Parameter 02.039 Ramp Rate Units
Short description Defines the units used by the ramp system
Mode Open‑Loop
Minimum 0 Maximum 1
Default 1 Units
Type 1 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 0
Coding RW
The ramp rate parameters (Acceleration Rate 1 (02.011) to Acceleration Rate 8 (02.018), Jog Acceleration Rate (02.019), Deceleration Rate 1
(02.021) to Deceleration Rate 8 (02.028) and Jog Deceleration Rate (02.029)) are specified in s / Ramp rate frequency for Open-loop mode and s /
Ramp rate speed for RFC-A and RFC-S modes. Ramp rate frequency and Ramp rate speed are selected with Ramp Rate Units (02.039) as defined in
the table below.
Ramp Rate Units (02.039) Open-loop Ramp rate frequency RFC-A and RFC-S mode Ramp rate speed
0 100Hz 1000rpm ot 1000mm/s
1 Maximum frequency Maximum speed
Maximum frequency and Maximum speed are defined by Maximum Reference Clamp (01.006) if Select Motor 2 Parameters (11.045) = 0,
or M2 Maximum Reference Clamp (21.001) if Select Motor 2 Parameters (11.045) = 1.
Parameter 02.040 S Ramp Percentage
Short description Defines the profile of the S ramp system as a percentage
Mode Open‑Loop
Minimum 0.0 Maximum 50.0
Default 0.0 Units %
Type 16 Bit User Save Update Rate Background read
Display Format Standard Decimal Places 1
Coding RW
If S Ramp Set-up Mode (02.041) = 1 the percentage of the ramp to Maximum frequency or Maximum speed that includes half the S ramp profile can be
specified with S Ramp Percentage (02.040) as shown in the diagram below. If motor map one is active (i.e. Select Motor 2 Parameters (11.045) = 0),
the acceleration or deceleration times are defined by Acceleration Rate 1 (02.011) and Deceleration Rate 1 (02.021) respectively irrespective of which
ramps rates are selected. The maximum maximum frequency/speed is defined by Maximum Reference Clamp (01.006). The time for the
frequency/speed change remains constant at the time defined by the acceleration of deceleration rate, and so as the percentage S ramp is changed the
maximum acceleration is modified automatically. If motor map 2 is selected then M2 Maximum Reference Clamp (21.001), M2 Acceleration Rate 1
(21.004) and M2 Deceleration Rate 1 (21.005) are used to define the ramp profile.