Emerson 2401 - Deceleration Selected Indicator; Acceleration Select Bit; Deceleration Select Bit; Ramp Rate Units

Menu 2 Introduction
Parameter
x.00
Parameter
description format
Keypad and
display
Serial
communications
CT Modbus
RTU
PLC Ladder
programming
CTSoft Menu 0
Advanced parameter
descriptions
54 Commander SK Advanced User Guide
www.controltechniques.com Issue Number: 9
These bits are provided for control by logic input terminals for external ramp selection (see Pr 2.10 on page 51 & Pr 2.20 on page 52).
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 OFF(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