Current Demand Filter 2; User Current Maximum Scaling; Low Speed Thermal Protection Mode; Percentage Torque - Control Techniques unidrive sp Advanced User's Manual

Parameter Keypad and
Menu 4
structure display
applications to produce the torque required to accelerate or decelerate the load inertia.
4.23

Current demand filter 2

Drive modes Closed-loop vector, Servo
Bit SP
Coding
Range Closed-loop vector, Servo
Default Closed-loop vector, Servo
Update rate Background read
The current demand filter time constant is defined by this parameter if the speed gain select (Pr 3.16) is one.
4.24

User current maximum scaling

Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
Open-loop, Closed-loop vector, Servo,
Range
Regen
Open-loop,
Default
Closed-loop vector, Servo, Regen
Update rate Background read
The maximum for Pr 4.08 and Pr 4.20 is defined by this parameter
4.25

Low speed thermal protection mode

Drive modes Open-loop, Closed-loop, Servo
Bit SP
Coding
1
Default Open-loop, Closed-loop, Servo
Update rate Background read
See Pr 4.16 on page 97.
4.26

Percentage torque

Drive modes Open-loop
Bit SP
Coding
Default Open-loop
Update rate Background read
Pr 4.26 shows the torque producing current (Pr 4.02) as a percentage of the active torque producing current, but with an additional adjustment above
base speed so that this parameter shows percentage torque. Below base speed Pr 4.26 is equal to Pr 4.20. Above base speed the percentage torque
producing current (shown in Pr 4.20) is adjusted as follows:
Pr 4.26 = Pr 4.20 x rated frequency / frequency
100
Parameter Parameter
x.00 description format
FI DE Txt VM DP ND
1
0.0 to 25.0 ms
0.0
FI DE Txt VM DP ND
1 1
0.0 to TORQUE_PROD_CURRENT_MAX %
165.0
175.0
FI DE Txt VM DP ND
0
FI DE Txt VM DP ND
1 1 1 1
±USER_CURRENT_MAX %
www.controltechniques.com
http://nicontrols.com
Advanced parameter
Macros
descriptions
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
Serial comms Electronic
Performance
protocol nameplate
PS
1
PS
1
PS
PS
Unidrive SP Advanced User Guide
Issue Number: 7
Feature look-
up table