iC: [X08 / X09] 24 VDC supply voltage - Transmission

NOTE

Material damage!

Material damage due to overvoltage!

An overvoltage at the connections X08 and X09 (24 VDC) is not monitored and damages the device

Steps to prevent:

  • Comply with the specifications for the electronics supply voltage 24 VDC.
    (24 VDC ± 15 %, ripple max. 5 %)

Description:

X08: 24 VDC supply voltage supply line for electronics and STO / motor holding brake

X09: 24 VDC supply voltage transmission for electronics and STO / motor holding brake

External power supply units that provides the 24 VDC supply voltage for connections 24V and they must have a "safe isolation" (PELV) according to EN 61800-5-1. The 0 V potential must be connected with PE. The current of the 24V and supply must be limited to 6 A each by the user.


A power supply unit is integrated into the that supplies the 24 VDC from the DC bus for the electronics supply. The power supply unit is active when the SMD-DIP switch S2 is in the "ON" switch setting (delivery status for devices with an integrated power supply unit).

Significant prerequisite for certification of a machine with functional safety:

When using the functional safety the internal power supply unit must be deactivated (S2 = OFF), and the 24 VDC (for connections 24V and ) is provided externally with a PELV power supply, otherwise the conditions for the use of functional safety are not satisfied!

In the event of a failure of the 24 VDC supply to the electronics > 10 ms, the system ready message is internally reset.

 

Switch off the internal 24 VDC supply voltage from the DC bus with the switch S2

DANGER

Danger to life from electric shock!

The switch S2 is always on UZN potential and can lead to life-threatening DC voltage.
LED displays on the front, when indicating OFF, do not mean that the device terminals are voltage-free.
After switching off the mains, the buffer capacitors for the DC bus can still have a charge and lead to life-threatening DC voltage.

Steps to prevent:

  • After switching off, expect a discharge time of at least 5 minutes.
  • Measure the voltage in the DC bus between the UZP/UZN terminals to ensure that the terminals and S2 switch are voltage-free.
 

DANGER

Danger to life from touching electrical connections!

The permanent magnets of the rotor induce dangerous voltage at the motor connections when the axis rotates, even when the motor is not electrically connected. If the motor is connected to an inverter, the induced DC voltage is linked to the .

Steps to prevent:

  • Make sure that the motor shaft does not rotate.
  • Make sure that shock-hazard protection is installed at the motor connections.
  • Make sure that the terminals are free of voltage.
 

The S2 switch is located in the iC terminal box below the insulating paper in front of the terminal block. The insulating paper must be lifted carefully to reach the S2 switch.
 

 

Wiring for STO safety function according to EN 61800-5-2

Switch off the internal 24 VDC supply voltage from the DC bus with the switch S2

According to EN 61800-5-2 the error 'Short circuit between two conductors' will be excluded in the following cases:

Technical data

24 VDC supply voltage:

  • 24 VDC ± 15% PELV power supply acc. to IEC/EN 60950
  • Ripple max. 5%, with integrated switch-on current limitation
  • The 0 V potential of the power supply unit should be earthed at the central PE

Design

Type

Pole

Sort

Manufacturer

Designation

Terminal with tension spring connection

4

 

WAGO

739

Actuating tool: Screwdriver with a blade 2.5 x 0.4 mm

The cable is attached to the housing: Cable gland M25 x 1.5

Assignment

[X08]

Signal

Description

24V 1)

24 VDC supply voltage for electronics

0V

Reference potential for 24 VDC for electronics

24B 1)

Supply voltage 24 VDC for STO / motor holding brake

Signal level

Meaning

16 - 24 VDC

STO = inactive,
Motor holding brake = can be opened

0 - 5 VDC

STO = active,
Motor holding brake = close

The supply voltage directly controls the STO state and at the same time supplies an optional motor holding brake with power.

0B

Reference potential for 24B / transmission

1) 

The current of the 24V and 24B supply must be limited to 6 A each by the user.

[X09]

Signal

Description

24V 1)

24 VDC transmission

0V

Reference potential for 24 VDC

24B 1)

24 VDC transmission

0B

Reference potential for 24B

1) 

Please refer to the device description of the connected device for the pin assignment

Connection

Cable

4 x 0.5 mm2 / AWG 20, shielded

Max. conductor cross-section of the terminal

Flexible cable with a wire end sleeve with plastic collar: 1 mm2

Stripping length

5 - 6 mm

Shield connection

Apply on both sides