INSTALLATION & USER GUIDE

INSTALLATION & USER GUIDE Digidim 458 8-Channel Dimmer STEP 1 Assemble Dimmer Unit STEP 2 Mount Dimmer Chassis STEP 3 Electrical Installation STEP 4 Attach Module and Make Connections STEP 5 Replace Cover & Power Up Unit STEP 6 Control Configuration READY FOR USE

Contents Overview...1 Technical Data...1 Specifications...1 Dimensions...2 Cable Requirements...2 Step 1 Mount Chassis...3 1.1. Remove Cover...3 1.2. Mounting Requirements...3 1.3. Mounting Procedure...4 Step 2 Electrical Installation...5 2.1. Connect the Mains Supply Input...6 2.2. Connect the Loads...6 Step 3 Attach Module and Make Connections...8 3.1. Attach Dimmer Module to Chassis...8 3.2. Connect Module Supply and Dimmer Channels...9 3.3. Make Necessary Control Connections...10 3.4. Check connections...10 Step 4 Replace Cover and Power Up the Unit...10 Step 5 Control Configuration...11 Control Panel Overview...11 Control Panel Functions...12 Doc. No. 7860182 Page i Issue 2 (27/5/2009)

Overview The 458 is an 8-channel digital thyristor dimmer. It has DALI and S-DIM interfaces, therefore can be fully integrated into Digidim and Imagine router systems. NOTE: DALI AND S-DIM MUST NOT BE CONNECTED SIMULTANEOUSLY. Its total current capacity is 40 A, which can be configured as 8x5 A channels or 4x10 A channels. There are two channels connected to each of the four 10 A MCBs, and the pair of channels connected to each MCB must not total more than 10 A. It provides an auxiliary power supply, which can be used to power one TouchPanel, and has an optional Digidim power supply, which can be used to power DALI systems, if required. Technical Data Specifications Mains supply voltage: Supply frequency: Protection: Output regulation: Supply current: Nominal load: DALI Supply: Touch\Panel Supply: Conformity & Standards EMC Emission: Immunity: Safety Safety: Isolation: IP rating: Data transfer requirements DALI: S-DIM: Environmental: Power consumption (excluding loads): Thermal protection: Installation: Weight: Dimensions (in mm): Operating conditions Temperature range: Humidity: 85 VAC to 264 VAC 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) 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) EN 55015 EN 61547 EN 60950 4 kv 20 EN 60929 Helvar protocol (RS485, 115 kbps) Complies with WEEE and RoHS 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 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) Doc. No. 7860182 Page 1 Issue 2 (27/5/2009)

Dimensions 311 363 178 All dimensions in mm Figure 1: Dimensions of Dimmer Unit Cable Requirements 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 Dimmer Channel Outputs Solid core up to 4 mm 2, stranded up to 2.5 mm 2 N/A N/A DALI S-DIM 1.0 mm 2 to 1.5 mm 2 (recommended) Supply output 250 ma (nom) 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. 300 m @ 1.5 mm 2 max. 1000 m (without repeater) Override Screened, twisted pair, 0.5 mm 2 to 1.5 mm 2 max. 50 m Doc. No. 7860182 Page 2 Issue 2 (27/5/2009)

Step 1 Mount Chassis 1.1. Remove Cover 4) Unscrew and remove blanking plate 5) Remove knockouts 2) Remove screws to left of door 1) Open door and remove screws from inside door 3) Remove cover from chassis Figure 2: Remove Cover from Chassis Use the grommets provided to protect cabling entering the knockouts. 1.2. 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 (see Figure 1 for length and width of unit). 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. Doc. No. 7860182 Page 3 Issue 2 (27/5/2009)

1.3. Mounting Procedure Use 4 screws (not provided) to mount to the wall. (No.8 or No. 10 screws with a head diameter between 6 mm and 9 mm). 5 4 3 2 1 8 7 6 50 230 180 41.5 50 clearance for ventilation 280 50 to edge of dimmer module 41.5 50 31.5 All dimensions in mm Figure 4: Mounting Holes Note 1 Note 2: Note 3: Use the mounting holes located at the furthest corners of the chassis. 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. Use wall plugs, if necessary. Mounting hole Mounting screw Drop height = 7 mm Figure 5: Mounting Information Doc. No. 7860182 Page 4 Issue 2 (27/5/2009)

Step 2 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 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 (see Figure 6). 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. Figure 6: Cage Clamp Terminals Doc. No. 7860182 Page 5 Issue 2 (27/5/2009)

2.1. Connect the Mains Supply Input Connect the mains supply input to the MCB and earth and neutral terminals, as shown in Figure 7 below. 2.2. Connect the Loads Connect the loads to the output terminals, as shown in Figure 7 below. NEUT RAL OUTPUTS LIVE OUTPUTS EARTH Dimmed Load 5 4 3 2 1 OUT PUT TERMI NALS 8 7 6 SUPPLY NEUTRAL SUPPLY EARTH M A I N S S U P P L Y I N P U T SUPPLY LIVE Copper Bus Bar (live supply to all channels) Miniature Circuit Breakers (MCBs) Figure 7: Output Terminals and MCB Wiring Details Doc. No. 7860182 Page 6 Issue 2 (27/5/2009)

Load Types The 458 is a thyristor dimmer and can control most load types including: incandescent lamps; low-voltage halogen lamps with conventional and dimmable electronic transformers; mains halogen lamps; and neon lamps with conventional and dimmable electronic transformers. The table below shows the compatible load types and the minimum and maximum power per channel. This table should be used as a guide only. Always refer to the manufacturer s data for load capacities and dimming compliancy. Load Min. per channel Max. per channel (see note 3) Incandescent lamps / 230 V (mains) halogen lamps 25 W 2300 W Low-voltage tungsten halogen wire-wound transformer 50 VA 2300 VA (see notes 1 & 2) Dimmable cold cathode wire-wound transformer 50 VA 2300 VA Leading-edge electronic transformers for low voltage See notes 1 and 2 halogen lamps Leading-edge electronic transformers for See notes 1 and 2 dimmable cold cathode Note 1: Note 2: Note 3: Note 4: For other load types, refer to manufacturer s data. Transformers must be approved for dimming use by the transformer manufacturer. We recommend lamp loading of the transformer to no more than 80% of the nominal transformer power, unless otherwise specified by the transformer manufacturer. For example, a 500 VA transformer should not be loaded to more than 400 W of lamp load. In addition, the transformer has to be shortcircuit proof on the secondary side, or it must be equipped with thermal protection on the primary side. The thermal protection is to be non-resettable or manually resettable only. Maximum load for a pair of channels supplied from the same MCB is 10 A (2300 VA at 230 V supply voltage). Doc. No. 7860182 Page 7 Issue 2 (27/5/2009)

Step 3 Attach Module and Make Connections WARNING: BEFORE ATTACHING THE MODULE AND MAKING ANY CONNECTIONS, ENSURE THAT THE MAINS SUPPLY IS STILL ISOLATED. The dimmer may be controlled by either DALI or S-DIM, but DO NOT CONNECT BOTH AT THE SAME THE TIME. 3.1. Attach Dimmer Module to Chassis 1. Partially unscrew the two knobs on the module to reveal the pins. 2. Attach the module to the chassis by slotting the pins of the module to the mounting bracket. 3. Screw the knobs to the mounting bracket to secure the module. Module mounting bracket Unscrew knobs Figure 3: Attach Dimmer Module Doc. No. 7860182 Page 8 Issue 2 (27/5/2009)

3.2. Connect Module Supply and Dimmer Channels Remove the cables from the bypass terminals and connect them to the dimmer module mains supply and channel terminals. (The bypass terminals are in the same order as the terminals on the dimmer module). The bypass terminals allow operation and testing of the lights and installation wiring. The supply cable is supplied disconnected. Dimmer mains supply connector L N 1 2 Dimmer Channels 1-8 3 4 5 6 7 Bypass connectors SDIM Cable Loom 8 Channel Input Channel Output Options module connection socket Use cable sleeving over these signal wires Figure 8: Dimmer Module Supply Connections Doc. No. 7860182 Page 9 Issue 2 (27/5/2009)

3.3. Make Necessary Control Connections SDIM Touch Panel Power Override DALI Power TERM B SCN 0V A + -/ 0V OVR + Link DA+ DA- Link for termination Close for Override Link for DALI power Figure 9: Control Connections 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, plug-in the connector of the SDIM cable loom to the SDIM terminals. This is attached to the DIN-rail inside the chassis. Refer to the 458Mx Chassis Installation Guide for more details. If the dimmer is at the end of the S-DIM cable, wire a link 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 a switch between the /0V and OVR terminals of the SDIM connector. Switch closure sets the light output of all dimmer channels to the override level. DALI If connecting to a Digidim system, use the DA+ and DA- terminals of 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 (see Figure 9). REMEMBER THAT YOU CANNOT EXCEED THE DALI POWER SUPPLY OF 250mA. 3.4. Check connections Check that all the necessary connections have been made correctly and securely. Step 4 Replace Cover and 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 on the Control Panel lights up and the dimmer channel levels appear. Doc. No. 7860182 Page 10 Issue 2 (27/5/2009)

Step 5 Control Configuration Control Panel Overview The Control Panel is contained at the front of the dimmer unit. It consists of an LCD Display Screen and a 5-button keypad, situated below the screen. Various dimmer settings can be edited using the Control Panel. The requirements differ according to the type of system and/or the connection of the dimmer: S-DIM connection e.g. to 900 or 920 Routers, or to TouchPanel. Set the S-DIM addresses from the Control Panel; everything else is set using Designer or Workshop software, or TouchPanel DALI connection e.g. to 910 or 920 Routers. Set everything using Designer software DALI standalone connection using Toolbox Everything is programmed using Toolbox software DALI standalone connection Very basic scene storing set at the button panel. Other settings can be changed at the dimmer. Control Panel The Control Panel appears like this: Dimmer 12345678 Figure 10: Control Panel Doc. No. 7860182 Page 11 Issue 2 (27/5/2009)

LCD Display Screen The LCD Display Screen appears like this: Indicator to show that S-DIM activity or DALI power / activity is present Dimmer Option4 12345678 Figure 11: LCD Display Screen If Options Module is connected, then output channels are displayed 5-Button Keypad The 5-button keypad appears like this: Up button (scroll up) OK button (Access Main Menu and menu / sub-menu, and enter) Left button (Leave Main Menu and menu / submenu) Right button (Access dimmer channel levels) Down button (scroll down) Control Panel Functions Figure 12: 5-Button Keypad If S-DIM is connected and you change lighting levels or recall scenes on the Control Panel, then, after a short period of time, the levels revert to those being sent by the S-DIM master. Display Screen After 60 seconds of inactivity on the Control Panel, you are returned to the Display Screen automatically. S-DIM Activity and DALI Power / Activity Indicator The same indicator located at the top left-hand corner of the Display Screen is used to indicate S-DIM activity or DALI power / activity: For S-DIM it is normally off, and flashes on intermittently for S-DIM activity If DALI power is on, then the indicator is on and flashes off and on for DALI activity Changing Lighting Levels for Dimmer Channels Note 1: If the Options Module is connected, the dimmer channels are in switch mode (non-dim) by default. This means that the dimmer channels will only turn on or off, they will not dim. For example, (for DALI) if you set a dimmer channel level to 1%, the channel turns on to 100%, and if you set it to 0%, it turns off; (for S-DIM) if you set a dimmer channel level to 2% (default switch-on level for S-DIM), the channel turns on to 100%, and if you set it to 1%, it turns off. This setting can be changed in the Dimming Curves sub-menu. Doc. No. 7860182 Page 12 Issue 2 (27/5/2009)

Note 2: If the 458/OPT4 Options Module is connected, then, by default, dimmer channels 1-4 are paired with outputs (options) 1-4. Changing the levels of dimmer channels 1-4 affects the levels of outputs 1-4, accordingly. Upon power up of the dimmer unit, the LCD Display Screen appears: 1. Press on keypad to access dimmer and output (option) channel levels. 2. Scroll ( or ) to desired channel (dimmer channel 1-8, option channel 1-4, or ALL). A bar or o (to indicate 0% light level) flashes underneath the channel number or all of the channels to indicate the channel at which you wish to set the level. 3. Press or to set required lighting level percentage (%) for that channel. 4. Press to de-select channel / all channels. Physical Selection One way to put the unit into Physical Selection mode, is to use the Remote Control Handset, with a Digidim control. Refer to the Digidim Lighting Control Designing, Specifying and Installing System Manual (doc. no. 7860038), section 5-7 Physical Selection, for more information. 1. Put the unit into physical selection mode e.g. by using the Remote control Handset. 2. From the Control Panel of the unit, press to access dimmer channel levels. 3. Scroll ( or ) to desired channel for physical selection. 4. Press or to physically select the channel. 5. Repeat step 3 and 4 for each channel, as necessary. 6. Use the handset to end Physical Selection mode. Main Menu The Main Menu contains functionality relating to how the dimmer controls your lighting system. It also contains general technical information about the dimmer and LCD display settings. Accessing Main Menu In Display Screen, press to access Main Menu. Press to leave Main Menu and return to Display Screen. Doc. No. 7860182 Page 13 Issue 2 (27/5/2009)

MAIN MENU Addresses... Option... Figure 13: Main Menu The Main Menu comprises menus for configuring the lighting settings for the dimmer channels. Press or to point the arrow to the menu you desire, and then press to access the menu. Addresses The digital interface (DALI or S-DIM) receives control messages from devices in the system. You can set any address to any channel. The base address is the first channel address, from which the remaining addresses follow consecutively (unless changed manually in the address sub-menu). In Main Menu, with the arrow pointing at Addresses, press. The Addresses menu appears, listing the addresses for S-DIM and DALI. ADDRESSES Set SDIM base SDIM address Figure 14: Addresses Set SDIM base address 1. With the arrow pointing at Set SDIM base, press. 2. Press or to select a base address and press to enter. 3. Press to return to Addresses menu. Set SDIM addresses If you wish to set the S-DIM addresses individually: 1. Press 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 to return to Addresses menu. Doc. No. 7860182 Page 14 Issue 2 (27/5/2009)

Set DALI base address 1. Press to select Set DALI base and press. 2. Press or to select a base address and press to enter. 3. Press to return to Addresses menu. Set DALI addresses If you wish to set the DALI addresses individually: 1. Press to select DALI 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 until you return to Main Menu. Options This menu allows you to configure the 458/OPT4 Options Module. You can only configure these settings if there is an Options Module connected. OPTION About option Channel pairs Figure 15: Options configuration About option 1. Press and then to access Option. 2. To view information about the Options Module, with the arrow pointing at About option, press. 3. Press to return to Option menu. Channel pairs 1. Press to select Channel pairs and press. Doc. No. 7860182 Page 15 Issue 2 (27/5/2009)

2. Press or to select an option (output) channel to pair with a dimmer channel, and then press. 3. Press or to select the desired dimmer channel with which to pair, and then press. 4. Press to return to Option menu. Output mode 1. Press to select Ouput mode and press. 2. Press or to select an option channel (or ALL option channels) with which to set the output mode, and then press. 3. Press or to select an output mode, and then press. 4. Press until you return to Main Menu. About Dimmer This menu contains general technical data about the dimmer. About this 458 Serial: 1234 Version: 1.1 À It contains the following information: Serial and version number Figure 16: About dimmer Firmware version, and date and time installed Heatsink and internal temperatures Mains supply voltage and frequency Whether DALI or S-DIM is connected (DALI or SDIM appears in the Comms mode field). If DALI power is on, a tick appears next to the DALI power field. If DALI communication is happening, DALI flashes in the DATA field. If S-DIM communications is happening, SDIM flashes in the DATA field. 1. Press and then to access About dimmer. 2. Press to view more data on screen, and repeat until you view all data, if necessary. 3. Press to return to Main Menu. Doc. No. 7860182 Page 16 Issue 2 (27/5/2009)

Recall Scene This menu is used to recall scenes which you have stored. RECALL SCENE Select & press 1À Figure 17: Recall Scene 1. Press and then to access Recall Scene. 2. Press or to select a stored scene (1-16). 3. Press to recall scene. The lighting settings for that scene are applied to the dimmer channels. 4. Press to return to Main Menu. Save as Scene Scenes are sets of lighting levels and can make use of any combination of channels. This menu allows you to configure up to 16 scenes. SAVE AS SCENE Select & press 1À Figure 18: Store Scene 1. Press and then to access Save as Scene. 2. Press or to enter a scene number (1-16) for your current settings. 3. Press to store scene. The levels which are currently active for all channels of the dimmer are applied to this scene. You can recall stored scenes in the Recall Scene menu (see above). 4. Press to return to Main Menu. Default Scenes Default lighting scenes can be applied to the dimmer channels i.e. scene 1 = 100%, scene 2 = 75%, scene 3 = 50%, scene 4 = 25% and scene 15 = 0%. Doc. No. 7860182 Page 17 Issue 2 (27/5/2009)

Lighting levels are NOT changed automatically once you apply default scenes; but once you recall a scene, lighting is set to the levels for that scene. DEFAULT SCENES Confirm = X = Figure 19: Default scenes 1. Press and then to access Default scenes. 2. Press to set default scene settings (or to cancel and return to Main Menu ). 3. If you pressed to accept default scenes, then press to return to Main Menu. Groups You can assign channels to groups, and any channel can be assigned to any group. Grp 1À 12345678 Dimmer XX X XX Figure 20: Groups 1. Press and then to access Groups. 2. Select Group (1-16) by pressing or. 3. Once you have chosen group to which to assign dimmer channels, press. 4. Press or to select channel and then press to assign channel. (Press to de-assign channel). Repeat for each channel, as required. 5. Press to store channel assignment. Go to another group to which to assign channels, if required, and repeat the procedure. 6. Press to return to Main Menu. Doc. No. 7860182 Page 18 Issue 2 (27/5/2009)

Dimming Curves This menu allows you to configure the shape of the dimming curve to suit the requirements of your lighting equipment. DIMMING CURVES Channel 3À Linear 1 Figure 21: Dimming curves 1. Press and then to access Dimming curves. 2. Press or to select channel and then on desired channel. 3. Press or to input shape of dimming curve (select from Linear, Square or S-Law). 4. Press to enter settings. You are returned to the channel assignment. (Repeat steps 2 to 4 for each channel, if required). 5. Press to return to Main Menu. Minimum Fade Time This menu allows you to set the minimum time it takes for lighting levels to change from one scene to another. MIN FADE TIME Channel 3À 1 sec 3 Figure 22: Min. fade time 1. Press and then to access Min fade time. 2. Press or to select channel and then on desired channel. 3. Press or to choose fade time. There are four options: 1 second, 500ms, 150ms, or 20ms. 4. Press to enter desired fade time. 5. Press to return to Main Menu. Doc. No. 7860182 Page 19 Issue 2 (27/5/2009)

Power On Level This menu allows you to set the level each channel will go to upon powering the unit, when DALI is connected. Power-on levels for S-DIM are set in the router or TouchPanel. POWER ON LEVEL Channel 3À Level LAST Figure 23: Power on level 1. Press and then to access Power on level. 2. Press or to select channel and then on desired channel. 3. Press or to select power on level (0-100% or LAST for last level set before switch off). 4. Press to enter settings. 5. Press to return to Main Menu. Failure Level This menu can be used to set channel levels for situations where the DALI bus goes low, such as when it is short-circuited or the DALI PSU is turned off. FAILURE LEVEL Channel 3À Level 1OO% Figure 24: Failure level 1. Press and then to access Failure level. 2. Press or to select channel and then on desired channel. 3. Press or to select failure level (0-100%). 4. Press to enter settings. 5. Press to return to Main Menu. Doc. No. 7860182 Page 20 Issue 2 (27/5/2009)

Override Level If the override input connection is short-circuited, e.g. by contact closure on an alarm system, all channels are set to their override level, regardless of other settings or control inputs. OVERRIDE LEVEL Channel 3 Level 1OO% Figure 25: Override level 1. Press and then to access Override level. 2. Press or to select channel and then on desired channel. 3. Press or to select override level (0-100%). 4. Press to enter settings. 5. Press to return to Main Menu. Minimum Level This menu allows you to set the minimum lighting level that the channel will achieve, no matter what scene is called or level is set. For example, if you set a minimum level of 50% and call scene 4 (at 25% level), the channel output level will be 50%. For S-DIM, it is more complex than this. The level set here is actually the switch on level, and the channel will not turn on unless it receives a command to go at or above this level. See Hysteresis section, on the next page. The minimum level is 1% by default. If you set both minimum and maximum levels to 100%, then this forces the dimming curve into switch mode. MINIMUM LEVEL Channel 3À Level 1% Figure 26: Minimum level 1. Press and then to access Minimum level. 2. Press or to select channel and then on desired channel. 3. Press or to select minimum level (0-100%). 4. Press to enter settings. Doc. No. 7860182 Page 21 Issue 2 (27/5/2009)

5. Press to return to Main Menu. Maximum Level This menu allows you to limit the maximum output level of each channel. You can set the maximum level to be between 50% and 100%. The maximum level is 100% by default. If you set both maximum and minimum levels to 100%, then this forces the dimming curve into switch mode. MAXIMUM LEVEL Channel 3À Level 1OO% Figure 27: Maximum level 1. Press and then to access Maximum level. 2. Press or to select channel and then on desired channel. 3. Press or to select maximum level (0-100%). 4. Press to enter settings. 5. Press to return to Main Menu. Hysteresis Hysteresis is only supported when controlled by S-DIM. This menu is used to affect the level at which the channel turns off. When hysteresis is on, the switch off level is 80% of the switch on level. At or below the switch off level, the channel will be off. For example, if the switch on level is 50%, and the signal rises to this level or above to turn the channel on, then if the signal falls to 40% or below, the channel turns off. By default on the dimmer: When hysteresis is on and the signal rises to 2%, the lighting for that channel turns on; when it falls to 0%, the channel turns off. When hysteresis is off and the signal rises to 2%, the lighting for that channel turns on; when it falls to 1%, the channel turns off. Hysteresis is off by default and the switch on level is set in the Minimum Level menu of the Control Panel (or set at the router). HYSTERESIS Channel Off 3À X Figure 28: Hysteresis Doc. No. 7860182 Page 22 Issue 2 (27/5/2009)

1. Press and then to access Hysteresis. 2. Press or to select channel and then on desired channel. 3. Press to turn on (or to turn off) hysteresis. 4. Press to enter settings. 5. Press to return to Main Menu. LCD Contrast This menu allows you to change the contrast for the LCD Display Screen. LCD CONTRAST Select & press 5O%À Figure 30: LCD contrast 1. Press and then to access LCD contrast. 2. Press or to set contrast level (0-100%) for the LCD Display Screen. 3. Press to enter settings. 4. Press to return to Main Menu. LCD Timeout When the LCD timeout is on, after 90 seconds of inactivity on the Control Panel, the back-light on the LCD Display Screen turns off and the Control Panel is then in standby mode. The LCD timeout is on by default. LCD TIMEOUT Select & press À Figure 31: LCD timeout 1. Press and then to access LCD timeout. 2. Press to turn off (or to turn on) timeout for the Display Screen. Doc. No. 7860182 Page 23 Issue 2 (27/5/2009)

3. Press to enter settings. 4. Press to return to Main Menu. Factory Reset This menu is used to reset the dimmer to the original settings (defaults). Restoring factory defaults restores the original settings, therefore all lighting is returned to default levels immediately. FACTORY RESET Confirm = X = Figure 32: Factory reset 1. Press and then to access Factory reset. A warning message appears, stating that this action will default all settings. 2. Press and hold until the status bar reaches the end to restore factory settings (or to cancel and return to Main Menu ). 3. If you restored default settings, then press to return to Main Menu. Use password The password is disabled by default. You can use the factory-set password for the dimmer unit. PASSWORD = 58. If the password is enabled, you must enter the correct password, otherwise you can only use the following functions / menus: Change dimmer levels Access technical information about the dimmer Recall a scene Enter the password Use password disables the functionality of the rest of the menus. You can access the menus but cannot change any settings, unless you enter the password. A lock key ( ) is displayed in the bottom right of the screen when you enter the menu, to indicate that you cannot enter any settings. USE PASSWORD Select & press X Figure 33: Use password Doc. No. 7860182 Page 24 Issue 2 (27/5/2009)

1. Press and then to access Use password. 2. Press to display a tick, indicating to use password. (Press to display a cross, indicating to not use password). 3. Press. 4. Press to return to Main Menu. If you chose to use the password, after 1 minute of inactivity, the Control Panel goes to standby and the Enter password menu appears in Main Menu. Enter Password If the password is enabled and you wish to use all of the functions of the dimmer, you must enter the correct password. To enter the password: 1. Press to enter Main Menu. 2. Press and then to access Enter password. 3. Press until the correct password number is displayed, then to enter that number as the password. You are returned to Main Menu. You have now configured the necessary settings for your lighting system, and the unit is ready for use. Doc. No. 7860182 Page 25 Issue 2 (27/5/2009)

Diagnostics When an error occurs, a flashing message appears at the top of the LCD display screen, which gives you some indication as to what the problem is. The table below shows you these error messages and their meanings: Message Reason Output Trip Comments Too Hot!! Mains Freq No Mains ZC Output limiting due to heatsink or internal temperature Reduces - Mains frequency outside limits Off - No zero crossings observed (informative after Mains Freq trip) Off - Preceeds Temperature trip, > 80 degrees C Frequency is < 45Hz or > 65Hz Caused by analogue optocoupler failure Mains High Mains voltage too high Off - > 276 volts RMS Mains Low Mains voltage too low Off - < 70 volts RMS Temperature EngineFault Thermometer Override On Comms Error Dimmer has reached or exceeded the trip temperature Off Resettable Reset from front panel. > 90 degrees C. Voltage measurement bias level failed on powerup Off Latched Unit must be power cycled Temperature sensor failed Off Latched Override input pulled low Override Level - SDIM communications error e.g. two units with the same address - - N/A Read < -30 degrees C. Unit must be power cycled User can change override levels on-the-fly (unless locked) Doc. No. 7860182 Page 26 Issue 2 (27/5/2009)