Motor Power Conductors; Protective Ground; Over-Current Protection - Aerotech BLM Series Hardware Manual

"u-channel" linear motor
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Hardware Manual
BLM
2.7.1. Motor Power Conductors
The motor power conductors must be sized to handle the electrical current requirements of the
motor (refer to
Section 1.1. Motor
Specifications). Select the wire insulation voltage rating based on
the maximum voltage that will be applied to the motor.

2.7.2. Protective Ground

The protective ground is a safety conductor that you must use to ground the motor case. The
protective ground conductor must have a current carrying capacity at least equal to the carrying
capacity of the motor wires. The standard insulation is "Green/Yellow" and must be rated for the
maximum voltage applied to the motor winding. The protective ground wire is typically bundled with
the motor wires, but your system could require a separate protective ground wire.

2.7.3. Over-Current Protection

You will need to provide the motor with over-current protection to prevent the motor from
overheating. Use programmable current limits, traps, over-current protection circuitry, or fuses. Fuse
values should be selected according to the RMS current rating of the motor. For most applications,
you should use slow-blow type fuses.
When the motor is part of an Aerotech system that uses an Aerotech controller and drive, use the
"A
" continuous current rating to set the motor over-current protection fault (refer to
Section
1.1.). If
pk
the motor is not installed in a system configured by Aerotech, you must provide the over-current
protection.
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