Configuration

INFORMATION

When the external backup voltage supply is used, the external backup voltage supply takes over the entire 24 V supply of the device.
The internal 24 V supply is then no longer active.

Check whether the available current from the electronics cover power supply unit is sufficient for the total current demand of all consumers:

  1. Determine the available current from the electronics cover power supply unit according to the following table:

Electronics cover

Available current
without external
24 V supply

Maximum current
with external
24 V supply

Size 1

Size 2 without fan

820 mA

1250 mA

Size 2 with fan

1180 mA

1600 mA

  1. Sum up the current demand of all consumers according to the following table:

Consumer

Current requirement

 

Electronics cover

(Basic requirement)

Size 1

Size 2 without fan

210 mA

Size 2 with fan

570 mA

1.

MOVILINK® DDI encoder (..Z)

120 mA

2.

Keypad (CBG..)

50 mA

3.

Safety technology

STO connected

0 mA

Internal STO jumpered

20 mA

/SBA option

90 mA

/SLA option without EI7C-FS

100 mA

/SLA option with EI7C-FS

250 mA

4.

Safe digital inputs F-DI

(Only for drive units with option /SLA or /SSA)

Max. 300 mA per F-DI

Max. 300 mA in total

5.

Digital inputs DI

(Sensor supply)

Max. 500 mA per DI

Max. 500 mA in total

6.

Digital outputs DO

Max. 50 mA per DO

Max. 100 mA in total

  1. Compare the total current demand of all consumers to the available current without external 24 V supply (i.e. 24 V through internal power supply unit):

If the total current demand of all consumers is greater than the available current from the electronics cover power supply unit, you must supply the drive unit with 24 V externally.

In this case, the specified maximum currents must not be exceeded.