Accumulator Charge Enable
Digital output Pin 39 (Accumulator Charge Enable)
of the cab controller controls the charging of the ac-
cumulator. Charging of the accumulator is enabled/
disabled under the following circumstances:
Charging Disabled:
- During engine cranking and 5 seconds after
the engine is running to preserve the starter
motor.
- Calibration switch activated
- Charge Pressure Transducer Error condi-
tion active
- Charging/Accumulator pressure is equal to
or greater than ±20.5 MPa (±2973 psi).
Charging Enabled:
- Charging/Accumulator pressure is equal to
or less than ±16.5 MPa (±2393 psi) for 0.5
seconds.
Hydraulic Relay Take Over
Digital output Pin 44 (Relay Take Over) of the cab
controller is used to activate the relay “Hydraulic
Control Relay” to maintain battery power for 10
seconds after the ignition switch is turned off. This
is to provide power to the proportional valve of the
fan drive system so the fan speed can be powered
down in a steady way.
The proportional valve of the fan drive system must
be energized to reduce fan speed, and the fan's full
speed is reached when the valve is not energized at
all. This is done to achieve a fail safe operation of
the cooling fan.
PROGRAMMED FEATURES
The controller has been programmed for a number
of standard features and can be programmed for
optional features as well.
The following features are optional and can be
turned ON/OFF if they are included on the truck:
Optional Features
• High Temperature Protection
• Traction Speed Limiter - Container Position
• Adjustable Loaded Vehicle Speed Reduction
The following features are standard and can be
turned ON/OFF and adjusted at the dealer/
customer level:
Standard Features
• Traction Speed Limiter - Loaded
The following features are standard and can be
turned ON/OFF, but only by requesting a new P1T
file at the service department:
Standard Features
• Cold Temperature Protection
• Automatic Throttle-Up
• HiP/ECO eLo Operating Mode
• Drive Over Lift
The following features are standard and CANNOT
be turned off:
Standard Features
• Fan Drive
• Hibernate Idle
High Temperature Protection (Optional)
When High Temperature Protection is activated,
the fault code hhot is displayed when the hydraulic
temperature is greater than 88°C (190°F), and a
warning light is illuminated on the operator's dis-
play. The high temperature protection feature lim-
its vehicle speed to 10 km/h (6 mph) when the hy-
draulic
oil
temperature
is
greater
than
90°C (194°F) for 120 seconds to reduce heat gener-
ated during braking.
Adjustable Loaded Vehicle Speed Reduction
(Optional B917 only)
When the load to be lifted exceeds the preset value
for load saved in the hydraulic controller, the ad-
justable Loaded Vehicle Speed Reduction feature
limits vehicle speed to a preset value saved in the
hydraulic controller.
The value for vehicle speed is adjustable from a
range of 5 to 20 km/h (3 to 12 mph) with a default
setting of 20 km/h (12 mph).
Description
1900 SRM 1561
6
