YASKAWA CR700, Technical Manual, Page: 134 / 886

2.24 Wiring Checklist
134 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
2.24 Wiring Checklist
After wiring of the drive is complete, go through the following checklist before test run.
Table 2.29 Power Supply Voltage
Check No. Item to Check
1 The power supply voltage should be within the input voltage specification range of the drive.
Table 2.30 Main Circuit Wiring
Check No. Item to Check
1 The power supply should be passed through a molded-case circuit breaker (MCCB) before being input.
An appropriate molded-case circuit breaker (MCCB) should be connected.
2 Properly wire the power supply to drive terminals R/L1, S/L2, and T/L3.
3 Properly wire the drive and motor together. The motor lines and drive output terminals U/T1, V/T2, and W/T3 should match to produce the
desired phase order.
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, confirm that the voltage drop in the wire meets the value calculated as
follows:
Motor rated voltage (V) × 0.02 ≥ √3 × wire resistance (Ω/km) × wiring distance (m) × motor rated current (A) × 10
-3
• If the cable between the drive and motor exceeds 50 m, lower the carrier frequency using C6-02 [Carrier Frequency Selection] .
6 Properly ground the drive.
7 Tighten main circuit and grounding terminal screws of the drive to their specified torques.
8 Set up overload protection circuits when running multiple motors from a single drive.
A - Power Supply
B - Drive Series
C - oL1 - oLn: thermal overload relay
Note:
Set
H1-03 = 25 [Terminal S3 Function Selection = External Fault (NC-Always-Coast)]
.
9 Install an electromagnetic contactor (MC) when using a braking resistor or a braking resistor unit. Properly install the resistor and ensure that
overload protection shuts off the power supply using the electromagnetic contactor.
10 Verify phase advancing capacitors, input noise filters, or earth leakage circuit breakers are NOT installed on the output side of the drive.
Table 2.31 Control Circuit Wiring
Check No. Item to Check
1 Use twisted-pair cable for all drive control circuit wiring.
2 Ground the shields of shielded wiring to the terminal E (G).
3 Properly wire any option cards.
4 Check for any other wiring mistakes.
Note:
Only use a multimeter to check wiring.
5 Tighten the control circuit terminal screws of the drive to their specified torques.
6 Pick up all wire clippings.
7 Ensure that no frayed wires on the terminal block are touching other terminals or connections.
8 Properly separate control circuit wiring and main circuit wiring.
9 Control circuit wiring should not exceed 50 m.
10 Safe Disable input wiring should not exceed 30 m.