Instruction Manual
for
AS380 Series Elevator Integrated Drive Controller
207
Leveling fine-tuning: set the leveling fine-tuning of each floor to factory default: 20 mm
2. Encoder interference
1) Encoder shielded wire is not grounded, or the signal lines and power lines are not
separated, or interfered by power lines. This problem is very serious on the synchronous motor
site. Sincos Encoder or resolver is small analog signal, more vulnerable to interference, which is
reflected by random irregular unleveling.
2) Check methods: record the well data (from the bottom to the top) after self study, re-start
well self study, compare the two self study data, with a corresponding position error of less than
3mm (usually identical or difference of + - 1mm), error of more than 3 mm can be regarded as
Encoder interfere or traction wheel skid.
3) Solutions:
a) Confirm that the motor ground wire has been connected from the motor to the control
cabinet
b) Confirm that the shielding line from Encoder to the inverter PG card has been
grounded at the inverter end. Check whether this grounding line has intermediate connection
terminal. If any, make sure both ends of the shielding lines are grounded. Note: the connection of
the synchronous motor Sincos Encoder!!!
c) Confirm that the shielding line from the inverter PG Card to the motherboard Encoder
has been grounded
d) Confirm the Encoder lines separated from power lines and braking resistor lines (cover
the Encoder lines with flexible conduit if in the same groove)
e) Confirm that the 0V of PG card is connected with the 0V of the motherboard (in
particular, in multi-speed A +, A-, B +, B-output)
f) Check whether connecting shaft of Encoder skids
3． Steel wire rope of traction wheel slips
1) Phenomenon: the leveling is not accurate in case of operation with no-load or full load, or
the upward leveling is inconsistent with downward leveling, half-load operation leveling is
accurate.
2) Check method: at any floor (assumed to be Floor 3), mark an aligning chalk line between
the steel wire rope and the traction wheel, run a single level back and forth layer (Floor 3 ->
Floor 4, Floor 4 to Floor 3), and back to Floor 3, check the error distance with the chalk mark
(required to be less than 5mm). This error distance is the slip error for a single level. The slip
error should be done twice respectively in no load and full load. All slip error greater than 5 mm
must be resolved.
3) Solution
a) There may be a 200Kg weight difference for the lift car before and after decoration.
Has the lift car decoration finished? Is the current balance coefficient correct? If not sure, set the
lift car to half loaded, is there still leveling error?
b) If it is impossible to resolve the slipping problem for high-speed elevator, there are
two solutions as follows:
1. Install Encoder on one side of the speed governor to feedback the position to the
motherboard
2. Use creeping to absorb slip error, set F24 = 2 (analog signal with creeping) or F24 = 0
(multi-speed operation)
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