User manual KB ELECTRONICS KBAC-SERIES

[. . . ] Installation & Operation Manual KBAC SERIES Adjustable Frequency Drives for 3-Phase AC Motors NEMA-4X / IP-65 Variable Speed / Soft-Start AC Motor Drive with Electronic Motor Overload Protection for Inverter Duty Motors* Washdown and Watertight for Indodor and Outdoor Use Rated for 208 ­ 230 and 400/460 Volt 50 & 60 Hz 3-Phase & PSC** AC Induction Motors from 1 HP thru 5 HP Operates from 115, 208/230 Volt and 400/460 Volt 50/60 Hz AC Line** This Manual Covers Models KBAC-24D, 27D, 29, 45, 48 See Safety Warning, on page 5. *** Note: The drive is factory set for 60 Hz motors. For 50 Hz motors, see Section 6. 1, on pages 16 ­ 17. The information contained in this manual is intended to be accurate. However, the manufacturer retains the right to make changes in design which may not be included herein. *UL approved as an electronic overload protector for motors. Special software is available ­ contact our Sales Department. [. . . ] Do not fuse neutral or grounded conductors. A separate AC line switch or contactor must be wired as a disconnect so that each ungrounded conductor is opened. For fuse or circuit breaker selection, see Table 5. To maintain the watertight integrity of the drive, be sure to use suitable watertight connectors and wiring which are appropriate for the application. Model KBAC-24D contains two mounting holes for standard 1/2" liquidtight fittings (not supplied) (one watertight plug is provided, if only one knockout is used). Models KBAC-27D, 29, 45, 48 contain two mounting holes for standard 1/2" liquidtight fittings (not supplied) and one mounting hole for standard 3/4" liquidtight fitting (not supplied) (two watertight plugs are provided, if only one knockout is used). The drive is designed with a hinged case so that when the front cover is open, all wiring stays intact. To open the cover, the four screws must be loosened so they are no longer engaged in the case bottom. After mounting and wiring, close the cover making sure that the wires do not get caught or crimped as the cover is closed. Tighten the four screws so that the gasket is slightly compressed. Do not overtighten. TABLE 5 ­ TERMINAL BLOCK WIRING INFORMATION Maximum Wire Size (Cu) Terminal Block TB1 TB2 Description AC Line Input and Motor Wiring Run/Fault Relay Output Contacts Model KBAC-24D KBAC-27D, 29, 45, 48 All AWG 12 12 16 mm 2 3. 3 3. 3 1. 3 Recommended Tightening Torque in-lbs 7 12 3. 5 kg-cm 8 14 3 5. 1 AC LINE INPUT CONNECTION ­ Wire the AC line input to Terminal Block TB1. GFCI Operation ­ Do not connect this drive to an AC power source controlled by a Ground Fault Circuit Interrupter. Special software is available for GFCI operation ­ contact our Sales Department. Note: The rated AC line voltage of the drive must match the actual AC line input voltage. On Models KBAC24D, 27D, the setting of Jumper J1 must match the AC line input voltage. FIGURE 7 ­ MODELS KBAC- 24D, 27D* AC LINE INPUT, MOTOR, AND GROUND CONNECTIONS TB1 MOTOR U V W L1 L2 AC LINE Motor 115, 208/230 Volt Single-Phase AC Line Input Ground (Earth) *Model KBAC-27D is rated 11/2 HP maximum with 115 Volt AC line input and 2 HP maximum with 208/230 Volt AC line input. Models KBAC-24D, 27D: Designed to accept single-phase (Terminals "L1", "L2") AC line input only. Rated for 208/230 Volt AC line input with Jumper J1 set to the "230V" position (factory setting). Rated for 115 Volt AC line input with Jumper J1 set to the "115V" position. 13 FIGURE 8 ­ MODELS KBAC-29*, 45, 48 AC LINE INPUT, MOTOR, AND GROUND CONNECTIONS Model KBAC-29 Only Wire the single-phase AC line input to Terminals "L1", "L2", as shown below. TB1 U V MOTOR W L1 L2 L3 AC LINE L1 L2 AC LINE L3 Motor 208/230, 400/460 Volt 3-Phase, 50/60 Hz AC Line Input Ground (Earth) 208/230 Volt Single-Phase, 50/60 Hz AC Line Input Ground (Earth) *Model KBAC-29 is rated 2 HP maximum with single-phase AC line input and 3 HP maximum with 3-phase AC line input. Model KBAC-29: Designed to accept single-phase (Terminals "L1", "L2") or 3-phase (Terminals "L1", "L2", "L3") AC line input. Rated for 208/230 Volt AC line input only. Models KBAC-45, 48: Designed to accept 3-phase (Terminals "L1", "L2", "L3") AC line input only. Rated for 400/460 Volt AC line input only. 5. 2 GROUND CONNECTION ­ Connect the ground wire (earth) to the Green Ground Screw. [. . . ] If the frequency range required is above 15 Hz, Boost adjustment is not necessary. To avoid motor winding overheating and failure, do not overboost the motor. Note: An unloaded motor with excessive boost will draw more current than a partially loaded motor. The boost voltage may be adjusted as follows: 1. [. . . ]