A-10
Curtis 1207B Manual
2 9 J U N E 2 0 1 2 D R A F T
APPENDIX A: GLOSSARY
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 input alone (Type “1” in the programming menu); SRO relative to both
KSI and brake input (Type “2”); and SRO relative to KSI, brake, and forward
inputs (Type “3”). The handheld programmer can be used to set the controller
to operate with any of these types of SRO, or with no SRO (SRO Type “0”).
If your controller is programmed so that both KSI and brake input are
required (SRO Type “2”), the following sequence must be followed to enable
the controller:
step 1. KSI on,
step 2. brake released (brake input “high”), 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 input by at least 50 msec. Once the controller
is operational, turning off either KSI or the brake causes the controller to turn
off; re-enabling the controller requires the 3-step sequence.
Similarly, if your controller is programmed so that KSI, brake, and forward
inputs are all required (SRO Type “3”), they must be provided in that sequence
in order to enable the controller. Note, however, that operation is allowed if
a reverse input precedes the brake 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 is applied while
direction is selected, SRO is not activated if the brake is then released 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
temperature sensor is also used to calculate and display the heatsink temperature
on the handheld programmer.
Temperature extreme current-limit cutback
(see Overtemperature,
Undertemperature)
Temperature extreme data storage
The maximum and minimum temperatures read at the heatsink at any time
during powering of the controller are stored in the controller’s memory. These
values (which can be accessed via the programmer’s Monitor menu) are cleared
each time the controller’s diagnostic history file is cleared.
To Next Page
Loading...
