Invertek Drives elevator CORE Quick Start-Up Manual page 12

12 | P a g e
8. Electrical Installation
8.1. Electrical Installation quick reference diagram
•
Check Supply Voltage does not exceed drive Voltage rating as shown on rating label.
•
Check the number of supply phases is compatible with the drive as shown on rating label.
•
If the power supply has a low supply impedance /high short circuit current a Line
reactor/Isolation transformer maybe required.
•
For generator Bourne power supplies please contact your Invertek sales partner for further
guidance.
•
Ensure there is at least 30 seconds between each power-on.
•
Install suitably rated fuses/Circuit breakers
•
If an earth leakage detection device is used (e.g.ELCB/RCD), a type B trip characteristic
which is suitable for protecting equipment with a DC component should be used, 1 device
for multiple drives should be avoided.
Install Line reactor as close to the drive as possible and under the following conditions:
•
If phase-phase imbalance is >3% (3Ø drives).
•
To reduce Inrush current.
•
If power supply has a low supply impedance/high short circuit current.
•
If power supply is prone to dips or brown-outs.
•
If power supply is via a bus-bar and sliding contacts system.
•
Reduction in mains Harmonic emission.
•
Install External EMC filter if the motor cable length exceeds the Electromagnetic
interference reduction capability of the internal filter
•
Do Not Use EMC filters on IT (Ungrounded) or a corner grounded TN power supply systems.
Functionality of control terminals is pre-configured according to parameter P1-02, default
functionality is shown below :
DI1 DI2 DI3
Open
Open Open
Disabled/
Disabled/ Disabled/
Levelling
Close Close
Speed
Forward Reverse
(P8-05)
The drive will only start if all the below conditions are met:
•
Safe Torque off inputs are enabled.
•
A direction Command (DI1 or DI2) has been given.
•
At least 1 speed has been selected.
Note : If more than 1 speed selection input is high the highest speed will be used.
Install Output Choke under the following conditions:
•
If cable between the drive and motor exceeds 100m (screened cable), or 150m (un-screened
cable).
•
If motor is not "inverter rated".
Encoder Wiring:
The encoder cable should be screened, ideally with each signal pair individually screened. The
screen should be connected to the 0V of the encoder module, or shield/screen connection.
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DI4 DI5 DI6
Open Open Open
Disabled/ Disabled/ Disabled/
High High Inspection
Speed Speed 5 Speed
(P8-06) (P8-12) (P8-08)
DI7 DI8
Rescue
Fault
Mode
Reset
Enable