Single-Channel Leading Edge Dimmer (416S & 425S)
The DIGIDIM 416S (16 A) and 425S (25 A) are wall‑mounted, single-channel, leading edge (thyristor) dimmers. Both units include a 16 A relay circuit.
Controllable by SDIM, DMX and Analogue, and DALI‑compatible for use as load interface units in a DIGIDIM lighting control system, the 416S and 425S can also function as standalone dimmers.
They can be connected to mains voltage lamps directly, or to low voltage lamps via a wire-wound transformer, and have a selectable, integral DALI power supply
Key Features
- Out-of-box operation. No programming required when using DIGIDIM slider, rotary or push button panels.
- Input voltage fluctuation compensation ensures stable output levels with fluctuating incoming mains levels.
- Selectable, integral DALI power supply.
- Over-temperature protection.
- Programmable interface with buttons and LED display.
- Programmable in Designer™ and DIGIDIM Toolbox™.
Technical Data
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Connections
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Power consumption:
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1.3 W (with no output load)
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Heat dissipation:
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416S: 39 W with maximum load (resistive); 425S: 67 W with maximum load (resistive)
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External protection:
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The mains supply input must be externally protected by an MCB or fuse of a suitable rating. 416S: 16 A Type C MCB maximum425S: 25 A Type C MCB maximum
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Thermal protection:
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Control board – resettable fusePower devices – thermal sensing
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Mains supply input
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Connections (L, N, E):
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Solid ≥ 6 mm², stranded ≥ 4 mm²
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Terminal type:
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Screw terminals
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Mains power supply:
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100 VAC – 240 VAC (nominal)85 VAC – 264 VAC (absolute)45 Hz – 65 Hz
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Cable strip length:
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8 mm
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Control inputs
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DALI connections:
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1 × DALI (standard, nonpowered),1 × DALI powered (83 mA).DIGIDIM terminal block (one supplied with unit)
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Cable type and size:
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0.5 mm² – 1.5 mm² stranded or solid
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Cable strip length:
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6 mm
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DALI consumption:
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2 mA
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DALI supply output:
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Powered DALI: 83 mA (max.), 20 VDC (nominal)
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DALI data transfer:
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DALI standard IEC62386, with Helvar extensions
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SDIM/DMX inputs
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Connections:
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SDIM and DMX use the same input connections
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Terminal type:
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Screw terminals
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Cable type and size:
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0.22 mm² – 1.5 mm² low-loss RS485 Type (multistranded, twisted and shielded).One twisted pair for A and B (85 Ω to 100 Ω impedance), one core or twisted pair for 0 V, and shield for screen. Example: Belden 8102 or Alpha 6222C.
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Cable strip length:
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6 mm
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Max. cable length:
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100 m (low-loss cable)
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SDIM data transfer:
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Helvar protocal (RS485, 115 kbps)
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DMX data transfer:
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DMX512-A protocol
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Analogue input
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Terminal type:
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Screw terminals
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Cable type and size:
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2-wire, 0.22 mm² – 1.5 mm² (screened and twisted)
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Max. cable length:
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50 m
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Override input
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Terminal type:
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Screw terminals
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Cable type and size:
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2-wire, 0.22 mm² – 1.5 mm² (screened and twisted)
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Cable strip length:
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6 mm
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Max. cable length:
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50 m
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Voltage and current:
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Input voltage: Vin < 1.5 V; short-circuit current Ishort = 1 mA
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Load outputs
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Terminal type:
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Screw terminals
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Cable type and size:
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Solid ≥ 6 mm², stranded ≥ 4 mm²
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Cable strip length:
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8 mm
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Relay output (switched load output)
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Terminal type:
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Screw terminals
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Cable type and size:
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Solid ≥ 6 mm², stranded ≥ 4 mm²
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Cable strip length:
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8 mm
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Load current:
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416S: 16 A; 425S: 16 A
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Relay contacts:
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High inrush
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Mechanical data
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Dimensions:
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200 mm × 274 mm × 104 mm
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Material:
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Powder coated steel (grey)
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Mounting:
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Vertical mounted, secured by four ‘keyhole slots’
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Weight:
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416S: 2 kg; 425S: 2.6 kg
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IP code:
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IP20
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Operating conditions
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Ambient temperature:
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0 °C to +40 °C
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Relative humidity:
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Max. 90 %, noncondensing
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Storage temperature:
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–10 °C to +70 °C
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Conformity and standards
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EMC emission:
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EN 55015
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EMC immunity:
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EN 61547
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Harmonics:
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EN 61000-3-2*
* Professional equipment.Total rated power > 1 kW.
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Safety:
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EN 61347-2-11
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Environment:
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Complies with WEEE and RoHS directives
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