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Installation & Operation Guide
incandescent load of 100 to 200 watts added to help absorb the reflected energy. Failure to take these precautions may
result in damage to the dimming electronics or dimmer.
Also, for best results, increase the neon transformer voltage 50% over the normal requirements for the selected length
and diameter of the tube. Use only Low Power Factor (without power factor compensation), current limiting, high-
voltage transformers. Mount the transformer with the lamp it operates. This will increase lamp stability and dimming
range. Neon tubes must be pumped for a hard vacuum to minimize impurities in the lamp to insure flicker-free
operation at low light levels.
LED Line-Voltage Fixtures
eS21 LED Raceways offer a dedicated dimming option for line-voltage LED fixtures. LED fixtures that require a
locked reverse-phase control dimming curve is available through the LCD menu system. Refer to
CONFIG (Dimmer Module configuration, user-selectable options)" on page 18
dimming mode.
Non-Dim Operation
When set for Non-dim operation, the eS21 dimmers bypass the dimming modes mentioned above, and simply
switches into full conduction. Normal overload protection is still active, but the dimmer does not attempt to regulate
its output voltage. Non-dim mode is intended to control small motors and fans such as those found in color scrollers
and scenic projectors.
WARNING! eS21 dimmers, in non-dim mode, are not designed to run automated luminaires, large loads, or flash
pots. Damage to the dimmer or attached equipment may occur.
5.
Dimmer Protection
eS21 dimmer can detect an overload in several ways:
1) By calculating the load size from the measured voltage and current. This protects the dimmer from mis-
sized loads, such as connecting more than its rated wattage to a single dual dimmer module.
2) By the hardware current limiter shutting down the dimmers output. This protects the dimmer from
catastrophic faults like short circuits.
The Over-sized load threshold is about 35% above the nominal dimmer capacity. This gives enough latitude for lamp
manufacturing tolerances and load shift with temperature, yet still protects the dimmer from gross loading errors.
Once an overload has been detected, the dimmer spends about 5 seconds monitoring the load before deciding to shut
down. If the hardware current limit caused the fault, the load is monitored at extremely low voltages. If the fault has
not cleared at the end of this time, the dimmer shuts down and reports the error. Depending on the cause, the Status
Monitor will show either "Over-sized Load", or "Overload".
The load must be reduced to the correct size and the level must be reset to zero before the dimmer will resume normal
operation.
Thermal Protection
The portion of the eS21 dimmer output wave form which generates the most heat is the transition from on to off (off
to on for FPC). This portion is known as the transition time, and its duration directly affects the amount of heat
generated. The eS21 dimmer can control the duration of this portion of its output wave form and thus, to a certain
degree, its operating temperature.
If the dimmer is in its normal operating temperature range, it will use the longest transition time available is 1000µS .
Should its operating temperature reach 85° C (likely only if the ambient temperature is very high), it will
automatically select a shorter transition time to reduce the amount of heat generated. In many cases this will be
sufficient to stabilize the temperature. Should the temperature continue to rise, and reach 95° C, the dimmer will
completely shut down to prevent an over temperature failure. After an over temperature shut-down the temperature
must drop to 50° C and the level must be reset to zero to resume normal operation.
2 2
OPERATION AND PROGRAMMING
eS21 LED Raceway
"MOD/PORT
on how to set a dimmer to the LED
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