BLEMO ER24 Series, Programming Manual

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308
Diagnostics and Troubleshooting
Error code
•
If the dis play does not light up, check the power s upply to the drive.
•
The as s ignment of the Fas t s top or Freewheel functions will help to prevent the drive s tarting if the
corres ponding logic inputs are not powered up. The ER24 then dis plays
[Freewheel] (nSt) 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
s o 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 wire control]
(tCC) 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 s tarted 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
[Freewheel]
(nSt) and rem ain in s top m ode until the com m unication
bus s ends a com m and.
Code Nam e / De s cription
dGt-
[DIAGNOSTICS]
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 pres ent.
•
Lock all power dis connects in the open pos ition.
•
Wait 15 m inutes to allow the DC bus capacitors to dis charge (the drive LEDs are not indicators of the
abs ence of DC bus voltage).
•
Meas ure the voltage of the DC bus between the PA/+ and PC/– term inals to ensure that the voltage is les s
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 res ettable detected fault, the drive can be res et after the caus e is cleared:
- By s witching off the drive until the dis play dis appears com pletely, then s witching on again.
- Autom atically in the s cenarios 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] (rSt-) function, page 251 .
- By pres s ing the STOP/RESET key on the graphic dis play keypad if the active channel com m and is
the HMI (s ee
[Cmd channel 1]
(Cd1) page 155 ).