
5
Diagnostics and fault elimination
5.1
LED status displays
The "RDY" and "ERR" LED status displays on the front of the inverter provide some quick infor-
mation about certain operating states.
"RDY" LED (blue)
"ERR" LED (red)
Status/meaning
off
off
No supply voltage.
blinking (1 Hz)
off
Safe torque off (STO) active.
blinking fast (4 Hz)
Safe torque off (STO) active, warning active.
blinking (2 Hz)
off
Inverter inhibited.
blinking fast (4 Hz)
Inverter inhibited, warning active.
on
Inverter inhibited, fault active.
lit every 1.5 s for a
short time
Inverter inhibited, no DC-bus voltage.
on for a short time
every 1 s
Diagnostic module is connected, 5 V supply voltage for diagnostic module is available.
on
on
Initialisation (inverter is started) or quick stop active.
off
Inverter enabled.
The motor rotates according to the setpoint specified.
blinking fast (4 Hz)
Inverter enabled, warning active.
The motor rotates according to the setpoint specified.
blinking (1 Hz)
Inverter enabled, quick stop as response to fault active.
66 ms off
125 ms on
66 ms on
125 ms off
Firmware update active.
Both LEDs are flickering synchronously
"Optical detection" function active.
Diagnostics and fault elimination
LED status displays
42
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