Main Circuit Wiring; Main Circuit Wiring; Factory Recommended Branch Circuit Protection; Main Circuit Terminal Functions - YASKAWA iQpump1000 Quick Start Manual

3.6

Main Circuit Wiring

This section describes the functions, specifications, and procedures required to safely and properly wire the main circuit in
the drive.
NOTICE: Do not solder the ends of wire connections to the drive. Soldered wiring connections can loosen over time. Improper wiring practices
could result in drive malfunction due to loose terminal connections.
NOTICE: Do not switch the drive input to start or stop the motor. Frequently switching the drive on and off shortens the life of the DC bus
charge circuit and the DC bus capacitors, and can cause premature drive failures. For the full performance life, refrain from switching the
drive on and off more than once every 30 minutes.
Note: Refer to Single-Phase Derating on page 247
Refer to Input Fuse Installation on page 347
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Factory Recommended Branch Circuit Protection

WARNING! Fire Hazard. Install adequate branch circuit protection according to applicable local codes and this manual. Failure to comply
could result in fire and damage to the drive or injury to personnel. The device is suitable for use on a circuit capable of delivering not more
than 100,000 RMS symmetrical amperes, 240 Vac (200 V class) and 480 Vac (400 V class), when protected by branch circuit protection
devices specified in this manual.
Branch circuit protection shall be provided by any of the following: Non-time delay Class J, T, or CC fuses sized at 300% of the drive input
rating, or Time delay Class J, T, or CC fuses sized at 175% of the drive input rating, or MCCB sized at 200% maximum of the drive input
rating.
Yaskawa recommends installing branch circuit protection according to maintain compliance with UL508C. Semiconductor
protective type fuses are preferred. Alternate branch circuit protection devices are also listed in this manual.
Recommended Branch Circuit Protection on page 336
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Main Circuit Terminal Functions

Terminal
200 V
Class
400 V
Drive Model
Class
600 V
Class
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
B1
B2
+2
+1
–
+3
Note: Use terminals B1 and – when installing a CDBR-type braking unit on drives with built-in braking transistors (Models 2A0004 to 2A0138,
4A0002 to 4A0072, and 5A0003 to 5A0052).
YASKAWA TOEP YAIP1W 01A YASKAWA AC Drive - iQpump1000 Quick Start Guide
for applying and protecting the drive when using single-phase input power.
for details on fuse selection.
Table 3.1 Main Circuit Terminal Functions
2A0004 to 2A0081 2A0110 to 2A0138
4A0002 to 4A0044 4A0058, 4A0072
5A0003 to 5A0032 5A0041 to 5A0052
Main circuit power supply input
Drive output
Braking resistor
• DC link choke
connection
(+1, +2)
(remove the
shorting bar
DC power supply
between
input
+1 and +2)
(+1, −)
• DC power supply
input
(+1, −)
Not available
For 200 V class: 100 Ω or less
For 400 V class: 10 Ω or less
For 600 V class: 10 Ω or less
for details.
Type
2A0169 to 2A0415
4A0088 to 4A0675
5A0062 to 5A0242
Not available
Not available
• DC power supply
input (+1, −)
• Braking unit
connection (+3, −)

3.6 Main Circuit Wiring

Refer to Factory
Function
Connects line power to the drive
Connects to the motor
Available for connecting a braking
resistor or a braking resistor unit option
For connecting:
• the drive to a DC power supply
(terminals +1 and – are not EU/CE
or UL approved)
• dynamic braking options
• a DC link choke
Grounding terminal
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