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Adjustment knob for leading, trailing edge dimming and minimum dimming level
N= Neutral
L= Controlled voltage
S = Input for retractive switch (220-240V)
L = Phase
Note: MWMR-251 is a universal type dimmer.
To avoid damage to the receiver ithas to be set up for the type of load that is connected to it, see "Dimmer settings" for more information.
Devices that support Smart Mode can save up to 3 different favourite scenarios, and these can be activated easily using a Nexa Smart Mode transmitter.
Built-in dimmer for permanent installation. Small, compact size with input for a retractive switch (230V). Adjustable between leading edge dimming and trailing edge dimming, plus minimum dimmer level. The receiver needs both phase and neutral.
Read through the entire instruction first. Engage a professional if so required. Nexa cannot be held liable if the product is used for any purpose other than the one for which it is designed, or if there is failure to comply with the instruction.
Never connect bulbs or equipment exceeding the receiver's maximum stated load – this may lead to faults, short-circuiting or fire.
Do not attempt to repair the product. The product contains no repairable parts.
Make sure that the conductors are powered down by turning off the power in the distribution box.
Connect Phase to L, Charge/Bridgewire to L and Neutral conductor to N – see also the wiring diagram.
With X-Link & switch connected to S-input
Without X-Link
The LED indicator on the receiver flashes rapidly.
DELETING A MEMORY SLOT
CONFIRMATION OF DELETION
The LED indicator on the receiver flashes rapidly.
Every MWMR-251 receiver has 32 memory slots. When memory slot 32 is occupied, slot 1 is overwritten during programming.
MWMR-251 is supplied set for leading edge dimming and can be reset to trailing edge dimming.
Selection of an appropriate setting is dependent on the type of charge to be connected – see the table below.
Contact the place of purchase for your luminaire/light if you are not sure what type of load to be set.
LOAD | SETTING | OUTPUT |
Halogen lamps and bulbs | Trailing edge | 25-250W /220-240V W RL |
Electronic transformers | Trailing edge | 20-250W / 220-240V |
Dimmable LED and low-energy bulbs | Trailing edge | 3-120W / 220-240V |
Conventional transformers | Leading edge | 40-250W / 220-240V |
Rotate the adjustment knob to the "ON/OFF" position. The LED indicator flashes rapidly and the connected light is dimmed to the maximum level.
The receiver can be controlled in a number of ways.
A brief press on a retractive switch switches the connected charge on or off. Press and hold down the retractive switch to increase or reduce the dimming level.
Indoor range: up to 30 m (optimal conditions). The range is strongly dependent on local conditions, such as the presence of metals. For example, the thin metal coating in Low-emissivity (Low-E) glass has a negative impact on the range of radio signals. There may be restrictions on the use of this device outside the EU. If applicable, check whether this device complies with local directives.
Maximum load: Never connect lights or equipment that exceed the maximum load of the receiver, as it can result in defects, a short circuit or fire.
Life-support: Never use Nexa products for life-support systems or other applications in which equipment malfunctions can have lifethreatening consequences.
Interference: All wireless devices may be subject to interference, which could affect performance. The minimum distance between 2 receivers should be at least 50 cm.
Repairing: Do not attempt to repair this product. There are no userserviceable parts inside.
Water-resistance: This product is not water-resistant. Keep it dry. Moisture will corrode the inner electronics and can result in a short circuit, defects and shock hazard.
Cleaning: Use a dry cloth to clean this product. Do not use harsh chemicals, cleaning solvents, or strong detergents.
Environment: Do not expose the product to excessive heat or cold, as it can damage or shorten the life of electronic circuit boards.
MWMR-251 | |
Power supply | 220-240 V~50 Hz |
Max. load | 20–250 W R/RC / 40–250 W RL |
Max. load LED | 3–120 W LED |
Frequency | System Nexa (433,92 MHz) |
Range | up to 30 m |
Memory slots | 32 |
Power consumption | < 1 W (standby) |
IP rating | Indoor use |
Size | 40 x 45 x 15 mm |
Declaration of conformity is available at www.nexa.se
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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