PXM LED Driver 3 x 6A OC User manual

MANUAL
LED Driver
3 x 6A OC
PX254
R

tel.: (12) 385 83 06
fax: (12) 626 46 94
E-mail: [email protected]
Internet: www.pxm.pl
Rev 2.3
PXM Marek Żupnik spółka komandytowa
Podłęże 654
32-003 Podłęże
CONTENTS
Manufacturer reserves the right to make modifications in order to improve device
operation.
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1. General description...............................................................................................................
2. Safety conditions...................................................................................................................
3. Description of the connectors and control elements.............................................................
4. Designation of displayed messages......................................................................................
5. Device programming.............................................................................................................
5.1. Button features...................................................................................................
5.2. DMXaddressing: group and individual...............................................................
5.3. Colour mode......................................................................................................
5.4. Reaction of the device to DMX signal interruption.............................................
5.5. MASTER/SLAVE function..................................................................................
5.6. White balance....................................................................................................
5.7. Smooth...............................................................................................................
5.8. Light control frequency.......................................................................................
5.9. Screen saving....................................................................................................
5.10. Display function................................................................................................
5.11. Default settings and memory error...................................................................
5.12. RDM description of available parameters........................................................
5.13. Programming scheme......................................................................................
6. Cennection scheme..............................................................................................................
7. Dimensions...........................................................................................................................
8. Technical data.......................................................................................................................
Declaration of conformity..........................................................................................................

3
PX254 voltage driver is designed to control the LEDs. Built-in DMX receiver allows for controlling
3 channels (R, G, B) directly with the DMX protocol. Wide range of power supply voltage and high
current carrying capacity outputs permit a control of large quantities of LEDs
PX254 can be either controlled by DMX, and act independently. In this case, the user is offered a
fully programmable scene and 18 pre-programmed sequences, which can also freely change the
playback speed and fluidity changes in steps.
The driver has a built-in tuning frequency signal system ("flicker free" technology), which makes it
particularly useful in applications for the television industry.
Since LEDs of RGB series often have different parameters, the driver can limit the maximum
power of some output channels.
The PX254 is produced in common anode version - it allows LEDs connection on common
anode.
1. GENERAL DESCRIPTION
2. SAFETY CONDITIONS
PX254 LED Driver 3 x 6A OC is a device powered with safe voltage 24 V; however, during its
installation and use the following rules must be strictly observed:
1. The device may only be connected to 7 - 24 V DC with current-carrying capacity compatible
with technical data.
2. All the conductors should be protected against mechanical and thermal damage.
3. In the event of damaging any conductor, it should be replaced with a conductor of the same
technical data.
4. Connection of power supply can only be made with a conductor of minimum cross-section area
2
of 2,5mm and DMX signal with shielded conductor.
5. All repairs and connections of outputs or DMX signal can only be made with cut off power
supply.
6. PX254 should be strictly protected against contact with water and other liquids.
7. All sudden shocks, particularly dropping, should be avoided.
8. The device cannot be turned on in places with humidity exceeding 90%.
9. The device cannot be used in places with temperature lower than 2°C or higher than 40°C.
10. Clean with damp duster only.

4
3. DESCRIPTION OF THE CONNECTORS AND CONTROL ELEMENTS
DMX address of a device - a basic item in the MENU
setting parameters for each channel individually
DMX address setting
control method selection (RGB, LIGHTNESS / COLOUR, etc.)
no DMX signal response method selection
MASTER / SLAVE mode settings
LIGHTNESS /COLOUR control mode
RGB control mode
setting parameters for all channels simultaneously
HSL control mode - HUE / SATURATION / LIGHTNESS
RGB Dimmer control mode
effect control mode
all outputs at 100%
all outputs off
dynamic white
inverting the meter display 180 degrees
4. DESIGNATION OF DISPLAYED MESSAGES
3.
5.
6.
4.
1.
2.
1. DMX512 output
2. DMX-512 input
3. power supply
4. display
5. control outputs
6. programming keys

5
scene
number of channels being sent in the MASTER mode
white colour balance setting
red balance
green balance
blue balance
white colour balance on / off
program playback speed
level of steps change smoothness in the program
red during scene programming colour
green colour during scene programming
basic frequency of brightness control
blue colour during scene programming
screen and DMX signal LED blanking
MASTER mode on / off
DMX address settings for first channel
programme no. 17
memory error message
restore default device settings menu

5.1. Button features
5. DEVICE PROGRAMMING
escape
previous
next
enter
5.2. DMX addressing: group and individual
6
After you switch on the module, its display shows the program version for a brief moment.
To access the main menu, press „enter”, and the display will show Adr. Press „previous” or „next”
to select the appropriate menu and press „enter” to confirm your selection.
- goes back to the previous MENU level or discards changes made
- scrolls to the previous feature on the same MENU level or decreases
the parameter's value
- scrolls to the next feature on the same MENU level or increases
the parameter's value
- enters the next MENU level and confirms changes made
The PX254 menu allows the user to set a DMX address in the 1 - 512 range. It is possible to set an
address individually “IND” for each channel or on a group basis “ALL” for all the channels
simultaneously.
ON A GROUP BASIS
Using the NEXT or PREVIOUS keys, set the desired DMX address by selecting values from 1 to
506÷511 (depending on the control mode selected) and press ENTER. The address thus set will
be assigned to the first channel, subsequent DMX addresses will be assigned to subsequent
channels.
Once an address is programmed in this manner, the individual settings for each channel are
cancelled.
enter
enter
enterenterenter
next
next
next
next
ON AN INDIVIDUAL BASIS
Using this menu you can set a DMX address
individually for all the channels (the number of
channels depends on the control mode
selected).
After you select IND in the main menu, press
ENTER to confirm your selection.
Using the PREVIOUS or NEXT keys, select
the channel you want to set (Ad1 - Ad7) and
press ENTER.
Using the PREVIOUS or NEXT keys, select a
value from the range 1 - 512 and press
ENTER.

5.3. Colour mode
Description guide of EFF mode settings - (the table on the next page):
7
- possibility to control a given parameter of a selected mode
character ("-") - no possibility to control a given parameter of a selected mode
character ("x")
CHANNEL1 - red component
CHANNEL2 - green component
CHANNEL3 - blue component
CHANNEL4 - operating mode selection
CHANNEL5 - speed settings (higher value - quicker changes)
CHANNEL6 - fade settings (higher value - smoother transition)
CHANNEL7 - lightness settings (higher value - stronger glow)
This driver can operate under various control modes. Depending
on the mode selected, the device will occupy different numbers
of DMX channels.
The following modes are available:
ŸHSL mode (Hue, Saturation, Lightness) is available on 3 DMX channels,
responsible for hue, saturation and lightness of output channels, respectively;
Ÿ3bd mode (3-byte plus a dimmer) - direct control of three channels, with a dimmer
on the fourth channel;
Ÿ3b mode (3-byte) mode - direct control of three channels only; the fourth channel
is inactive;
Ÿ2b mode (2-byte) - operation in this mode involves selecting one of the 256
colours, defined by the manufacturer, on one DMX channel and lightness on the
other DMX channel;
ŸdW mode - dynamic white - control of 2 channel: cold white + warm white. The first
DMX channel is responsible for colour temperature, and the other channel - for
lightness. The third DMX channel be left empty or for monochrome lamp.
ŸEFF mode - an effect control mode. It is available on 8 DMX channels and allows
you to select desired effects and their parameters.
enter
enter
next
enter
next
next
next
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next

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Channel 1
RED
Channel 2
GREEN
Channel 3
BLUE
Channel 4
MODE
Channel 5
SPEED
Channel 6
FADE
Channel 7
BRIGHTNESS
–
–
–
0 ÷ 7 - Program 1
x
x
x
–
–
–
8 ÷ 15 - Program 2
x
x
x
–
–
–
16 ÷ 23 - Program 3
x
x
x
–
–
–
24 ÷ 31 - Program 4
x
x
x
–
–
–
32 ÷ 39 - Program 5
x
x
x
–
–
–
40 ÷ 47 - Program 6
x
x
x
–
–
–
48 ÷ 55 - Program 7
x
x
x
–
–
–
56 ÷ 63 - Program 8
x
x
x
–
–
–
64 ÷ 71 - Program 9
x
x
x
–
–
–
72 ÷ 79 - Program 10
x
x
x
–
–
–
80 ÷ 87 - Program 11
x
x
x
–
–
–
88 ÷ 95 - Program 12
x
x
x
–
–
–
96 ÷ 103 - Program 13
x
x
x
–
–
–
104 ÷ 111 - Program 14
x
x
x
–
–
–
112 ÷ 119 - Program 15
x
x
x
–
–
–
120 ÷ 127 - Program 16
x
x
x
–
–
–
128 ÷ 135 - Program 17
x
x
x
–
–
–
136 ÷ 143 - Program 18
x
x
x
–
–
–
144 ÷ 151 - OFF
–
–
–
x
x
x
152 ÷ 169 - Strobo 10%
x
–
x
x
x
x
170 ÷ 199 - Strobo 20%
x
–
x
x
x
x
200 ÷ 229 - Strobo 50%
x
–
x
x
x
x
230 ÷ 255 - RGBD
–
–
x

9
5.4. Reaction of the device to DMX signal interruption
This function is used both to protect the system against disappearance of DMX signal and to gain
control of LEDs without connecting an external driver. After it has been activated, in case of the
lack of DMX signal, the module will perform the selected function by itself. Reconnection of DMX
signal will automatically break the performed function, and the module will again send the
command with DMX line.
P01 - P18 - 18 ready programs are available. For each of them, the user can set the playback
speed Spd (value from 0.1 to 99.9 seconds) and the step change frequency in FAd
(value from 0, i.e. abrupt transition, to 100, i.e. totally smooth transition)
Sc - programming the scene value for red (rEd) channel, for green (Grn) channel, for
blue (bLu) channel, as well as the scene entrance time (SPd) (value from 0.1 to
99.9 seconds)
on - switching on of all outputs at 100% for which Spd is defined – switching time at
100% (0.1÷99.9 s)
oFF - complete switch-off of outputs
enter
enter
17x next
2x next
next
next
enter
next
previous
next
enter enter
next
previous
next
next
next
next
previous
next
previous
enter
next
enter
enter
enterenter
enter
enter

10
DESCRIPTION OF PROGRAMS
The following tables show the values for each output channel - R, G, B in programs from 1 up to
18 (P01 - P18). The value of 255 corresponds to the maximum lightness level on a given channel,
127 - 50% of power level, 0 - full channel blanking.
P01
step 1
R255
255
255
255
255
255
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
R
G
G
G
G
G
G
B
B
B
B
B
B
step 2
step 3
step 4
step 5
step 6
P02 P03 P04 P05 P06 P07 P08 P09 P10
0
255
0
255
0
255
0
0
0
0
0
255
255
255
0
255
255
255
0
255
0
0
255
255
0
0
255
255
0
255
255
0
0
255
0
255
0
0
255
0
255
255
0
255
0
255
255
0
0
255
255
255
0
255
255
0
255
0
0
0
0
255
0
0
255
0
0
255
255
255
0
0
0
0
255
255
255
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
G
G
G
G
B
B
B
B
step 1
step 2
step 3
step 4
P11 P12 P13 P14 P15 P16 P17 P18
0
0
0
255
255
127
127 127
127
127
127
127
127
127
127
127
127
0
0
255
0
0
255
0
0
255
0
255
0
255
0
0
255
0
0
255
0
0
255
0
255
0
0
255
0
255
0
255
255
255
0
0
0
0
0
255
255
255

5.5. MASTER / SLAVE function
enter
enter
next
3x next
enter
previous
next
enter
next
NOTE:
Generally, PX254 sends 3 channels – R, G, B. The minimum number of channels sent is 24, so
the three basic channels are multiplied six times. Where needed, they can be multiplied to give
512 channels (it is not recommended to use this setting due to the slow transmission).
5.6. White balance
Sometimes, there may be problems achieving white colour on the LEDs of RGB series. This may
be due to the use of diodes with different technical parameters. For this reason, the PX254
module is equipped with a white balance function (bAL). This option allows you to select the
proper colour temperature for the full control of all three outputs (white colour) in the range of
0 - 100%.
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The PX254 module has a built-in DMX512 receiver and can be controlled from any desktop or
controller running in this standard. Moreover, it is equipped with a programmable function of
response to no DMX signal (noS). With 18 built-in default programs, it is possible to obtain
interesting effects without an external controller. However, in larger installations, several PX254
drivers implementing the same program cannot provide a full reproduction synchronisation.
Therefore, PX254 has a MASTER feature. When it is activated, the module changes from a DMX
receiver into a transmitter of this signal and sends self-realized programs to the other modules.
The first driver on the DMX line should be assigned MASTER status. The other drivers should
operate in SLAVE mode.
With this solution, it is possible to make a precise synchronization even in very large installations.
Con - turning on or off the MASTER function
CHn - select the amount of DMX channels sent

bLr - setting the red colour value
bLG - setting the green colour value
bLb - setting the blue colour value
bCn - white balance on or oFF
5.7. Smooth
The driver has an option of smoothing the output signal. Smooth feature allows for smooth
changes in lightness and colour. When the transition between successive DMX values sent to the
lamp is turned on (e.g. corresponding to changes in lightness) the changes are smooth with no
visible twitches, which prevents the common light "vibrations" effect. Two consecutive DMX
values sent to the lamp are smoothed linearly between the DMX signal packets for the selected
P2P option or the time interval set in the menu.
enter
enter
5x next
enter
previous
enter
diS - the smoothing option is on
P2P - linear smoothing between the packages of DMX signal
tim - setting of smoothing in defined periods of time
(10 ms - 999 ms)
12
enter
enter
next
4x next
enter
enter
previous
previous
next
previous
next
enter
enter
enter
next

5.8. Light control frequency
The Frq function allows for setting the basic control frequency. This feature is extremely useful for
controlling lamps for the television industry. By applying the "flicker free" technology, it is possible
to avoid the unpleasant flickering effect which is caused by improper signal synchronization that
controls the LEDs.
enter
enter
2x next
next
5.9. Screen saving
The device is equipped with a feature that allows for turning off the backlight. The SCr option
activated turns off the display after a minute of inactivity (do not use the keys). The device
continues its operation without interfering with other parameters. Press any key to restore the
backlight.
on - screen saver activation
oFF - screen saver deactivation
enter
enter
3x next
next
The user can choose from the available frequency range
from 366 Hz up to 25 kHz which can be smoothly changed
using the „previous” or „next” buttons and selecting a
different value.
Frequency values above 1.51 kHz can avoid flickering in the
camera.
5.10. Display function
As the driver should be installed (As far as possible) in a small distance from the controlled LEDs,
the lack of space may force the necessity of mounting the device upside-down. In such case the
displayed messages become illegible, that does not have the influence on device operation, but
makes the programming much more difficult.
That is why the PX254 driver has a display flip feature available. It turns the screen 180°. The
keys order is reversed as well.
To activate this both middle buttons (PREVIOUS and NEXT) of the driver have to be pressed in
the same time for about 3s. To deactivate function the procedure is the same.
The figure on the next page shows how flip function works.
13

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5.11. Default settings and memory error
If you have any difficulty accessing the device menu, e.g. it is not possible to enter a particular
menu level or it is necessary to restore the device to its default settings, follow the instructions
below.
In the first case, if there is no access to the menu level or it is incorrectly displayed, this may
indicate an error of saving to the device memory.
If the procedure has been performed and the device still does not operate properly, it must be sent
to the manufacturer.
To restore the device to its default settings, press and hold the previous key while switching on the
device. One of the messages that will be displayed will say dFl, which means successful restoring
to default settings (the previous key has to be held down while powering on the device, until
the dFl message is displayed).
If this message is accepted by pressing „enter”, the default settings will be restored. The user can
also exit this menu level without restoring the default settings. In order to do this, press the „esc”
key.
Please note that all set parameters of the PX254 device after restoring the default settings will be
changed to those shown below:
Ÿ DMX address - 1,
Ÿ driver operating mode - RGB (3b - 3-byte),
Ÿ master mode - off,
Ÿ number of sent DMX channels - 128,
Ÿ white balance - off
Ÿ no signal operating mode - Program 1
Ÿ smoothing function (smooth) - off
ENTER
POWER ON
PREVIOUS PRESSED
ESCAPE
standard
position
upside-down
position
buttons are placed in the
same way as in normal
position; display is flipped
Err message - memory error
The device is equipped with a built-in memory work control function.
If there are problems with the memory operation on the PX254 display, the Err message appears
- memory error.
In this situation, select the “enter” key. The device will reload the default configuration and upload
it to the memory. If after this operation, the Err message remains on the screen, the memory is
permanently damaged and the unit must be sent to the service point.
OUTPUT:
INPUT: 7-24VDC
15A max
OUTPUT:
INPUT:
OUTPUT:
INPUT: 7-24VDC
15A max
OUTPUT:
INPUT:

5.12. RDM description of available parameters
15
The PX254 supports the DMX-RDM protocol. DMX protocol allows only of a one-way data
transmission, while its extension the RDM protocol can transmit information in two directions.
This makes possible to simultaneously send and receive information, and hence the possibility of
monitoring activities of the compatible devices. Thanks to RDM some available settings of
compatible devices may be programmed using this protocol.
Below is a list of RDM parameters supported by the PX254:
Parameter name
PiD
Description
SUPPORTED_PARAMETERS
0x0050
all supported parameters
PARAMETER_DESCRIPTION
0x0051
description of additional parameters
DEVICE_INFO
0x0060
information concerning the device
SOFTWARE_VERSION_LABEL
0x00C0
firmware version of the device
DMX_START_ADDRESS *
0x00F0
DMX starting address of the device;
minimum value: 1, maximum value: 512.
According to the RDM standard, for device
whose footprint is 0, the value of this
parameter may be 65535 and then it is not
possible to change the initial address settings
for the entire device, but only for sub-devices.
IDENTIFY_DEVICE *
0x1000
device identification;
Two states are possible: identification is off
(0x00 value) and identification is on (0x01
value).
STATUS_MESSAGES
0x0030
information about device status
DEVICE_MODEL_
DESCRIPTION
0x0080
device description, e.g. name
MANUFACTURER_LABEL
0x0081
manufacturer description, e.g. name
DEVICE_LABEL *
0x0082
additional device description;
It is possible to enter an additional device
description using up to 32 ASCII characters.
FACTORY_DEFAULTS
0x0090
device default settings
DMX_PERSONALITY
0x00E0
DMX operational mode
DMX_PERSONALITY_
DESCRIPTION
0x00E1
description of individual operational modes
DEVICE_HOURS
0x0400
operating time counted in hours

16
Parametr name
PiD
Description
BALANCE_RED *
0x8011
value of control level of red chanel balance;
Minimum value is 0 and maximum is 100 (the
value equals to pecentage of control level).
For the maximum value (100) the LEDs work
with maximum brightness. Default value is
100.
BALANCE_GREEN *
0x8012
value of control level of green chanel balance;
Minimum value is 0 and maximum is 100 (the
value equals to pecentage of control level).
For the maximum value (100) the LEDs work
with maximum brightness. Default value is
100.
BALANCE_BLUE *
0x8013
value of control level of blue chanel balance;
Minimum value is 0 and maximum is 100 (the
value equals to pecentage of control level).
For the maximum value (100) the LEDs work
with maximum brightness. Default value is
100.
SMOOTH_DIS_0/P2P_
1/TIM_2 *
0x801A
the choice of options relating to the Smooth
function;
At 0 value Smooth is turned off, for a value of
1 Smooth mode is set to a Packet to Packet
(P2P) and for the value of 2 Smooth is in time
mode (tim). The default value is 0 - Smooth
off.
SMOOTH_TIME *
0x801B
smooth time for tim function chosen in
subsection above;
Unit in [ms]. Minimal value of this parameter is
10 and maximal 999 [ms]. Default value is
200.

Parametr name
PiD
Description
NO_SIG_P1-
18|SC_19|ON_20|OFF_21
0x801C
choice of work mode for No DMX signal;
Minimal Value is 1, maximal 21. For values 1-
18 menu allows to chose program from 1 to 18
which is played during no DMX signal
detection. For the 19 value a scene saved in
memory is set and for the 20 value all outputs
are set to ON with maximum value. The value
21 sets to OFF all outputs during time with no
DMX signal received. Default value is 21.
SCENE_RED *
0x801D
settings of red channel value for scene saved;
Minimal value is 0, maximal 255 (maximal
brightness). By defualt value set to 255.
SCENE_GREEN *
0x801E
settings of green channel value for scene
saved;
Minimal value is 0, maximal 255 (maximal
brightness). By defualt value set to 255.
SCENE_BLUE *
0x801F
settings of blue channel value for scene
saved;
Minimal value is 0, maximal 255 (maximal
brightness). By defualt value set to 255.
SCENE_WHITE *
0x8020
settings of white channel value for scene
saved;
Minimal value is 0, maximal 255 (maximal
brightness). By defualt value set to 255.
SCREENSAVER_ON/OFF *
0x8024
settings of screensaver;
With the 0 value display blanking is not active,
the 1 value means screensaver active. Default
value is 0.
PROGRAM_SPEED *
0x8025
programs playback speed settings (playing
next steps of program);
Minimum value is 1 and maximal 999
(maximum speed). By default it is set to 10.
Value 1 represents 0,1s, and 999 - 99,9s.
PROGRAM_FADE *
0x8026
settings of smooth transition between
following steps of a program;
The minimum value is 0 (step transition) a
maximum of 100 (transition completely
smooth). The default value is 100.
17

Parametr name
PiD
Description
BALANCE ON/OFF *
0x8027
to activate or deactivate the balance of output
channels;
A value of 0 is a balance off, a value of 1
active balance. The default value is set to 0.
PWM_FREQENCY *
0x8028
LEDs refresh frequency;
The minimum value is 366 and the maximum
is 25000. The unit is [Hz] and the
default value is 366.
SERIAL_NUMBER
0x8030
device serial number
DISPLAY_FLIP *
0x8031
inverting the meter display 180 degrees;
The minimum value is 0, and the maximum is
1. The default value is 0.
18

19
enterenter
enter
enter enter
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enterenter
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enter
enter
enter
next
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enter
next
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5.13. Programming scheme
next

20
6. CONNECTION SCHEME
PX254 features passive DMX and thus a maximum of 32 PX254 devices can be connected to one
DMX line without using a DMX repeater. At the end of the line, a DMX line terminator (120 Ohm
resistor) must be connected (to the last device).
Connections must be made using cables of suitable thickness.
Properly made connections reduce the risk of damaging and improve its reliability. Apply only
shielded cables to connect the DMX signal.
power supply
7-24V DC
a) sample connection of a RGB LED stripe
Please note that the driver is
common anode type device. It is possible to
connect lamps
with 5-wires cable with a common + only.
max. 32 devices in
DMX line
Terminator
(Rezystor 120 Ohm connected
between DMX+ i DMX-)
7-24VDC
15A max
OUTPUT:
INPUT:
controller DMX
1 2 3 4 5 6
PX015
1 2 3 4 5 6 Chaser Scene
Club 6p
90
% 100
80
70
60
50
40
30
20
10
0
100 %
90
80
70
60
50
40
30
20
10
0
Master
Music Speed
masa
DMX-
DMX+
7-24VDC
15A max
OUTPUT:
INPUT:
V-
V+ L N
RRR
B
G
R
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LED strip RGB
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