Table of Contents
Advertisement
4. WIRING
Wiring Instructions
(1) Always connect the power input terminals R/L1, S/L2, and T/L3 (R/L1,
S/L2 for single-phase) and power supply via a molded-case circuit
braker (MCCB) or a fuse. Never connect them to terminals
U/T1,V/T2,W/T3, –, +1 or +2.
Refer to page 111 for recommended peripheral devices. For single-
phase inverters, always use terminals R/L1 and S/L2. Never connect to
terminal T/L3.
Inverter Power Supply Connection Terminals
200V 3-phase Input
200V Single Input Power Supply Specification
Product
Power Supply
Specification Product
CIMR-J7??B???
CIMR-J7??2???
Connect to R/L1,
Connect to R/L1, S/L2
S/L2, T/L3
(2) Connect the motor wiring to terminals U/T1, V/T2 and W/T3 on the
main circuit output side (bottom of the inverter).
(3) If the wiring distance between inverter and motor is long, reduce the
inverter carrier frequency. For details, refer to "Reducing motor noise
or leakage current (n46)" on page 57.
(4) Control wiring must be less than 50m (164ft) in length and separate from
the power wiring. Use twisted-pair shielded wire when inputting the
frequency signal externally.
(5) Tighten the screws on the main circuit and control circuit terminals.
(6) Do not connect or disconnect wiring, or perform signal check while the
power supply is turned ON.
(7) For 400V class inverters, make sure to ground the supply neutral to con-
form to CE requirements.
(8) Only basic insulation to meet the requirements of protection class 1 and
overvoltage category II is provided with control circuit terminals.
Additional insulation may be necessary in the end product to conform to
CE requirements.
(9) A closed-loop connector should be used when wiring to the main circuit
terminal.
(10) Voltage drop should be considered when determining wire size.
Voltage drop can be calculated using the following equation:
Phase-to phase voltage drop (V)
= √ 3 × wire resistance (Ω/km) × wiring distance (m) × current (A) × 10
Select a wire size so that voltage drop will be less than 2% of the normal
rated voltage.
20
400V 3-phase Input
Power Supply Specification
Product
CIMR-J7??4???
Connect to R/L1, S/L2, T/L3
-3
Advertisement
Table of Contents
