Changing the ramp-up and ramp-down times in operation
The ramping up and down time of the ramp-function generator can be changed during
operation. The scaling value can come, e.g. from the eldbus.
Requirements
• You have commissioned the communication between the converter and the control system.
• Free telegram 999 has been set in the converter and in your higher-level control system.
Expanding or freely interconnecting telegrams (Page 204)
• The control sends the scaling value to the converter in PZD 3.
Procedure
1. Set p1138 = 2050[2].
This means that you have interconnected the scaling factor for the ramp-up time with PZD
receive word 3.
2. Set p1139 = 2050[2].
This means that you have interconnected the scaling factor for the ramp-down time with PZD
receive word 3.
The converter receives the value for scaling the ramp-up and ramp-down times via PZD receive
word 3.
❒
Further information is provided on the Internet:
Function Manual (https://support.industry.siemens.com/cs/gb/en/view/
60467055/29243398027)
Application example
In the following application example, the higher-level control sets the ramp-up and ramp-down
times of the converter via PROFIBUS.
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5DPSXSWLPH
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5DPSGRZQWLPH
VFDOLQJ
5HFHLYHGGDWD
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W
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U>@
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3='
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Figure 8-47 Application example for changing the ramp-function generator times in operation
Advanced commissioning
8.17 Setpoint calculation
Distributed converter for SIMOGEAR geared motors
278 Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL
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