Ltech LT-905 User manual

www.ltech-led.com
LT-905
8 bit / 16 bit
2 kinds of DMX interfaces
OTP/OCP/SCP protection
Photoelectric
Isolation
006
CHANNELS

1
Product Introduction
www.ltech-led.com
7. With power-on state management and fast self-testing function.
9. 16bit (65536 levels) / 8bit (256 levels) grey level for option.
8. High/low frequency PWM for option.
4. With RDM remote management protocol, the operations can be completed via the
RDM master console, such as parameters browsing & setting, DMX address setting,
equipment recognition, etc.
2. Easy operation with digital display and touch buttons.
1. Designed with 5 channels output, and Max. 5A current per channel, up to 600W output
power.
5. With firmware upgrade function.
6.
when fault.
With short circuit / over-heat / over current protection, as well as warning function
3. 3-pin XLR, RJ45 DMX interface with photoelectric isolation, improve signal
transmission efficiency and anti-interference ability.
Short circuit
Protection
RDM Over current
Protection
RJ45 Photoelectric
isolation
Over-heat
protection
E500585
warranty
5 years
3-pin XLR

Technical Specs
LT-905
DMX512/RDM
3-pin XLR, RJ45
~
×
× 5CH Max. 600W
12 24Vdc
5A 5CH Max. 25A
(0~60W...120W)
8bit (256 levels) / 16bit (65536 levels)
2
Photoelectric Isolation:
Protection:
Working Temp.:
:
:
:
Dimensions
Package Size
Weight (G.W.)
110
86
122
110
www.ltech-led.com
Model
Input Signal
Input Voltage
Current Load
:
:
DMX Interface:
:
:
:
Output Power:
Grey Level
Unit: mm
Yes
Short circuit / Over-heat / Over current protection,
recover automatically.
°C °C -30 ~65
L122×W110×H37mm
L127×W123×H41mm
550g
37

www.ltech-led.com
3
Main Component Description
RJ45
3-pin XLR
DMX/RDM
input & output
DMX/RDM
input & output
Power
indicator
Signal
indicator
12-24Vdc
Power input
Green terminals
LED lamps connection
Digital display
Digital
display
Hig Smooth
Low Std
PWM Hz DIM
Digital display will enter the locked
mode without operating after 15S.
Dip
switch
Dip switch
16
Bit
8
M
<
<
Long press “M” key to unlock.
Short press “M” key to switch numbers.
Press “ ””v” key to adjust value.
^
006
006
Screen
30S off
Enable

DMX
RDM
DMX
RDM
DMX
RDM
DMX
RDM
LT-905 LT-905
Wiring Diagram
1 Connecting LED lights:
Signal Signal Signal Signal
LED
driver LED
driver LED driver
12-24Vdc 12-24Vdc
www.ltech-led.com
4
RGBWY LED RGBWY LED
RGBWY LED
V+
V+
1
2
3
4
5

DMX
console
2. DMX console onnectionc :
DMX signal DMX signal
12-24Vdc 12-24Vdc 12-24Vdc
Resistor
terminal
An amplifier is needed if more than 32 decoders are connected ,
signal amplification should not be more than 5 times continuously.
or use overlong signal line
If the recoil effect occurs because of longer signal line or bad line quality, please try to
connect 0.25W 90-120Ω terminal resistor at the end of each line.
LT-905 is equipped with 2 types DMX
terminals for users’ selection. The following
diagram takes 3-pin XLR as an example,
the same connecting method for RJ45.
1
3
2
PUSH
1
3
2
PUSH
GND
DATA+
DATA-
LT-9 05 LT-905 LT-9 05
www.ltech-led.com
5
DMX signal
*
*

These 2 terminals can be connected in a mixed way.
Rj45 connected in parallel
3-pin XLR connected in parallel
Terminal
resistor
Terminal
resistor
3. The connection diagram of 2 kinds of DMX/RDM terminals:
LT-9 05
LT-9 05
LT-9 05
LT-9 05
LT-9 05
LT-9 05
www.ltech-led.com
6
*Installation Attention : Please reserve enough ventilation distance between decoders (>20mm),
Be sure not to block the vent, or it will affect lifetime of the decoder for . poor heat dissipation
Installation distance > 20mm
Vent

www.ltech-led.com
7
WIFI-RDM01
LT-9 05LT-9 05LT-9 05 LT-905
…
…
LEDLEDLED LED
Work with RDM Editor
LT-905 can work with LTECH RDM editor (Model: WiFi-RDM01) to realize changing the parameters
by long-range setting, wiring diagram as below:
5-24Vdc power input
Power bank
available
supply is
LED driver LED driver LED driver LED driver

www.ltech-led.com
8
RDM Editor App Interface Instructions
ac
b
d
a: click”Add”, edite the address in corresponding box.
b: Click”ID”, get more product details.
c: Click” ”, enter edited interface
d: Click”No.”, issue the recognizing command.
Supporting WiFi-RDM01 upgrade
and DMX driver upgrade.
WiFi-RDM01
upgrade
DMX device
upgrade
Download the App, set LT-905 parameters (dimming range, brightness, boot fade time etc.) after
well connecting the RDM editor, More details, please check the manual of WiFi-RDM01.
Well install products first, then work with WiFi -RDM01 to realize parameters setting and
firmware upgrade by App.
Update time: 2020.08.03_A2
This manual is subject to changes without further notice.
Product functions depends on the goods.
Please feel free to contact our official distributors if you have any question.

www.ltech.cn
LT-905
8 bit / 16 bit
2种DMX接口
短路、过温、过流保护
CHANNELS 光电隔离
006

产品介绍:
1、本产品共有5个通道输出，每通道最大5A电流，总功率可高达600W。
2、使用数码管和轻触按键设置地址，操作简单快捷；
3、
抗干扰能力。
提供3针XLR、RJ45两种具有光电信号隔离功能的DMX接口，提高信号传输效率和
4、
改、设备识别等操作。
具有RDM远程管理协议，通过RDM主控可对其进行参数浏览与设置、DMX地址修
6、具有短路、过温、过流自动保护与恢复功能, 并有故障警示提示功能。
7、具有上电状态管理及快速自测功能。
9、65536 25616bit( 级)/8bit( 级)灰度级可选。
8、PWM频率可选高频/低频。
1
www.ltech.cn
RJ45 RDM 短路保护 过流保护
3针XLR
5、具有固件升级功能。
过温保护
质保5年
E500585
光电隔离

性能参数:
LT-905
DMX512/RDM
12- 24Vdc
5A×5路 Max. 25A
(0~60W...120W)×5路
Max. 600W
8bit(256级)/16bit(65536级)可选
3针XLR, RJ45
有
-30°C~65°C
L122×W110×H37mm
L127×W123×H41mm
550g
短路、过温、过流保护
可自动恢复
产品型号 :
输入信号 :
DMX接口:
灰度等级:
输入电压 :
负载电流 :
输出功率 :
光电隔离：
保护：
工作温度 :
产品尺寸 :
包装尺寸 :
重量(毛重 ):
2
110
86 37
产品尺寸:
122
110
单位: mm
www.ltech.cn

www.ltech.cn
3
DMX/RDM
输入及输出
DMX/RDM
输入及输出
RJ45
3针XLR
通信
指示灯
电源
指示灯
部件图:
绿色端子
连接LED灯
12-24V dc
电源输入
地址
数码管
地址数码管
拨码
开关
长按"M"键解锁
短按"M"键切换至另一数字
” ”” v”
按 键调整数值
^
M
<
<
拨码开关
灰度级
PWM Hz
16
8
显示
调光
开
30秒后关
高平滑
标准
低
数码管无人使用15秒将进入
锁定状态
006
006

www.ltech.cn
4
连接示意图:
1 连接LED灯
RGBWY LED灯RGBWY LED灯
DMX
RDM
DMX
RDM
DMX
RDM
DMX
RDM
信号 信号信号 信号
LED电源 LED电源 LED电源
LT-905 LT-905
12-24Vdc 12-24Vdc
V+
V+
1
2
3
4
5
RGBWY LED灯

www.ltech.cn
2. DMX系统连接
当信号线较长或者线材质量等原因造成信号反冲效应影响使用, 可以尝试在每路信号线末端
连接0.25W 90-120Ω终端电阻解决。
终端电阻
本DMX解码器提供两种DMX端子供用户选择,
本连接图以连接3针XLR端子为例, 也可根据实际
情况选择RJ45。
DMX信号 DMX信号
1
3
2
PUSH
1
3
2
PUSH
DMX主控
当DMX解码器过多(超过32台)或信号线过长，需加信号放大器，信号放大不能连续超过5次。
GND
DATA+
DATA-
12-24Vdc
12-24Vdc 12-24Vdc
LT-9 05 LT-905 LT-905
5
DMX信号

www.ltech.cn
3两种DMX端口的连接示意图.
以上两种方式可以任意混合连接
RJ45并联连接
3针XLR并联连接
终端电阻
终端电阻
LT-9 05
LT-9 05
LT-9 05
LT-9 05
LT-9 05
LT-9 05
6
安装距离不少于20mm
通风孔
安装注意事项： 请在解码器与解码器之间预留通风距离（最少20mm)，切勿堵塞通风孔，
否则会因设备散热不畅影响使用寿命。

www.ltech.cn
7
与RDM编辑器配合使用:
LT-905可以与我司RDM编辑器（型号WiFi-RDM01）配合使用，以实现手机远程设置更改
LT-905参数的功能，连接图如下：
5-24Vdc
电源输入
LT-9 05LT-9 05LT-9 05
LED电源LED电源LED电源
LT-9 05
…
…
LEDLEDLED LED
LED电源
WiFi-RDM01

www.ltech.cn
8更新日期: 2020.07.30_A2
手机下载APP，与RDM编辑器连接成功后，即可通过APP设置LT-905的调光范围、开机
亮度、开机渐变时间等参数，具体请参看WiFi-RDM01的使用说明书。
RDM编程器APP界面介绍:
配套使用WiFi-RDM01后，即可实现先安装再用APP设置参数及进行固件升级，随心更改，
免高空作业。
本说明书的内容如有变更，恕不另行通知。
若内容与您使用的功能有所不同，则以实物为准。
如有疑问，请与供应商联系。
ac
b
d
在APP进行固件升级
WiFi-RDM01
升级
DMX驱动
升级
a : 点击”地址“对应方框可编辑地址；
b : 点击“标识符”出现产品详细信息 ;
c : 点击编程按钮“ “则进入编辑界面 ;
d : 点击序号发出识别命令。