Special Signals

Available 'Special Signals'

Index

Data type

Meaning

1

UNS16

Message counter1)

2

UNS08

Checksum2)

3

UNS16

Status word formula student 3)

4

UNS16

Control word formula student 4)

5

SGN16

Actual speed value in 1/rpm

6

SGN16

Speed setpoint in 1/rpm

7

SGN16

Motor temperature in 0,1 °C

8

SGN16

Inverter, cold plate temperature in 0,1 °C

9-12

-

-

13

SGN16

Positive torque limit in 0,1 % Mn

14

SGN16

Negative torque limit in 0,1 % Mn

15-16

-

-

17

SGN16

Torque setpoint in 0,1 % Mn

18

SGN32

Speed setpoint in 0,0001/rpm

19

SGN16

Actual torque value in 0,1 % Mn

20

SGN32

Actual speed value in 0,0001/rpm

21

UNS32

Diagnostic number

22

UNS32

Error info 1

23

UNS32

Error info 2

24

UNS32

Error info 3

25

SGN16

Raw data for calculating 'actual torque current' Iq Siehe 'Units'.

Value of 16384 correspond to ID110 'Converter peak current'

26

SGN16

Raw data for calculating 'actual magnetizing current' (field weakening current) Id Siehe 'Units'.

Value of 16384 correspond to ID110 'Converter peak current'

27

SGN16

IGBT temperature in 0,1 °C

1)

Message counter

The message counter can be activated as an additional monitoring. The receiver checks the validity of the message by means of the message counter.

For each transmit message, the inverter will set a 16 bit overflowing counter. Its value is incremented with every sending the message and can be evaluated by the receiver.

An error of a receive message will be detected if five successively received messages contain the same count. A simple step of the counter value will not cause an error.

2)

Checksum

To any message, a checksum can be configured. It is calculated across each byte of the message with the bits relevant for the checksum set to 0.

If a message with incorrect checksum is received, it will be ignored. If two faulty checksums are received successively, the drive will generate an error message.

For example, if the checksum is configured in byte 8, it is calculated as follows:

Byte8 = Byte1 XOR Byte2 XOR Byte3 XOR Byte4 XOR Byte5 XOR Byte6 XOR Byte7 XOR 00h

3)

Content of the 'AMK_Status' status word

The system status and the command acknowledgments are displayed via the status word.

Name Offset Length in bits Meaning
AMK_bReserve 0 8 Reserved
AMK_bSystemReady 8 1 System ready (SBM)
AMK_bError 9 1 Error
AMK_bWarn 10 1 Warning
AMK_bQuitDcOn 11 1 HV activation acknowledgment
AMK_bDcOn 12 1 HV activation level
AMK_bQuitInverterOn 13 1 Controller enable acknowledgment
AMK_bInverterOn 14 1 Controller enable level
AMK_bDerating 15 1 Derating (torque limitation active)

4)

Content of the 'AMK_Control' control word

The control word can be used to trigger the following commands in the inverter:

Name Offset Length in bits Meaning
AMK_bReserve 0 8 Reserved
AMK_bInverterOn 8 1 Controller enable
AMK_bDcOn 9 1 HV activation
AMK_bEnable 10 1 Driver enable
AMK_bErrorReset 11 1 Remove error*
AMK_bReserve 12 4 Reserved

*Setpoints must have the value 0, as otherwise the 'Remove error' command will not be executed.