YASKAWA LA500, Technical Manual

Page: 73 / 376

Electrical
Installation
3
3.14 Wiring Checklist
YASKAWA SIEPYEULA5001C LA500 Technical Manual 73
3.14 Wiring Checklist
Wire the drive, examine these items, then do a test run.
◆
Power Supply Voltage
Checked No. Item to Check
1 The power supply voltage must be in the input voltage specification range of the drive.
◆
Main Circuit Wiring
Checked No. Item to Check
1
•
Put the power supply through a molded-case circuit breaker (MCCB) before it gets to the drive input.
• Connect an applicable MCCB.
2 Correctly wire the power supply to drive terminals R/L1, S/L2, and T/L3, or L/L1 and N/L2.
3 Correctly wire the drive and motor together.
The motor lines and drive output terminals U/T1, V/T2, and W/T3 must align to make the correct phase order.
Note:
If the phase order is incorrect, the drive will rotate in the opposite direction.
4 Use 600 V heat resistant indoor PVC wire for the power supply and motor lines.
Note:
Wire gauge recommendations assume use of 600 V class 2 heat-resistant indoor PVC wire.
5 Use the correct wire gauges for the main circuit.
Note:
•
When the wiring distance between the drive and the motor is long, use this formula for the voltage drop in the wire:
Motor rated voltage (V) × 0.02 ≥ √3 × wire resistance (Ω/km) × wiring distance (m) × motor rated current (A) × 10
-3
• When the cable between the drive and motor is longer than 50 m (164 ft), use parameter C6-02 [Carrier Frequency Selection] to
decrease the carrier frequency.
6 Correctly ground the drive.
7 Tighten the main circuit and grounding terminal screws of the drive to a correct tightening torque.
8 When you use a braking resistor or a braking resistor unit, install an electromagnetic contactor (MC).
Correctly install the resistor and make sure that overload protection uses the MC to shut off the power supply.
9 Make sure you did not install phase advancing capacitors, input noise filters, or ELCBs, GFCIs, RCM/RCDs on the output side of the drive.
◆
Control Circuit Wiring
Checked No. Item to Check
1 Use twisted-pair cables for all drive control circuit wiring.
2 Ground the shields of shielded wiring to terminal E (G).
3 Wire Up/Down inputs S1 and S2.
4 Correctly install any options.
5 Examine the drive for other wiring errors.
Only use a multimeter to check wiring.
6 Tighten the control circuit terminal screws of the drive to a correct tightening torque.
7 Pick up all wire clippings.
8 Make sure that none of the wires on the terminal block touch other terminals or connections.
9 Make sure that you isolate the control circuit wiring from main circuit wiring in the control panel or in a duct.
10 Make sure that control circuit wiring is not longer than 50 m (164 ft).
11 Make sure that Safe Disable input wiring is not longer than 30 m (98 ft).