Ground Fault Detection; Closed-Loop Control; Fan In The Door; Mushroom Pushbutton - Siemens SINAMICS GL150 Operating Instructions & Installation Instructions

3.3.2.4

Ground fault detection

The measuring resistors are current-limiting elements. Using them in conjunction with the
surge suppressor provides personnel protection.
①
②
Figure 3-8
3.4

Closed-loop control

3.4.1

Fan in the door

A fan with filter is installed in the control cabinet door. The fan is thermostatically controlled and
is switched on when the temperature inside the cabinet reaches approximately 40 °C. The air
is drawn in through the lower door filter and blown out using the fan.
3.4.2

Mushroom pushbutton

The mushroom pushbutton is used for safety shutdown. When the safety shutdown function is
actuated, the converter shuts down with a fault and a corresponding message appears on the
display of the operator panel. Before you restart the converter you must acknowledge the fault.
SINAMICS GL150 6SL38502UM114PA0Z
Operating Instructions Rev.201910281441 EXAMPLE
Precision resistors
Surge suppressor and base point resistor
Operator protection, ground fault detection
Description
3.4 Closed-loop control
37