II K 6-25
Operating Instructions
Red
LED
Green
LED
DCS 400
state
Remarks
Off
Off
No Rdy On
ON command prevented
Possible causes and remedies:
l
State caused by Emergency Stop or Coast. Close Emergency
Stop or Coast. Switch ON and RUN off and on again.
l
Zero Speed Lev (5.15) = 0 rpm or too low, increase it.
l
Normal state after concluding an optimisation routine, if the drive
has been controlled via digital inputs. Switch ON and RUN off and on
again.
l
Normal state during coasting, when the parameter Start Mode
(2.09) = Start from 0. Will be cancelled when the Zero Speed Lev
(5.15) is reached.
l
No communication between panel and unit, accompanied by COMM
LOSS display on panel. Watchdog has tripped, perhaps EMC cause,
see manual, Section 5.2. Also normal state during firmware download
procedure, because Jumper S4:1-2 is plugged in.
Off
On
l
Rdy On
Ready for ON command
l
Special Case 1:
State also possible if during switch-on of the electronics supply ON
and RUN are already present, but drive does not start. ON and RUN
must be switched off and on again.
l
Special Case 2:
When Start Mode (2.09) = Start from 0 and Zero Speed Lev (5.15)
= 0 rpm or is too low, the drive had been switched ON and
STOPped, then it can no longer be STARTed, because the standstill
message is not reached. ON and RUN must be switched off and on
again.
Off
Flashes
@
Rdy On
Alarm state, drive is nonetheless
Ready for ON command
Possible causes and remedies:
l
Alarm-specific remedial measures required, see manual chap. 6.4.6.
l
Drive is operational in spite of alarm.
On
l
Off
no Rdy On
Fault state
ON command prevented
Possible causes and remedies:
l
Fault-specific remedial measures required; see manual chap. 6.4.5.
Eliminate fault, then operate Reset
l
After Reset, switch ON and RUN off and on again.
On
l
On
l
DCS 400
initialisation phase
Initialisation phase
After the electronics supply has been switched on, both LEDs light up
briefly during the initialisation phase of the DCS 400.
Flashes
@
Flashes
@
DCS 400
initialisation phase
Hardware problem with the power supply
After the electronics supply has been switched on, both LEDs flash, and
no actual-value display is provided. Take off the control panel and
observe the 7-segment display. When all 7 segments light up, this means
there is a problem in the electronics supply. Replace SDCS-PIN-3A if
necessary.
6.4.4 Significance of the panel LEDs
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