AEM Performance Electronics
Phone (8am-5pm M-F PST): 310-484-2322
2205 W 126
th
Street, Unit A
Fax: 310-484-0152
Hawthorne, CA 90250
Main HVIL Loop
A completed Main HVIL loop is required for high voltage
contactor function.
1. Go to the Setup-Inputs group and select the
HVILMain tab.
2. Use the example wiring diagram to add the loop
to your VCU.
IMD Setup
The high voltage system in an electric vehicle is designed
to be ungrounded (floating) with respect to the vehicle
chassis (frame). Insulation faults can cause electric shock,
personal injury and even death. An insulation monitoring
device (IMD) must be used to protect against these faults.
for more
information.
1. Go to the Setup-Inputs group and select the IMD
tab.
2. Read all notes and Description text and configure
for your application.
VCU Outputs Setup
In most cases, there are options for output control. In cases where an AEM PDU-8 control output is available, we
recommend using the PDU-8 over other methods. The current limiting and fault detection features increase safety and
reliability. This is especially important for high voltage contactor control.
6/3/2020, Revision C
AEM EV VCU200 User Guide
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