NOTICE
Do not touch until the DC voltage is below 10 V.
4.
Disconnect the DC-link fuses of the damaged
power unit and AC connection.
5.
Disconnect the softcharge connector on the
softcharge board of the damaged power unit.
6.
Disconnect the ribbon cable, from the damaged
AFE power unit, on the MDCIC card.
7.
If the removed connector is at Inverter 2 position,
move the ribbon cable at Inverter 3 position to
Inverter 2.
8.
Turn the key switch to
AFE emergency mode
.
9.
Switch Cane on.
10.
Check on the AFE LCP if it is in set-up 2. The set-
up shift at the AFE is done with terminal 32 at
AFE control card. Terminal 32 = 0 means set-up 1,
Terminal 32 = 1 means set-up 2.
11.
A warning 78 (power unit set-up) may come up
at the AFE LCP.
12.
Switch Crane off.
13.
Wait at least 20 s. All LCPs must be completely
off.
14.
Switch Crane on.
15.
The warning 78 disappears and the warning 77
(Reduced power mode) appears on LCP.
16.
The AFE can run with two units with a reduced
power.
3.7.2 Restoration after Slave Unit is
Repaired
1.
Switch Crane on but do not run any frequency
converter.
2.
Turn the key switch to
AFE normal mode
.
3.
A warning 78 appears on AFE LCP.
4.
Check on the AFE LCP if it is in set-up 1. The set-
up shift at the AFE is done with terminal 32 at
AFE control card. Terminal 32 = 0 means set-up 1,
Terminal 32 = 1 means set-up 2.
5.
Switch Crane off.
6.
Check the DC-link voltage with a voltage meter at
the terminals before and after the DC fuses.
NOTICE
Do not touch until the DC voltage is below 10 V.
7.
Bring back the ribbon cables on the MDCIC card
in the original set-up (AFE Master to Inverter 1,
AFE Slave left to Inverter 2, AFE Slave right to
Inverter 3).
8.
Connect the softcharge connector on the
softcharge board.
9.
Connect the DC-link fuses and AC connection.
10.
Switch on the circuit breaker in front of the AFE.
11.
Switch Crane on.
12.
The AFE runs now with all 3 power units.
3.7.3 Emergency Run when Master Unit is
Damaged
NOTICE
The power is reduced to two thirds of the original.
1.
Switch Crane off.
2.
Switch the circuit breaker in front of the
damaged AFE power unit off.
3.
Check the DC-link voltage with a voltage meter at
the terminals before and after the DC fuses.
NOTICE
Do not touch until the DC voltage is below 10 V.
4.
Disconnect the DC-link fuses of the damaged
power unit and AC connection.
5.
Disconnect the softcharge connector on the
softcharge board of the damaged power unit.
6.
Disconnect the ribbon cable from the Inverter 1
position at the MDCIC.
7.
Unplug the ribbon cable at Inverter 3 position on
the MDCIC card and plug it at Inverter 1 position.
8.
Plug this ribbon cable (what you plugged out
from Inverter 3) on the connector Inverter 1. Now
the right power unit will be the AFE Master.
9.
Turn the key switch to
AFE emergency mode
.
10.
Switch Crane on.
11.
Check on the AFE LCP if it is in set-up 2.
12.
A warning 78 may appear on AFE LCP.
13.
Switch Crane off.
14.
Wait at least 20 s. All LCPs must be completely
off.
15.
Switch Crane on.
16.
The warning 78 disappears and the warning 77
appears on LCP.
17.
The AFE can run with two units with a reduced
power.
Crane System Design
Operating Instructions
MG33X402
Danfoss A/S © Rev. 05/2014 All rights reserved.
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