VMD111/1 Installation Instructions and Technical Specification. Page 1 of 3
VoltMaster
®
Intelligent Transformer
Product order codes for standard 0-10V VoltMaster.
For DSI or DALI digital versions, add suffix /DSI or /DALI eg VMD300/12/SO/DSI
Single outlet Multi outlet
VMD300/12/SO VMD300/12/MO
VMD400/12/SO VMD400/12/MO
VMD400/24/SO VMD400/24/MO
VMDE300/24/SO VMDE300/24/MO
All VoltMasters are now dimmable with order codes as above. Where
dimming is not required, leaving the dimming terminals (C1-C4)
unconnected will deliver the optimum maximum voltage to the lamps:
11.8V for 300/12, 400/12, E300/12 options, 23.6V for 400/24.
For dimming, VoltMaster reduces the brightness of the lamps
according to the level of the 0-10V analogue signal on its dimming
terminals, and this reduced brightness is accurately stabilised against
mains voltage and load variations even at lowest brightness levels.
VoltMaster provides isolation to standards compatible with SELV
(Safe Extra Low Voltage) lighting and is suitable for use with individual
luminaires, tracks and high-wire systems.
VoltMaster conforms to the following standards for EMC:
BSEN55103-1, BSEN55022 Class B, BSEN55103-2, BSEN61000-
4-2, BSEN61000-4-3, BSEN61000-4-4, BSEN61000-4-5,
BSEN61000-4-6, BSEN61000-4-11, following the provisions of EU
EMC Directive/s 89-336-EEC and 92-31-EEC. The applicable safety
standard is BSEN61558-2-6, following the Principal Elements of the
Safety Objectives of the Low Voltage Directive 72-23-EEC.
Load wiring design must observe the following max cable volt drops:
VMD300/12 3V VMD400/12 3V
VMDE300/12 7V VMD400/24 6V
Load wiring design datasheets are available from the ‘technical
guides’ link at www.multiload.co.uk or by contacting Multiload.
Product Dimensions
weight: 9kg
finish: stove enamel
Fig 2. Single-Outlet
Key
A Secondary low voltage multi-outlet terminal pairs. For one or more
individual cables to single lamps. Maximum cable size 4mm
2
B Sensing terminal pair. If this terminal pair is not properly connected the unit
will not give full brightness. See Sensing Connection overleaf.
C Keyhole slots for initial fixing – 4 in total.
D Fixing / mounting holes for secure fixing – 4 in total.
E Cable clamps* – 4 x 20mm knockouts provided.
F Mains supply cable – three core (live, neutral & earth). See mains supply
connection overleaf.
G Cable clamps* – 12 x 20mm knockouts provided.
H Terminal pair for track or single outlet. Use instead of individual
terminal pairs (A). Maximum cable size 10mm
2
J Mains supply terminal block. Mandatory earth must be connected.
K Output fusing per individual terminal pair (A)
See Output fusing overleaf for fuse function.
L Sensing cable.*
M Low voltage cables.*
N Dimming signal terminals
P Earth connection for cover.
Q Single-outlet terminal – for track, high-wire or distribution box connection.
Max cable size 10mm
2
* not supplied with unit
J
Q
L
D
G
M
E
C
F
J
K
A
B
P
N
H
L
D
G
M
Fig 1. Multi-Outlet
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