Control Techniques unidrive sp User Manual

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Menu 4
Unidrive SP Advanced User Guide 99
Issue Number: 7 www.controltechniques.com
The thermal protection system can be used in regen mode to protect the input inductors. The rated current (Pr 5.07) should be set to the rated current
for the inductors. The thermal model temperature accumulator is reset to zero at power-up and accumulates the temperature of the motor whilst the
drive remains powered-up. Each time Pr 11.45 is changed to select a new motor, or the rated current defined by Pr 5.07 or Pr 21.07 (depending on
the motor selected) is altered, the accumulator is reset to zero.
The drive reactive current is shown in this parameter for all modes.
The current limit applied at any time depends on whether the drive is motoring or regenerating and also on the level of the symmetrical current limit.
Pr 4.18 gives the limit level that applies at any instant.
See Pr 4.16 on page 97.
Open-loop, Closed-loop vector, Servo
This parameter displays the actual torque producing current (Pr 4.02) as a percentage of rated active current. Positive values indicate motoring and
negative values indicate regenerating.
Regen
This parameter displays the active current (Pr 4.02) as a percentage of the rated current (Pr 5.07 or Pr 21.07). Positive values indicate power flow
from the supply and negative values indicate power into the supply
If this parameter is set to one, the drive calculates a torque reference from the motor and load inertia (Pr 3.18) and the rate of change of speed
reference. The torque reference is added to the speed controller output to provide inertia compensation. This can be used in speed or torque control
4.17 Reactive current
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
112111
Range
Open-loop, Closed-loop vector, Servo,
Regen
±DRIVE_CURRENT_MAX A
Update rate 4ms write
4.18 Overriding current limit
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111 1 1 1
Range
Open-loop, Closed-loop vector, Servo,
Regen
0 to TORQUE_PROD_CURRENT_MAX %
Update rate Background write
4.19 Overload accumulator
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
11 1 1 1
Range
Open-loop, Closed-loop vector, Servo,
Regen
0 to 100.0 %
Update rate Background write
4.20 Percentage load
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111111
Range
Open-loop, Closed-loop vector, Servo
Regen
±USER_CURRENT_MAX %
Update rate Background write
4.22 Inertia compensation enable
Drive modes Closed-loop vector, Servo
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Default Closed-loop vector, Servo 0
Update rate Background read
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Control Techniques unidrive sp Specifications

General

Brand	Control Techniques
Model	unidrive sp
Category	Controller
Language	English