Sold out

ESD5500E GAC Alternative Speed Controller

R1,610.00 Incl. Vat

The ESD5500E GAC Speed Controller Unit is an all-electronic device designed to control engine speed quickly and precisely in response to transient load changes.

Out of stock

SKU: ESD5500E Category:


The ESD5500E GAC Speed Controller Unit is an all-electronic device designed to control engine speed quickly and precisely in response to transient load changes.

The ESD5500E controls a wide variety of engines in isochronous or droop mode when connected to a proportional electric actuator and magnetic speed sensor. The ruggedly built ESD5500E series is designed to withstand the engine environment. Light-Force variations are available.

Specifications of the ESD5500E GAC Speed Controller

  • Isochronous Operation ± 0.25 % or better
  • Speed Range / Governor 1 – 7.5 kHz Continuous
  • Speed Drift with Temperature ±1 % MAX
  • Idle Adjust Clockwise 60 % of Set Speed
  • Idle Adjust Counterclockwise Less than 1200 Hz
  • Droop Range 1 – 5 % regulation
  • Droop Adjust Maximum (K-L jumpered) 400 Hz ±75 Hz per 1.0 A change
    Droop Adjust Minimum (K-L jumpered) 15 Hz ±75 Hz per 1.0 A change
  • Speed Trim Range ± 200 Hz
  • Remote Variable Speed Range 500 – 7.5 kHz
  • DC Supply 12 V DC and 24 V DC Battery Systems Transient and Reverse Voltage Protected*
  • Polarity Negative Ground (Case Isolated)
  • Power Consumption 50 mA continuous plus actuator current
  • Speed Signal Range 1.0 – 50 V AC
    Speed Sensor Signal 1.0 – 120 V RMS
  • Actuator Current Range**
    (77°F (25°C))
    Minimum 1.0 A
    Nominal 7.0 A
    Peak 10.0 A
  • Vibration 1 g @ 20-100 Hz
  • Testing 100 % Functionally Tested
  • Ambient Temperature -40° to 85 °C [-40° to 180 °F]
  • Relative Humidity up to 95 %
  • All Surface Finishes Fungus Proof, Corrosion Resistant
  • Weight 1.20 lbf [0.54 kgf]

When wiring ESD5500E Series controllers:

  • Use shielded cable for all external connections to the ESD controller.
  • One end of each shield, including the speed sensor shield, should be grounded to a single point on the ESD case.
  • Terminal A, B, E,and F should be 16 AWG or larger. Long cables require increased wire size to minimize voltage drops.
  • Battery positive (+) Terminal F should be fused for 15 A.
  • Magnetic speed sensors Terminals C and D must be twisted and or shielded for the entire length.
  • The gap between the speed sensor and the ring gear teeth should be smaller than 0.02 in [0.5 mm] usually backing out 3/4 turn after touching ring gear teeth. Speed sensor voltage should be at lease 1 V AC RMS during cranking.
  • If auto synchronization is used alone, not with a load sharing module, use a 3 Ω resistor between Terminal N and P to match the voltage between the speed control unit and the synchronizer.
  • When operating at the upper end of the control unit frequency range, add a jumper wire between Terminal G and J to increase the frequency range of the control unit over 7000 Hz.
  • Terminal P is used to supply +10 V DC regulated supply to accessories. No more than 20 mA of current can be drawn from this supply. Ground reference is Terminal G. A short circuit in this terminal can damage the speed control unit.
  • Do not over-tighten terminals. Torque to no greater than 9.0 in-lb ±2.5 [1.01 ±0.28 N∙m].
Additional information

Additional information


IEP Powerproducts

Shipping & Delivery
Generator Parts Online Shop provides delivery anywhere in South Africa. We are based in 79 De Beer Street, Alrode South, Johannesburg. Pricing is based on your area, and the weight of the product, our standard pricing in Gauteng is R99 and R199 for other regions. Please note that heavier products like the Alternators and G-Drive Engines, Start from R3500+. Self Collection or Own Courier Services are also available at checkout.