and tune the
controller for the load’s response.
Warning
*Caution! Installation must be carried out by qualified personnel. Failure to install or
operate this power controller in the manner described in this manual could result in injury
of the operator and/or failure of the controller to meet its stated specifications.
*Caution! Always unplug the power cord from the rear panel before removing any of the
cabinet covers or components. Line voltage is present on exposed connectors and
components inside the cabinet, and is capable of causing injury or death.

Page 2
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Warranty
Your RADAK Power Controller II is warranted to be free of defects due to materials or
workmanship for 1 (one) year from date of purchase. This warranty excludes damage caused by
improper installation and intentional or inadvertent misuse (e.g. operating into an unsuitable load).
In the event of a warranty claim, Luxel Corporation reserves the right to either repair or replace
the unit at our discretion.

Page 3
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Specifications
Operation
Temperature range:................................ 0 to 1500 °C (type C), 0 to 1200 °C (type K)
Temperature resolution: ......................... 0.1 °C (0 to 999.9 °C)
1 °C (1000 to 1500 °C)
Temperature units:.................................. °C, °F, K (selectable)
PID constants: ........................................ 2 sets
Environment:........................................... 0 to 55 °C operating ambient, 10 to 70 °C storage
5 to 95 % relative humidity, non condensing. Not suitable
for use at elevations greater than 2000 m, or in explosive
or corrosive atmospheres
Electrical
Input power:............................................ 115 Vac/60 Hz 12 A max
Fuses:..................................................... System –10 A fast blow; Controller –2 A fast blow
Thermocouples:...................................... Type C (0 to 1500 °C), or type K (0 to 1200 °C)
Furnace outputs:..................................... 0 to 40 Vac, at 0 to 30 A
Mechanical
Enclosure:............................................... 8.43 W x 5.25 H x 15.07 L (inches, excluding handles)

Page 4
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Feature Comparison Chart
Model:
II
II+
General
Incorporates Eurotherm Model #
2404
2404
RS 232 Communications
x
x
Auto-Tune algorithm
x
x
Output Channels
1
1
Programmer
Stored Programs
1
4
Program Segments
8
16
Stored programs can be linked
x
I/O
Analog inputs
1 PV
1 PV,
external
Software-selectable input source
x
x
All common thermocouple types
x
x
Custom linearization profile
x
x
All standard RTDs, pyrometers
x
x
Voltage, current inputs
x
x
User calibration
x
x
External control inputs
x
x
Digital I/O
2 input
3 input
Relay outputs
1 SPDT
2 SPST, 1
SPDT
Control schemes
PID
PID, external
PC Interface
Eurotherm iTools software for
configuration and control
x
x

Page 5
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
CHAPTER 1
General Description
The RADAK Power Controller II is constructed of three primary components, carefully selected to
work together and provide complete functionality. These components consist of a temperature
controller, a phase angle firing SCR, and an output transformer. The remaining components
inside the power controller enclosure support the operation of and add functionality to the primary
components. These components include switches, relays, connectors, and an auxiliary power
supply.
The temperature controller is a Eurotherm model 2404. This unit, described thoroughly in the
included Eurotherm user manual, accepts a thermocouple signal as a feedback input and
computes an output level which will achieve the desired setpoint value. The control scheme used
by the temperature controller is a PID (Proportional, Integral, Derivative) algorithm, widely used
for general control applications. By adjusting the three terms, P, I, and D, along with output
scaling and power cutback to reduce overshoot, the algorithm can be tuned for any temperature
range and device response to provide a rapid rise to the setpoint temperature with little overshoot
and quick temperature stabilization. In addition, the model II controller allows programming a
time/temperature profile, so that the temperature can be made to follow a sequence of step
changes, linear slopes, and dwell periods.
After computing an appropriate output level, the temperature controller sends a signal to the
phase angle firing SCR to regulate the line voltage being applied to the transformer. Phase angle
firing is used to provide a consistent and steady furnace temperature. An alternative to phase
angle firing, zero-crossing SCRs are much less expensive, but produce small oscillations of the
furnace temperature at steady state. This is due to the low thermal mass, and hence quick
response, of the RADAK evaporation furnace line.
The third important component is the isolation transformer. The transformer is installed on the
output of the SCR and serves two functions. First, the transformer scales the output voltage from
0-120 Vac (or 0-240 Vac) to 0-40 Vac. In addition, the transformer serves to isolate the furnace
(or other resistive load) from the power controller. This reduces the chance of ionic conduction
occurring in the source, which will appear as a short circuit.

Page 6
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
CHAPTER 2
Installation
This chapter describes the installation procedures for connecting a RADAK Power Controller II to
a vacuum system containing a RADAK evaporation furnace. For connection to other devices, it is
recommended that you read this chapter first, as it contains complete installation instructions.
Also read Appendix I, which contains some general guidelines for controlling other devices.
*Caution! Installation must be carried out by qualified personnel. Failure to install or
operate this power controller in the manner described in this manual could result in injury
of the operator and/or failure of the controller to meet its stated specifications.
*Caution! Always unplug the power cord from the rear panel before removing any of the
cabinet covers or components. Line voltage is present on exposed connectors and
components inside the cabinet, and is capable of causing injury or death.
Mechanical Installation
The RADAK Power Controller II series instruments are provided in a bench top configuration.
Rack mounting hardware is available to enable the power controller to be mounted in a standard
19 inch instrument rack. This hardware consists of steel angle brackets with bolt-on handles and
mounting screws.
To mount a single cabinet into an instrument rack, a rack mount adaptor is available or it will be
necessary to fabricate a metal support plate to secure the inboard side of the cabinet. This
consists of a simple 5¼ inch by 9¼ inch strip of metal (0.125 inch thick aluminum will work well)
containing holes to bolt to the power controller mounting bracket on one side and the instrument
rack on the other.
Two RADAK Power Controller II series instruments can be mounted side-by-side using only 5¼
vertical inches of rack space.
Electrical Connections
The following figure shows the rear panel of the RADAK Power Controller II.

Page 7
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Component
Supplied Accessories
Function
Power input
Power cable
Mains voltage input
System Breaker
10 A Breaker
Protects entire instrument
Controller
Breaker
2 A Breaker
Protects temperature controller
Comms
RJ-45 to Serial adapter cable
Computer/controller access
Thermocouple
1 ea. 6 ft extension cables
Feedback of measured temperature
Power output
Connector w/6 ft output cable
Power to external device (furnace)
Analog input (II+)
None –use male BNC cable
External device (deposition controller)
SCR control input
Remote I/O
6 ft Serial Cable
PLC I/O
Power input. The input power requirement for the RADAK Power Controller II is a single 15
Ampere circuit at 115 Vac, 60 Hz, via a standard three-prong grounded outlet (other input
voltages and frequencies can be optionally supplied).
System breaker. This breaker, installed on the main input, protects the entire instrument from an
over current situation. Input power to all components inside the RADAK Power Controller passes
through this breaker first. Its primary purpose, however, is to limit the current available to the
output transformer and associated wiring and components.
Controller breaker. This breaker, installed on the conductor supplying power to the temperature
controller and low voltage power supply, protects these components from an over current
situation.
Comms. This RJ-45 connector is used for serial communications with a personal computer. An
RJ-45 to serial communications cable is supplied with your controller. All functions and settings of
the controller are accessible through this link.

Page 8
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Thermocouple. The thermocouple provides feedback from the furnace or other attached device
as to its current temperature, which is the value of primary interest. The temperature controller
uses the error between the desired (setpoint) and measured temperatures to compute a new
output power level to apply to the heater coil. It is thus important to install the thermocouple cable
correctly so that the measured value accurately represents the furnace crucible temperature.
A thermocouple cable has been supplied with the power controller, comprised of 6 feet of the
proper type of extension wire fitted with a mating connector for the rear panel jack. This wire
should be routed away from sources of electrical noise, such as high frequency power supplies
and electric motors. If the length must be increased, it is preferable to replace the cable with a
single length rather than splicing an additional length of cable to the supplied cable. If the
required length is fairly long (>20 feet), it is better to use a shielded thermocouple cable to reduce
its susceptibility to electrical noise. Finally, if the required length is very long (>50 feet), a signal
retransmitter or amplifier should be used. A much better solution to these applications is to site
the power controller closer to the furnace, and operate the controller remotely using either RS
232 communications or the provided digital I/O functions.
The thermocouple extension cable must be connected to the vacuum feedthrough to which the
furnace thermocouple is connected. This vacuum feedthrough should be compatible with the
thermocouple type (C or K). Proper vacuum feedthroughs for thermocouples are readily available
from vacuum system parts suppliers, or are supplied with the optional installation kit from Luxel
Corporation or its distributors.
Power output. The heavy (10 gauge) output cable delivers the current supplied by the power
controller to the furnace. This cable size is specified to handle the maximum safe output current
of the power controller, even though in normal operation the current flow will be considerably less.
It is very important to consider the resistance and current when connecting the power controller to
a device other than a RADAK evaporation furnace. Please refer to Appendix I for details of these
calculations.
One end of the output cable is supplied with a mating plug to the rear panel receptacle, the other
end is supplied unprepared. The unprepared cable end should be connected to the feedthrough
by whatever means are appropriate for the feedthrough. Be careful, however, to connect it in
such a way that the full current load will not overheat the connection: i.e. use a large enough
connector for the current and make sure the crimp or solder joint is properly made.
The recommended feedthrough style is a pair of ¼ inch solid copper rods penetrating the vacuum
system. The output cable can then be connected to the rods using copper clamping connectors
secured to the feedthrough rods, with heavy crimp rings providing the attachment point of the
cable conductors to the copper rods. This is the connection method provided by the optional
installation kit.

Page 9
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Remote I/O
Many aspects of the operation of the RADAK Power Controller II+ can be initiated, controlled, or
monitored remotely through the use of the Remote I/O cable.
Remote I/O
Pin#
Color*
Point
Function
II/II+
1
Blk
LA
Logic A
14
Brn/Wht
LB
Logic B
2
Brn
LC
Logic com
15
Red/Wht
AA
Alarm (NO)
3
Red
AB
Alarm Com
16
Orn/Wht
AC
Alarm (NC)
II+ Only
4
Orn
2A
D1
17
Grn/Wht
2B
D2
5
Yel
2C
D3
18
Blu/Wht
2D
Dcom
6
Grn
3A
In +/R1
19
Prp/Wht
3B
NA/R1Com
7
Blu
3C
NA/R2
20
Red/Blk
3D
In-/R2Com
8
Prp
APS+
+12V
21
Brn/Blk
Relay 85
Gnd
9
Gry
Not Used
N/A
10
Wht
Not Used
N/A
11
Pnk
Not Used
N/A
12
Lt Grn
Not Used
N/A
13
Wht/Blk
Not Used
N/A
22
Yel/Blk
Not Used
N/A
23
Grn/Blk
Not Used
N/A
24
Gry/Blk
Not Used
N/A
25
Pnk/Blk
Not Used
N/A
* An I/O cable is provided for your convenience. Line color may change with cable manufacturer.
Each cable is shipped with a cable color code sheet if required. Verify pin assignment for best
results.
Logic Inputs –II/II+
Pin#
Color
Function
Default
1
Blk
Logic A
Available
14
Brn/Wht
Logic B
RemoteTrim
2
Brn
Logic Conm
The logic inputs can be used to initiate various events in the temperature controller, such as
starting and stopping programs, selecting a specific program to run, or selecting a different PID

Page 10
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
set to use. A full list of these possible uses can be found in the accompanying Eurotherm 2404
manual.
To use this capability, the temperature controller must be configured with the intended function of
each input. Then connecting the numbered input wire (1-black or 14- brown/white) with the
common wire (2-brown) causes the programmed function to occur, or become active. Removing
the connection causes the normally open, or default function, to occur. Note that more than one
input wire can be simultaneously connected to the common wire, so that functions can be used
together.
Alarm Changeover Relay Outputs –II/II+
Pin#
Color
Function
Default
15
Red/Wht
Alarm (NO)
Available
3
Red
Alarm Com
16
Orn/Wht
Alarm (NC)
The alarm changeover relay can be configured to become active upon the temperature controller
sensing certain events, such as the process value (furnace temperature) exceeding a preset
bound. This function is especially useful when operating the power controller in rate control mode.
The temperature controller can continue to monitor furnace temperature and activate the relay if
the temperature rises too high, as would happen if the source charge were depleted and the
deposition controller called for a higher output power in an attempt to bring the deposition rate
back into spec. The alarm relay would thus be a signal to the deposition controller to shut down
the process and alert an operator.
This relay is a changeover relay, meaning it has both normally closed (NC) and normally open
(NO) contacts. When inactive there is continuity between NC and common, and not between NO
and common. When active there is continuity between NO and common, and not between NC
and common.
Digital Inputs –II+
Pin#
Color
Function
Default
4
Orn
D 1
Prog. select
17
Grn/Wht
D 2
Prog. select
5
Yel
D 3
Prog. select
18
Blu/Wht
D Com
The digital inputs may be assigned to trigger various events but come pre-configured for program
select. The following illustrates the use of remote program select. Selection is initiated by making
electrical contact between the common (18)
Program
Activation wiring
1
All open
2
Blu/Wht (18) + Grn/Wht (17)
3
Blu/Wht (18) + Grn/Wht (17)+ Orn (4)
4
Blu/Wht (18) + Yel (5)
Remote Setpoint Trim –II+
The II+ can be configured with either an analog input for remote setpoint trim (default) or a dual
relay output if more I/O is needed.
Remote setpoint trim is used to allow rate control via an error signal supplied by a deposition
controller. Typically, the source would be conditioned using the appropriate ramps and soaks to
bring the evaporation rate as close as possible to the desired deposition rate then the remote trim

Page 11
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
would be enabled to allow the deposition controller to adjust temperature as needed to maintain
the desired rate.
Pin#
Color
Function
6
Grn
In +
19
Prp/Wht
N/A
7
Blu
N/A
20
Red/Blk
In -
For remote setpoint trim, a 0-10 VDC signal is supplied to pins 6(+) and 20(-). This signal
corresponds to + 100C. To enable remote trim, logic input B must be set to high (contact between
pins 2 and 14). When enabled, the temperature value corresponding to the voltage input will be
added to the current setpoint. For example, an input of 7.5 VDC corresponds to +50C so the
current setpoint will be increased by 50 degrees. Enabling remote setpoint with no voltage
applied corresponds to -100C so the temperature setpoint will drop by 100C. When connecting to
a deposition controller for rate feedback, it is recommended that the controller output be set to
50% (5VDC) for an initial setpoint change of 0C. Radak furnaces respond slowly when compared
to e-beams or sputtering sources so care is needed to properly tune your deposition controller.
If the controller is fitted with the dual relay option, setpoint trim is not available.
Wire Marking
Wire Color
Function
6
Grn
Relay 1
19
Prp/Wht
Relay 1
7
Blu
Relay 2
20
Red/Blk
Relay 2
If installed, the relay outputs are similar to the alarm changeover relay, with the exception that the
two relays do not offer both normally closed and normally open contacts. They can be configured
for either NO or NC operation to simply connect or disconnect one side to the other when active,
and reverse this when inactive. The relays can be configured to provide an event output
(explained further in the Event outputs below) which is activated by a running program in the
temperature controller.

Page 12
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Remote Control Functions
External SCR control select (II+)
Pin#
Color
Function
8
Black
External SCR control select +12VDC
21
Red
External SCR control select common
The remote control functions allow an external system controller to operate the internal control
relays that select whether the SCR is controlled by the temperature controller or by an outside
device such as a deposition monitor (II+).
To transfer complete control of the furnace to an external device, enable SCR Control. To enable
SCR control, by making contact between Pin 8 and 21. When SCR control is enabled, the normal
control signal from the 2404 is bypassed and the 0-10V signal from the analog input is used to set
0-100% output.
Caution: Improper use of SCR Control can result in erratic behavior and damage to your
furnace. Test the PID of your external device thoroughly before running unattended.
With direct SCR control there is no temperature limit to prevent damage to the furnace. To
prevent permanent damage to your furnace, it is recommended that the control signal be run
through the NC contact of the alarm relay and the alarm relay setpoint adjusted as desired to set
an upper limit on the furnace temperature.

Page 13
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
CHAPTER 3
Operation
Your RADAK power controller has been designed for maximum versatility, and offers two different
operating configurations. The first, and most basic, is pushbutton operation. In this mode all
parameters are set and any programming is done using the buttons on the front of the Eurotherm
2404 temperature controller along with the switches provided on the front and rear panels of the
power controller. While this operating mode provides access to all of the features of the
controller, it is more time consuming to enter programs and requires manually starting the
controller.
A second operating mode, RS 232 serial, is also available. If your RADAK power controller is
connected to a personal computer running the Windows® platform, you can use the Eurotherm
iTools software to set all controller parameters as well as to easily enter sophisticated
time/temperature profiles. The most current version of iTools is a free download available from
Eurotherm at (http://www.eurotherm.com/itools/). If you are connected to a different type of
computer, or a PC not running the Windows® platform, you can either use a standard
communications program in local mode to operate the power controller, or you can construct
custom software to operate the controller.
This chapter has been arranged by function to provide both the person commissioning and the
person operating the power controller with the most efficient means of obtaining instructions for a
specific operation or setting. It begins by providing general instructions on the three operating
modes described above: front panel operation, RS 232 communications, and digital control. This
is followed by a section addressing controller setup –designating functions to be attached to
specific inputs and outputs, and setting valid ranges and limits. Finally, a section is directed at
the operator, and covers profile programming and other operator functions.
Overview
There are six front panel buttons on the Eurotherm 2404 temperature controller. By pressing
these buttons in the proper sequence all of the controller functions can be accessed, all
parameters can be accessed and changed, and any allowable temperature profile can be
programmed. The six buttons are distinguished by symbols molded into them (or printed near
them), and have specific functions associated with each. The display consists of two lines of
numbers. The upper (larger) number shows by default the current measured temperature as read
by the thermocouple. The lower, smaller, number displays the current setpoint value. Note that
these displays represent many other values during configuration and programming, with the
current meaning of a display frequently indicated by a mnemonic.

Page 14
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Primary button functions:
or raise or lower the parameter that is currently in focus, by
default the temperature setpoint.
scroll through the different parameter lists
cycle through the various parameters in a given list
man/auto toggle the controller between manual mode and auto
mode. In manual mode, the arrow keys serve to raise or lower the
output power directly, rather than using the built-in PID control
algorithm. In auto mode the arrow keys allow changing the
temperature setpoint, which the PID algorithm attempts to follow.
run/hold toggles between running and pausing the current
program. Holding this button in for several seconds resets a
running program.
Basic Controller Operation
Switch on the power to the controller. The controller runs through a self-test sequence for
approximately three seconds and then displays the measured temperature, or process value, in
the upper readout and the target value, or process setpoint, in the lower readout. This is called
the home display. You can return to this display at any time by simultaneously pressing the 
and buttons.
Automatic mode- Output is automatically adjusted to maintain the process value.
Manual mode- Output power is controlled directly by the operator.
Program mode- Output power and process setpoint are automatically adjusted by the
controller.
Automatic Mode
The RADAK Power Controller is normally operated in automatic mode. If the MAN light is on,
press the AUTO/MAN button to select the automatic mode.
In the home display, both the process value and process setpoint are
shown. The setpoint is adjusted by pressing the or buttons. Two
seconds after releasing either button, the display blinks to show that
the controller has accepted the new value, and the controller adjusts
output power as required to obtain and maintain the new setpoint. The
RADAK Power Controller’s power response characteristics are
determined by the PID and output parameters described in the Tuning
section below.
OP1 will light whenever output 1 is on indicating that the controller is
applying power.
Manual Mode
Manual mode is used when direct operator control of output power level is desired. To operate
the controller in manual mode, press the AUTO/MAN button to toggle from auto to manual
mode. The MAN light will illuminate indicating manual mode operation.
The lower display now indicates the percent power output by the controller. Output can be
adjusted by pressing the or buttons.
NOTE: Extreme caution should be exercised when using the RADAK Power Controller in
manual mode as power is applied without regard to process value. Operating without the
RADAK Power Controller’s PID can result in potentially damaging temperature extremes.
Manual mode may be disabled as explained in the Disabling manual operation section on
page 20.
OP1
AUTO
MAN
HOLD
RUN
SP2
REM
OP2
2404
22.0
20.0
OP1
AUTO
MAN
HOLD
RUN
SP2
REM
OP2
2404
22.0
20.0

Page 15
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Program Mode
Perhaps the most convenient method of operation is the program mode. Stored programs
specifying setpoints, ramps and dwells may be used to control the operation of the RADAK Power
Controller II.
Controller Displays
The Eurotherm 2404 controller parameters are grouped in lists (run list, programmer list, setpoint
list, etc.) Access levels are used to determine the lists and parameters available to the. By
default, the RADAK Power Controller starts in the HOME display of the HOME
list of the Operator access level. This allows access to parameters required for
basic controller operation while limiting access to the more advanced controller
parameters.
Home List
Additional informational displays are available from the controllers HOME
display. NOTE: You can return to this display at any time by simultaneously
pressing the and buttons.
Pressing once will briefly display temperature units (C/F). If no further
action is taken, the unit then returns to the HOME display.
Pressing twice shows the output power (auto mode) or power setpoint
(manual mode) in percent. This is a read only value in auto mode; the controller
must be in manual mode to directly control power output. Press and 
together to return directly to the HOME display or cycle through the remaining
displays using the button.
Manual –Auto- This display is only available in full access mode. Press or 
to select Man or [Auto].
Heater current- Controller output in Amps. (Not used).
Customer defined ID number. Use or to select the unit ID number. This
number can be used to programmatically identify the controller in remote operations. Press to
return to the HOME display. Up to twelve additional controller parameters may be “promoted” to
the home display list (see Edit pg 17).
Access Levels
The Eurotherm 2404 controller uses access levels to group the system variables available to the
operator. There are four levels of access:
Operator
Full
Configuration
Edit





C.id
1
AmPS
5
m-A
Auto
OP
100.0
22.0
°C
22.0
20.0

Page 16
Phone: [phone]
Fax: [phone]
Email: [e-mail]
PO Box 1879, 60 Salt Spring Dr.
Friday Harbor, WA. 98250
www.luxel.com
Power Controller II / II+
Operator Access Level
This is the default operating access level. This level allows quick access to parameters relevant
to controller operation such as creating and running programs, running the controller auto tune,
and adjusting PID settings. All procedures discussed in the previous sections assume the
controller is in the operator access level. Additional parameters can be made available in this
level through the Edit level below.
In addition to the HOME list, six additional lists are available in the operator access level:
Run list
Program list
Auto tune list
PID list
Information list
Access list
Each list is accessed sequentially by pressing . Pressing accesses the parameters in each
list. Parameters in turn may be modified with the and keys. You can return to the home
display at any time by simultaneously pressing the and buttons.
Parameters pertinent to operating the RADAK Power Controller II will be discussed in the following
sections