2 — INSTALLATION AND WIRING
pg. 19
Return to TOC Curtis AC F4-A Motor Controller – August 2020
Power Supply Outputs
The 5-volt and 12-volt power supplies provide auxiliary power for low power circuits such as
electronic throttles, displays/gauges, and motor-position feedback devices. e corresponding ground
is the controller I/O ground circuit, GND (pins 7 & 18). Typically, the 5-volt supply is for the motor
feedback device (encoder or Sin/Cos sensor) as illustrated in the wiring diagrams, Figures 6 and 7.
For sensors and devices that can use 12 volts, the available supply current is the same. Use VCL to
monitor the output currents for detecting sensor or vehicle-harness wiring faults. Each supply has
parameter adjustable min/max current thresholds. By default, the 5-volt supply is on (1) and the
12-volt supply is o (0).
Table 9 Power-Supply Outputs Electrical Specifications
Signal Name Pin Output Voltage Output Current
5 Volt Supply 26 5 Volts ± 5%
100 mA
1
Measurement Range
2 – 105 mA
12 Volt Supply 25 12 Volts ± 15%
200 mA
1
Measurement Range
0 – 205 mA
VCL Functions VCL Monitor Variables
External_5V_Supply
External_5V_Current
External_12V_Supply
External_12V_Current
1
Total current from both 5 V and 12 V supplies is 200 mA
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