ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS
Page 32
August 2001
Example:
Setting of 0 = no speed limit
Setting of 170 = maximum speed
reduction
Setting of 110 =100%-((110-51) - (creep val/8)) x 0.78
=44%
FUNCTION 12
REVERSE SPEED LIMIT
( Push 12 )
This function allows for the adjustment of the top speed of
the vehicle (maximum battery volts to the motor) when it is
being operated in the reverse direction.
Range
100% to 0% of battery volts
Set
51 to 170
Resolution
0.78% per set unit
Example:
Setting of 0 = no speed limit
Setting of 170 = maximum speed
reduction
Setting of 134 =100%-((134-51) - (creep val/8)) x 0.78
=
20%
FUNCTION 13
PERCENT CHARGE SWITCH PLUG TO
REGEN
( Push 13 )
This function selects the percentage of battery state of
charge at which the control switches from regenerative to
plug braking on overspeed.
When the BDI reading is less than the setting value the
control will regenerative brake, when the BDI is greater
than the setting value the control will plug brake.
Example: A setting of 95 will plug between 100 and 96
percent state of change and regen when the battery state
of charge is 95 percent and below.
FUNCTION 14
INTERNAL RESISTANCE
COMPENSATION
( Push 14 )
This function is used when the Battery Discharge Indicator
is present. Adjustment of this function will improve the
accuracy of the BDI. In order to determine this setting, the
voltage drop of the battery under load must first be
calculated by the following method:
1. Record open circuit voltage (Vo) by measuring the
voltage at the control positive and negative power
terminals.
2. Load the traction motor to 100 amps in 1A and record the
voltage (V
L
) at the control positive and negative power
terminals.
3. Calculate voltage drop (V
Drop
) as follows:
V
Drop
= V
O
- V
L
4. Use the table below to determine the appropriate setting
using the calculated V
Drop
as a reference.
INTERNAL RESISTANCE COMPENSATION
TABLE
Setting V
Drop
Setting
V
Drop
2 11.44
17 1.34
3 7.60
18 1.27
4 5.72
19 1.20
5 4.57
20 1.14
6 3.81
21 1.09
7 3.27
22 1.04
8 2.86
23 0.99
9 2.54
24 0.95
10 2.28
25 0.91
11 2.08
26 0.88
12 1.90
27 0.85
13 1.76
28 0.82
14 1.63
29 0.79
15 1.52
30 0.76
16 1.43
31 0.74
FUNCTION 15
BATTERY VOLTS
(Push
l5)
In order for the battery discharge indication feature of this
control to operate properly, this function must be set to a
value between 70 and 80.
The following functions have function numbers larger
than the numbers on the Handset keyboard. To access
these functions, push the CONT key and the number
shown in the instructions at the same time. THE TURF
SPEED SWITCH MUST BE OPEN.
FUNCTION 16
OVERSPEED PLUG CURRENT LIMIT
( Push CONT1)
This function allows for the adjustment of the maximum
current allowed for plug braking during an overspeed
condition.
Range
26 to 225 amps
Set
0 to 255
Resolution
0.8125 amps per unit
Example
Setting of 20 = 26 + (20 X .8125) =
42
Amps
