Front side and operating elements

Input terminals (quick-connect spring-loaded terminals)
Designation (A)  | Description  | 
|---|---|
L1, L2, L3  | Mains input L1, L2, L3  | 
  | PE input (protective conductor)  | 
Output terminals (quick-connect spring-loaded terminals)
Designation (B)  | Description  | 
|---|---|
+  | two identical positive poles, positive output  | 
-  | two identical negative poles, negative output  | 
DC-OK relay contact (quick-connect spring-loaded terminals)
Designation (C)  | Description  | 
|---|---|
13 / 14 make contact  | The DC-OK relay contact is synchronized with the DC-OK LED   | 
Potentiometer for the output voltage
Designation (D)  | Description  | 
|---|---|
Potentiometer cover  | Multi-turn potentiometer: Open the flap to adjust the output voltage. Factory setting: 24.1 V at full output current  | 
Overload LED
Designation (E)  | Description  | 
|---|---|
LED red  | On when the voltage at the output terminals is <90% of the set output voltage, or in the event of a short circuit in the output. On when the unit has switched off due to overtemperature. The input voltage is always required.  | 
DC OK LED
Designation (F)  | Description  | 
|---|---|
LED green  | On when the voltage at the output terminals is >90% of the set output voltage.  | 
LED displays  | Overload LED  | DC-OK LED  | DC-OK contact  | 
|---|---|---|---|
Normal mode  | OFF  | ON  | Closed  | 
During extra power  | OFF  | ON  | Closed  | 
Overload (Vout < 90%)  | ON  | OFF  | Open  | 
Short circuit at output  | ON  | OFF  | Open  | 
Temperature switch-off  | ON  | OFF  | Open  | 
No input power  | OFF  | OFF  | Open  | 
