4.8 Travel limit switches .............................................................................................................................................................................................40 
4.8.1 Monorail trolley...............................................................................................................40 
4.8.2 Double rail trolley...........................................................................................................40 
4.9 Electrical equipment .............................................................................................................................................................................................41 
4.9.1 Supply cables.................................................................................................................41 
4.9.2 Terminals........................................................................................................................41 
4.9.3 Protection of equipment................................................................................................42 
4.9.4 Emergency stop.............................................................................................................42 
4.9.5 Runway conductor disconnecting means....................................................................42 
4.9.6 Disconnect switch..........................................................................................................42 
4.9.7 Connection fuses...........................................................................................................42 
4.9.8 Electromagnetic compatibility.......................................................................................43 
4.9.9 Overload safety device..................................................................................................44 
4.9.10 Connecting to mains......................................................................................................45 
4.9.11 Control and control functions........................................................................................46 
4.9.12 Electric motors and related equipment........................................................................47 
4.10 YK/SK hoists with frequency inverter (VFD) ....................................................................................................................................................47 
4.11 Reeving rope ..........................................................................................................................................................................................................48 
5Commissioning......................................................................................................................................................................................................53 
6Operating.................................................................................................................................................................................................................54 
6.1 Operating precautions..........................................................................................................................................................................................54 
6.2 Duties of crane operator.......................................................................................................................................................................................56 
6.3 Using control pendant..........................................................................................................................................................................................57 
6.4 Operating hoist with frequency inverter ...........................................................................................................................................................58 
6.5 Emergency stop.....................................................................................................................................................................................................58 
7Inspection and maintenance...............................................................................................................................................................................59 
7.1 Inspection intervals...............................................................................................................................................................................................60 
7.2 Maintenance intervals...........................................................................................................................................................................................61 
7.3 Motors......................................................................................................................................................................................................................62 
7.4 Hoist motor brake (RSM)......................................................................................................................................................................................63 
7.4.1 Checking brake..............................................................................................................63 
7.4.2 Replacing brake disk (brake rotor)...............................................................................63 
7.5 Hoist motor brake (NM) (pole-changing)...........................................................................................................................................................64 
7.5.1 Checking brake..............................................................................................................64 
7.5.2 Replacing brake disk (brake rotor)...............................................................................64 
7.6 Hoist motor brake (NM) (4-pole)..........................................................................................................................................................................65 
7.6.1 Checking brake..............................................................................................................65 
7.6.2 Replacing brake disk (brake rotor ................................................................................65 
7.7 Hoist motor brake (NM) 4HS................................................................................................................................................................................67 
7.7.1 Checking brake..............................................................................................................67 
7.7.2 Replacing brake disk (brake rotor)...............................................................................67 
7.8 Travel motor brake ................................................................................................................................................................................................68 
7.9 Hoist limit switch ...................................................................................................................................................................................................69 
7.9.1 Hoist limit switch (standard)..........................................................................................69 
7.10 Hoist limit switch ...................................................................................................................................................................................................70 
7.10.1 Description of hoist limit switch system........................................................................70 
7.10.2 Testing emergency hoist limit switch, version 1..........................................................70 
7.10.3 Testing operational hoist limit switch, version 1..........................................................70 
7.10.4 Testing emergency hoist limit switch, version 2..........................................................71 
7.10.5 Testing operational hoist limit switch, version 2..........................................................71 
7.10.6 Setting hoist limit switch................................................................................................72 
7.10.7 Servicing hoist limit switch ............................................................................................75 
7.11 Hook dimensions C for KE-S.. trolleys..............................................................................................................................................................76 
7.12 Overload safety device.........................................................................................................................................................................................77 
7.12.1 Testing overload safety device.....................................................................................77 
7.12.2 Maintenance of overload safety device with pressure sensor...................................77 
7.12.3 Maintenance of overload safety device with shear force sensor...............................77 
7.13 Crane test................................................................................................................................................................................................................77 
7.14 Rope drive...............................................................................................................................................................................................................78 
7.14.1 Rope and rope attachment - general information .......................................................78 
7.14.2 Replacement of wire rope due to broken wires...........................................................79