Curtis 1226 User Manual

3 — PROGRAMMABLE PARAMETERS
Curtis Model 1226 – September 2019
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pg. 32
Understanding Low and High Speed Brake Deceleration Rates
You can optimize the rates at which a vehicle decelerates when full throttle is applied in the opposite
direction. ese deceleration rates are congured with the Full Brake Rate HS and Full Brake Rate
LS parameters. You can congure dierent deceleration rates for each speed mode.
e deceleration rates are relative to the values of the HS(High Speed) and LS(Low Speed) parameters.
See Fine Tuning Menu on page 30.
When full throttle is applied in the opposite direction while the vehicle is traveling between the
specied low and high speeds, the deceleration rate is linearly scaled between the low and high speed
deceleration rates.
Note: ese deceleration rates apply to forward and reverse.
Example
Suppose you set the following parameters to the following values:
PARAMETER VALUES
LS(Low Speed) 30%
HS(High Speed) 70%
Full Brake Rate LS 3.0s
Full Brake Rate HS 1.5s
Figure 11 shows the deceleration rates when full throttle is applied in the opposite direction.
BRAKE RATE
(seconds)
M OTOR Voltage
LOW SPEED
(LS
*
Speed Scaler)
= 30%
*
27V = 8.1V
FASTER
Full Brake Rate HS = 1.5
Full Brake Rate LS = 3.0
Low Brake Rate = 8.0s
HIGH SPEED
(HS
*
Speed Scaler)
= 70%
*
27V = 18.9V
Speed Scaler
FASTER
100% Brake
1% Brake
INCREASING BRAKE
Figure 11
Low Speed and High Speed Brake Deceleration Rates
Note: is section discusses brake deceleration at low and high speeds. However, the same concepts
apply to any deceleration-related parameter with a name ending in HS or LS.

Curtis 1226 Specifications

General

Brand	Curtis
Model	1226
Category	Controller
Language	English