Curtis 1244 User Manual page 83

APPENDIX A: GLOSSARY
APPENDIX A
GLOSSARY OF FEATURES AND FUNCTIONS
Acceleration rate
The acceleration rate is the time required for the controller to increase from 0
to 100% drive output. The acceleration rate is a MultiMode™ parameter and
is programmable from 0.1 to 5.0 seconds—see Section 3, page 26.
The accel rate parameter together with the Current Ratio, Quick Start,
and Throttle Map parameters allows the OEM to tune the vehicle's performance
in response to increased throttle—see Section 6, page 62.
Access rights
Each programmable parameter is assigned an access level—OEM or User—that
defines who is allowed to change that parameter. These levels are assigned by the
OEM when the controller is originally specified. Restricting parameter access to
the OEM reduces the likelihood of important performance characteristics being
changed by someone unfamiliar with the vehicle's operation. In some cases, it
may be necessary to restrict a parameter's access to ensure that it is not set to
a value in violation of EEC or other safety regulations. The 1313-1109 User
programmer, for example, can adjust only those parameters with User access.
The 1313-4409 OEM programmer can adjust all the parameters with User or
OEM access rights. Typically, OEMs supply 1313-1109 programmers to their
dealers and distributors so that the User-access parameters (for example, the
acceleration rate and maximum speed) can be set to each customer's liking,
and so that the programmer's testing and diagnostics capabilities can be used.
Anti-tiedown
The anti-tiedown feature is designed to discourage operators from taping or
otherwise "tying down" the mode select switches in order to operate permanently
in Mode 2 or Mode 4. At startup, when the interlock switch is first closed, the
anti-tiedown feature checks which operational mode is selected. If the mode
switches are requesting Mode 2 or Mode 4 (Mode Select 1 switch closed),
the controller will ignore the request and default to Mode 1 or Mode 3. The
controller will remain in Mode 1 or Mode 3 until the Mode Select 1 switch is
released and reactivated.
Auxiliary driver
The auxiliary driver is a low side driver capable of pulling a 2 ampere load to B-.
This output is overcurrent protected. It is designed to drive a contactor coil,
but can be used to drive any load requiring less than 2 amperes.
A-1
Curtis 1244 Manual,
Rev. E