ABB ACS2000 AFE 1MVA User Manual page 165

165 ACS2000 AFE 1MVA UM 3BHS297030 ZAB E01 REV. J
10.6.4 Grounding switch is not released
When the DC link of the drive has been discharged,
the lamp GROUNDING SWITCH UNLOCKED lights
up to indicate that the grounding switch is
released and can be turned to the grounded posi-
tion. If the lamp does not light up, proceed as fol-
lows:
1. Do not force the grounding switch in any direc-
tion.
2. To test the lamp GROUNDING SWITCH
UNLOCKED, activate the lamp test with param-
eter 16.7.
(For information on setting parameters, see
Parameters
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-
-
3. Verify that the MCB (main circuit breaker) is
open.
a. If the MCB is open, check that it is locked
b. Check if the SUPPLY OFF lamp is lit.
4. Check if the LED of digital output DO03 (I/O
module A3401) is lit.
If the LED is lit, the grounding switch is
released.
5. Check the discharging level of the DC link.
If the value of parameter 2.01 DC VOLTAGE is
below 50 V, the DC link is discharged.
If the DC link is discharged, the message
ReadyOn is displayed on the CDP control panel.
6. Verify that hazardous voltages from the motor
cannot be fed into the drive.
7. Carefully turn the grounding switch to the
grounded position f it has been verified:
-
-
-
-
If you cannot turn the grounding switch, con-
tinue with
switch.
8. Switch off and lockout all auxiliary voltages
from external sources.
mode.)
If the lamp does not light up, replace it.
If the lamp lights up after it was replaced,
continue with step 7..
If the lamp does not light up after it was
replaced, continue with step 3..
out.
If the lamp is lit, the feedback signal "main
circuit breaker open" is present at digital
input DI09 of I/O module A3411.
0.0 rpm
1 L ->
ReadyOn
StateINU
MOTOR SP 0.00 rpm
POWER
0.0 kW
that hazardous voltages cannot be fed into
the drive from the main power supply or the
motor,
that the DC link is discharged,
that the grounding switch is released (DO03
is energized).
that the drive status is ReadyOn.
10.6.6 Releasing the door safety
9. Verify that the drive system is de-energized.
10. Ground the drive with a grounding set (option).
9.6