KB Electronics KBMK-24DF - Manual (Page 12)

12
Be sure to properly fuse each AC line conductor that is not at ground potential. Do not fuse neutral or
grounded conductors. A separate AC line switch or contactor must be connected as a disconnect so
that each ungrounded conductor is opened. For fuse or circuit breaker selection, see Table 2, on page
7. Also see Section 6.1, on page 12.
The drive is designed with a removable cover. To open the cover, the two front cover screws must be
removed. After mounting the drive and making all connections, install and tighten the four front cover
screws to 5 in-lbs (6 kg-cm). Do not over tighten.
TABLE 4
DRIVE TERMINAL BLOCKS WIRE AND TIGHTENING TORQUE SPECIFICATIONS
Maximum Wire Size (Cu)
Recommended
Tightening Torque
Terminal Block Description AWG mm 2 in-lbs kg-cm
TB1 AC Line Input and Motor Wiring 12 3.3 7 8
TB2
Multi-Function Output Relay
Contacts
16 1.3 3.5 4
6.1 AC LINE INPUT CONNECTION (See Warning, on page 11): Connect the AC line input to Terminal
Block TB1 (Terminals "L1", "L2"), as shown in Figure 8. See Table 2, on page 7.
Application Note: If operation with a Ground-Fault Circuit-Interrupter (GFCI) is required, see Function
No. 0.04, on page 22.
Note: The drive is factory set for 208/230 Volt AC line input (Jumper J1 not installed). For 115 Volt AC
line input, install Jumper J1 (supplied). See Section 7, on page 14.
AC Line Fusing: The drive does not contain line fuses. Most electrical codes require that each
ungrounded conductor contain circuit protection. Do not fuse neutral or ground connections. It is
recommended to install a fuse (Littelfuse 326, Buss ABC, or equivalent) or a circuit breaker (Square D
QOU or equivalent) in series with each ungrounded conductor. Do not fuse motor leads. For the
recommended fuse size, see Table 2, on page 7.
Connect the drive in accordance with the National Electrical Code requirements and other local codes
that may apply to the application.
FIGURE 8
AC LINE INPUT, MOTOR, AND GROUND CONNECTIONS