13
246.805.201
Date: 2017-09-26
Data link
A DMX 512 data link is required in order to control the winch via DMX. The Winch 50
has 5-pin XLR connectors for DMX data input and output. The pin-out on all connectors
is pin 1 = shield, pin 2 = Data (-), and pin 3 = Data (+). Pins 4 and 5 in the 5-pin XLR
connectors are not used in the Winch 50 but are available for possible additional data
signals as required by the DMX512-A standard. Standard pin-out is pin 1 = shield, pin 2
= data (-) and pin 3 = data (+).
Pin
DMX IN
DMX OUT
1
GND
GND
2
Data -
Data -
3
Data +
Data +
4
NC
NC
5
NC
NC
The Winch 50 is subject to the common limit of 32 devices per daisy-chained link. Note
that if independent control of a winch is required, it must have its own DMX channels.
Winches that are required to behave identically can share the same DMX channels. To
add more winches or groups of winches when the above limit is reached, add a DMX
universe and another daisy-chained link.
Tips for reliable data transmission
−
Use shielded twisted-pair cable designed for RS-485 devices: standard microphone
cable cannot transmit control data reliably over long runs. 24 AWG cable is suitable
for runs up to 100 meters (328 ft.).
−
Never use both a winch’s outputs to split a DMX link. To split the link into branches,
use an opto-isolated RS-485 splitter/amplifier.
−
Terminate the link by installing a termination plug in the output socket of the last
winch. The termination plug, which is a male XLR plug with a 120 Ohm, 0.25 Watt
resistor soldered between pins 2 and 3, “soaks up” the control signal so it does not
reflect and cause interference. If a splitter is used, terminate each branch of the
link.
Connecting the data link
To connect the Winch 50 to data:
1.
Connect the DMX data output from the DMX controller to the Winch 50’s male
5-pin XLR DMX input connector (DMX 512 IN).
2.
Connect the DMX output of the winch to the DMX input of the next winch and
continue connecting winches output to input (DMX 512 OUT).
3.
Terminate the last fixture on the link with a 120 Ohm resistor.
The DMX lamp is the green led, above the display.
−
Glows constant, when the DMX connection is correct.
−
Flash if the DMX signal is missing or wrongly connected.
Summary of Contents for Winch 50 Double
Page 12: ...12 246 805 201 Date 2017 09 26...
