AS-11.65.037
13 (40) (A) 2009-10-16
KDL16
Maintenance Instruction
© 2009 KONE Corporation
All rights reserved.
Disclosure prohibited
3.4 Safe de-energizing method
• Check that the DANGER led (D1) is lit.
• Switch OFF the main switch (220) in the MAP.
• Lock and tag the main switch (220).
• Wait for 5 minutes.
• Check that the link voltage led (D1) is NOT lit.
• Check that there is no voltage (AC) in power supply terminals (A) T1-T2, T1-T3, T2-T3.
• Check that there is no voltage (DC) in the intermediate circuit from braking resistor terminal XBRE2
(B). Measure from connector XBRE2 (B), between terminals 1 to ground and 3 to ground.
3.5 Basic rules preventing ESD hazards
If the DANGER led (D1) does not illuminate, when the main power is ON, do
not open the drive module. Switch OFF the main switch (220). Lock and tag.
Wait for 5 minutes. Remove the drive module with special caution!
Inverter drives usually remain energized for about 5 minutes after the power
has been disconnected.
DO NOT work on the drive, hoisting motor or braking resistors until you have
verified that this energy has been discharged.
Test equipment must be set to the 1000 VDC range. The test equipment must
be checked before and after the test to ensure that it functions correctly.
1 Disconnect all power supplies.
2 Earth yourself before touching components.
3 Do not unpack the spare parts before installation.
4 Do not touch the components on the board unnecessarily.
5 Hold the PCB from its edges.
6 The old component must be handled in the same way as the new one.
7 Do not wear combinations of clothing that can create static charges.
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