Motor: 0-Acim: Los Menu - Curtis 1232E Manual

PARAMETER
LOS Upon Encoder Fault
LOS_Upon_Encoder_Fault
LOS_Upon_Encoder_Fault_
Bit0 [Bit 0]
0x308F 0x00
LOS Max Speed
Enc_LOS_Max_Speed
0x3083 0x00
LOS Max Current
Enc_LOS_Max_Current
0x3085 0x00
LOS Max Mod Depth
Enc_LOS_Max_Mod_Depth
0x3084 0x00
LOS Accel Rate
Enc_LOS_Accel_Rate
0x3086 0x00
LOS Decel Rate
Enc_LOS_Decel_Rate
0x3087 0x00
Curtis 1232E/34E/36E/38E & 1232SE/34SE/36SE Manual,
2 4 N O V E M B E R 2 0 1 5

MOTOR: 0-ACIM: LOS MENU

ALLOWABLE
RANGE
On / Off Limited Operating Strategy (LOS) is typically used to drive the vehicle back
to a repair center at very low speeds in the event the motor encoder fails.
On / Off
Following an encoder failure ((either Encoder Fault (fault code 36) or
Stall Detected (fault code 73)), and after the Interlock is cycled, the vehicle
enters LOS mode thus allowing drive without motor encoder feedback.
In LOS mode, the ability to achieve maximum torque—even for a very
short time—is considered more important than smoothness.
When LOS mode is entered, the Encoder LOS fault (fault code 93)
becomes active and the encoder fault ((either Encoder Fault (fault code
36) or Stall Detected (fault code 73)) is cleared.
When this parameter is programmed On, LOS mode will be entered in
the event of an encoder fault followed by an Interlock cycle.
When programmed Off, in the event of an encoder fault the encoder
fault remains and drive is disabled.
100 – 2000 rpm This parameter indirectly defines the maximum speed for LOS mode by
100 – 2000 setting the maximum frequency that corresponds to LOS Max Speed.
In LOS mode the throttle commands a frequency that is interpolated linear-
ly between zero (at Throttle Command = 0%) and the programmed LOS
Max Speed (at Throttle Command = 100%).
100 – 650 A In LOS mode, a partial or full throttle command will result in the maximum
1000 – 6500 current set by this parameter. This current setting is clamped by the
controller's rated current.
15 – 100 % In LOS mode, the maximum modulation depth acts to limit the current
177 – 1182 at higher speeds. This parameter should be set such that the modulation
depth limit is reached prior to the LOS Max Speed limit, so that the motor
current will fall off from LOS Max Current at higher speeds. This may allow
the vehicle to drive longer in LOS mode, as it lessens the chance of the
motor or controller overheating.
2.0 – 15.0 s Defines the rate (in seconds) at which the frequency increases when full
2000 – 15000 throttle is applied, while operating in LOS mode. This parameter should be
set to a slow rate (high parameter value) so the frequency command has a
very slow slew rate to ensure that the max torque point is hit for a reason-
able period of time; this decreases the probability of going over the slip
curve, and allows ramps or obstacles to be overcome.
2.0 – 15.0 s Defines the rate (in seconds) at which the frequency decreases when
2000 – 15000 throttle is released, while operating in LOS mode.
3 — PROGRAMMABLE PARAMETERS:
DESCRIPTION
30
os
Motor Parameters
59