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Curtis 1212S Manual, R ev. B
1 — OVERVIEW
✓ Anti-Rollback/Roll-forward function provides smooth and safe vehicle
control on hills and ramps
✓ Internal main relay provides secure power-off
✓ Boost current gives a brief boost of current greatly improving
transient loads such as starting on a hill, crossing thresholds, etc.
Easy Installation and Setup
✓ Industry standard footprint, mounting centers, and wiring allows
drop-in replacement of other controllers
✓ 1212S controller is easily programmed with a Curtis
programming device, or can be supplied pre-programmed
✓ Accepts standard single-ended voltage/resistance throttles
✓ Throttle sense can be inverted for all throttle types
✓ Simplified troubleshooting and diagnostics
✓ Standard Molex Mini-Fit-Jr. terminals provide proven connections
for the control wiring
✓ Bolt-on terminals provide robust connections for the high current
wiring
Valuable Additional Features
✓ Automatic compensation for changes in motor condition to ensure
optimum drive performance at all times
✓ Multi-mode provides for two distinct and programmable control
modes (indoor/outdoor)
✓ Emergency reverse with belly button switch input
✓ Emergency stop provides immediate EM braking when throttle
transitioned through neutral to >80% reverse request
✓ Lift Lockout input from Curtis 906 battery discharge indicator meter
✓ Output Lift Lockout signal, which can drive a pump contactor
✓ Pump SRO can be enabled to prevent pump startup when KSI
first turned on
✓ Sleep function prevents the controller draining the battery
when the vehicle is inactive
✓ Battery Discharge Indicator output
✓ Adjustable brake hold voltage reduces heating of the brake coil
✓ Reverse polarity protection
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