Curtis PMC 1297 Manual
A-3
APPENDIX A: GLOSSARY
Current ratio
The 1297 controller’s traction motor current limit increases linearly with
increased throttle. The current ratio parameter allows adjustment of the amount
of current available at low throttle requests in order to maximize startup torque
while maintaining smooth vehicle starts—
see Section 3
A
, page 25.
Deceleration rate
The deceleration rate is the time required for the controller to decrease PWM
output from the maximum allowed to zero, in response to reduced throttle.
There are four major programmable deceleration rates for the 1297 controller: the
Mode 1 and Mode 2 deceleration rates
(see Section 3
A
, page 26)
, which set how
quickly the traction motor decelerates; the pump deceleration rate
(see Section
3
B
, page 47)
, which sets how quickly the pump motor decelerates during Lift
operation; and the lowering valve current deceleration rate
(see Section 3
B
, page
50)
, which sets how quickly the lowering valve aperture closes during Lower
operation.
See
Coast and pick
and
Throttle deceleration
for two additional decelera-
tion rates for the traction motor.
Emergency reverse
Emergency reverse is activated when the emergency reverse switch is pressed.
After the emergency reverse switch is released, normal controller operation is not
resumed until the requirements set by the emergency reverse direction interlock
parameter are satisfied—
see Section 3
A
, page 43.
Environmental protection
The 1297 controller is housed in a rugged ABS plastic case providing environ-
mental protection that meets the requirements of IP53. The controller should
be kept clean and dry to ensure long life. Additional protection is recommended
if the controller is mounted in a location exposed to dirt or water splash.
ET-series electronic throttle
The ET-XXX is a wigwag-style throttle control assembly providing a 0–5V
signal in both directions (Forward/Reverse or Lift/Lower). Use of this throttle
control assembly requires that the controller’s throttle input be configured for
a Type 2 (single-ended 0–5V) throttle.
Fault codes
The 1297 controller provides coded fault information. When a fault occurs, the
fault code can be read directly from the Status LED built into the top of the
controller’s case, or from the Spyglass data display. The fault codes are defined
in Table 6—
see Section 7, page 87.
