Setting The Ramp-Function Generator - Siemens G120P Manual

3.5.2
Siemens AG
1. Select Options > Parameter settings > Reset drive to factory settings.
2. Confirm with OK.
 BOP-2
1. Select Options > DRVRESET in the menu.
2. Confirm with OK.

Setting the ramp-function generator

You can set the speed limits and the ramp-up and ramp-down times here.
Parameter Possible settings
p1080 Minimum speed in [rpm]
p1082 Maximum speed in [rpm]
p1120 Ramp-up time of the motor after switching on in [s]
p1121 Ramp-down time of the motor after switching off in [s]
The minimum speed and maximum speed of the motor are dependent upon the
speed setpoint and the rated speed of the motor. Refer to the overview below:
% of the synchronous Hz
speed
10 5
20 10
30 15
40 20
50 25
60 30
70 35
80 40
90 45
100 50
110 55
120 60
The ramp-up and ramp-down time define the maximum motor acceleration when
the speed setpoint changes. The ramp-up and ramp-down time is the time between
motor standstill and the maximum speed, or between the maximum speed and
motor standstill.
Factory settings:
Minimum speed [p1080] - factory setting 0 [rpm]

Maximum speed [p1082] - factory setting 1500 [rpm]

Acceleration time [p1120] - factory setting 10 s

Deceleration time [p1121] - factory setting 10 s

Recommended ramp times
0.37 – 3kW
4 – 15 kW
18.5 – 30 kW
37 – 90 kW
Commissioning
Additional settings
Four-pole motor (rpm) Two-pole motor (rpm)
150 300
300 600
450 900
600 1200
750 1500
900 1800
1050 2100
1200 2400
1350 2700
1500 3000
1650 3300
1800 3600
30 s
60s
90s
120s
3
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CM2G5111en
2014-05-16