Yaskawa J1000 Compact V/f Control Drive - Manual (Page 184)

7.4 Installing Peripheral Devices
This section describes the proper steps and precautions to take when installing or connecting
various peripheral devices to the drive.
Refer to peripheral device manual for detailed installation instructions.
NOTICE: Use a class 2 power supply (UL standard) when connecting to the control terminals. Improper
application of peripheral devices could result in drive performance degradation due to improper power supply.
u Installing a Molded Case Circuit Breaker (MCCB) and Earth
Leakage Circuit Breaker (ELCB)
Install an MCCB or ELCB for line protection between the power supply and the main circuit
power supply input terminals R/L1, S/L2 and T/L3. This protects the main circuit and devices
wired to the main circuit while also providing overload protection.
Consider the following when selecting and installing an MCCB or ELCB:
• The rated current of the MCCB or ELCB should be 1.5 to 2 times the rated output current
of the drive. Use an MCCB or ELCB with operation characteristics that do not trip the
MCCB or ELCB faster than the drive overload protection (shuts off the drive after 1 minute
of operation at 150% of the drive rated current).
• If several drives are connected to one MCCB or an ELCB that is shared with other
equipment, use a sequence that shuts the power OFF when errors are output by using
magnetic contactor (MC) as shown in the following figure.
Drive
Power
Supply
R/L1
MB
MCCB MC
MC
MC
MC
S/L2
T/L3
SA
Figure 7.2 Connecting an MCCB
7.4 Installing Peripheral Devices
184 YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide