Power Supply

 

 

 

Overvoltage Protection

 

Power Consumption

 

 

In this control unit, there is only one power supply pin (X1.24).

The ground pin (X1.1) is the recommended pin for the power supply return line. 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

+12/+24 VDC (+8,5…33 VDC)

Ground (for supply voltage)

X1.1

GND

I/O ground

X1.30

X1.33

GND

Supply outputs

Reference supply (for external devices)

X1.28

X1.29

+5 VDC / max 270 mA

(max total for all pins together)

 

 

 

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

 

 

Electrical characteristics

Symbol

Parameter

Conditions

Min

Max

Units

VI

Nominal Input voltage

 

8,5

33

V

ITOT-max

Max Total Current Output

 

 

10

A

VI-Load-dump

Max Input transient Voltage level

(Note 1)

 

100

V

VI-max

Max Continuous Input Voltage Level

(Note 2)

-0,5

40

V

VI-ovp

Overvoltage Protection Cut-off Level

 

33

36,5

V

 

Overvoltage Cut-off Hysteresis

 

typ. 2

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 ISO7636-2: 2004 pulse 5, Us=+70V

Note 2: If the voltage is less than 8,5 V or higher than 33 V, the control unit is in non-operational state.