41
Technical data
and startup
8.3.1
Pin 1 GND (ground terminal 31)
INFORMATION
If DMC5x4 control signals are connected with other vehicle components, then the connection to the
vehicle's ground must take place at this pin.
Internal wiring
1
M
Ω
24
μF
Pin 1 GND
Housing
48V
Direct ground connection of the inverter's control electronics.
The signal ground is connected with the inverter housing through a few components. These components serve for
self protection and constitute a defined connection.
8.3.2
Pin 2 AUX
(
Wiring system terminal 30)
INFORMATION
Aside from the HV inputs, this 12 V inlet is also necessary for the functioning of the inverter!
The inverter is generally ready for operation when the following requirements are met:
Voltage is applied at the HV inlet (> V
DCmin
)
Voltage is applied at pin 2 (terminal 30)
Pin 17 and pin 18 are active,
see chapt.
8.3.7
Pin 17 EXT AW1, Pin 18 EXT AW2 (External shut down path 1 + 2)
Pin 1 (terminal 31) is connected
No error messages present
Internal wiring
1
.3
u
F
Pin 2
AUX
100uH
1.5A
5V/uP
36V
ISU
+15V
if HV present
Internal
Supply
20
uF
P
in
3
E
N
The internal 5 V supply is generated with this pin and offers the following possibilities:
CAN communication
Microprocessor programming (firmware)
Voltage measurement
As soon as HV is applied, LV is released:
If HV voltage = 0 V, LV is loaded with </= 150 mA
