PXM DMX/4-20mA interface User manual

MANUAL
DMX/4-20mA
interface
PX292
R

CONTENTS
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4
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5
6
7
8
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11
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12
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1. General information.............................................................................................
2. Safety considerations..........................................................................................
3. Description of connectors and controls...............................................................
4. Programming the device.....................................................................................
4.1. Navigating the menu..........................................................................
4.2. Programming group parameters........................................................
4.3. Programming individual parameters..................................................
4.4. Response to DMX signal loss............................................................
4.5. Smoothing feature..............................................................................
4.6. Screensaver.......................................................................................
4.7. Default settings, memory error...........................................................
5. Programming.......................................................................................................
6. Connection schematic.........................................................................................
6.1. DMX signal connection......................................................................
7. Installation of the device......................................................................................
8. Dimensions..........................................................................................................
9. Technical specifications.......................................................................................
Declaration of conformity.........................................................................................
Manufacturer reserves the right to make modifications in order to improve device operation.
PXM Marek Żupnik spółka komandytowa
Podłęże 654
32-003 Podłęże
tel.: [phone]
fax: [phone]
E-mail: [email protected]
Internet: www.pxm.pl
Rev.1.1.

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PX292 is used for DMX512 signal processing to analog 4 - 20 mA control. The device is
manufactured in the casing for installation in electric panels on DIN T35.
In addition to simple DMX signal decoding PX292 allows you to programme unit reaction to loss of
DMX signal.
Individually programmable parameters allow you to define independent for each channel, DMX
address in the range 1-512. For example, multiple channels can be arbitrarily assigned to a single
address.
1. GENERAL DESCRIPTION
2. SAFETY CONDITIONS
PX292 is powered with safe voltage 12-24 V; however, during its installation and use the following
rules must be strictly observed:
1. Installation of equipment, in particular, power connection should be made by a licensed
person, in accordance with this manual.
2. The device may only be connected to 12-24 V DC current (stabilized voltage) with current-
carrying capacity compatible with technical data.
3. All the conductors should be protected against mechanical and thermal damage.
4. In the event of any conductor damaging, it should be replaced with the one of the same
technical specification.
5. Connection of DMX signal should be made with shielded conductor.
6. All repairs and connections of outputs or DMX signal can only be made with power off.
7. PX292 should be strictly protected against contact with water and other liquids.
8. All sudden shocks - particularly dropping - should be avoided.
9. The device cannot be turned on in places with humidity exceeding 90%.
10. The device cannot be used in places with temperature lower than +2°C or higher than +40°C.
11. For cleaning use only a damp cloth.

3. DESCRIPTION OF CONNECTORS AND CONTROLS
Pin no.
1
2
13
14
6
5
4
3
15
16
17
18
7
8
9
10
11
12
19
20
21
22
23
24
Connection
GND (-)
GND (-)
GND (-)
GND (-)
OUT 1 (+)
OUT 2 (+)
OUT 3 (+)
OUT 4 (+)
OUT 5 (+)
OUT 6 (+)
OUT 7 (+)
OUT 8 (+)
DC + power type
DC + power type
DC + power type
DC - power type
DC - power type
DC - power type
DMX IN +
DMX IN -
DMX IN GND
DMX OUT +
DMX OUT -
DMX OUT GND
24V DC
DMX Demux 8
PX292
4-20 mA
escape
previous
next enter
4. PROGRAMMING THE DEVICE
- allows to exit from the currently
programmed parameter without saving
any changes or to go in the menu to a
level above
- menu scrolls back or decreases the set
value
- menu scrolls forward or increases the set
value
- enters to program device and approves
the set value
escape
previous
next
enter
After you switch on the device, its display shows the program version. During its normal
operation, the demultiplexer shows the first channel address on the display. To access the main
menu press “enter”, and the display will show the following: ALL. Press “previous” or “next” to
select the appropriate menu to program (ALL, Ind, noS, Sth, Scr) and press “enter” to confirm
your selection.
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4.1. Navigating the menu

4.2. Programming group parameters
Programming in this menu affects all the channels.
After you select ALL in the main menu, press “enter” to confirm your selection and then, using
the “next” or “previous” buttons select the parameters that you want to set:
Adr - DMX address of the device
Cur - channel dimming characteristic
If you program an address or a characteristic, the previous individual settings for each channel
will be cancelled.
The PX292 menu allows the user to set a DMX address in the 1 - 505 range.
ENTER
NEXT
ENTER
ENTER
NEXT
ENTER
NEXT
PREV
ENTER
ENTER
NEXT
NEXT
NEXT
ENTER
ENTER
ENTER
You can also set an output characteristic for all the channels at the same time:
Cur - channel dimming characteristic
LIn - 4...20 V linear characteristic
S_P. - switching characteristic (switch on / off)
uSr - characteristic defined by the user, linear characteristic, in the
range of Min ( ), MAX ( ) V. Minimum and maximum
values can be set in the range of 4 - 20 V. You can set a
minimum value that is higher than a maximum value; in such a
case the output value will be inversely proportional to the input
value.
5

The PX292 device features an individual settings option. This allows you to assign any DMX
address to each of the eight output channels. In order to do this, you need to select
the Adr function. You can choose addresses from the value range of 1 - 512. You can also set an
output characteristic for individual channels:
4.3. Programming individual parameters
20
4
[mA]
DMX
0 255
NEXT
ENTER
NEXT
NEXT
NEXT
NEXT
NEXT
NEXT
NEXT
ENTER
NEXT
ENTER
NEXT
PREV
ENTER
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Cur - channel dimming characteristic
LIn - 4...20 V linear characteristic
S_P. - switching characteristic (switch on / off)
uSr - characteristic defined by the user, linear characteristic, in the
range of Min ( ), MAX ( ) V. Minimum and maximum
values can be set in the range of 4 - 20 V. You can set a
minimum value that is higher than a maximum value; in such a
case the output value will be inversely proportional to the input
value.

ENTER
ENTER ENTER ENTER ENTER
ENTER
ENTER
ENTER
ENTER
NEXT
ENTER
NEXT
NEXT
NEXT
NEXT
NEXT
NEXT
NEXT
NEXT
NEXTNEXT
NEXT
NEXT
NEXT
NEXT
NEXT
NEXT
NEXT
NEXT NEXT
NEXT
NEXT
NEXT
NEXT
NEXT
4.4. Response to DMX signal loss
You can use this function to protect the system against DMX signal loss and to obtain a specific
status at the outputs. When the function is enabled, and DMX signal loss occurs, the module will
independently execute the function selected. If the DMX signal is restored, the function being
executed will be interrupted and the module will again be controlled by the DMX signal.
Pr1 - Pr2 - you can program 2 programs, each with ten steps (F01 - F10). For each of the
programs you can set playback speed SPd (values in the range of 0.1 – 99.9
seconds) as well as step fading smoothness in the FAd program (values in the
range of 0, i.e. abrupt step-like change, to 100, i.e. completely smooth transition). If
the step being edited is to be the last step in the program, you need to access the
End function. If you select on, that will be the last step in the program and will be
followed by step one.
on - switching on all the outputs at 100% for which SPd is specified – switch-on time at
100% (0.1 – 99.9 s)
oFF - complete switching off of all the outputs
Hld - holding the last DMX value at the output if the DMX signal is lost
Sc1 - Sc4 - programming DMX values for four scenes. In respect of each scene you can set
values in eight channels (CH1 – CH8)
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ENTER
NEXT
ENTER
3x NEXT
NEXT
NEXT
The enabled smoothing function can slightly slow down the
device response to the change of DMX signal, so it is possible
to switch off this option. In order to switch off smoothing, select
diS parameter and confirm the selection with "enter".
The selection of P2P function allows linear transition between
successive DMX values.
Time smoothing - time allows you to set the time of linear transitions between successive
DMX values. The minimum value is 10 [ms] and the maximum is 999 [ms]. This can be smoothly
changed by selecting the expected value using "previous" and "next" buttons.
The device also has the smoothing option. Smoothing allows for smooth color changes. When
this option is enabled, switching between successive DMX values sent to channels is smooth,
which prevents abrupt changes in voltage.
4.5. Smoothing feature
4.6. Screensaver
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
NEXT
ENTER
4x NEXT
ENTER
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4.7. Default settings, 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. Then, before the PX292 service is shipped to the
service, you must perform a factory reset. 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 PX292 device after restoring the default settings will be
changed to those shown below:
Ÿ DMX address - 1
Ÿ no signal operating mode - switched off (oFF)
Ÿ smoothing - disabled (diS)
Ÿ screensaver - switched off (oFF)
POWER ON
PREVIOUS PRESSED
The device is equipped with a built-in memory work control function.
If there are problems with the memory operation on the PX292 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.
If an ER1 or ER2 error occurs, the device will reset itself after 3 seconds. Such a reset indicates
that there is a hardware problem with the device. If the problem occurs again, please contact our
service desk.
Err message - memory error
ENTER
ESCAPE
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5. PROGRAMMING
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ENTER
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ENTER ENTER ENTER
ENTER
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ENTERENTER
ENTER