8!
6 to 40 W Constant Current LED Drivers with!
Tri-Mode Dimming™ (TRIAC, ELV & 0-10 V)!
ESSV010!
ESSV015"
ESSV020!
ESSV030!
ESSV040!
6-10 W!
11-15 W!
16-20 W!
21-30 W!
31-40 W!
ESSV!
Series!
SaveEnergy@erp-power.com!www.erp-power.com!
11 - 0-10 V DIMMING!
The ESSV drivers operate only with 0-10V dimmers that sink current. They are not designed to operate with 0-10V control systems
that source current, as used in theatrical/entertainment systems. Developed in the 1980’s, the 0-10V sinking current control
method is adopted by the International Electrotechnical Commission (IEC) as apart of their IEC Standard 60929 Annex E.!
!
The method to dim the output current of the driver is done via the +Dim/-Dim Signal pins. The +Dim/-Dim Signal pins respond to a
0 to 10 V signal, delivering 1% to 100% of the output current based on rated current for each model. A pull-up resistor is included
internal to the driver. When the +Dim wire (purple) is short circuited to the –Dim wire (grey) or to the –LED wire (black), a small
amount of current may be present on the output and, in that condition, shimmering may be observed. If the +Dim input is ≤ 1 V
and ≥ 0.6 V, the output current is still present, as shown in figure 4. Please note that short circuiting the +Dim wire (purple) to
the –Dim wire (grey) does not guarantee that the output current is turned off. In some models, the current may turn off
when short circuiting the +Dim wire to the –Dim wire. In other models, there may be a small amount of current still
present. !
If the +Dim input is > 10 V or open circuited, the output current is programmed to 100% of the rated current.!
When not used, the –Dim wire (grey) and the +Dim wire (purple) can be individually capped or cut off. In this configuration, no
dimming is possible and the driver delivers 100% of its rated output current.!
The maximum source current (flowing from the driver to the 0-10V dimmer) supplied by the +Dim Signal pin is ≤$ 1 mA. The
tolerance of the output current while being dimmed shall be +/-8% typical until down to 1 V.!
!
There are two 0-10V dimming transfer functions available: a linear curve where 10V = 100% of the output current and 1V = 10% of
the output current (seen in figure 4) or a non-linear curve where 10V to 8.1V=100% of Iout, 1V to 0.8V=1% of Iout, and Dim-to-off
<0.8V (seen in figure 5).!
!
The linear curve is used across all the models of the ESSV series. The non-linear 0-10V dimming profile is available as an option.!
The non-linear curve is recommended when using standard wall-mount 0-10V logarithmic dimmers to avoid having insufficient
source current available to pull the dimmer up to 10V and to account for the inability of the dimmer to pull below approximately
0.9V. In these types of installations, the modified transfer function will ensure 100% light output and dimming to 1%, regardless of
the number of drivers on the 0-10V dimming line. Please contact your sales representative or send an email to
SaveEnergy@erp-power.com for additional information on the non-linear curve.!
Figure 4!