Status and control signals

The operation state of the drive system will be commanded and acknowledged by means of control and status signal.

The STO input must be supplied with 24 V DC on the user side. Any other signals and states can controlled and read by binary inputs and / or fieldbus.

Status signals

Signal

Name

Meaning

SBM 'System ready message'

After system booting without an error, SBM will be set and shows that the system is free of error.

In case of an error SBM will be reset and a diagnosis message will be generated. The system reaction in case of an error (e.g. running out, brake down according ID32873 'Deceleration ramp RF inactive', system booting abort) depends on the kind of error. (See document Diagnostic messages (Part no. 25786), chapter Meaning of the diagnostic messages.

The diagnosis messages can be read out with the software AIPEX PRO or read and evaluated by a controller. After the error cause is removed a system booting (ID33730 'System booting') has to be executed.

QRF

'Acknowledgement controller enable'

QRF acknowledges the active control mode of the drive. Setpoints can be set depending on the configured operation mode (ID32800...). If QRF = 0 the drive is free of torque and no control mode is active.

 

Signal

Hardware

LED

Terminal

Parameter

Code

Reflection

PLC access

SBM

AMKASMART

H1 'green'

X04 Pin 6

(BA3)

ID32867

33029

ID34120

Bit 2

FB STANDARD_ AXIS

QRF

AMKASMART

H1 'green flashing''

X04 Pin 5

(BA2)

ID32866

33031

ID34120

Bit 1

FB STANDARD_AXIS

Control signals

Signal

Name

Meaning

FL

'Clear error'

FL causes a system booting after the reason for an error message is remedied and the drive is still in error state SBM = 0). The sucessfully finished system booting is acknowledged with the SBM = 1 signal. Clear error can only be executed if RF = QRF = 0 by a pulse signal ≥1 ms on the binary input or via fieldbus interface.

Clear error can be executed as follow:

  • Configuration FL to an binary input
  • ID99 'Diagnosis reset status class 1'
  • ID32913 'Clear error'

RF

'Controller enable'

RF (signal-edge controlled) causes a system booting if at least one parameter has been changed before. RF activates the motor control in the current operation mode (e.g ID32800 'AMK main operating mode'. The motor is energized, setpoints are processed and the acknowledgement signal QRF will be set. RF can only be activated if SBM = QUE = 1. If RF is set, the power output stage are active. For devices with the option 'external power output stage enable' additionally EF/FE2 = 1 must be set. If the prerequisites are not fulfilled, the device generates an error message and resets SBM if someone try to set RF.

IF RF is withdrawal during operation the motor is ramped down according ID32782 'Deceleration ramp RF inactive' until standstill (≤ 6 RPM) and unenergized. QRF will be reset.

If a motor holding brake is active the signals RF and QRF on/off will be delayed device internal, depending on parameter ID206 'Drive on delay time' and ID207 'Drive off delay time'.


 
STO Safe torque off

STO (safe torque off) is a safety function according to DIN EN 61800-5-2 and corresponds to an uncontrolled stopping according to EN 60204-1, stop category 0.

In the event of a requested STO, the motor is safely, immediately and automatically separated from the energy supply in the inverter if the IGBT control is safely interrupted. The motor is prevented from starting unexpectedly. If the STO is actuated while moving, the drive coasts to stop.

The function is suitable up to performance level (PL) d according to EN 13849-1 if the signals are interrupted in two channels with a switching device.

If the STO signal is looped through several drives, the STO state applies to all drives in this group. If a drive is in an error state due to a drive error (SBM = 0), it has no effect on the STO state of the other drives in this group.

 

Signal

Hardware

Terminal

Parameter

Code

Reflection

PLC access

RF

AMKASMART

X04 Pin 2 (BE1)

ID32978

32904

ID34100 Bit0

FB STANDARD_AXIS

FL

AMKASMART

X04 Pin 3 (BE2)

ID32979

33913

ID34100 Bit1

FB STANDARD_AXIS

Supply motor holding brake

Supply 24 VDC

Hardware

Terminal

Supply motor holding brake

AMKASMART iX, iDT5

X1A 24B und 0B

Supply motor holding brake AMKASMART iC X08 24B und 0B

For detailed information: See documentDecentralized drive technology iC / iX / iDT5, Part no. 203445. Chapter 'Motor holding brake' and 'Control of the motor holding brake'.