Power Supply

 

Overvoltage Protection

 

Power Consumption

 

 

Use the power ground pins for the power supply return lines. The following table shows the power supply pin locations:

 

Power supply pins

Designation

Connector / pin number

Potential

Supply voltage (for logic and power)

X1.24

X1.25

X1.26

+12/+24 VDC (+8,5…33 VDC)

Power ground pins

X1.1

X1.2

X1.3

GND (10 A/pin)

I/O ground

X1.8

X1.27

X2.3

X2.4

X2.10

X2.11

X2.12

X2.15

X2.16

X3.2

X3.3

X3.4

X3.8-3.12

X3.14

X3.15

X3.23

GND (10 A/pin)

Supply outputs

Reference supply (for external devices)

X2.5

X3.20

+5 VDC / max 270 mA

(max total for all pins together)

 

 


To ensure correct measurement, reserve separate GND pin(s) for AI pins and don't use it/them for any other purposes. For more information, see section I/O Cabling.

 

Always use an external fuse to protect the control unit. The fuse is needed for reverse voltage and overload protection.

For more information, see section Power Supply Cabling.

 

 

Electrical characteristics

Symbol

Parameter

Conditions

Min

Max

Units

VI

Nominal Input voltage

 

8,5

33

V

ITOT-max

Max Total Current Output

 

 

30

A

VI-Load-dump

Max Input transient Voltage level

(Note 1)

 

123

V

VI-max

Max Continuous Input Voltage Level

(Note 2)

-0,5

70

V

VOVP-Reg

Regulated Overvoltage threshold level

 

typ. 34

V

VUVP

Undervoltage Threshold Level

 

typ. 7,5

V

Supply voltage monitoring

VI-range

Nominal Input Voltage measuring range

 

0

46

V

Note 1: Load dump protection according to ISO 7637-2: 2004 pulse 5, Us=+123 V

Note 2: Limited functionality when the voltage is higher than the nominal. If the voltage is less than 7,5 V, the control unit is in non-operational state.