Curtis 1214-/15-/19-8 Manual
APPENDIX A: FEATURES & FUNCTIONS
A-11
Static-return-to-off (SRO)
The SRO feature prevents the vehicle from being started when “in gear.” SRO
checks the sequencing of brake/seat switch input—or of KSI and brake input—
relative to a direction input. The brake/seat switch input must come on before a
direction is selected. If a direction is selected before or simultaneously (within 50
msec) with the brake input, the controller is disabled. There are three types of
SRO: SRO relative to brake/seat switch input alone (Type “1” in the program-
ming menu); SRO relative to brake/seat switch input plus KSI (Type “2”); and
SRO relative to brake/seat switch input plus KSI plus forward only (Type “3”).
The handheld programmer can be used to set the controller to operate with one
of these types of SRO, or with no SRO (SRO Type “0”).
If your controller is wired so that both KSI and brake/seat switch input are
required (SRO Type “2”), the following sequence must be followed to enable the
controller: STEP 1, KSI on; STEP 2, brake/seat switch closed; and STEP 3, direction
selected. The interval between steps 1 and 2 is the same as between steps 2 and 3;
that is, KSI input must precede brake/seat switch input by at least 50 msec. Once
the controller is operational, turning off either KSI or the brake/seat switch input
causes the controller to turn off; re-enabling the controller requires the 3-step
sequence.
Similarly, if your controller is wired so that KSI, brake/seat switch, and
forward inputs are all required (SRO Type “3”), they must be provided in that
sequence in order to enable the controller. However, operation is allowed if a
reverse input precedes the brake/seat switch input; this can be useful when
operating a walkie on ramps.
Sequencing delay, which can be set with the handheld programmer, provides
a variable delay before disabling the controller. If the brake/seat switch is opened
while direction is selected, SRO is not activated if the brake/seat switch is then
closed before the delay time elapses.
Temperature compensation for current limits
Full temperature compensation provides constant current limits throughout the
normal operating range (heatsink temperatures of -25°C to +85°C). The tem-
perature sensor is also used to calculate and display the heatsink temperature on
the handheld programmer.
Temperature extreme current-limit cutback (see Overtemperature,
Undertemperature)
To Next Page
Loading...
Need help?
General
