Key Features
* CURTIS Model: 1253-4804
* Norminal Battery Voltage (Volts): 48V
* Amature Current Limit (amps): 600
* Programmable Undervoltage Cutback (Volts): 32-42
* Overvoltage Cutoff (Volts): 60
* PWM operating frequency: 15.6 kHz
* Electrical isolation to heatsink (min.): 500 VAC
* KSI input voltage: 28–60V DC
* KSI input current (no contactors engaged): * 60 mA without programmer
* 130 mA with programmer
* Logic input current: < 1 mA
* Status LED output current (max.): < 2 mA
* Heatsink overtemperature cutback: linear cutback starts at 80°C; complete cutoff at 120°C
* Heatsink undertemperature cutback: 50% current below -25°C
* Operating ambient temperature range: -40°C to 50°C
* Storage ambient temperature range: -40°C to 85°C
* Package environmental rating: IP54
* Throttle Type: 0-5KΩ (default setting), 5K-0Ω, 0-5V or single-ended 3-wire potentiometer (1kΩ to 10kΩ range)
* Dimensions: L196xW146xH77 mm
* Net Weight: 2.6 kg
Features include:
* Smooth and Quiet Control * Programmable acceleration rates provide smooth application of pump motor torque.
* 15.6 kHz PWM frequency for near-silent operation.
* Programmable Flexibility
* Easily programmable through a CURTIS programming device.Four Speed Select inputs (SS1.SS4) with individually programmable top
speeds.Programmable throttle input for precise speed control with a variety of signal sources.Programmable turn-off delay
allows SS4 to be used for power steering.Adjustable minimum speed setting to ensure pump lubrication and to maintain steering
system pressure.
* Robust Safety and Reliability
* Interlock feature disables the controller when operator is not present.Programmable startup lockout prevents inadvertent
operation.Seamless integration with CURTIS gauges (models 803, 841, 906, and enGage. IV) for lift lockout function.Lift lockout
disables the controller at low battery state of charge.Redundant watchdog timer circuits ensure proper software operation.
External Status LED output for easy troubleshooting.Short-circuit protection on main contactor driver.Precharge control
prevents pitting of contactor tips at startup.Thermal cutback provides protection to the controller.Rugged housing meets IP54
environmental ratings.