Section 1
General Information
3-16 Receiving & Installation
MN722
AC Input Power & Motor Connections
AC power and motor connections are different for controls that have a model number
suffix of “EL” and “EK”. Be sure to use the correct procedure for your control.
Caution:
Do not use power factor correction capacitors at the input power
lines to the 22H Line Regen control. Installing power factor
correction capacitors may damage the control.
Note: “EK” Controls are input phase sensitive. Be sure all connections are correct.
“EL” suffix
The AC power and motor connections are shown in Figure 3-4. Overloads are not
required. The 22H control has an electronic I
2
t 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.
Caution:
Do not connect AC power to the Motor terminals T1, T2 and T3.
Connecting AC power to these terminals may result in damage to
the control.
Caution:
Baldor recommends not using “Grounded Leg Delta” transformer
power leads that may create ground loops and degrade system
performance. Instead, we recommend using a four wire Wye.
1.
Connect the incoming AC power wires from the protection devices to terminals
A1, B1 and C1 at the 3% line reactor.
2.
Connect A2, B2 and C2 3% line reactor terminals to the L1, L2 and L3 power
input terminals of the control.
3.
* Connect earth ground to the “ ” of the control. Be sure to comply with local
codes.
4.
Connect the three phase power leads of the AC motor to terminals T1, T2, and
T3 of the control.
5.
* Connect motor ground wire to the “ ” of the control. Be sure to comply with
all applicable codes.
*
Grounding by using conduit or panel connection is not adequate. A separate
conductor of the proper size must be used as a ground conductor.
Summary of Contents for 22H series
Page 5: ...Section 1 General Information iv Table of Contents MN722...
Page 105: ...Section 1 General Information 5 22 Troubleshooting MN722...
Page 109: ...Section 1 General Information 6 4 Manual Tuning the Series 22H Control MN722...
Page 137: ...Section 1 General Information A 8 Appendix A MN722...
Page 138: ...Appendix B Appendix B 1 MN722...
