HELVAR Digidim 458 User manual

Digidim 458
Digidim 458Digidim 458
Digidim 458
8
88
8-
--
-Channel
ChannelChannel
Channel
Dimmer
DimmerDimmer
Dimmer
STEP
STEPSTEP
STEP 6
66
6
Set SDIM
Addresses
STEP
STEPSTEP
STEP 5
55
5
Replace Cover
& Power Up
Unit
STEP
STEPSTEP
STEP 4
44
4
Attach Module
and Make
Connections
STEP 3
STEP 3STEP 3
STEP 3
Electrical
Installation
STEP 2
STEP 2STEP 2
STEP 2
Mount Dimmer
Chassis
STEP 1
STEP 1STEP 1
STEP 1
Disassemble
Dimmer Unit
READY FOR USE
INSTALLATION GUID
E
INSTALLATION GUIDE INSTALLATION GUIDE
INSTALLATION GUID
E

Digidim 458 Dimmer Installation Guide Helvar Ltd.
Doc. No. 7860186 Page 1 Issue 1 (10/7/2008)
Step 1 Disassemble Dimmer Unit
1.1. Remove Cover
2) Remove
screws to
left of door
3) Remove cover from
chassis
1) Open door and
remove screws from
inside door
1.2. Detach Dimmer Module and Remove Knockouts
1. Partially unscrew the two knobs.
2. Remove the module from the chassis.
3. Remove the knockouts. Use the grommets provided to protect cabling going
through the knockouts. If necessary, the knockout gland plates can be removed to
provide more space for cabling.
Module mounting bracket
Unscrew knobs
Knockouts

Digidim 458 Dimmer Installation Guide Helvar Ltd.
Doc. No. 7860186 Page 2 Issue 1 (10/7/2008)
311
363
Note: All dimensions in mm
178
Step 2 Mount Dimmer Chassis
2.1. Mounting Requirements
Mounted vertically on a flat surface.
A clearance of at least 50 mm on all sides of the unit to allow for adequate
ventilation. The grilles must NOT be obstructed.
Sufficient clearance must be left to allow for the connection of cables and trunking.
The ambient temperature must be within the range of 0ºC to 40ºC and the area
must be adequately ventilated.
Humidity must be within the range of 0% to 90% (non-condensing). Do NOT install
this product in a damp location.
2.2. Mounting Procedure
Use 4 screws (not provided) to mount to
the wall (No.8 or No. 10 screws with a head
diameter greater than 6 mm and less than
9 mm).
Note 1 Use the mounting holes located
at the furthest corners of the
chassis.
Note 2: If you are replacing an Imagine
dimmer, e.g.HES99400, and are
using the existing screw
locations, then you can use the
two holes at the top and the two
in the middle.
Note 3: Use wall plugs, if necessary.
180
280
230
31.5
41.5
50
to edge of
dimmer
module
41.5
Note: All dimensions in mm
50
50
50
clearancefor
ventilation

Digidim 458 Dimmer Installation Guide Helvar Ltd.
Doc. No. 7860186 Page 3 Issue 1 (10/7/2008)
Step 3 Electrical Installation
WARNING: BEFORE COMMENCING ANY ELECTRICAL WORK, ISOLATE THE
ELECTRICITY SUPPLY AT THE MAIN DISTRIBUTION BOARD.
Mains Supply Voltage Range
The dimmer is designed for use with the following voltage range:
85 to 264 VAC (absolute); 110 VAC / 230 VAC (nominal).
Mains Supply Protection
The mains supply input must be externally protected by an MCB or fuse of a suitable
rating.
WARNING: THE SUPPLY INPUT MUST ONLY BE CONNECTED TO A SINGLE-
PHASE SUPPLY. THE SUPPLY INPUT EARTH MUST BE CONNECTED.
Using Spring-Lever Cage Clamp Terminals
Note: The supply earth, supply neutral and output terminals are spring-lever cage
clamp terminals.
1. Insert a screwdriver as far as it will go into the terminal release point.
2. Lever the screwdriver back. This opens the cage clamp. (For output terminals,
levering the screwdriver back is unnecessary).
3. With the cage clamp open, cable can be inserted or removed from the terminal.
4. Release the pressure on the screwdriver and then remove it. This closes the cage
clamp. If you have inserted a cable, check that the connection is secure.

Digidim 458 Dimmer Installation Guide Helvar Ltd.
Doc. No. 7860186 Page 4 Issue 1 (10/7/2008)
3.1. Connect the Mains Supply Input
Connect the mains supply input to the MCB and earth and neutral terminals, as shown
in the diagram below.
3.2. Connect the Loads
Connect the loads to the output terminals, as shown below.
SUPPLY EARTH
SUPPLY LIVE
Miniature Circuit Breakers (MCBs)
MAINS SUPPLY INPUT
SUPPLY NEUTRAL
EARTH
OUTPUT TERMINALS
NEUTRAL
OUTPUTS
LIVE
OUTPUTS
54321
Dimmed
Load
6
7
8
Copper Bus Bar
(live supply to all channels)

Digidim 458 Dimmer Installation Guide Helvar Ltd.
Doc. No. 7860186 Page 5 Issue 1 (10/7/2008)
Step 4 Attach Module and Make Connections
WARNING: BEFORE ATTACHING THE MODULE AND MAKING ANY
CONNECTIONS, ENSURE THAT THE MAINS SUPPLY IS STILL ISOLATED.
Re-assemble the dimmer module to the chassis before making any connections.
4.1. Connect Module Supply and Dimmer Channels
1. Remove the cables from the bypass terminals and connect them to the channel
terminals.
(Ensure that the terminal numbers correspond to the channels numbers).
2. Connect the supply to the module.
Note: The bypass terminals allow operation and testing of the lights and installation
wiring. The supply cable is supplied disconnected.
7
6
5
4
3
2
1
L
8
Channel Output
Channel Input
N
Dimmer Channels 1 - 8
Bypass
connection
terminals
Dimmer mains
supply terminal
Use cable sleeving over these signal wires
Options module
connection socket

Digidim 458 Dimmer Installation Guide Helvar Ltd.
Doc. No. 7860186 Page 6 Issue 1 (10/7/2008)
4.2. Make Necessary Control Connections
DALI
SDIM
Link for
termination
Close for
Override
Link for DALI
power
SCN 0V ATERM B DA+ DA-
Touch
Panel Power
0V
- /OVR +
Power
Link
Override
+
The dimmer may be controlled by either DALI or S-DIM, but DO NOT CONNECT
BOTH AT THE SAME THE TIME.
Note: Use the cable sleeving (supplied) to provide an extra layer of insulation
between the S-DIM, TouchPanel and Override low voltage signal wires and
other wiring.
S-DIM
If connecting to an Imagine system, connect to the S-DIM terminals.
If the dimmer is at the end of the S-DIM cable, wire between the ‘TERM’ and ‘B’
connections of the S-DIM terminals to enable the cable termination.
TouchPanel
You can supply one TouchPanel from the TouchPanel power connection terminal.
Override
If you wish to provide output level override functionality, wire between the ‘–/0V’ and
‘OVR’ connections of the override input connection terminal. This sets the light output
of all dimmer channels to the override level (the default is 100%, but can be changed).
DALI
If connecting to a Digidim system, use the DALI connector.
If the built-in 250mA DALI power supply is required, wire between the ‘+’ and
‘Power Link’ terminals of the DALI connector to provide DALI power.
REMEMBER THAT YOU CANNOT EXCEED THE DALI POWER SUPPLY OF 250 mA.
4.3. Check Connections
Check that all the necessary connections have been made correctly and securely
Step 5 Replace Cover & Power Up the Unit
1. Replace the cover using the original screws. (Screw size = M4x6).
2. Power up the dimmer unit by switching on the MCBs.
3. Check that the display screen lights up and the dimmer channel levels appear.

Digidim 458 Dimmer Installation Guide Helvar Ltd.
Doc. No. 7860186 Page 7 Issue 1 (10/7/2008)
Step 6 Set SDIM Addresses
If the dimmer is connected to a system through its SDIM connection terminal, the
SDIM addresses must be set as follows:
Display Procedure
Upon power up of the unit, the LCD
‘Display Screen’ appears.
Access Addresses Menu
From the Control Panel of the dimmer module:
1) Press on the keypad to access ‘Main Menu’.
2) In ‘Main Menu’, with the arrow pointing at
‘Addresses’,
press .
The ‘Addresses’ menu appears, listing
the addresses for S-DIM and DALI.
Set SDIM base address
1) At ‘Set SDIM base’, press .
2) Press or to select a base address
and press to enter.
3) Press to return to ‘Addresses’ menu.
Note: The base address is the first channel address,
from which the remaining addresses follow
consecutively (unless changed manually in the ‘SDIM
address’ sub-menu, see procedure below).
Set SDIM addresses (optional)
If you wish to set the addresses individually:
1) Press ‘down’ to select ‘SDIM addresses’ and press
.
2) Press or to select a channel and
press to enter.
3) Press or to select an address and
press to enter.
4) Press and hold to return to ‘Main Menu’.
The S-DIM addresses are now set and the unit is operational.
- ADDRESSES -
Set SDIM base
SDIM address
- ADDRESSES -
Set SDIM base
SDIM address
- MAIN MENU -
Addresses
About product
12345678
Dimmer

Digidim 458 Dimmer Installation Guide Helvar Ltd.
Doc. No. 7860186 Page 8 Issue 1 (10/7/2008)
Technical Data
Mains supply voltage: 85 VAC to 264 VAC
Supply frequency:
Protection:
45 Hz to 65 Hz
4 of 10 A MCBs for loads, 4 A MCB and PTC for control board (MCB
type C 10 kA)
Output regulation:
Supply current:
Nominal load:
DALI Supply:
TouchPanel Supply:
Automatic compensation for supply voltage and frequency variations
40 A (max)
8x5 A or 4x10 A loads
250 mA (max), 16 VDC (nominal)
250 mA (max), 16 VDC (nominal)
Conformity & Standards
EMC – Emission:
Immunity:
Safety – Safety:
Isolation:
IP rating:
Data transfer requirements
– DALI:
– S-DIM:
Environmental:
EN 55015
EN 61547
EN 60950
4 kV
20
EN 60929
Helvar protocol (RS485, 115 kbps)
Complies with WEEE and RoHS
Power consumption (excluding loads):
Thermal protection:
Installation:
1.3 W (with no DALI or TouchPanel PSUs used)
Control board – resettable fuse, power devices – thermal sensing
Vertically-mounted using four 4.5 mm mounting holes
Weight:
Dimensions (in mm):
Operating conditions
Temperature range:
Humidity:
11 kg
363 (L) x 311 (W) x 178 (D)
Storage temp. -10ºC to 70ºC
Ambient operating temp. 0ºC to 40ºC
90% max. (no condensation)
Cable Requirements
Note: DALI cable must be mains-rated and the maximum voltage drop along the
length of the cable must not exceed 2V.
Connection Cable Type Cable Length
Dimmer Mains Supply Solid core up to 10 mm
2
,
stranded up to 10 mm
2
N/A
Dimmer Channel Outputs Solid core up to 4 mm
2
,
stranded up to 2.5 mm
2
N/A
DALI 1.0 mm
2
to 1.5 mm
2
(recommended)
Note: Supply output 250 mA (nom)
max. 300 m
@ 1.5 mm
2
S-DIM Low loss RS485 type; multi-stranded,
twisted and shielded; 3 or 4 core plus
screen; 0.22 to 1.5mm
2
Recommended: one or two twisted pairs
(screened and earthed) e.g. ‘Belden 8102’
max. 1000 m
(without
repeater)
Override Screened, twisted pair, 0.5 mm
2
to 1.5 mm
2
max. 50 m

Helvar Ltd
Hawley Mill
Hawley Road
Dartford, Kent DA2 7SY, UK
Tel: [phone]
Fax: [phone]
www.helvar.com
8-Channel Dimmer
Product: 458
Doc No. 7860186
Issue 1
Date: 10/07/2008