Installation & User Instructions

Installation & User Instructions 16/25A Digital Dimmer (416/425) INTRODUCTION The 416 and 425 are Digital Dimmers capable of dimming a single channel with total loads of up to 16A and 25A respectively. They are suitable for controlling a variety of light sources, including Incandescent Lamps, Halogen Lamps, 26 or 38mm Fluorescent Tubes or Cold Cathode Tubes. The dimmers are controlled by a digital signal, using the DALI (Digital Addressable Lighting Interface) protocol. For larger loads, it is simple to connect additional 416 and 425 dimmers using the same digital signal such that they operate together as one channel. 416 DIGITAL 16A DIMMER 230V-50/60Hz The unit is designed to work with any DALI compatible controller, this requirement is fully met by Helvar s DIGIDIM range of modular panel controllers. Theses products include: DIGIDIM push button range: 121, 2-button on/off; 122, 2-button modifier; 124, 5-button; 125, 5-button & modifier; 126-8 button; 170, IR receiver DIGIDIM sliders: 110, single slider; 111, double slider DIGIDIM 100, rotary The Helvar DIGIDIM modular panel range is available in several finishes, including satin white plastic, lacquered polished brass, and satin stainless steel. All the panels include IR receivers and can be used with an optional DIGIDIM IR remote controller handset. In addition, the 416 and 425 Dimmers are suitable for control by building management systems by either using the Helvar DIGIDIM LON-DALI Gateway product or the Helvar DIGIDIM Input Unit via remote relay control. TECHNICAL DATA General Overall Dimensions: Mounting: Nett Weight: Packaged Weight: 200mm (W) x 274mm (H) x 72mm (D) Vertical orientation, secured via four keyhole slots 2.2kg / 2.8kg* (nominal) 2.7kg / 3.3kg* (nominal) Supply Frequency: Supply Quality: 48-52Hz or 58-62Hz (switch set) All data is based on a pure sinusoidal mains supply (see Helvar document AL 702 006) Supply Filtering: Signals over 400 Hz are filtered Power Consumption: 7.5W (max) off-load (416/425) 44W / 72W* (max) on-load Terminal Details: Cable size up to 4mm² stranded or 6mm² solid Conformity & Standards EMC: EN 55015: 1996 EN 61547: 1996 Safety: EN 60950: 2000 IP rating: 300 Operating Conditions Storage Temperature: -10 to +70 C Operating Temperature: 0 to +35 C Thermal Protection: Transformer: resettable fuse Power devices: thermal sensing Relative Humidity: 90% (non-condensing) Mains Supply Input Supply Voltage: 230VAC (nominal); 180 264VAC (absolute), single phase Power Output Output Relay Rating: 16A / 25A* (single-pole) (Controls switched and dimmed outputs) Output Voltage Compensation: 3% variation with 10% supply variation Maximum Load Current: 16A / 25A* Power Factor of Load: Min. 0.5 inductive Overload & Short-Circuit Protection: External to product, maximum 16A/25A* (Preferred M.C.B. EN60 898 Type C) Current Rise Time: Typically 100µs at 90 firing into a tungsten load Terminal Details: Cable size up to 4mm² stranded or 6mm² solid DALI Supply Output: 240mA switchable (see note on Page 4) * Specification for 425 Document Ref. 7860011 22/03/01 ENGLISH Part No. 416/425 Issue 1 Page 1

PHYSICAL INSTALLATION Choosing a Suitable Location The 416 and 425 Digital Dimmers are designed to be mounted vertically. This criterion is especially important for the 425. The chosen mounting surface must be flat and the location must meet the following requirements: A clearance of at least 50mm on all sides is needed to allow for adequate ventilation. Under no circumstances must the grilles on the front panel be obstructed. These criteria are especially important for the 425 Sufficient clearance must be left above and below the unit to allow for the connection of cables, conduits or trunking and the operation of the DIGIDIM physical selection switch The ambient temperature must be within the range 0 C to 35 C, 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. Mounting is achieved by using the four keyhole fixing holes on the side flanges (see Figure 2). The fixing screws (not supplied) must be: Thread Ø <6mm (Smaller than the long slot of the fixing hole, see Figure 2) Head Ø <9mm (Large enough to clamp the flange securely) Mounting Procedure 1. Mark and drill four holes corresponding with the centre of the fixing holes. Note the 7mm drop-down clearance 2. Insert the screws and screw them in. Allow clearance for the thickness of the mounting flange 3. Align the centre of the flange fixing holes with the screws and mount the unit. Allow the slotted part of the holes to drop-down behind the screw heads (see Figure 3). If necessary, loosen the screws to ease this operation. 4. Tighten all four screws sufficiently to prevent the unit from being lifted away. Mounting flange 200mm Mounting screw < 9mm < 6mm PHYSICAL SELECTION SWITCH 185mm Drop height 7mm 416 Figure 3. Mounting Information DIGITAL 16A DIMMER 230V-50/60H z 187mm 274mm KEYHOLE SLOTS (4 off) for securing the unit Ø6.0mm Drop Height Ø9.0mm = 7mm CABLE ACCESS KNOCK-OUTS Figure 2. Overall dimensions and location of fixings Page 2

ELECTRICAL INSTALLATION Cable Access There are various knock-outs on the unit, as shown in Figure 2. These are located on one end panel, being suitable for 16mm, 20mm, and 25mm conduit fixings, or on the rear panel, where the gap created between the back of the dimmer case and the wall may be used for cable entry. All mains input, output and DALI cables must enter the dimmer case via the provided access points using the rubber grommet provided. LOAD TYPES LOAD RATING OF 416/425 (230V power supply) Incandescent lamps or 230 halogen lamps Low voltage halogen transformers (see notes 1, 2 &3)and dimmable cold cathode transformer Per 416 Per 425 Min. Max. Min. Max. 25W 3680W 100W 5750W 50VA 2576VA 200VA 4025VA Mains Supply Voltage Range The Dimmer Module is designed for use with the following voltage range and cannot be changed by the user: 230VAC (nominal); 180 264VAC (absolute) WARNING Electronic ballasts for 26 mm fluorescent tubes (see Note 4) Helvar EL 1x18FD Helvar EL 1x36/2x18FD Helvar EL 1x58FD Helvar EL 2x36FD Helvar EL 2x58FD Helvar EL 1x70FD Helvar EL 2x70FD 1 ballast 126 ballasts 7 47 36 23 36 19 4 ballasts 196 ballasts 110 73 56 35 56 29 THE MAINS INPUT MUST ONLY BE CONNECTED TO A SINGLE-PHASE SUPPLY. THE MAINS INPUT PROTECTIVE COVER (EARTH) MUST BE CONNECTED. Mains Supply Protection The mains input supply must be externally protected by an MCB or fuse of a suitable rating for the load circuit (maximum 16A for 416 or 25A for 425). It is recommended that this protection is local to the dimmer and clearly identified. Electronic ballasts for TC-L-lamps (see Note 4) Helvar EL 1x18FD2F Helvar EL 1x24FD2F HelvarEL1x36/2x18FD2F Helvar EL 2x24FD2F Helvar EL 2x36FD2F 1 ballast 126 ballasts 93 7 48 35 Preheat transformer for 38mm fluorescent tubes 20W 40W 65W 1 tube 43 tubes 35 22 4 ballasts 4 tubes 196 ballasts 145 110 75 5 67 tubes 5 3 Connecting the Mains Supply Input/Output WARNING BEFORE COMMENCING ANY ELECTRICAL WORK, ISOLATE THE MAINS SUPPLY AT THE MAIN DISTRIBUTION BOARD. To gain access to the various connection terminals, remove the front cover panel of the dimmer case (two securing screws, see Figure 2). Connect the supply input and the load as shown in Figure 4 below. Suitable cable type: Maximum core size: Stripping length: Solid or stranded 6mm² solid, or 4mm² stranded 8mm L IN NIN NOUT Dimming transformer for 26/38mm fluorescent tubes Note 1 Note 2 Note 3 Note 4 18/20W 36/40W 58/65W 1 tube 38 tubes 3 2 4 tubes 59 tubes 53 32 Wirewound or electronic transformers for low-voltage halogen lamps must be approved for dimming use by the transformer manufacturer. It is recommended that the lamp loading of the transformer is 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 400W. In addition, the transformer must be capable of enduring short-circuit resistance or be equipped with thermal protection on the primary side. The thermal protection must be of non-resettable type or manually resettable only. The rating applies to soft start with no switches in the dimmed phase circuit. If direct start is used or if switches are in the dimmed phase circuit, the transformer rating must be reduced by 40%. The earth leakage current of an electronic ballast is about 0.5mA. Due to harmonic currents, this can rise to 5.0mA/ ballast when dimmed. This has to be taken into account in those installations where used. For example, not more than six ballasts can be connected to one 30mA R.C.D. MAINS SUPPLY INPUT Figure 4. E SWITCHED DIMMED L LOAD LOAD LOAD CIRCUIT EARTH CONNECTIONS Mains input/output wiring details WARNING THE DIELECTRIC WITHSTAND SAFETY TEST MUST NOT BE APPLIED DIRECTLY BETWEEN THE PHASE AND NEUTRAL CONNECTIONS. TO TEST, LINK ALL PHASE AND NEUTRAL TERMINALS TOGETHER, INCLUDING THE DIMMER OUTPUT TERMINALS WHERE APPLICABLE, AND APPLY THE TEST VOLTAGE WITH RESPECT TO SAFETY EARTH. Page 3

CONTROL CONNECTIONS Physical Selection Switch A push button switch is located on the top end panel of the unit (see Figure 2 ). This is the physical selection switch and is only used when programming multi-channel systems. In a typical single channel installations the unit has been designed for out-of-box operation and the physical selection switch can be ignored. DALI Connections WARNING DALI CONNECTIONS CARRY BASIC INSULATION RATING ONLY AND MUST BE TREATED AS A LIVE CONNECTION. DIMMER CONTROLS CAUTION Before connecting or changing a Helvar Electrosonic FD ballast load, ensure that the Minimum Level Adjustment Control (MIN) is set to maximum and the Maximum Level Adjustment Control (MAX) is set to minimum (refer to Figure 5 ). To increase the MAX setting, measure the RMS voltage to the ballast and increase slowly until reaching the ballast specification. DO NOT OVER-VOLT THE BALLAST. To decrease the MIN setting, reduce slowly, allowing the lamps to stabilise, until the minimum stable lamp level is reached. DO NOT SET BELOW THE MINIMUM LIGHT SPECIFICATION OF THE BALLAST. DO NOT ALLOW LAMPS TO EXTINGUISH. Refer to the wiring diagrams shown in Figure 7.Toensure correct and reliable operation, be sure to observe the following points: Only use the specified cable type Do not exceed the maximum recommended cable length Avoid running control cables through electrically noisy environments, such as near other dimmer units. Cable Type: Max. Cable Length: DALI Power Supply Screened, multi-stranded, twisted pair 0.5 to 1.5mm 2 300m The unit incorporates a DALI power supply. This can supply up to 240mA, which is the maximum allowed by the standard in a DALI system. The power supply can be switched OFF by internal switches on the interface board (see Figure 7 ). The factory default is ON. NOTE The level adjustment controls can only be accessed when the cover is removed (see Figure 7 for their location). The maximum level can be adjusted within the range 72% to 98% of supply input. To match the DALI recommended response (see Figure 10), set the Maximum Level Adjustment (MAX) to maximum (fully clockwise) and the Minimum Level Adjustment (MIN) a quarter-turn clockwise as shown in Figure 5. MAX. LEVEL ADJUSTMENT minimum maximum MIN. LEVEL ADJUSTMENT minimum maximum Figure 5. DALI setting OPTION SWITCHES OFF All other load types Mains frequency 50Hz 50Hz EL 1/3 EL 5/7 TUNGSTEN 60Hz ON Pulse starts for EL-FD ballasts- 18W & 36W Pulse starts for EL-FD ballasts- 58W & 70W Tungsten soft-start Not more than one of these switches must be set to the ON position DALI control (factory setting, do not change) Mains frequency 60Hz Page 4

MAXIMUM LEVEL ADJUSTMENT MINIMUM LEVEL ADJUSTMENT SET-UP OPTION SWITCHES 1 2 3 4 5 6 7 ON OFF DALI DA+ SC DA- DALI PSU SWITCH POWER CONNECTIONS SC SC LIN N IN N OUT DA+ DA- DA+ DA- EARTH INPUT/OUTPUT LIVE INPUT NEUTRAL INPUT NEUTRAL LIVE OUTPUT OUTPUT (DIMMED) LIVE OUTPUT (SWITCHED) Figure 7. Terminal functions and locations Page 5

100 P(%) max. EL 1/3 Relative Power 80 60 40 min. 160V rms min. 140V rms 20 EL 5/7 min. 0 20 30 40 50 60 Ambient Temperature 70 T( o C) 1 2 3 Time t(s) Figure 8. Load power derating with ambient temperature Figure 9. Starting pulses 100.0% 90.0% 80.0% Max Dali Min 70.0% 60.0% Vrms 50.0% 40.0% ` 30.0% 20.0% 10.0% 0.0% 0 50 100 150 200 250 Direct level Figure 10. 416 and 425 dimmer output voltage vs. direct control level, incandescent load Page 6

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This page is intentionally left blank. 1997 HELVAR MERCA Ltd Part No. 416/425 Hawley Mill, Hawley Road, Dartford, Kent. DA2 7SY (U.K.) Document Ref. 7860011 Docu Tel: 01322 222211 Fax: 01322 282282 issue 1 (22/03/01) Page 8