Menu 6
Parameter
structure
Keypad and
display
Parameter
x.00
Parameter
description format
Advanced parameter
descriptions
Macros
Serial comms
protocol
Electronic
nameplate
Performance RFC mode
144 Unidrive SP Advanced User Guide
www.controltechniques.com Issue Number: 10
Digital inputs connected to limit switches should be routed to these parameters if fast stopping is required at a limit. In Open-loop mode the drive will
respond in 4.5ms (500μs digital input filter delay + 4ms software delay) and stop the motor using the currently selected ramp rate. In Closed-loop
vector and Servo modes the drive will respond in 750μs (500μs digital input filter delay + 250μs software delay) and stop the motor with zero ramp
rate (i.e. in current limit). The limit switches are direction dependant so that the motor can rotate in a direction that allows the system to move away
from the limit switch. (In open-loop frequency slaving mode both limit switches are active).
Open-loop
Pre-ramp reference > 0Hz Forward limit switch active
Pre-ramp reference < 0Hz Reverse limit switch active
Pre-ramp reference = 0Hz Both limit switches active
Closed-loop and Servo
Pre-ramp reference+hard speed reference > 0rpm Forward limit switch active
Pre-ramp reference+hard speed reference < 0rpm Reverse limit switch active
Pre-ramp reference+hard speed reference = 0rpm Both limit switches active
6.36 Reverse limit switch
Drive modes Open-loop, Closed-loop vector, Servo
Coding
BitSP FI DETEVMDPNDRANCNVPTUSRWBUPS
111
Default Open-loop, Closed-loop vector, Servo 0
Update rate 250μs read
6.37 Sequencing bit: Jog reverse
Drive modes Open-loop, Closed-loop vector, Servo
Coding
BitSP FI DETEVMDPNDRANCNVPTUSRWBUPS
111
Default Open-loop, Closed-loop vector, Servo 0
Update rate 4ms read
6.39 Sequencing bit: Not stop
Drive modes Open-loop, Closed-loop vector, Servo
Coding
BitSP FI DETEVMDPNDRANCNVPTUSRWBUPS
111
Default Open-loop, Closed-loop vector, Servo 0
Update rate 4ms read
6.40 Enable sequencer latching
Drive modes Open-loop, Closed-loop vector, Servo
Coding
BitSP FI DETEVMDPNDRANCNVPTUSRWBUPS
111
Default Open-loop, Closed-loop vector, Servo 0
Update rate 4ms read
To Next Page
Loading...
Need help?
General
