Return to TOC Curtis 1239E-1269E Manual, os 37.0 RevA – May 2021
4 — PROGRAMMABLE PARAMETERS
pg. 71
BATTERY: BATTERY CURRENT LIMITING
PARAMETER ALLOWABLE RANGE DESCRIPTION
Battery Current Limiter Enable
Battery_Current_Limiter_Enable
0x31E1 0x00
0 – 1
0 – 1
Setting this parameter to 1 enables drive and regen battery current
limits. This is particularly useful when interfacing to Lithium Batteries
with dened current limits.
Drive Battery Current Limit
Drive_Battery_Current_Limit
0x31E2 0x00
0 – 1000 A
0 – 10000
Sets a limit on the DC current that the controller may draw out of
the battery.
Regen Battery Current Limit
Regen_Battery_Current_Limit
0x31E3 0x00
0 – 1000 A
0 – 10000
Sets a limit on the DC current that the controller may put into the
battery from regenerative braking.
Kp
Battery_Current_Kp
0x31E4 0x00
0 – 100.0 %
0 – 1000
Determines how aggressively the battery current limiter attempts to
match the Drive Battery Current Limit or the Regen Battery Current
Limit. This parameter is active when the motor is spinning at low motor
speeds. Larger values provide tighter control but may cause oscillation.
Kp HS
Battery_Current_Kp_HS
0x31E5 0x00
0 – 100.0 %
0 – 1000
Sets the proportional gain (Kp) for high motor speeds; see description
of Kp.
Ki
Battery_Current_Ki
0x31E6 0x00
0 – 100.0 %
0 – 1000
The integral gain (Ki) forces zero steady state error, so the battery
current regulator will limit to exactly the current limit set by the
Drive Battery Current Limit or Regen Battery Current Limit. This
parameter is active when the motor is spinning at low speeds.
Larger values provide tighter control but may cause oscillation.
Ki HS
Battery_Current_Ki_HS
0x31E7 0x00
0 – 100.0 %
0 – 1000
Sets the integral gain (Ki) for high motor speeds; see description of Ki.
Kd
Battery_Current_Kd
0x31E8 0x00
0 – 100.0 %
0 – 1000
The derivative gain (Kd) provides damping as the battery current
approaches the programmed limit, thereby reducing overshoot. This
parameter is active when the motor is spinning at lower speeds. If Kd is
set too high, the current may cut back before the limit and may take too
long to reach the limit. If Kd is set too low, the current may overshoot
the limit.
Kd HS
Battery_Current_Kd_Hs
0x31E9 0x00
0 – 400.0 %
0 – 4000
Sets the derivative gain (Kd) for high motor speeds; see description
of Kd.
Limit Ramp Rate
Battery_Current_Limit_Ramp_Rate
0x31EA 0x00
0 – 30.0 Seconds
0 – 30000
This parameter limits how fast the actual Battery Current Limit can
change when the Drive or Regen battery current limit parameters are
changed during controller operation. A setting of 30.0 seconds means
that the limit will take 30.0 seconds to ramp from the full current limit
of the controller to zero or vice versa. A setting of zero means that the
ramp rate will not be limited.