“EK” suffix (“EK” Controls are input phase sensitive. Check all connections).

The AC power and motor connections are shown in Figure 3-4. Overloads are not required. The 22H control has an electronic I2t motor overload protection. If motor overloads are desired, they should be sized according to the manufacturers specifications and installed between the motor and the T1, T2 and T3 terminals of the control.

1.Connect the incoming AC power wires from the protection devices to terminals A1, B1 and C1 of the 3% line reactor.

2.Connect A2, B2 and C2 3% line reactor terminals to the L1, L2 and L3 of the boost regulator.

3.Connect X1, X2 and X3 boost regulator terminals to X1, X2 and X3 of the control.

4.* Connect earth ground to the ” of the control. Be sure to comply with local codes.

5.Connect boost regulator terminals L1A, L2A and L3A to Filter terminals J1-1, J1-2 and J1-3.

6.Connect filter terminals J2-1, J2-2 and J2-3 to control terminals L1A, L2A and L3A. * Grounding by using conduit or panel connection is not adequate. A separate

conductor of the proper size must be used as a ground conductor.

Figure 3-4 “EK” Control 3 Phase AC Power and Motor Connections (Size D, E & F)

 

L1

L2

L3

Earth

 

 

 

 

 

 

L1

L2

L3

Note 1

* Circuit

 

 

Alternate *

 

 

 

 

Fuse

 

Note 1

 

Breaker

 

 

 

 

 

 

Connection

 

 

 

 

 

 

 

 

Note 2

 

 

 

 

 

 

 

A1

B1

C1

A1

B1

C1

Note 3

3% Line

 

 

* Optional components not provided with 22H Control.

Reactor

 

 

 

 

 

 

 

 

 

 

 

 

A2

B2

C2

 

 

 

Note 2

 

 

 

 

 

 

 

 

 

 

 

 

L1

 

X1

 

Phase Sensitive Inputs

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

 

X2

 

 

 

 

 

 

 

Boost

L3

 

X3

 

 

 

 

 

 

Notes:

Regulator

 

 

 

 

 

 

 

 

 

 

L1A

L2A

L3A

 

 

 

 

 

 

1. See “Protective Devices” described

Filter

 

 

X1

X2

X3

previously in this section.

 

 

J1

J2

 

 

 

 

 

 

 

 

2. Shield wires inside a metal conduit.

 

 

1

 

1

L1A

 

 

 

3. 3% Line Reactor is required at input.

 

 

 

 

Baldor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Phase Sensitive Inputs

 

2

 

2

L2A

Series 22HXXX-EK

 

 

3

 

3

L3A

 

Control

 

 

 

 

 

 

 

 

Control Size

Boost Regulator to

Filter to Control

 

 

 

 

 

 

Filter (5 ft. max.)

(10 ft. max.)

 

 

 

 

 

 

 

D & E

14AWG (2.08 mm2)

14AWG (2.08 mm2)

 

 

 

 

 

 

F

10AWG (5.26 mm2)

10AWG (5.26 mm2)

 

 

 

 

 

 

See Recommended Tightening Torques in Section 7.

 

 

 

 

 

 

 

MN722

Receiving & Installation 3-11

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Baldor mn722 manual Baldor, Series 22HXXX-EK, Filter