Serviceable CURTIS 350A 36 48V AC MOTOR CONTROLLER 1234E 5321 for Electric Forklifts |

Serviceable CURTIS 350A 36 48V AC MOTOR CONTROLLER 1234E 5321 for Electric Forklifts |

Product Description
 

1. Reference

2. Product information            
CURTIS 1234 controllers are separately excited motor speed controllers designed for use in a variety of small industrial vehicles and in material handling equipment. These programmable controllers are simple to install, efficient, and cost effective, while offering more features than the original 1234.

The 1234 controller provides smooth precise control of motor speed and torque. A full-bridge field control stage is combined with a half-bridge armature power stage to provide solid state motor reversing and full regenerative braking without additional relays or contactors. The controller's rugged IP53 housing and packaging are built to withstand shock and vibration. State-of-the-art surface mount logic board fabrication makes the 1234 controller even more reliable than the original 1234. The 1234 is fully programmable through the CURTIS Model 1313-4401 Handheld Programmer or 1314 PC Programming Station. In addition to configuration flexibility, the programmer provides diagnostic and test capability.

Appropriate throttles for use with the 1234E-5321 controller include:

• Type 1: 2-wire 5kΩ-0 throttles
• Type 2: 0-5V throttles, current source throttles, three-wire potentiometer throttles, and electronic throttles wired for singleended operation
• Type 3: 2-wire 0-5kΩ throttles
• Type 4: 0-5V and three-wire potentiometer throttles wired for wigwag operation

Key Features:

• CURTIS Model: 1234E-5321
• Norminal Battery Voltage (Volts): 36-48V 
• PWM operating frequency: 16 kHz
• Electrical isolation to heatsink (min.): 500 VAC
• KSI input voltage (minimum): 16.8 V
• KSI input current (typical):
  • 78 mA without programmer
  • 120 mA with programmer
• Logic input voltage: 7.5 V High; <1 V Low
• Logic input current 15 mA
• Overvoltage protection:
  • 24V models: cutback at approx. 30V, cutback at ≈34V
  • 36V models: cutback at approx. 45V, cutback at ≈49V
• Undervoltage protection:
  • 24V models: cutback at approx. 17V, cutback at ≈13V
  • 36V models: cutback at approx. 25V, cutback at ≈21V
• Drive Current Limit (amps): 350Amature:

3. Product Details