Wahlberg 239.701 User manual

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TELEPHONE: [phone] HØJBJERG
EMAIL: [email protected] DENMARK
Medium Roll Down Slow
Item No. 239.701
User Manual

239.805.001 2Date: 2020-03-11
Safety Information
WARNING! Read this manual before installing, powering or servicing the product; follow the
safety precautions listed below and observe all warnings in this manual and printed on the
product. If you have questions about how to operate the product, please contact you Wahlberg
Motion Design supplier or Wahlberg Motion Design.
The following symbols identify important safety information on the product and in this manual.
DANGER!
Safety hazard
WARNING!
Moving parts
can crush and
cut
DANGER!
Risk of
electric shock
WARNING!
Risk of fire
WARNING!
Hot surface
WARNING!
See manual
GENERAL PRECAUTIONS
−This product is for professional use and presents risks for sever injury or death.
−Always warm-up electronic equipment to room temperature before applying power.
−Isolate the product from power immediately if defective or showing signs of overload. Do
not reapply power until repairs have been completed.
−Do not modify the product in any way not described in this manual.
−Refer any service operation not described in this manual to a qualified technician.
−Install only genuine Wahlberg parts.
PROTECTION FROM INJURY
−Fasten the product securely to a fixed surface, rig, or structure as described in this manual.
−Ensure that any supporting hardware can hold at least 10 times the weight of all the
devices they support.
−Block access below the work area whenever installing or servicing the product.
−Do not use the product to lift people or animals and do not exceed the load limits.
−Do not use the product over the head of people.
−When the product is installed and may not be used for some time, inspections and
maintenance according to this manual shall always be followed.
PROTECTION FROM ELECTRIC SHOCK
−Do not expose the product to rain or moisture.
−Use an AC power source with overload and ground(earth)-fault protection.
−Disconnect from AC power before servicing.
PROTECTION FROM BURNS AND FIRE
−Do not operate the product if the ambient temperature (Ta) exceeds 40° C (104° F).
−The exterior of the product becomes warm during use. Avoid contact by persons and
materials. Allow the product to cool for at least 10 minutes before handling.
DISPOSING OF THIS PRODUCT
Wahlberg Motion Design products are supplied in compliance with Directive 2012/19/EU of the
European Parliament and of the Council of the European Union on WEEE (Waste Electrical and
Electronic Equipment), including amendments where applicable. Help preserve the environment!
Ensure that this product is recycled at the end of its life. Your supplier can give details of local
arrangements for the disposal.

239.805.001 3Date: 2020-03-11
Index
SAFETY INFORMATION 2
INDEX 3
TECHNICAL SPECIFICATIONS 4
DRAWING 5
INTRODUCTION 6
PACKAGE CONTENT ...................................................................................................................................... 6
DESCRIPTION............................................................................................................................................... 6
AREA OF USE............................................................................................................................................... 7
USING FOR THE FIRST TIME ............................................................................................................................ 7
TRANSPORT ................................................................................................................................................ 7
PHYSICAL INSTALLATION 8
FASTENING THE PRODUCT TO A FLAT SURFACE................................................................................................... 8
MOUNTING THE PRODUCT ON A TRUSS (TUBE/PIPE) .......................................................................................... 8
AC POWER 9
VOLTAGE.................................................................................................................................................... 9
POWER CABLES AND POWER PLUG .................................................................................................................. 9
INSTALLING A POWER INPUT CONNECTOR ON A POWER CABLE ............................................................................. 9
DATA LINK 10
TIPS FOR RELIABLE DATA TRANSMISSION ........................................................................................................ 10
CONNECTING THE DATA LINK........................................................................................................................ 10
SETUP 11
MOUNTING THE LOAD ................................................................................................................................ 11
MODE SETTING.......................................................................................................................................... 12
DMX ADDRESS SETTING AND CHANNEL OVERVIEW........................................................................................ 12
SETTING THE TOP AND END POSITIONS........................................................................................................... 14
POSITIONING............................................................................................................................................. 15
MANUAL OPERATION USING THE CONTROL BOX ............................................................................................. 16
CONTROL BOX AND HARD-LIMIT SWITCH PORT................................................................................................ 16
DUTY-CYCLE.............................................................................................................................................. 17
SYNCHRONIZED MOVEMENTS OF MULTIPLE MEDIUM ROLL DOWNS ................................................................... 17
SERVICE AND MAINTENANCE 18
SPARE PARTS............................................................................................................................................. 18
ON-SITE SERVICE........................................................................................................................................ 18
MAINTENANCE PLAN .................................................................................................................................. 18
CHECKLIST ................................................................................................................................................ 19
APPENDIX 1 - DIMENSIONS 20
APPENDIX 2 –POWER CONNECTOR 21
APPENDIX 3 - BLOCK DIAGRAM 23
MEDIUM ROLL DOWN –CHEAT SHEET 24

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Technical specifications
Model: Medium Roll Down Slow
Item no.: 239.701
Dimensions: (L×W×H)
Motor Unit (without clamps): 95 x 170 x 342 mm (3.7 x 6.7 x 13.5 in)
Tube: ø120 x 1000-6000 mm (ø4.7 x 39.4-236.2 in)
Power supply: 100-240 V AC 50-60 Hz.
Power consumption: 300 W (3,0-1,25A)
Power inlet: Neutrik powerCON TRUE1 NAC3PX (F/M)
DMX control signal: DMX 512 1990 + DMX512A / 6 channels used.
DMX connection: 5 pole XLR (F/M)
Lifting capacity (Load): 20 kg. (44.1 lb)
Lifting speed: 1,7-38 cm/sec. (0.6-15 in/sec.)
Noise emission: ≈45 dB at 1m (3.3 ft)
Ambient temperature: 5-40°C (41-104°F)
Weight (1 m tube): 11.5 kg (25.4 lb)
Motor Unit: 9.5 kg (20.9 lb)
Tube: 2,6 kg/m (1.77 lb/ft)
Mounting clamp: 2x Slim eye coupler 42-52 mm (2 in)
Motor: 24 V DC, 165 W
Duty-cycle: 50% when running more than 30min.

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Drawing
Medium Roll Down Slow (239.701)
More detailed drawings can be found in Appendix 1 on page 20

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Introduction
Thank you for selecting the Medium Roll Down, a DMX controlled roll down system from Wahlberg
Motion Design. Before using the Wahlberg Medium Roll Down for the first time, please read this
manual carefully. Failure in handling can cause injury of persons and/or damage the roll down.
Package content
1× Medium Roll Down Slow
2× Manfrotto Slim coupler
2× Mounting bolt, nut, and washers (M12) for slim coupler mounting
1× powerCon TRUE1 female plug NAC3FX-W for power cable
1x User Manual
1x Cheat sheet
Description
The Medium Roll Down is for stage use, mainly for use in theatres, shows, and concerts. It lifts
small curtains, projector screens or similar in and out of the stage sphere at maximum load of 20
kg. The length of the drum depends on the application and can easily be changed. The lifting speed
is up to 38 cm/s and is highly accurate, so it stops within 2 mm of the target position. Multiple
Medium Roll Downs can easily be connected as a chain, allowing for advanced and creative ways
of making dynamic movements.
The product is controlled through 6 DMX channels from a lighting desk, where the position and
speed can be changed live or pre-programmed as wished. Through the lighting desk the top and
bottom positions can also be set. However, the hard-limit top is also detected by the optical sensor
that will help secure an equal start point on one or more products. Furthermore, the unit can be
controlled using a Manual Control Box from Wahlberg Motion Design, or alternatively manually
through mode 9 or 0.
Safety functions
The control system ensures that the motor is only powered when:
•The DMX signal is reliable.
•The speed control channel is on (more than 0%).
•The motor is instructed to move.
•No overload.
•The attached fabric is detected by the optical sensor (mode 4, 5 and 6)
The product should only be operated by an experienced lighting-desk-operator. The lighting desk
must be programmed according to the manual, so the unit will stop when the speed is put to 0 %.
It is also possible for the user to stop the Medium Roll Down by disconnecting the mains power.
After Power interruption the top position needs to be reset before the product can function again

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Area of use
For indoor use only!
WARNING! To reduce the risk of electric shock or injury: use indoors only
WARNING! To reduce the risk of electric shock, do not expose to rain: store indoors!
The product is intended for indoor use only. It is designed for lifting and lowering material at the
weight and speed stated in "Technical Data". Any other use of the product may result in a risk of
injury of persons or equipment damage.
Exceeding the load rating may cause failure of the equipment.
Do not modify the product. For any modification contact Wahlberg Motion Design.
It is the customers' responsibility that any local restrictions concerning the use are fulfilled.
Using for the first time
Important! The product must be protected from environmental factors such as physical shocks
and vibration during transportation and storage.
WARNING! Read “Safety Information” on page 2 before installing, powering, operating, or
servicing the product. Before applying power to the unit:
−Check the Wahlberg Motion Design website at www.wahlberg.dk for the most recent
documentation and technical information about the product. Wahlberg user manual revisions
are identified by the revision number in the bottom of each page.
−Carefully review the “Safety Instructions” on page 2.
−Check that the local AC mains power source is within the voltage and frequency ranges specified
on the product.
−See “Power cables and power plug” on page 2. Install a Neutrik powerCON TRUE1 NAC3FX-W
power input connector on a suitable power cable. If using the power from a mains power outlet,
install a suitable power plug on the power cable.
Transport
Important! The product must be protected from environmental factors such as physical shocks
and vibration during transportation.
Use only the original packaging, flight case, or pallet frame for protecting the product during
transport. Contact Wahlberg for enquiries regarding flight cases or pallet frames.

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Physical installation
WARNING! The product must be either fastened to a flat surface such as a roof or clamped to a
truss or similar structure. Do not apply power if it is not securely fastened.
WARNING! The supporting surface must be hard and flat. Fasten the product securely.
WARNING! Use only the supplied rigging clamp and M12 bolt. The clamp must be screwed into
the mounting brackets using the supplied M12 washers and M12 locking-nuts.
WARNING! When the unit is installed in a location where it may cause injury or damage if it
falls, install a secondary suspension such a BGV C1/DGUV 17 safety cable at the primary
suspension (clamp) nearest the motor unit, and fasten it securely between the truss/pipe and
the top bar of the product. Make sure the safety cable is rated for the total weight of the
complete unit including the load.
Fastening the product to a flat surface
The product can be fastened to flat surface such as a roof. Check that the surface can support at
least 10 times the weight of all products and equipment to be installed on it, and that the
installation respects all locally applicable regulations.
Mounting the product on a truss (tube/pipe)
The unit can be clamped to a truss or similar rigging structure.
To clamp a product to a truss (tube/pipe):
1. Check that the rigging clamp is undamaged and that the rigging structure can support at
least 10 times the combined weight of all products and equipment to be installed on it.
2. Use the supplied rigging clamp or contact Wahlberg Motion Design for a replacement.
3. Fasten the clamp to the unit with the supplied M12 bolts, nuts, and washers in the hole of
the mounting clamp on the unit.
4. Block access under the work area. Working from a stable platform, hang the product on the
truss with the fabric downwards. Tighten the rigging clamp.
5. Install a suitable safety cable when the product is hanging over-head and consider adding
one additional safety cable opposite the motor unit if the failure of one primary suspension
will pose a risk.
Safety Cables

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AC power
WARNING! Read “Safety Information” on page 2 before connecting the product to AC mains
power.
WARNING! For protection from electric shock, the unit must be grounded (earthed). The power
distribution circuit must be equipped with a fuse or circuit breaker and ground-fault (earth-fault)
protection.
Voltage
WARNING! Check that the voltage range specified on the products serial number label matches
the local AC mains power voltage before applying power. Do not apply AC mains power to the
unit at any other voltage than specified on the serial number label.
Power cables and power plug
The product requires a power input cable with a Neutrik powerCON TRUE1 NAC3FX-W cable
connector for AC mains power input. The cable must meet the requirements listed under
“Protection from electric shock” on page 2.
If you install a power plug on the power cable, install a grounding-type (earthed) plug that is rated
20 A for USA and 16A for Europe. Follow the plug manufacturer’s instructions. Table 1 shows
standard wire color-coding schemes and some possible pin identification schemes; if pins are not
clearly identified, or if you have any doubts about proper installation, consult a qualified
electrician.
Table 1 - Colour guide
Wire Colour
Conductor
Symbol
Screw (US)
Brown
Live
L
Yellow or brass
Blue
Neutral
N
Silver
Yellow/green
Ground (earth)
or
Green
Installing a power input connector on a power cable
To install a Neutrik powerCON TRUE1 NAC3FX-W input connector on a power cable, follow the
original Neutrik instructions in Appendix 2 on page 21.
By supplying power to the unit, the DMX and Mode LED should light up or start flashing depending
on the situation, see page 11 for setup.

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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.
The product is subject to the common limit of 32 devices per daisy-chained link. Note that if
independent control of a Medium Roll Down 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 Medium Roll Down to data:
1. Connect the DMX data output from the DMX controller to the Medium Roll Down’s male
5-pin XLR DMX input connector (DMX 512 IN).
2. Connect the DMX output of the Medium Roll Down to the DMX input of the next Medium
Roll Down and continue connecting Medium Roll Downs output to input (DMX 512 OUT).
3. Terminate the last Medium Roll Down on the link with a 120 Ohm resistor.
The DMX lamp is the green led, next to the DMX-selectors.
−Glows constant, when the DMX connection is correct.
−Flash if the DMX signal is missing or wrongly connected. Note that for mode 7-8-9-0 no
DMX signal is needed, thus the DMX lamp will blink but the Medium Roll Down will
operate as desired.

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Setup
WARNING! Read “Safety Information” on page 2 before installing, powering, operating, or
servicing the Medium Roll Down.
WARNING! Only experienced DMX users should operate the Medium Roll Down. Contact
Wahlberg for further information and education on DMX protocol.
Mounting the load
When mounting the load make sure it is orientated correctly,
otherwise the fabric mounted will roll over itself in the
wrong direction when moving to the top position.
The easiest way to mount a load on the tube is simply to
attach it with double sided tape. Just make sure that at least
1 full rotation is left on the tube when it is rolled all the way
out in operation.

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Mode setting
The mode switch is found on the front panel left to the DMX address switches and this can be used
to select various functions and ramps for normal operation, setup and diagnostic purpose.
Mode setting overview
MODE
Function
Description
Note
1
DMX Positioning slow ramp
For normal operation of the Medium Roll
Down, and the slow, medium or fast ramps
may be selected depending on the use and the
type of load.
See page 13, 14 and
Figure 1 for details
about the setup and
run.
2
DMX Positioning medium ramp
3
DMX Positioning with fast
ramp
4
DMX Positioning slow ramp
and hard-limits active
(optical sensor)
For applications where hard-limit switches are
desired, like in situations where the range
needs to be limited by a hardwired switch. The
slow, medium or fast ramps may be selected
depending on the use and the type of load.
For more information
about this option see
manual for the DMX
Motor Unit.
5
DMX Positioning medium ramp
and hard-limits active
(optical sensor)
6
DMX Positioning with fast
ramp and hard-limits active
(optical sensor)
7
Manual set soft limit top and
bottom position using the
control box
Manually set/run to the soft limit top and
bottom positions using the optional control box
(not included), as for stand-alone operation
without DMX.
See page 16 for
details about the
setup and run.
CAUTION! Manual
modes will overrule
any DMX control,
and movement of
the motor may only
be interrupted by
powering off the
mains voltage.
8
Manual run to top and bottom
limits using the control box
9
Manual CW (DMX address =
speed)
Manually setting the motor to a desired
direction and speed via the DMX address
switches, for simple stand-alone operation
without DMX control.
0
Manual CCW (DMX address =
speed)
DMX ADDRESS setting and channel overview
The DMX address, also known as the start channel, is the first channel used to receive instructions
from the controller. For independent control, each Medium Roll Down must be assigned its own
control channels.
The DMX address is configured using the three DMX ADDRESS selectors on the Medium Roll Down.
The selected DMX address states from which channels, on the lighting desk, the Medium Roll
Down is controlled. The Medium Roll Down uses 6 DMX channels. The example below shows a
DMX start address 212 (200+10+2).

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DMX channel overview
DMX
channel
Function
Description
1
Position rough
This channel controls the position of the Medium Roll Down, with the speed (DMX channel
3).
This rough position works together with the fine position (DMX channel 2).
The rough position and the fine position are multiplied in to a 16-bit channel. The rough
position is the MSB.
2
Position fine
This channel controls the position of the Medium Roll Down, with the speed set on DMX
channel 3.
This fine position works together with the rough position (DMX channel 1).
The fine position and the rough position are multiplied in to a 16-bit channel. The fine
position is the LSB
3
Speed
This channel controls the speed of the Medium Roll Down.
This channel defines the maximum speed, and the Medium Roll Down slows down as
closing in on the wanted position.
This channel also works as a main brake; the motor does not run unless the channel is set
above 0%. The speed-channel can also be used to make soft and slow movements or fast
and sudden movements.
4
Enable save
soft limits
When channel 4 is between 60-65% saving of soft-limit top and bottom position is enabled.
The Medium Roll Down can be operated while channel 4 is between 60-65%, however, to
minimise the risk of accidentally setting new top and bottom limit, channel 4 should be set
to 0% when not in use.
5
Manuel Up /
Set soft-limit
top (100%
position)
The value of the channel determines the speed at which the Medium Roll Down moves up.
This channel overrules movement with positioning via channel 1 & 2.
•Channel 4 between 60-65% enable save soft-limits.
When channel 4 is in this range the top position can be adjusted using channel 5.
The Top position is saved when channel 5 is put back at 0%. Note that it should be
moved gradually towards 0% to give the banner time to slow down.
The top position should be set with channel 5 before the bottom position is set with
channel 6, since the range is calculated relative to the top position.
•Channel 4 not between 60-65% enable save soft-limits is NOT enabled.
When save soft-limits is not enabled, channel 5 can still run the roll up but any position
is not saved, so it returns to the position given by channel 1 &2.
For securing an equal soft-limit top position on several products, this channel may also be
used to align the start position at the hard-limit top position before the soft-limit setup
procedure is initiated.
6
Manuel Down
/ Set soft-limit
bottom, and
range (0%
position)
The value of the channel determines the speed at which the Medium Roll Down moves up.
This channel overrules movement with positioning via channel 1 & 2.
•Channel 4 between 60-65% enable save soft-limits.
When channel 4 is in this range the end position can be adjusted when running with
channel 6. The bottom position is set when channel 6 is put back at 0%.
The top position should be set with channel 5 before the bottom position is set with
channel 6, since the range is calculated relative to the top position.
•Channel 4 not between 60-65% enable save soft-limits is NOT enabled.
When save soft-limits is not enabled, channel 5 can still run the roll down but any
position is not saved, so it returns to the position given by channel 1 & 2.

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Setting the top and end positions
When the Medium Roll Down is ready, the first step is to set the soft-limit top and bottom
positions. See channel description for channel 4, 5 and 6 above. When the range has been set once
on channel 6 it is saved and does not need to be set again unless a new range is needed.
Example:
−DMX channel 5 is set to 30% →The roll start moving-up until it reaches the hard-limit.
−DMX channel 5 is set to 0% and channel 6 to 30%→The roll start moving down.
−DMX channel 6 is set to 0%→Stop the roll halfway down.
−DMX channel 4 is set to 62% →Soft-limit save enabled.
−DMX channel 5 is set to 30% →The roll starts moving up.
−DMX channel 5 is set to 0% →The roll stops, and the soft-limit top position is saved at
this point.
−DMX channel 6 is set to 30% →The roll starts to move down.
−DMX channel 6 is set to 0% →The roll stops, and the soft-limit bottom position is also
saved.
The Medium Roll Down is now ready for use and the soft-limit top and bottom positions have been
saved. Finally, the position control with channel 1 and 2 is now relative to the top and bottom soft-
limits settings.
It is recommended to set the soft-limit top position after each power-up, however, moving the
roll to the top position before powering off should lead to identical top and bottom positions
whenever the unit is repowered, provided that the drum position was not manually changed or
the drum return to the top position was interrupted by a power failure, furthermore excessive
transportation conditions may also affect the drum position.
For further guidance see below illustration for application of the soft-limits.
Setting soft-limit top
position (DMX Ch. 5)
Setting soft-limit bottom
position (DMX Ch.6)
Working range and
speed
(DMX Ch. 1, 2 & 3)
Adjustable
Step
1
Step
2
Step
3
Down
Up
Hard-limit top sensor
(optical)

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Figure 1: Illustration of application of the soft-limits.
Positioning
When the Medium Roll Down has been setup and the top position is set, it is possible to use it for
positioning run.
The position is set on the DMX channel 1 and 2, which controls the rough-and fine-position. Where
100 % is the top-position and 0 % is the bottom-position.
The positions lamp indicates, by fast flashing, that the Medium Roll Down is going towards the
wanted position. The position lamp indicates, by stable light, that the Medium Roll Down has
found the wanted position and the motor has stopped.
The speed is set on the DMX channel 3, where 100 % is the fastest and 0 % is the slowest.
The Medium Roll Down does not run unless DMX channel 3 is set above zero, and therefore this
channel works as a main brake.

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Manual operation using the Control Box
Insert the control box (not included) into the limit switch connector and apply mains power to the
product.
Procedure:
State
Step
Description
Setup/
Adjustment
1
Select mode 7 on the MODE switch and set a slow motor speed using the DMX
address switches, approx. 100 is recommended for setup purpose.
2
Push the Up (CW) button on the control box and keep it pushed until the desired
soft-limit top position is reached.
3
Push the Down (CCW) button on the control box and keep it pushed until the
desired soft-limit bottom position is reached.
4
Select mode 8 and set the desired speed using a value between 060 and 512 on
the DMX address switches (The minimum obtainable speed may vary due to the
weight of the load).
Operation
1
Push the Up (CW) button and the motor will move to the top position.
2
Push the Down (CCW) button and the motor will move to the bottom position.
Power
down
-
Return to the top position as this is always the expected position at power-on. In
case this is not followed, a full setup procedure will need to be done.
Power-on
-
Whenever the product is repowered, there should be no need to setup the top
and bottom positions, provided the product was powered down at the top
position, and the shaft position was not changed (manually or due to
transportation).
Control box and Hard-limit switch port
The following table shows the needed connections to the control box port for using the manual
mode, it also includes the connections for hard-limit top sensor applied (optical sensor included).
Pin
Control box option
(mode 7 and 8)
Hard-limit switch option
(mode 4, 5 and 6)
Connector
LIMIT SWITCH
1
GND (COM/Common)
GND (COM/Common)
2
Down (CCW) control button input
(NO/normal open switch type)
CW(Up) hard-limit switch input
(NC/normal closed switch type)
3
Up (CW) control button input
(NO/normal open switch type)
CCW(Down) hard-limit switch input
(NC/normal closed switch type)
4
+5VDC output (optional)
+5VDC output (optional)
Note: All inputs are internally pulled-up to +5V, and then activated by a short (externally switch) to the
GND pin.

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Duty-cycle
When the unit is continually operated for more than 30 minutes at full load, speed and high
ambient temperatures, the below duty-cycle (DC) limitation will need to be considered.
The duty-cycle (DC) is the fraction of a period where the motor is active. The duty-cycle is
commonly expressed as a percentage or ratio. Its described as the period it takes for a system to
complete an on-and-off cycle.
Thus, a 10% duty-cycle means the system is on 10% of the time and off 90% of the time. The “on
time” for a duty-cycle is normally related with a cycle length in time. E.g. a max duty-cycle of 50%
(30 min. ON / 30 min. OFF), means that the motor may not be active for more than 30 minutes
every hour, or after 5s ON the motor must be OFF for 5s if continually operated for more than 30
minutes.
Synchronized movements of multiple Medium Roll Downs
If several Medium Roll Downs are installed to perform synchronized movements, the best result
is achieved by using a fading 16-bit position. By nature, there is a slight deviation in performance
of the motors, and some motors have a slightly higher maximum speed than others.
Like when fading light, the positions of the different Medium Roll Downs should be faded, and the
Medium Roll Downs will tend to follow that fade. When fading the positions:
1. The speed channel should be a set to 100 % to gain the highest possible speed.
2. The position channel should be added as a 16-bit channel and not just the MSB on channel
1.
3. The speed of the fade needs to be slower than the maximum speed, so the motors have
speed enough to perform the movement.
If the fade of the positions is too fast, the Medium Roll Downs will move at the maximum speed,
and you will see the difference in the motor speed.
If the fade is to slow the Medium Roll Downs will move –stop –move –stop, when the position
changes, thus giving a discontinuous movement.
For static alignment of two or more products, see the example and illustration on page 14.
Load
(weight)
t-ambient
(Room temperature)
100%
40°C
30°C
100% DC
<30 min.
50% DC
>30 min.

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Service and maintenance
WARNING! Read “Safety Information” on page 2 before servicing the Medium Roll Down.
WARNING! Disconnect the Medium Roll Down from AC mains power and allow cooling down
for at least 10 minutes before handling.
WARNING! Refer any service operation not described in this user manual to a qualified service
technician.
WARNING! Incorrect insertion of the powerCON TRUE1 may cause electrical contact
misalignment resulting in equipment malfunction and/or personal injury.
ATTENTION! Interval of inspections should be determined according to the frequency of use and
the working scenario of the Medium Roll Down.
ATTENTION! Signs of malfunction or poor operation should always lead to an inspection of the
Medium Roll Down, and the Medium Roll Down should be taken out of operation until the error
is eliminated.
Spare parts
Only parts ordered at or approved by Wahlberg should be used in the Medium Roll Down to ensure
product function and stability. Contact Wahlberg to inquire about spare parts.
On-site service
On-site service and maintenance can be provided by the Wahlberg Motion Design, giving owners
access to Wahlberg Motion Design’s expertise and product knowledge in a partnership that will
ensure the highest level of performance throughout the product’s lifetime. Please contact
Wahlberg Motion Design for details.
Maintenance plan
The results of all the regular inspections are to be documented and kept available at the company.
The written result of the last inspection must be kept available at the site of operation, e.g. by an
inspection sticker on the Medium Roll Down showing the date of the inspection, the basis of the
inspection and the name of the inspector.
Before every use and weekly
Every time when rigging the Medium Roll Down, before running the Medium Roll Down –and
at least every week when the Medium Roll Down is in use:
−Check that the fabric is winded neatly on the drum.
Monthly
At regular intervals –but at least every month when the Medium Roll Down is in use:
−Check the mounting clamp and snap hook for damages and proper fastening.
−Change damaged parts according to this manual.
Yearly
The Medium Roll Down has to be inspected by a specialist every 12 months.
Every 48 months
The Medium Roll Down should be inspected by an authorised expert every 48 months.

239.805.001 19 Date: 2020-03-11
Checklist
Use the checklist accordingly; before each use, each month etc.
Check
Type
Result
Installed / mounted correct
Inspection
Load and LEDs visible for the operator
Inspection
Load mounted safely
Inspection
Hard-limit top sensor (optical)
Functional
powerCON TRUE1
Inspection
powerCON TRUE1
Regularly check the condition of the powerCON TRUE1 connector system (cable connector and
chassis) for clear signs of wear and tear.
Through improper use and the excessive use of force, the encoding lugs and guide slots in the
connector system can become so severely worn or damaged that it is possible to insert the cable
connector the wrong way. However, when inserted the wrong way, the cable connector should
not twist-lock into place.
A cable connector inserted the wrong way could, in some circumstances, lead to contact between
live wires and the grounding contact in the plug socket.
To determine that the cable connector is inserted correctly, follow the use instructions and listen
for the “click” when performing the twist-lock. Immediately unplug any connector that does not
twist-lock correctly in place.

239.805.001 20 Date: 2020-03-11
Appendix 1 - Dimensions
Medium Roll Down
FRONT VIEW
TOP VIEW