
Installation and Configuration
Ndrive HL User’s Manual
2-2
www.aerotech.com
2.2. Power
Connections
The Ndrive HL may powered by one or two separate AC voltages. One for motor bus
power and optionally a second for control power, as described in the following two sub-
sections. If the optional control power input is present, it must be powered.
2.2.1. Control Power Connections (-AUXPWR)
The -AUXPWR option allows the Ndrive HL to remain operational when the motor
power is removed, such as when an emergency stop circuit is required. If the Ndrive HL
was purchased with the -AUXPWR option, a separate AC input has been included on the
amplifier. The internal power supply of the Ndrive HL requires a minimum of 85 VAC
input to operate properly. The figure below shows the connection to the –AUXPWR AC
input. The connection is made to via a three terminal connector. See Section 2.4 for
various typical AC wiring options. This optional input is used when an external
emergency stop circuit is present. See Section 2.3 for a typical ESTOP wiring
configuration.
The AUXPWR control power inputs (AL1, AL2) are optional, but
must be powered if
present
. These inputs are typically used when an external emergency stop circuit is
present. Connections to the AL1, AL2 inputs and the protective Ground should be at
least 1.62814 mm (#14 AWG) wire rated @ 300 V (3 Amp external fusing may be
required for AL2, AL1 is fused internally at 3 Amps).
Figure 2-1.
-AUXPWR Option
Table 2-1.
Optional Aux Supply AC Input (for external E-Stop)
Pin
Description
Wire Size
AL1
Optional 85-240 VAC Control Power Input
1.62814 mm (#14 AWG)
AL2
Optional 85-240 VAC Control Power Input
1.62814 mm (#14 AWG)
Protective Ground (Required for Safety)
1.62814 mm (#14 AWG)
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com