Siemens SIMOTRAS 6SG7050, Руководство по эксплуатации

Страница: 279 / 604

01.04 Function diagrams
SIEMENS AG 6SG7000-0BA76
8-137
SIMOTRAS HD Operating Instructions
for Sheet K17, fault acknowledgement, high-speed step
If the converter is shutdown as the result of a fault signal, the fault can only be acknowledged when the fault
is no longer active, the converter is not in Run mode and the master switch is in the zero position (no travel
command present).
The master switch signal for open-loop operation only takes effect when the actual speed value has reached
the high-speed threshold and as long as the pre-limit switch area has not been entered. High-speed mode
becomes active again on moving away from the pre-limit switch area.
for Sheet K18, limit-value monitor
Two limit-value monitors output a control signal depending on the current direction of rotation and speed. If
the speed exceeds a threshold value, the flag bit is set to zero. A safety circuit can be implemented in an
external control unit in connection with pre-limit monitoring limit switches.
A limit-value monitor issues the signal for switching over the ramp-up times used in the open-loop and
closed-loop ranges.
for Sheet G150, start pulse, speed controller
The speed controller starts from a defined value, not 0. With lifting gear, this prevents the load dropping as
the movement starts.
A lower start pulse can be used if starting off in a lowering direction.