Wahlberg 241, User Manual

Page: 14 / 40

241.805.012 14 Date: 2017-10-24
Data link
A DMX 512 data link is required in order to control the winch via DMX. The Winch 10
has 5-pin XLR connectors for DMX data input and output. The pin-out on all connectors
is pin 1 = shield, pin 2 = (-), and pin 3 = (+). Pins 4 and 5 in the 5-pin XLR connectors
are not used in the Winch 10 but are available for possible additional data signals as
required by the DMX512-A standard.
The Winch 10 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. AWG24 cable is suitable
for runs up to 100 meters (328 ft.).
Never split a DMX line without using 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 DMX
To connect the Winch 10 to data:
1. Connect the DMX data output from the DMX controller to the Winch 10’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 winch on the link with a 120 Ohm resistor.
The DMX lamp is the green led, next to the DMX-selectors.
− Glows constantly: DMX connection is correct.
− Flashes: DMX signal is missing or wrongly connected.