Panel supply
Use two-conductor cable of cross-section >1mm
2
to connect the panel to the power supply. Length of the
supply cable should not exceed the value given in the below table when using the AC20 power supply
(14VAC, 20VA, available from ELFON). Should length of the supply cables be longer, it is necessary to
increase the panel voltage supply remembering not to exceed 15 VAC. For example, when using the supply
voltage 15 VAC, it is possible to extent the distance to 70 m using the cable AWG17.
AWG
Cross-section [mm2]
Maximum distance [m]
17
1,04
10
16
1,31
15
15
1,65
20
14
2,08
30
13
2,62
50
Table 3: Length of supply cables with 14 VAC supply
More information on the digital panel connections together with additional modules and configuration of
the supply is given in addendum A
.
!
In the case of supplying Optima SL255RC by AC20, it is not recommended to connect more
than one panel to one AC20 power supply
Description of panel terminals
Panel is equipped with a series of connections which are used depending on the degree of the system
development.
9
Figure 1: Panel terminals
Summary of Contents for OPTIMA SL255
Page 2: ...2...
