Kipp&Zonen SOLYS 2 Sun Tracker - Manual (Page 16)

3.6 CONNECTING AC/DC POWER
CAUTION, RISK OF ELECTRIC SHOCK, ALWAYS CONNECT A PROTECTED EARTH
Important: Power supply
SOLYS 2 can be operated on either 115/230 VAC or 24 VDC. In case both the AC and DC supplies are
present and the AC power is within its operating range (90 – 264 VAC) the SOLYS 2 will use the AC power. If
the AC power fails and DC power is present the SOLYS 2 will without interruption continue on DC power.
Inside the SOLYS 2 a 4 A slow blow fuse is used for the internal heater.
Important: Operating Temperature
SOLYS 2 has an operating temperature range of -20°C to +50°C when operating on 24 VDC. When AC power
is applied the standard built-in heater will be used. The use of the heater extends the operating temperature
to - 40°C. The internal heater automatically switches on below 5ºC. If the SOLYS 2 is first started below -20°C
it can take up to 30 minutes before the interior is above - 20°C and the SOLYS 2 will start.
Table 4: SOLYS 2 Operating Temperature Range.
SOLYS 2 operating on DC power (heater not functional) -20°C to +50°C
SOLYS 2 operating on AC power (heater operational) -40°C to +50°C
Figure 3.1: connectors on the underside of the SOLYS 2