Tips For Reliable Data Transmission; Connecting The Data Link - Wahlberg 255.700 User Manual

Ac motor controller
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To install a standard CEE 16A input connector on a power cable for 255.701(3000 W) refer to
manufacturer's instructions provided with the connector or consult an authorized electrician.
Power
L1: Line 1
L2: Line 2
L3: Line 3
N: Neutral
: Ground/Earth
Data link
A DMX 512 data link is required in order to control the product via DMX. The unit 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 or connected
from DMX in to out in this product.
DMX input / output
1: GND
2: Data 1-
3: Data 1+
4: Data 2-
5: Data 2+
The product is subject to the common limit of 32 devices per daisy-chained link. Note that if
independent control of a product is required, it must have its own DMX channels. Motors that
are required to behave identically can share the same DMX channels. To add more motors or
groups of products 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 product. 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 unit to data:
1. Connect the DMX data output from the DMX controller to the products male 5-pin XLR
DMX input connector (DMX IN).
2. Connect the (DMX Out) of the product to the DMX input of the next daisy chained
product.
3. Terminate the last product on the link with a 120 Ohm resistor.
255.805.001
12
Date: 2021-03-12

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