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bin mulyadin · Junior Joined: 28 Dec 2011 Posts: 18

Hi All,

I am currently working on a Simatic S5 upgrade to the S7-400. The currently installed configuration PLC is connected to 3 LENZE 9300 drives / inverters using interbus. In the PLC there is IBS module S5 DSC / I-T and in the inverter there is 2111 module.

Communication using Drivecom protocol with 32 bit input configuration and 32 bit output.

The configuration I use for S7-400 uses profibus (port X2 from CPU) and module 2133 in LENZE.

From what I know there are two communication channels between PLC and Lenze ie

1. Process Data channel

2. Parameter Data channel

Process Data channel using IO address level, for example for one drive using address:

QW 84 Control Word; IW 84 Status Word

QW 86 Speed setpoint (N-TRIM); IW 86 feeedback actual speed

While Paramater Data channel using Data Block where PLC write and read parameter of Drive / Inverter using standard block from IBS S5 DSC / I-T.

Question:

1. At motor start there is an awkwardness, the speed setpint that PLC S7 send is received differently when using S5. For example when using S5 QW86 = -96 and at LENZE AIF-IN.W1 = -95947, but when using S7 QW = -96 and in LENZE AIF-IN.W1 = -5859 so the motor rotates very slowly.

2. Where in LENZE we can monitor Control Word sent PLC. eg PLC QW84 = 2006 (hex), where can we see it in LENZE?

That is for now, more question may come latter.

Regards

bin mulyadin

abel11 · Member Joined: 19 May 2014 Posts: 218

You have two options...
1. Rescale S7 QW for having the same output
2. modify Gain and offset AIF−IN.W1..see picture 2.. 3.
AIF−IN.W1 a C0856/1 dec [%] − − − +16384 = +100 %

The input signals of the 8−byte user data of the AIF object are converted into corresponding signal
types. The signals can be used via further function blocks.
Byte 1 and 2
Byte 1 and 2 form the control word for the controller. The bits 3, 8, 9, 10, and 11 of these bytes are directly transferred into the function block DCTRL where they are linked with further signals. The
other 11 bits can be used to control further function blocks.
Byte 3 and 4
form the signal to AIF−IN.W1.
Byte 5, 6, 7, and 8
This user data can be interpreted as different signal types. According to the requirement this data can
be evaluated as up to two analog signals, 32 digital signals or one angle signal. Mixed forms are also
possible.
Migration Simatic S5 - Lenze 9300 (Interbus) to S7-Lenze 930

Migration Simatic S5 - Lenze 9300 (Interbus) to S7-Lenze 930

Read carefully manual
http://download.lenze.com/TD/EVS93xx__9300%20Servo%20inverter%20Extension__v2-0__EN.pdf
http://download.lenze.com/TD/Drive%20PLC%20Developer%20Studio__9300%20Servo%20PLC%20 (V8.x)__v5-0__EN.pdf

bin mulyadin · Junior Joined: 28 Dec 2011 Posts: 18

Thank you for replying in detail, I really appreciated.

I am thinking the same (about scaling problem) at the first time. But as I understand that this "EVS93xx__9300 Servo inverter Extension__v2-0__EN" manual when talking about AIF-IN means Interbus or Profibus. So scaling is has tobe the same for Interbus or Profibus, right?

Please advice
bin mulyadin