Power/Ignition Enable Specification
© 2019 EMP, Inc.
7
Power Specification
The battery connection provides constant power to the component controller module. All power necessary to
operate the component comes from this pin.
12V Component Vehicle Battery Parameters
Parameter
Min
Nom
Max
Units
V
in
– Operating
9.0
13.5
16
V
Operating current (oil pump)
-
-
25
(1)(2)
A
Operating current (water pump)
-
-
27.5
(1)(2)
A
Operating current (fan)
-
-
27.5
(1)(2)
A
Ignition off current
-
-
300
µA
Motor off current
-
30
-
mA
Inrush current
-
-
5
A
Inrush current duration
-
-
1.5
S
24V Component Vehicle Battery Parameters
Parameter
Min
Nom
Max
Units
V
in
– Operating
18
27.0
32
V
Operating current (oil pump)
-
-
25
(1)(2)
A
Operating current (water pump)
-
-
22
(1)(2)
A
Operating current (fan)
-
-
27.5
(1)(2)
A
Ignition off current
-
-
300
µA
Motor off current
-
30
-
mA
Inrush current
-
-
5
A
Inrush current duration
-
-
1.5
S
(1)
Operating current is the steady state design point of the controller for the application. Peak current is based
on the current limit.
(2)
To protect the controller, the motor speed begins to derate when the internal controller temperature
reaches a calibrated threshold. Derated motor operation will continue until the internal controller
temperature drops below a safe value. No ignition cycle is required to restore normal operation of the
motor.
Ignition Enable Specification
The ignition enable pin is used in power management of the controller. When this input goes high, the module
will “wake up.” This input is designed for a switched power source and will not be damaged by vehicle transients.
Ignition enable must be separate from component power so that power remains on when ignition is switched off
to enable controller shutdown processes.
Component Vehicle Ignition Parameters
Parameter
Min
Nom
Max
Units
V
in
8
13.5 or 27
32
V
Ignition current (13.5V)
3
mA
Ignition current (27.5V)
5
mA
V
in
– Low (sleep)
-50
0
3.6
V
