Page 1
PJB.09/89
Leaflet 40/B487
Strand Lighting
MULTIDIM
INSTALLATION INSTRUCTIONS
Strand Lighting
Architectural Division,
Unit 2, Grant Way, lsleworth,
Middlesex TW7 5QD.
Tel: 015603171
Fax: 015682103
( .
Contents:
Dimmer location & fixing
Mains supply & Load connections
Maximum Loadings
Control Wiring
Adjustments (switches)
Adjustments (potentiometer settings)
Accessories
Appendix A : H.F. Electronic Ballasts
Appendix B : Dimmer control terminals
Page No.
1
2
3
5
17
18
19
23
25
Page 2
WARNING: THIS EQUIPMENT SHOULD BE INSTALLED BY A
QUALIFIED ELECTRICIAN. ISOLATE THE SUPPLY
PRIOR TO WORKING.
MAINS CONNECTIONS
Complete the mains wiring as shown below:
Location:
Ventilation: Maximum ambient temperature is 35°C - ensure
Sound:
Supply:
The dimmer must be fixed vertically to a flat
wall, with allowance made for heat dissipated by
the unit.
Mount with at least 75 mm (3 inches) air gap above
and below each unit.
Suitable for (dry) interiors only.
adequate ventilation, allowing for up to 2% of the
connected load being dissipated as heat at the
dimmer.
Avoid mounting in 'silent' areas, as all dimmers
produce a small amount of audible humming noise,
due to electrical filtering.
220/240 Volts Single phase A.C., 50 Hz.
WALL FIXING
r:;-1 Loosen the retaining screw and separate the dimmer module
~
from its base - do not rest the dimmer on its pins.
SUPPLY
PHASE~
EARTH
NEUTRA L
ltage Lowvo
rol
cont
connec
IMPORTANT NOTES:
tions
(16to
-
1)
00
p I E
I
BASE SOCKET
00000
N
I
LV
LF
OUTPUT
CABLES
DIRECT TO
LOAD
IN
E
I
....
NEUTRAL
.....
....
EARTH
....
~
LINE 'FIXED'*
...
....
LINE
.....
'VARIABLE'
NOTE: The
*
I
LF' terminal is
only used when
I
he load is
t
luorescent.
f
r:;'l Remove the front cover from the
LJ base moulding (4 screws)~
f;l Fix the dimmer base in place
l=_J using three No. 10 woodscrews.
All three fixings should be used.
If using Strandrail, first see the
Accessories section on page 19.
1
CJ
0 0
0 0
1) Route mains cables as shown, and ensure each Neutral
conductor runs alongside its associated 'Line' conductor .
2) Dimmer outputs must not be connected in parallel.
3) Do not use high voltage testers (e.g. 'Meggers') on this
equipment.
4) Sub-cicuit fuses / MCBs may be installed downstream of the
dimmer if required, provided the above point (1) is observed.
5) The two 'live' conductors for fluorescent installations should
be separately identified, as they must not be 'mixed up' at the
fittings.
6) See overleaf for LOADING information.
2
Page 3
DIMMER LOADING
Check that the load being connected is correct for the version of
dimmer being used:
TUNGSTEN LOADS
fV!aximu~ load is as per_the dimmer's MCB rating, providing the
dimmer Is not enclosed
TRANSFORMER-FED LOADS
in a way which restricts ventilation.
FLUORESCENT LOADS
Fluorescent fittings to be dimmed
approved type of dimmable ballasts. Consult Strand if in
doubt. The two 'line' conductors must not be reversed at
the fittings:
Line Variable (LV) is the dimmed line
Line Fixed (LF) is the tube heater supply (connect to "L" in
the case of UDTs.)
must be equipped with
r;/J
Suggested maximum loadings are as in the Table below. These
values apply to step-up transformers (e.g. for Cold Cathode) as
well as to step down transformers for low-voltage lighting .
These values assume that the particular transformers used are
approved for dimming by their manufacturer. Multidim IS an
'inductive', hard-fired dimmer .
For further guidelines, see Strand Lighting's "Guide to dimming
of Transformer-fed loads".
Version
6Ampdimmer
16 Amp dimmer
Amp dimmer
32
Loading*
Up to 900W
Up to 2,400 W
Upto 4,500W
* Calculate by adding up
total lamp 'Wattage'.
LOAD
WIRING
(from
dimmer) -------
FI uorescent fitting (incorporating
compatible dimmable control-gear)
MAXIMUM LOADINGS (4-WIRE SYSTEMS)
The maximum number of lamps (tubes) to be connected are
as follows. Note : In the case of
dimming Ballasts, ignore this Table and instead see
Appendix A.
-----LV
.-----. LF
____
----•E
~~
Electronic high frequency
..,. N
Max. no. of tubes (tube type)
Dimmer version
2 ft
20W* 18W
4ft. 5 ft. 6 ft.
(40Wor (65Wor
36W) 58W)
(75Wor
70W)
3
6Ampdimmer
16 Amp dimmer
32 Amp dimmer
28 15 14
75 ·
142
42
85
38 24 20
71
* Assumes 20Wtubes are wired in pairs _to an 09 320 06 Ballast.
4
9
7
44 37
Page 4
CONTROL WIRING
The cable between the dimmer and the Control Station(s) should
be colour-coded multicore
up to 1.5mm, but mains ea le is not ideal). A typical cable is
710.2mm, though many other types may be suitable, .since signals
are low current and low voltage (-1 SV d.c.) only.
Routing of the control cable should avoid close proximity to
other cables which supply equipment likely to induce
interference , such as large motors, cinema projectors, HMI
lighting etc.
CONNECTIONS
Connections are made on the terminals in the lower part of
the dimmer Base. Choose the appropriate diagram from the
following examples and wire the Control Station accordingly:
si6nal Cable. (the terminals will accept
ROTARY
CONTROL
STATION
(09 400 00)
0
2 3
10 9 8 7 6
Control Station Cat. No. Diagram
Page
i ROTARY (1-Gang) 09 400 00 A
1-Gang SLIDER 09 401 01 B
SLIDER w ith TAKE CONTROL 09 408 01
2-Gang SLIDERS 09 402 02 D 7
: 3-Gang SLIDERS
I
! 6-Gang SLIDERS
1-Gang PUSHBUTTON (Preset) 09 411 04 E 8
1
I
j 2-Gang PUSHBUTTON (Preset) 09 412 08
! 3-Gang PUSHBUTTON (Preset)
I 6-Gang PUSHBUTTON (Preset)
i
I UP/STOP/DOWN PUSHBUTTONS
I
I INFRA-RED RECEIVER
'
! SCENE-SET CONNECTION
I
SLAVING DIMMERS TOGETHER - J
09403 03
09406 06
09 413 12
09 416 24
09 411 03
09 471 00
-
C
K 12
L
G 9
M
N 15
H 10
E 8
F 9
5
6
6
7
13
14
11
Dimmer Base
1-GANG
SLIDER
CONTROL
STATION:
(09 401 01)
2 3 4 5 6
10 9 8 7 6
Dimmer Base
6
Page 5
~
SLIDER with TAKE CONTROL : (09 408 01)
~D
,__ ________ +- __ _____..._ - ---- -----+ Take
16 15 14 13 12 11 10 9 8 7
L--------+---+-- __ --41 ___ -+ other
~D
2 3
"-----+---4-----L ...... -+
-- - --• To
Control
Stations
1-GANG PRESET
CONTROL STATION
(09 411 04)
OR
OR
INFRA-RED RECEIVER
(0947100)
( see Notes be I ow) .....-~....----.--.......---.----.
2 3 4 5 6
_ _ -:_:_-:_-:_-:_t Toother0941104
------+ Stations and/or
---- --
______ ------+ Max. No. = 5.
------• Infra-red Receivers
- ------+
lnl 2-GANG
~
SLIDER
CONTROL
STATION:
(09 402 02)
Dimmer Base
Dimmer 1
2 3 4 5 6
16 15 14 13 12 11 10 9 8 7 6
Dimmer 2
16 15 14 13 12 11
Dimmer Base
5 4 3 2 1
INFRA-RED STATIONS: INSTALLATION NOTES
For reliable operation, observe the following points:
1) The Infra-Red Receiver Station should normally be
mounted flush into a vertical wall, and within direct
line of sight of the likely operating position of the
hand-held Transmitter.
Maximum operating range in normal conditions is 20
metres, and acceptance angle at this range is
approximately 30°, centred around the
perpendicular.to
3) Do not position the Receiver within 1 metre of a T.V.
monitor or a VDU.
4) Install the battery in its compartment in the
Transmitter, direct the beam at the Receiver's window
and press a button. An LED within the Receiver
window gives a 'message received' signal.
7
8
Page 6
SCENE-SET
CONNECTION:
Group of
dimmers*
controlled from
1-GANG
PUSHBUTIONS.
~
UP/ STOP/ DOWN
LJ CONTROL
STATION:
(09 411 03)
§
*Preset type
dimmers
only
~-------------------------+
,--------t--+--t--t---r--------------- - - -- ---+
1E 15 14 13 12 11 10 9 8 7 6
Dimmer 1
~
~
2-GANG
PRESET
CONTROL
STATION :
(09 412 08)
___j
......,r-t------+--+----+-+---------+
.--+-------+---+-----+-+.....-------+
.,_----+----+----+--+-+--
,-------------------+
3 4 5 6
8 9 10
- - - - - - ..
Dimmer 2
Further 09 412 08
Stations may be
"daisy-chained" in
parallel
To other
dimmers
4 5
3
2
16 15 14 13 12 11 10 9 8 7
Dimmer Base
6
-
--
---•
---+
---•
---+
To other
U/S/D
Control
Stations
3 2
16 15 U 13 12 11 10 9 8 7 6
Dimmer 1
9
5 4 3 2 1
Dimmer 2
10
Page 7
DIMMER SLAVING:
Adding on 'Slaves' to follow a 'Master' dimmer.
NOTES:
1) Slave dimmers connected as shown will follow the
level of the Master dimmer.
2) Connections to the Control Station are omitted on
the drawing below for clarity.
Control
Station
(any
type)
l1l2l3l4ls1,1
I I ' • I '
I I I I I I
+ •••••
(normal connections: to
MASTER dimmer only)
To other
Slave
z
0
a: I-
w c:x:
C1-
::i II'\-
VI -I M
c,00
z 0:::: M
c:(1-0
z~
'-'om
mu8
~
"'
"'
"'
,..,
...
...
...
<II
E
"'
E
!:!
0
::
~
~
::
~
~
N
"'
"'
N
...
...
<II
...
E
E
"'
!:!
0
::
~
~
::
~
~
/
MASTER Dimmer
(Manual or Preset type)
SLAVE Dimmer (Manual type)
11
~
---co-
---co-
---co-
12
N
"'
"'
...
..
"'
!:!
::
~
~
:!
~
:e
0
,_
<II
E
E
Page 8
6-GANG SLIDER (with Master) CONTROL STATION
[g
M
(09 406 06)
-"'
LU
~~~~~~
213141516171819
~
16l15l14l13l12l11l10l9 I 817 I 6
16l15l14113l12l11l10l9 I 817 I 6
16115114 In 112111 110 I 9 I a I 7 I 6
.........
Dimmer 1
Dimmer3
Dimmer 5
16l15l14l13l12l11 l10l9 I 817
Dimmer 2
16l15l14113l12l11l10l9 I 817 I 6
Dimmer4
16l15l14l13l12l11l10l9 I 817 I 6
Dimmer6
I 6
---
..p..
r.=======;i
~~~
TB1
I 1 I 2 I 3 I 4 I s I 6 I 7 I a I 9 I 10 I
,-
I--
r;;l 3-GANG PUSHBUTTON
~
1 I 2
I
CONTROLSTA'rlON:
(0941312)
TB2
3 I 4 I
\
I
11611sl14ln112h110191a 116151413 21, I
Dimmer 1
i
r
htihsh4ln112h1hol9 al7 I 6 514131211 I
Dimmer 2
l
I
h6h5h4lnh2h1hol9 I ah I 615l4l 3l 2 I 1 I
Dimmer 3
I
Page 9
z
0
I-
<!
I-
V\
...J
0
a::
1-
z
0
u
z
0
~
::::,
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=>-
0.. q-
c, N
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<(q-
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u!,2.
- ..
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1 .... ....:,
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....
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,...
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c:,
,-:::
..:::.
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...::::.
1.0
...
QI
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0
Ll'l
...
QI
E
E
0
INSTALLING THE DIMMER MODULE
After completing all wiring, replace the front & side covers on
the Base socket/s (as appropriate).
The dimmer module must be correctly aligned top and bottom
before it may be plugged into the Base.
If it does not fit, DO NOT FORCE IT.
In event of difficulty, view the Module from below, and use a
finger to manoeuvre the metal pin into its mating socket on the
Base .
Ensure that the dimmer module is fully "home" and rests flat
afiainst the dimmer Base, both top and bottom .
T e captive dimmer-retaining screw should be tinier-tightened
only (over-tightening may cause lower part oft e Module to
rise from the Base, breaking contact).
....
m
I- -
~
u
0
...J
al
_J ••
oz
a::O
1--
zl-
0~
UV\
-
'---
-
-
-
-
'---
-
'---
"'
.,
,...
"'
"'
..
"' I---
N-
-
-
"'
'--
N
.,
m
-
1--
-
,...
~
u
---
0
"'
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--
al
~
_J ..
oz
1--
zlo<t
ulii
"'
---
..
-
--a::O
-
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'--
N
-
-
-
15
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I-
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0
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_J ..
oz
a::O
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--
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-
,...
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-
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-
16
Page 10
SWITCH SETTINGS
Set the switches as appropriate. Note that not
every dimmer has all switches fitted.
B /- -,
:"*---J' I&\ "
~
: ' /
Speed Switch
Position of switch defines the range of
adjustment available on the UP and DOWN
speed potentiometers .
"FAST" selects range 0.3 to 30 sees.
"SLOW" selects range 3 to 300 sees.
Restart Mode . .
The dimmer may be set so that when mains 1s
applied it will power up in either Preset O or
Preset A.
Choose the preferred start-up condition and set
the switch accordingly .
"Fast Start" option (Fluorescent)
This switch should only be set to 'Enable' where
approved* type of electronic H.F.
Ballasts are used. In these cases, see special
instructions in Appendix A.
For normal applications, this switch must be left
disabled .
\
~
..... -.,...
I
dimmi~g
······················
Usual
setting:
'FAST'
························
~
Usual :
\ setting: \
\ 'PRESET O' \
························
······················
Usual
setting :
'DISABLE'
ADJUSTMENTS
Using the trimtool provided, adjust
the potentiometers through the
holes in the front cover.
Top Set
Adjust (if neccessary) to give the
required
when the dimmers control is set to
'full'.
Bottom Set
Adjustment is occasionally necessary on fluorescent dimmers
to obtain a smooth dim to "off".
Starti!')g fro~ with ~he diry,~er at zero and gently raise the
level
JUS~ until the dimmers internal relay is heard to click in.
Then
that. 1f
obtainable will be approx. 10% light.
Preset adjustments {where applicable)
Select the Presets _in turn from the Control Station
~dJust Bottom Set for the lowest stable light level. Note
Note: The a~ov~ adjustments do not apply in the case of Electronic High
Frequency
~ushbuttons, and adJust each potentiometer for the desired
light level for that Preset.
Usual settings: A
~axim~m light output
UDT~ are used in the fittings, the lowest level
dimming Ballasts. In these cases see instead Appendix A.
= 100%
B = Medium;
C
= Low
0 = Off.
__
----------.... .
-1--~=
a
.
.
*if in doubt, consult Strand Lighting .
Heater Save (Fluorescent)
This facility will automatically disconnect the
supply to the tube heaters whenever tube light
output is at full.
Set the switch to 'Enable' if this option is
required.
17
······················
Usual
setting:
'DISABLE'
······················
Fade Speed {fine adjustments)
Adjust the "Up" and "Down" potentiometers for the required
speed of response when the push buttons are pressed.
18
Page 11
ACCESSORIES
USING THE ACCESSORIES
~
INSTALLING ONE ROW OF DIMMERS
STRANDRAIL
(09 874 07)
Each lengt~ of rail is suitable
for
mounting up to seven . · .. • · ............ • w•.•··· w ............. · .· .. w.•• . .
dimmers, or five dimmers plus one Mains Connection Box.
BUSBAR CONNECTORS
(09 873 00)
A Set of three Busbar Connectors is
used to link supply busbars between
Bases or from a Base to a Mains Box.
To fit the Connectors, first remove the
small panel on the appropriate
sid~ of
the dimmer Base. The panel slides
downwards after slightly lifting its
lower edge.
The three Connectors may then be
pushed on from the side of the Base.
MAINS CONNECTION BOX
(09 872 06)
The Mains Box is used to
terminate one cable (Phase,
Neutral,
& Earth) to feed a
Supply:
Phase,
Neutral,
Earth
row of dimmers. Connection
to the row of dimmers
either side is made via the
Busbar Connectors .
MAINS
BOX
Dimme rs
1) Cut Strandrail to the correct length for the required
number of dimmers. If a Mains Box is used, this will
occupy two slots.
2) Fix the Strandrail to the wall using the woodscrews and
rawlplugs provided.
3) Proceed as appropriate:
If using Mains Box
* Mount the Mains Box to
the Strandrail using the
three screws provided.
No Mains Box used
* Mount the Bases side
by side on the
Strandrail using the
three screws provided
* Remove side cover
& fit
for each.
Busbar Connectors onto
the three exposed
Busbars*. Offer up the
first Base and push onto
the Busbar Connectors.
Secure the Base to the
Strandrail and proceed
similarly with the
remaining Bases, linking
Base to Base.
The P/N/E terminals on
the left side of the Bases
are not used in this case.
* Connect individual
supply cables onto
P/N/E terminals of each
dimmer Base and
proceed as per earlier
Section.
Note: For total current up
to 50 Amps, it is permissable
to feed a group of 'busbar
linked' dimmers from one
suitably rated supply cable
terminated in one Base.
MULTI-PHASE LINK KIT
(09 873 01)
For larger 3-Phase installations, three Ma\ns Box~s are
mounted in a vertical column . Each row of dimmers 1s thus
connected onto a different Phase. The Link Kit is a pair of bars
designed to link Neutrals and Earths between adjacent Mains
Boxes. See page
22 for illustration .
19
*MAINS BOX:
Side view
with cover
removed
Busbars
20
Page 12
MORE THAN ONE ROW OF DIMMERS
Large 3-Phase installat ions are typically arranged as shown in PHASE 1
the Diagram opposite .
3-PHASE SUPPLY FEEDER
MAINS EARTH NEUTRAL
Remove the cover plates between the boxes and mount them
one above the other as shown. Connect one Phase of the D
supply to each Mains Connection Box, but the Neutral to one
box only (maximum loading per row, 130A). Use two
Multiphase Link Kits to link the three Neutrals and the three
Earths across the Mains Connection Boxes.
Multiphase
Link
Kit
. -~- i;;;;I
•
Mains
Box
.
--PHASE 2
Ej
.
Mains
Box
2
•
PHASE 3
Ej
i
•
.
.
•
•
• •
.
. .
Ej
-+WIRING
•
--+
•
--+
OUTGOING
LOAD
21
.
Mains
Box
3
Typical 3-Phase installation
•
22
•
.
.
•
•
Control
Wiring
Page 13
I APPENDIX A I
SPECIAL NOTES ON "2-WIRE" FLUORESCENT DIMMING
The following instructions apply only to dimmers being used
with approved types of
ballasts.
Due to the characteristics of these ballasts correct
commisioning of the system MUST be carried out to
lamps and ballasts. Strand Lighting can provi e this
(chargeable) service, or it may be carried out by the installer .
In the latter case, please note that Strand Lighting cannot be
held responsible for any problems resulting from inadequate
or incorrect commissioning.
Permitted dimmer loading is different for this type of Ballast:
see the Table below .
DIMMER LOADING WITH
I
Dimmer
version
PERMITIED LOADING (NO. OF TUBES)
18W 36W 58W
Electronic high frequency dimmable
ELECTRONIC H.F. BALLASTS ONLY
9rotect
70W
COMMISSIONING: ELECTRONIC H.F. BALLASTS ONLY
1) Remove the load cable from the dimmer's LV terminal
and temporarily connect it directly to the supply terminal
(P).
2) ~witch on the supply and check that all fittings give full
light: any faults must be cleared before the next step.
3) Using a true RMS voltmeter, measure the (full Mains)
voltage now supplying the fittings.
4)
Pla~e a li~ht meter at a fixed central point in the room,
wait 4 minutes, then measure the 'full' light output.
5) Switch off and reconnect the load cable onto the LV
terminal of the dimme-r Base.
Cut link LK 2 on the rear of the dimmer module .
Pl~g the dimmer in and use the trimtool provided to
ad1ust the
Bottom Set fully clockwise .
Set the Fast start switch to ENABLE, and apply power.
6) Set dimmer to OFF at the Control Station.
Sl?wlx raise t_he dimmer_ level until the internal relay just
clicks
in. Wait for the light level to stabilize.
Min . Max. Min. Max. Min. Max.
Min. Max .
6Amp 6 50 4 27 2 18 2 16
-130
16Amp
18
32Amp 36 260
12 76
24
152 12 96 12 92
6
48
6 46
23
7) Now adjust the Bottom Set to give
10% light output
compare~ to 'full' rea~ing measured in step 4. (do not go
below this level, as this may shorten tube-life).
8) From the Control Station, set the dimmer to Full and
then tune the dimmers Top Set adjustment anticlockwise
and observe the output voltage. As the dimmer "backs
off"from full conduction, the output voltage rises
normal Main~. Continue anticlockwise until the output
voltage falls Just (say 5 volts) below that measured in
Step3.
STARTING FROM 'OFF':
The dimmers 'Fast-start' circuit strikes the tubes at
approx. 45%
fader (or Preset)
possible between 10% and 100% light. '
light for about 2 sees before settling to the
level. Following this dimming is
24
above
Page 14
I APPENDIX B I
FUNCTION OF THE DIMMER CONTROL TERMINALS
I Dimmer
I Terminal
I
1 'Panic' inr:>Ut. Connecting to terminal 16 drives dimmer
I
output to Full.
Function
2 Output to Slave dimmer .
3
I
4 Minus 15 Volts DC output. To the Control Station(s) .
I
5
6
Dimmer (manual) control input. [Oto± 10 Volts]
Not Used.
"A" Preset, or the "Up" pushbutton.
7 "B" Preset.
8
I
I
9
I
10 "Stop" function from Up/Stop/Down Control Station.
i
"C" Preset.
"O" Preset, or the "Down" push button .
11-15 Not Used.
16
Technical Earth to the Control Station.
25
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