Adapting The Unit To The Mains Voltage - Pfannenberg DTT 6801 Serie Betriebsanleitung

ENG
NOTE
Protective conductors in the mains connection cable are not regarded as potential equalization conductors.
Prerequisite
DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free.
• All general requirements for safe and reliable operation are fulfilled.
Procedure
1. Make the mains connection according to the circuit diagram, see chapter "Electrical circuit diagram – Standard-Controller
(SC)", Page 39.
2. Open the cage clamp terminal of the connecting plug with the flat screwdriver and connect the cables on the plug.
– Firmly insert the screwdriver into the cage clamp terminal. Never turn, this will damage the cage clamp terminal.
3. Before switching on, make sure that the mains voltage matches the data on the type plate and that there is a right-hand
field of rotation.
The cooling unit is connected electrically.

4.6.7

Adapting the unit to the mains voltage

Factory settings control transformer
Fig. 23: Adapting the mains voltage on the control transformer
Units with a mains voltage of 400/460 V can be connected optionally to another mains voltage.
The mains voltage on the transformer must be adapted for this.
• The adaption is made by replugging the supply cable on the primary side of the transformer.
• The upstream fuse must match the changed mains voltage, see the "Upstream fuse" column in
• The data for the transformer factory settings can be found on the yellow connection diagram (1) on the rear of the unit.
• UL-conform with following fuses: Category "ClassCC", slow-blow.
Mains voltage
50 Hz 60 Hz
400 V —
— 460 V
Tab. 9: Transformer options and upstream fuse
Operating Manual | Roof-mounted Cooling Unit | Standard Controller (SC) – 400 / 460 V, 3~ | 086100040b
Transformer
Input winding
T1/ 1 [0] – T 1/ 4 [400]
T1/ 1 [0] – T 1/ 7 [460]
L2
L1
Input winding control transformer
Upstream fuse
(Min. 480 V)
Max. 2.5 A
G00057
Tab. 9
Max. 4 A
46/47