3-38 Receiving & Installation MN715
Pre-Operation Checklist Check of Electrical Items
1. Verify AC line voltage at source matches control rating.
2. Inspect all power connections for accuracy, workmanship and tightness and
compliance to codes.
3. Verify control and motor are grounded to each other and the control is
connected to earth ground.
4. Check all signal wiring for accuracy.
5. Be certain all brake coils, contactors and relay coils have noise suppression.
This should be an R-C filter for AC coils and reverse polarity diodes for DC
coils. MOV type transient suppression is not adequate.
Check of Motor and Couplings
1. Verify freedom of motion of motor shaft.
2. Verify that the motor coupling is tight without backlash.
3. Verify the holding brakes if any, are properly adjusted to fully release and set to
the desired torque value.
Power Up Procedure If you are not familiar with programming Baldor controls, refer to Section 4 of this manual
before you apply power to the control.
Note: The following procedure adjusts the minimum recommended parameter
values to allow operation of the control in Keypad mode for initial start-up only.
1. Verify that any enable inputs to J4-8 are open.
2. Turn power on. Be sure no faults are displayed on the keypad display.
3. Set the Level 1 Input block, Operating Mode to “Keypad”.
4. Be sure the Level 2 Protection block, Local Enable INP parameter is OFF and
the Level 2 Protection block, External Trip parameter is OFF.
5. Set the Level 2 Output Limits block, “Operating Zone” parameter as desired
(STD CONST TQ, STD VAR TQ, QUIET CONST TQ or QUIET VAR TQ).
6. Set the Level 2 Output Limits block, “MIN Output FREQ” parameter.
7. Set the Level 2 Output Limits block, “MAX Output FREQ” parameter.
Note: JP1 is in position 2–3 as shipped from the factory (<120Hz operation).
For operation with MAX Output FREQ >120Hz, change the position of
JP1 to pins 1–2. Refer to Figure 3-1 for jumper location.
8. If the desired peak current limit setting is different than is automatically set by
the Operating Zone, set the Level 2 Output Limits block, “PK Current Limit”
parameter as desired.
9. Enter the following motor data in the Level 2 Motor Data block parameters:
Motor Voltage (input)
Motor Rated Amps (FLA)
Motor Rated Speed (base speed)
Motor Rated Frequency
Motor Mag Amps (no load current)
10. If External Dynamic Brake hardware is used, set the Level 2 Brake Adjust
block, “Resistor Ohms” and “Resistor Watts” parameters.
11. Set the Level 1 V/HZ Boost block, “V/HZ Profile” parameter for the correct V/Hz
ratio for your application.
12. If the load is a high initial starting torque type, the torque boost and accel time
may need to be increased. Set the Level 1 V/HZ Boost block, “Torque Boost”
and the Level 1 Accel/Decel Rate block, “Accel Time #1” as required.
13. Select and program additional parameters to suit your application.
The control is now ready for use in keypad mode or the terminal strip may be wired and
the programming changed for another operating mode.