Baldor iMN1800 manual Lmcf Series Brushless Linear Cog Free Servo Motor, Air Gap Spacing

LMCF Series Brushless Linear Cog Free Servo Motor

1.Install the coil and magnet assemblies. While mounting the coil, be sure to adjust coil assembly so it is centered within the magnet assembly with equal air gap in the vertical and horizontal positions. See Figure 2-6.

2.Verify that the coil assembly is centered within the magnet assembly with equal air gap in the vertical and horizontal positions along its entire length of travel. The coil assembly must never be allowed to touch the magnets at any point from one end of travel to the other.

Note: For modular magnet mounting, magnets are mounted end–to–end without spacing. The mounting hole pattern is repeating and is unaffected by magnet segments. Hole pattern repeats across joining ends of magnets.

Multiple Coil Assembly Operation

In addition to maintaining an air gap, multiple coil assemblies must also maintain a spacing factor of 2.4″ . In other words, the space between coil assemblies may vary, however, the distance from the front end of the first coil assembly to the front end of the next must be a multiple of 2.4″ . See Figure 2-6.

Ensure that this factor is established at the time of installation.

Figure 2-6 Air Gap Spacing
Coil Assembly	Mounting Plate
Vertical Air Gap
Horizontal Air Gap	Horizontal Air Gap
	Magnet Assembly
Vertical Air Gap	Machine Base

Operation Considerations The motor must always be operated within the specified operating parameter limits. Exceeding those limits will permanently damage the motor.

The motor must never touch the magnets during operation. Equal horizontal and vertical air gap must be maintained.

Remove the shim that sets the air gap between the motor and the magnets prior to operation.

Note: Be aware that the total bearing load includes the magnetic attractive force.

The following steps must be completed to ensure safe and proper operation.

1.Verify that all electrical wiring and cables are properly connected. Refer to the manual provided with the control for this information.

2.Adjust the servo drive current to match the motor’s current specification.

3.Refer to the motor specifications for operating parameters. Adjust the control parameters as necessary to the motor data specifications.

4.Adjust the control for the proper P.I.D. loop tuning. Begin at a low gain setting and increase the gain as necessary.

5.Strain relieve the wires prior to operating.

AY1763A00 Leadwire Connection

Motor Cable			Hall Cable		Limit Cable
Signal Name	Wire Color		Signal Name	Wire Color	Signal Name	Wire Color
	LinDrive	Trap
Motor Phase A (U)	Red	Black	Hall 1	White	Limit + Output	White
Motor Phase B (V)	White	Red	Hall 2	Red	Limit – Output	Red
Motor Phase C (W)	Black	White	Hall 3	Black	Home Output	Black
Motor Ground	Green		Hall Ground	Green	Limit & Home PWR *	Brown
Thermal Switch+	Blue		Hall +5VDC	Brown	Limit & Home GND	Green
Thermal Switch–	Orange

* Limit & Home power is +4 to +24VDC.

Note: Motor phasing is for LinDrive or MintDrive. Other controls may require different phasing (such as most trap drives (U) Black, (V) Red, (W) White). Phase angle between phases is 120 degrees.

2-8 Installation & Operation MN1800