Menu 4 Regen Logic Diagram - Emerson SP1201 Installation Manual

Safety Product
Introduction
Information information
The Maximum current is either (1.75 x Rated drive current) when the rated current set by Pr 5.07 (or Pr 21.07 if motor map 2 is selected) is less
than or equal to the maximum Heavy Duty current rating, otherwise it is (1.1 x Maximum rated current).
The rated active and rated magnetising currents are calculated from regen mode rated current (Pr 5.07) as:
rated active current = regen mode rated current
rated magnetising current = 0
In this mode the drive only requires the regen mode rated current to set the maximum current limit correctly and scale the current limits, and so no
auto-tuning is required to set these accurately.
It is possible to set a level of reactive current with Pr 4.08 in regen mode. This parameter has a limit defined as REGEN_REACTIVE_MAX that is
provided to limit the total current to DRIVE_CURRENT_MAX.
REGEN_REACTIVE_MAX
Figure 9-3 Menu 4 Regen logic diagram
Reactive
current
reference
4.08
Real current
demand
from Menu 3
Current
magnitude
4.01 2.01
Reactive
current
2.01 4.17
Current
Active
measurement
current
2.01 4.02
Percentage
load
4.20 2.01
Key
Input
X
X
0.XX
terminals
X
Output 0.XX
X
terminals
The parameters are all shown at their default settings
Unidrive SP Regen Installation Guide
Issue Number: 2
System Mechanical
design installation installation
×
Rated drive current 1.75
------------------------------------------------------------------------ -
=
Regen unit rated current
Current
demand
2.01 4.04
Overload detection
Thermal
4.15
time
constant
Thermal
4.16 protection
mode
Read-write (RW)
parameter
Read-only (RO)
parameter
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Electrical Getting
Optimisation
started
2
2
×
– Pr 4.07 100%
+
_
Overriding
current
limit
4.18 2.01
Current limits
Symmetrical
4.07
current
limit
Overload
4.19 2.01
accumulator
Technical Component
Parameters
data sizing
Current
controller
4.13
kp gain
Current
+
4.14 controller
ki gain
_
Current
controller
4.13
kp gain
Current
4.14
controller
ki gain
Diagnostics
Modulator
and power
circuit
101