Diagnostics and Troubleshooting
Error code
•
If the dis play does not light up, check the power s upply to the drive.
•
The as signment of the Fas t stop or Freewheel functions will help to prevent the drive s tarting if the
corres ponding logic inputs are not powered up. The ER24 then displays
[Freewheel]
(
nS
t
) in
freewheel s top and
[Fast stop]
(FSt)
in fas t s top. This is norm al s ince thes e functions are active at zero
so that the drive will be s topped if there is a wire break.
•
Check that the run com m and input is activated in accordance with the s elected control m ode
(
[2
/3 wi
re
control]
(
tC
C
) and
[2
wire type]
(
tCt
) param eters, page 85).
•
If an input is as s igned to the lim it s witch function and this input is at zero, the drive can only be started up
by s ending a com mand for the oppos ite direction (s ee page 224).
•
If the reference channel or com m and channel is as signed to a com m unication bus, when the power s upply
is connected, the drive will dis play
[F
reewheel ]
(
nS
t
) and rem ain in s top m ode until the com munication
bus sends a com m and.
Code Nam e / De s cription
This menu can only be accessed with the graphic display terminal. It displays detected faults and their cause in plain text and can
be used to carry out tests, see page 64.
Clearing the detected fault
In the event of a non res ettable detected fault:
•
Dis connect all power, including external control power that m ay be present.
•
Lock all power disconnects in the open pos ition.
•
Wait 15 m inutes to allow the DC bus capacitors to discharge (the drive LEDs are not indicators of the
absence of DC bus voltage).
•
Measure the voltage of the DC bus between the PA/+ and PC/– term inals to ensure that the voltage is less
than 42 Vdc.
•
If the DC bus capacitors do not discharge completely, contact your local BLEMO repres entative. Do not
repair or operate the drive.
•
Find and correct the detected fault.
•
Res tore power to the drive to confirm the detected fault has been rectified.
In the event of a resettable detected fault, the drive can be reset after the cause is cleared:
-
By switching off the drive until the dis play dis appears com pletely, then switching on again.
-
Autom atically in the scenarios des cribed for the
[AUTOMATIC RESTART]
(
Atr-
) function, page
252.
-
By m eans of a logic input or control bit as signed to the
[FAULT RESET]
(
rS
t-
) function, page 251.
-
By press ing the STOP/RESET key on the graphic display keypad if the active channel com m and is
the HMI (s ee
[Cmd channel 1]
(Cd1) page 155).
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