[scottyb]

Here is what I found.......
Model: DCX300 / DCX400 / DCX500 / DCX600

Type: Separately Excited (Shunt) DC motor controller
Battery Input Voltage: 24 – 48VDC Nominal, (60VDC max)
Under voltage cutback: adjustable, 16-30 VDC
Over voltage shutdown: adjustable, 30-60 VDC (60VDC MAX)
Field Current Limit: 30A (Programmed for Motor Field Excitation Curve)
Operating Frequency: 18kHz
Contactor (Solenoid) drive current: 2A max
Control voltage range 12 – 60 VDC @ 15mA max:

• <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Key Switch Input
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Throttle Inputs
  
• Reverse Mode Inputs
  

Reverse Horn Output: 50mA sinking max (Active Low = Horn ON)
Standby Current (Power Up): < 35mA
Throttle Input:

• <LI style="COLOR: #000000; LINE-HEIGHT: 0px">ITS (inductive)
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Resistive 0-5K ohm (+/-10%) (2-wire and 3-Wire)
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Resistive 5K-0 ohm (+/-10%)
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">0-5Volt
  
• 6-10Volt
  

Operating Temperature: -25C to 75C, 95C shutdown
Programmable Field Excitation Map (Factory shipped)
Adjustments via Controller Pro software:

• <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Throttle acceleration / deceleration ramp rate
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Throttle map (curve) profile: Linear, Progressive, S-Curve
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">MAX (Armature) current limit (0-100%)
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Brake current limit (0-100%)
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Under / Over voltage shutdown
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Top Speed & Turbo button
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Half Speed Reverse
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">High Pedal Disable
  <LI style="COLOR: #000000; LINE-HEIGHT: 0px">Plug Brake
  
• TURBO (used only at FULL Throttle)