Elec
trical
6 - 8
Electrical
EP800AD (Acrobat™ HPU)
24V Power Supply
The power supply is open frame so use caution when the electrical box is open and the unit is
powered on.
Exposed electrical components can shock during troubleshooting and testing.
Do not touch exposed electrical components with the unit connected to
power, the result could be serious injury or death.
Electronic Valve Controller
NOTICE:
The electronic valve controller is factory programmed and non-serviceable.
There are two LEDs on the unit that can show the status of the controller and can help diagnose
issues.
If cycling the power does not clear a reported problem or the
reported problem does not pertain to a feature being used on
this HPU then the controller will need to be replaced.
Valve Controller Module Status LED:
GREEN steady . . . . . . . . . . . . . . . . . . . .Normal operation
RED 1 pulse . . . . . . . . . . . . . . . . . . . . . . .Output A (PRV) short detected
RED 2 pulses . . . . . . . . . . . . . . . . . . . . . .Output B (not used) short detected
GREEN 1 pulses . . . . . . . . . . . . . . . . . . .Output A (PRV) open detected
GREEN 2 pulses . . . . . . . . . . . . . . . . . . .Output B (not used) open detected
RED 3 pulses . . . . . . . . . . . . . . . . . . . . . .Input error detected, reference voltage error
GREEN 3 pulses . . . . . . . . . . . . . . . . . . .Power supply error
GREEN 4 pulses . . . . . . . . . . . . . . . . . . .Reverse retry fail error
RED 4 pulses . . . . . . . . . . . . . . . . . . . . . .Pot not centered at reset error
ORANGE 1 pulses . . . . . . . . . . . . . . . . .State error
Communication Status LED:
GREEN steady . . . . . . . . . . . . . . . . . . . .Normal operation
GREEN with ORANGE pulses . . . . . . . .Serial port (GUI) traffic
ORANGE/ RED pulsing. . . . . . . . . . . . .Receiving SAE J1939 traffic
RED 1 pulses . . . . . . . . . . . . . . . . . . . . . .SAE J1939 set point message timeout
RED 2 pulses . . . . . . . . . . . . . . . . . . . . . .SAE J1939 engine rpm message timeout
RED 3 pulses . . . . . . . . . . . . . . . . . . . . . .Pot not centered at reset error
ORANGE 1 pulses . . . . . . . . . . . . . . . . .State error
Electronic Valve
Controller
- Prop. O/P 1 ON
- Prop. O/P 2 ON
- Pulse I/P Active
- Digi. I/P 1 Active
- Digi. I/P 2 Active
Module
Status
Comm
Status
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