3.8 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.
u
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. Refer to Factory
Recommended Z1000 AC Drive Branch Circuit Protection on page 256 for details.
u
Main Circuit Terminal Functions
Table 3.1 Main Circuit Terminal Functions
Terminal Type
Function Page
200 V
Class
Drive
Model
2A0011 to 2A0273 2A0343 and 2A0396
400 V
Class
4A0005 to 4A0302 4A0361 to 4A0590
R/L1
Main circuit power supply input Connects line power to the drive 63S/L2
T/L3
U/T1
Drive output Connects to the motor 63V/T2
W/T3
+1
–
DC power supply input (+1 and –) or
12/18 pulse rectification
For connecting peripheral devices –
–
+3
<1>
– – – –
+M
12/18 pulse rectification
<2>
– Input for 12/18 pulse rectification –
-M
For 200 V class: 100 Ω or less
For 400 V class: 10 Ω or less
Grounding terminal 87
<1> Not used.
<2> +M and –M are for rectification purposes only. Do not use for dynamic braking or line-regeneration.
3.8 Main Circuit Wiring
YASKAWA ELECTRIC TOEP C710616 45F YASKAWA AC Drive – Z1000 User Manual
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Electrical Installation
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