Lingenfelter Stewart EMP High Volume Intercooler Pump E2512A & WP29 - Manual (Page 10)

Specifications
9970002204 , REV E, 4/16/2012 © 2011 EMP
10
Electrical Specifications
Vehicle Battery Parameters
12V Pump
Parameter Min Nom Max Units
Vin – Operating 9.0 13.5 16 V
Operating current - - 25
(1)(2)
A
Ignition off current - - 300 µA
Motor off current - 80 - mA
Inrush current - - 205
(3)
A
Inrush current duration - - 270 µS
24V Pump
Parameter Min Nom Max Units
Vin – Operating 18 27.0 32 V
Operating current - - 15
(1)(2)
A
Ignition off current - - 300 µA
Motor off current - 60 - mA
Inrush current - - 370
(3)
A
Inrush current duration - - 250 µS
(1): Peak current is based on the software current limit. 25 amps is the standard current limit for a 12V pump and 15 amps is the standard
current limit for a 24V pump for serial numbers > 07065826.
(2): The pump shuts down when the internal controller temperatures reaches 130˚C at this point the pump will stop running until the internal
controller temperature drops below 125c. Once the safe value is reached, the pump will restart. No ignition cycle is required to restart the pump.
(3): The inrush current occurs when the controller first receives the required voltage on the ignition pin. This current inrush is due to the
charging of the bulk capacitors in the controller. The inrush current numbers are worst case. They were measured with a battery as the source
with a harness that was 3ft in length (very low source impedance). Anything done in the application to increase the source impedance will have
a significant (downward) impact on these numbers. This current is not generated every time the motor is started, but only when the ignition line
is first applied.
LPE Rev A, 2-May-2013
E2512A pumps are programmed for a 9 amp current limit.