Introduction Parameter x.00
Parameter
description format
Keypad and
display
CT Modbus
RTU
User
programming
CT Soft Menu 0
Advanced parameter
descriptions
Menu 2
Commander SK Advanced User Guide 39
Issue Number: 2 www.controltechniques.com
These bits are provided for control by logic input terminals for external ramp selection (see Pr 2.10 on page 36 & Pr 2.20 on page 37).
This parameter can select 3 different ramp rates, as follows:
0: s/1000Hz
1: s/100Hz(default)
2: s/10Hz
Therefore, for 0 to 50Hz:
0: Maximum ramp time of 160 seconds, resolution 0.005s
1: Maximum ramp time of 1600 seconds, resolution 0.05s
2: Maximum ramp time of 16000 seconds (>4 hours), resolution 0.5s
Example:
If Pr 2.11 Acceleration rate 1 is set to 10, the following acceleration time would apply according to the value of Pr 2.39:
2.31 Deceleration selected indicator
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111 1
Range 1 to 8
Update rate 5ms
2.32 Acceleration select bit 0
2.33 Acceleration select bit 1
2.34 Acceleration select bit 2
2.35 Deceleration select bit 0
2.36 Deceleration select bit 1
2.37 Deceleration select bit 2
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Default 0
Update rate 5ms
2.38 Unused parameter
2.39 Ramp rate units
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
11
Range 0 to 2
Default 1
Update rate Background
Pr 2.39 0 to 100Hz 0 to 50Hz
01s 0.5s
1 10s 5s
2 100s 50s
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