11 PREVENTIVE AND CORRECTIVE MAINTENANCE
3BHS213401 E01 REV H
ACS1000 AIR-COOLED
USER MANUAL
164/184
11.6.3
Grounding
1. If the yellow lamp is on, turn the grounding switch to the grounded position.
When the grounding switch is in the grounded position, the status line of the CDP control
panel displays
ErthIsoClos
.
(Earth isolator closed = grounding switch is in grounded position).
2. To de-energize the drive completely, switch off and lockout all auxiliary voltages from
external sources.
Note:
To open the doors of medium voltage compartments and additional cabinets of the
drive that are equipped with an electromechanical lock, you need to have the auxiliary
voltage switched on.
3. If necessary, connect a grounding set.
11.6.4
Grounding switch is not released
CAUTION
⚠
To check why the grounding switch is not released, complete the list Checking the release
conditions for the grounding switch.
1 L ->
0.0 rpm
Status
ErthIsoClos
MotorSpeed 0.00 rpm
Power
0.0 %
Hazardous voltage!
If the lamp GROUNDING SWITCH UNLOCKED does not light up, do not force the
grounding switch in any direction before you know the reason why the lamp does
not light up; otherwise, the following can happen:
- The switch closes when the DC link is still energized and short-circuits the DC-
link capacitors. The short-circuit manifests itself in a loud bang.
- The switch is damaged because it is not released for closing.
To identify the components referred to in the check list, see the wiring diagrams
and Fig. 11-4.
Summary of Contents for ACS 1013-A1
Page 1: ... MEDIUM VOLTAGE AC DRIVES ACS1000 air cooled User manual ...
Page 3: ...Contents ACS1000 air cooled User manual ...
Page 5: ... 01 About this manual 01 3 14 ...
Page 16: ......
Page 17: ... 02 Important safety information 02 15 26 ...
Page 28: ......
Page 29: ... 03 Power electronics and cabinet features03 27 50 ...
Page 53: ... 04 Control system 04 51 66 ...
Page 68: ......
Page 69: ... 05 Transportation storage and disposal05 67 74 ...
Page 76: ......
Page 77: ... 06 Mechanical installation 06 75 82 ...
Page 84: ......
Page 85: ... 07 Electrical installation07 83 106 ...
Page 108: ......
Page 109: ... 08 Commissioning 08 107 112 ...
Page 115: ... 09 Operation 09 113 126 ...
Page 129: ... 10 CDP control panel 10 127 150 ...
Page 153: ... 11 Preventive and corrective maintenance 11 151 182 ...
Page 185: ......