Hyster G117 Operating instructions

Hyster G117 (H1050HD-16CH, H1150HD-16CH)
Internal Combustion Engine Trucks Service Repair
Manual

HYDRAULIC CONTROL
SYSTEM
H36XMS-12, H40XM-12, H44XM-12, H48XM-12
(H800HD, H1050HD) [B917];
H40XM-16CH, H44XM-16CH, H48-16CH,
H50-16CH, H52XM-16CH (H1050HD, H1150HD)
[G117]
PART NO. 4046726 1900 SRM 1561

SAFETY PRECAUTIONS
MAINTENANCE AND REPAIR
• The Service Manuals are updated on a regular basis, but may not reflect recent design changes to the
product. Updated technical service information may be available from your local authorized Hyster®
dealer. Service Manuals provide general guidelines for maintenance and service and are intended for
use by trained and experienced technicians. Failure to properly maintain equipment or to follow in-
structions contained in the Service Manual could result in damage to the products, personal injury,
property damage or death.
• When lifting parts or assemblies, make sure all slings, chains, or cables are correctly fastened, and
that the load being lifted is balanced. Make sure the crane, cables, and chains have the capacity to
support the weight of the load.
• Do not lift heavy parts by hand, use a lifting mechanism.
• Wear safety glasses.
• DISCONNECT THE BATTERY CONNECTOR before doing any maintenance or repair on electric lift
trucks. Disconnect the battery ground cable on internal combustion lift trucks.
• Always use correct blocks to prevent the unit from rolling or falling. See HOW TO PUT THE LIFT
TRUCK ON BLOCKS in the Operating Manual or the Periodic Maintenance section.
• Keep the unit clean and the working area clean and orderly.
• Use the correct tools for the job.
• Keep the tools clean and in good condition.
•Always use HYSTER APPROVED parts when making repairs. Replacement parts must meet or ex-
ceed the specifications of the original equipment manufacturer.
• Make sure all nuts, bolts, snap rings, and other fastening devices are removed before using force to
remove parts.
• Always fasten a DO NOT OPERATE tag to the controls of the unit when making repairs, or if the unit
needs repairs.
•Be sure to follow the WARNING and CAUTION notes in the instructions.
• Gasoline, Liquid Petroleum Gas (LPG), Compressed Natural Gas (CNG), and Diesel fuel are flamma-
ble. Be sure to follow the necessary safety precautions when handling these fuels and when working
on these fuel systems.
• Batteries generate flammable gas when they are being charged. Keep fire and sparks away from the
area. Make sure the area is well ventilated.
NOTE: The following symbols and words indicate safety information in this
manual:
WARNING
Indicates a hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor
or moderate injury and property damage.
On the lift truck, the WARNING symbol and word are on orange back-
ground. The CAUTION symbol and word are on yellow background.

©2014 HYSTER COMPANY
TABLE OF CONTENTS
General .....................................................................................................................................................................1
Description ...............................................................................................................................................................1
Control Valve .......................................................................................................................................................2
Analog Inputs ......................................................................................................................................................2
Joysticks/Levers ..............................................................................................................................................2
Sensors ............................................................................................................................................................ 3
Temperature Sensor ...................................................................................................................................3
Pressure Transducer .................................................................................................................................. 3
Accumulator Pressure Transducer ............................................................................................................3
Digital Inputs ...................................................................................................................................................... 3
Hydraulic Control Switches ........................................................................................................................... 3
Interrupts ............................................................................................................................................................ 3
Lift Interrupt (Twist Module) ........................................................................................................................ 4
Lower Interrupt (Twist Module) ....................................................................................................................4
Function Override ...........................................................................................................................................4
Operator Presence System (OPS) .................................................................................................................. 4
Digital Switched Inputs ......................................................................................................................................4
ECO eLo HiP Switch ...................................................................................................................................... 4
Not Locked Signal ...........................................................................................................................................4
(Lift Position, Tilt Position, Slew RH Position, Slew LH Position) Sensor ................................................. 4
Calibration Switch ..........................................................................................................................................4
Ignition Switch Signal ....................................................................................................................................4
Brake Filter Pressure Switch .........................................................................................................................4
Pressure Signal ...............................................................................................................................................4
CAN Bus Communication ...................................................................................................................................4
Output Signals .................................................................................................................................................... 5
Analog Outputs ...............................................................................................................................................5
Digital Outputs ...............................................................................................................................................5
Lowering Interrupt .....................................................................................................................................5
Accumulator Charge Enable ......................................................................................................................6
Hydraulic Relay Take Over ....................................................................................................................... 6
Programmed Features ........................................................................................................................................ 6
High Temperature Protection (Optional) ...................................................................................................... 6
Adjustable Loaded Vehicle Speed Reduction (Optional B917 only) .............................................................6
Traction Speed Limiter - Container Position (Optional G117 only) ............................................................ 7
Temperature Protection (Standard) .............................................................................................................. 7
Cold Temperature Protection (Standard) ......................................................................................................7
Traction Speed Limiter-Loaded (Standard) .................................................................................................. 7
Automatic Throttle Up (Standard) ................................................................................................................ 8
HiP/ECO eLo Operating Mode (Standard) ....................................................................................................8
Drive Over Lift (Standard) .............................................................................................................................8
FAN Drive System (Standard) .......................................................................................................................8
Hibernate Idle (Standard Tier 4 Only) ..........................................................................................................8
Settings ................................................................................................................................................................9
Adjustable Parameters ...................................................................................................................................9
Truck Configuration Screen .......................................................................................................................9
Installed Features Screen ..........................................................................................................................9
General Functions of the Interface .........................................................................................................................9
Main Functional Requirements ......................................................................................................................... 9
What is Needed for the Hydraulic User Interface Program .............................................................................9
Table of Contents
i

TABLE OF CONTENTS (Continued)
Installation of the Program ............................................................................................................................9
Start Screen .................................................................................................................................................. 12
Warning Screen ............................................................................................................................................ 13
Basic Screen Layout of the Hydraulic User Interface Program .................................................................14
Truck Configuration Screen .........................................................................................................................16
Installed Features Screen ............................................................................................................................ 18
Temperature Protection Screen ................................................................................................................... 20
High Temperature Protection (Optional) ................................................................................................20
Traction Speed Limiter - Container Position (Optional G117 only) .......................................................... 21
Adjustable Loaded Speed Reduction (Optional B917 only) ........................................................................22
Temperature Protection Screen ................................................................................................................... 23
Temperature Protection (Standard) ........................................................................................................23
Cold Temperature Protection (Standard) ............................................................................................... 23
Traction Speed Limiter - Loaded ................................................................................................................. 24
Automatic Throttle Up - Lift Screen ............................................................................................................25
HiP/ECO eLo Operating Mode Screen ........................................................................................................ 26
Drive Over Lift (Standard) ...........................................................................................................................27
Hibernate Idle Screen ...................................................................................................................................28
Fan Drive Settings Screen ........................................................................................................................... 29
Calibration Screen ........................................................................................................................................30
Calibrating the Connected Joystick/Lever Without the Interface Software .........................................30
Calibrating the Connected Joystick/Lever With the Interface Software .............................................. 31
Flow Settings Screen .................................................................................................................................... 31
Profile Lift Screen .........................................................................................................................................32
Valve Settings Screen ...................................................................................................................................33
Diagnostic Screen ......................................................................................................................................... 34
Active Errors Screen .....................................................................................................................................35
Error History Screen .................................................................................................................................... 36
All Parameters Screen ..................................................................................................................................37
Installing the Hydraulic Controller Software and Read-Only Parameter File .........................................39
File Download Screen ...............................................................................................................................39
Calibration .............................................................................................................................................................40
Calibrating the Lever With the Hydraulic User Interface Program ..............................................................40
Calibrating the Joystick With the Hydraulic User Interface Program ......................................................... 40
Calibrating the Lever Without the Hydraulic User Interface Program ........................................................ 41
Calibrating the Joystick Without the Hydraulic User Interface Program .................................................... 41
Fault Codes ............................................................................................................................................................42
Controller Pinning .................................................................................................................................................50
This section is for the following models:
H36XMS-12, H40XM-12, H44XM-12, H48XM-12 (H800HD, H1050HD) [B917];
H40XM-16CH, H44XM-16CH, H48-16CH, H50-16CH, H52XM-16CH (H1050HD,
H1150HD) [G117]
Table of Contents
ii

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General
This SRM describes the electronic hydraulic control
system, and its interaction with the Hydraulic User
Interface Program.
See the following resources for additional
information:
Hydraulic System 1900SRM1562
Diagrams 8000SRM1563
Description
The hydraulic system is operated through an elec-
trically-operated control valve that receives its sig-
nals from the hydraulic frame controller. The hy-
draulic frame controller contains the actual soft-
ware logic and therefore controls most of the out-
puts. It is located near the main control valve.
The hydraulic cab controller is placed in the side
console of the cabin and controls most of the input
signals. The two units communicate with each
other through CAN Bus, see Figure 1. The frame
controller determines what the accompanying out-
put must be.
Figure 1. CAN Bus Connections
1900 SRM 1561 General
1

The hydraulic controller has been programmed to
supply these output signals to the electrically-oper-
ated control valve depending on the following varia-
bles:
• Input signals
• Programmed functions
• Settings
See Figure 2.
A. CAB AND FRAME CONTROLLER INPUTS
B. SOFTWARE LOGIC CONTROLS
C. CAB AND FRAME CONTROLLER OUTPUTS
Figure 2. Control Flow
Output signals can be Pulse Width Modulation
(PWM) signals for proportional hydraulic functions,
digital signals for ON/OFF functions, or CAN Bus
messages for other linked controllers.
Both hydraulic controllers continually monitor the
system for fault conditions, display appropriate
fault codes, and take action when necessary.
Each controller requires a 24 volt power supply for
operation. Power is provided through the ignition
switch, the hydraulic controller relay, and a 30
amp fuse. There is a Red and Green LED next to
the main connector of each controller. The Green
LED is ON when the controller is powered. The
Red LED is ON when a hydraulic control system
fault condition is detected, and blinks when the
fault is related to a CAN Bus message.
CONTROL VALVE
The flow of hydraulic oil through the electrically-
operated control valve is determined by the position
of the spools. The position of each spool depends on
the electrical controller signal received at the ac-
tuation module for that spool.
For hydraulic functions that just require hydraulic
supply to be ON or OFF, the electrical signal is ON
or OFF as well. Operating voltage is ±24 volts (Sys-
tem Voltage).
For hydraulic functions that require flow control,
the desired spool position is obtained by a voltage-
controlled PWM (Pulse Width Modulation) signal.
Depending on the hydraulic function, the average
voltage varies in relation to the PWM duty cycle be-
tween ±8% and ±50% of the truck supply voltage at
the solenoid.
ANALOG INPUTS
Joysticks/Levers
Joysticks/Levers are used to proportionally control
the following functions:
• Lift and Lower
• Tilt Forward and Tilt Backward
• Aux0 (Power Pile Slope)
• Aux1 (Rotate)
Depending on the position of the joystick/lever, the
5-volt sensor supply signal from the controller is
converted to a signal between 0.5 volts and 4.5
volts. The neutral position of the joystick/lever
translates to a signal of 2.5 volts.
The controller monitors the signals provided by the
joystick/lever and if the signals are out of range,
the controller activates a fault code and enters a
fail safe mode. Joysticks/levers must be calibrated
before being put into service.
Calibration of the joystick/lever provides a refer-
ence to the controller for the two extreme and neu-
tral joystick/lever positions. The controller converts
the joystick/lever position input signal into a PWM-
output signal and sends it to the control valve.
Description 1900 SRM 1561
2

For backward joystick/lever movements, the joy-
stick/lever output signals are indicated with flow
direction A. For forward joystick/lever move-
ments, the joystick/lever output signals are indica-
ted with flow direction B. The specific joystick/
lever position and connector orientation prevent
joystick/lever directions from inadvertently result-
ing in incorrect oil flow directions.
Sensors
Additional analog input is provided by a tempera-
ture sensor and two pressure transducers.
Temperature Sensor
A temperature sensor at the bottom of the hy-
draulic tank has a resistance between 700 and 2000
Ω, depending on the hydraulic oil temperature.
The controller reacts to the temperature signal as
follows:
• When oil temperature is below −5°C (23°F),
the controller displays the fault code hcold.
• When Cold Temperature Protection is activa-
ted, the controller reduces maximum engine
speed by sending a CAN Bus message to the
engine.
• When oil temperature exceeds 90°C (194°F),
the controller displays the fault code hhot.
•When High Temperature Protection (op-
tional) is activated, the controller displays
the fault code hhot when oil temperature ex-
ceeds 88°C (190°F). When oil temperature
exceeds 90°C (194°F), the controller reduces
vehicle speed by sending a CAN Bus mes-
sage to the transmission.
See Programmed Features.
Pressure Transducer
A pressure transducer measuring the pressure in
the lift cylinders provides an input to the hydraulic
controller for the load being lifted. The signal is
used for the following standard/optional features:
• Traction Speed Limiter - Loaded
• Traction Speed Limiter - Container Position
When the sensor detects an error, receives an input
below 300 mv or above 5200 mv, a fault code is dis-
played and the features are turned OFF.
Accumulator Pressure Transducer
A pressure transducer measuring the accumulator
pressure in the main valve (port S ACC) provides
an input to the hydraulic controller for enabling/
disabling the electronically-controlled charge func-
tion:
• Charging is enabled when the accumulator
pressure is below ±16.5 MPa (±2393 psi) for
0.5 seconds.
• Charging is disabled at an accumulator pres-
sure of ±20.5 MPa (±2973 psi).
DIGITAL INPUTS
Hydraulic Control Switches
Five auxiliary functions can be activated by manual
switches (digital inputs): Aux_2, Aux_3, Aux_4,
Aux_5, and Aux_6.
• Aux_2 (Twist Locks) - Lock/Unlock
• Aux_3 (Hydraulic Stop) - Lock/Unlock
• Aux_4 (Side Shift) - Right/Left
• Aux_5 (Extend/Retract) - Extend/Retract
• Aux_6 (Reach) - Forward/Backward
Depending on the position of the switch, the con-
troller sends a 24 volt signal to the relevant sole-
noid valve.
INTERRUPTS
Interrupts disable the lifting/lowering functions un-
der specific circumstances. The interrupts are gen-
erated in the Twist Module depending on the fol-
lowing signals:
• Not Locked Signal
• Locked Signal
• All Seated Signals
There are separate interrupt signals for lowering
and lifting.
1900 SRM 1561 Description
3

Lift Interrupt (Twist Module)
The lift interrupt function disables the lift function
during locking and unlocking of the twist locks.
Both signals “Not Locked” and “Locked” are used to
generate this interrupt. When the lift interrupt is
active the tilt backward function is also disabled.
Lower Interrupt (Twist Module)
The lowering interrupt function disables the lower-
ing function when all “Seated” signals are active.
All “Seated” signals are used to generate this inter-
rupt. When the lowering interrupt is active the tilt
forward function is also disabled.
Function Override
The “Lift Interrupt” and “Lower Interrupt” signals
can be overruled by the input: Function Override.
The "Function Override" button, if it is included on
the truck, is located on the twist module.
Operator Presence System (OPS)
The OPS has an electrical switch in the seat that
sends a signal to disable the hydraulic lift/lower,
tilt forward/backward, and auxiliary functions 1
second after the OPS switch has been activated.
In order to reset the OPS and re-enable the hy-
draulic functions, the operator has to sit on the seat
again.
DIGITAL SWITCHED INPUTS
ECO eLo HiP Switch
The ECO eLo HiP Switch switches between HiP
(High Performance) and ECO eLo (Fuel Efficiency)
operating modes. The switch is located on the
truck's side console.
Not Locked Signal
The Not Locked signal is used for the traction
speed limiter – container position, to switch be-
tween max vehicle speed, vehicle speed limit 1, or
vehicle speed limit 2. See Programmed Features.
(Lift Position, Tilt Position, Slew RH Position,
Slew LH Position) Sensor
The lift position sensor together with the tilt, slew
right hand, and slew left hand position sensors act
as one input for the “Traction Speed Limiter – Con-
tainer Position (Optional G117 Only)”. The sensors
are located on the mast/gantry and depending on
the position of the mast/gantry, the speed limiter
switches between max vehicle speed, vehicle speed
limit 1 or vehicle speed limit 2. See Programmed
Features.
Calibration Switch
When the calibration switch is activated, the
charger enable output is deactivated. The calibra-
tion switch also disables the hibernate idle function
and the automatic throttle-up features to make
sure the truck operates in normal idle mode so the
operator can calibrate the transmission at a fixed
engine speed.
Ignition Switch Signal
The ignition switch signal is used to activate the
“Hydraulic Control Relay” to maintain battery
power for 10 seconds after the ignition switch is
turned off. This is to provide the fan drive valve
with power so the system can be powered down in a
steady way.
Brake Filter Pressure Switch
The brake filter pressure switch signal indicates
that the brake pressure filter has too high a restric-
tion and needs to be replaced. The hydraulic oil
temperature needs to be at least 40°C (104°F) be-
fore a fault code is generated.
Pressure Signal
The spreader sends a pressure signal to the hy-
draulic controller to give output on the auxiliary
valve so the spreader can lock/unlock the twist
locks.
CAN BUS COMMUNICATION
CAN Bus communication can consist of both input
and output signals.
The hydraulic controller communicates via the
CAN Bus circuit with the following controllers:
Description 1900 SRM 1561
4

•Instrument cluster - for displaying mes-
sages on the fault code display or turning
ON/OFF warning lights. See Fault Codes.
•Engine Control Module - for the Anti-
Stall, Automatic Throttle-Up, Hibernate
Idle, and Temperature Protection features.
See Programmed Features.
•Transmission Controller - for Vehicle
Speed, Traction Speed Limiter - Loaded,
Traction Speed Limiter - Container Position,
and Adjustable Loaded Vehicle Speed Reduc-
tion. See Programmed Features.
•Hydraulic Controllers - for communication
between both controllers.
OUTPUT SIGNALS
Output signals can be digital (ON/OFF), analog
(with a certain value and within a specified range),
or CAN bus messages. Depending on settings and
programmed features, output signals can be differ-
ent than standard programming. See Settings and
Programmed Features.
Analog Outputs
Analog signals for proportional hydraulic functions
are voltage-controlled PWM (Pulse Width Modula-
tion) outputs and operate within a nominal range of
±8% to ±50% of the truck's supply voltage.
There is a separate proportional control valve for
the following functions:
• Lower - Lift A
• Lift - Lift B1, Lift B2
• Tilt Forward - Tilt A
• Tilt Backward - Tilt B
• Aux - Aux A, Aux B
• Fan Drive - Fan Drive System
The letters A and B correspond to the flow direction
as intended by the lever/switch movement.
For lifting, lowering, and both tilt functions, there
are separate control valves to control movement
and direction.
The auxiliary functions use a separate digital
ON/OFF valve, in addition to the two proportional
control valves that determine flow direction, to ena-
ble/disable the hydraulic function.
The hydraulic fan drive system also uses a propor-
tional control valve to control the cooling fan speed/
cooling performance, which is dependent on four
temperature inputs:
• Engine Coolant Temperature
• Engine Charged Air Temperature
• Transmission Temperature
• Hydraulic Oil Temperature
The output for the fan drive system is a voltage-
controlled PWM (Pulse Width Modulation) signal.
Depending on the inputs, the current will vary be-
tween 250mA and 600mA. The fan speed/cooling
performance is higher when the current drops and
vice versa. See Programmed Features.
Digital Outputs
Digital signals are ON/OFF signals providing ±24
volts (System Voltage) when active (activated) and
0 volts when inactive (deactivated). In general, digi-
tal signals are used for auxiliary functions.
The following outputs are available for auxiliary
functions:
• Digital Out Aux_0 - Power Pile Slope (G117)/
Side Shift (B917)
• Digital Out Aux_1 - Rotation
• Digital Out Aux_2 - Twist locks
• Digital Out Aux_3 - Hydraulic Stop Lock
• Digital Out Aux_3 - Hydraulic Stop Unlock
• Digital Out Aux_4 - Side Shift (G117 only)
• Digital Out Aux_5 - Extend/Retract
• Digital Out Aux_6 - Reach
Lowering Interrupt
Digital output Pin 33 (Lowering Interrupt – Blue
Light Twist Module) of the cab controller is used to
provide input to the Twist module. The Lowering
interrupt is activated when the input signal “Low-
ering interrupt” of the frame controller is active
and the “function override” input is NOT active.
1900 SRM 1561 Description
5

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

The preset load value is adjustable by lifting a load
that is equal to the switching point of where the
speed limiter becomes activated and then pressing
the set button on the “Adjustable Loaded Vehicle
Speed Reduction Screen”. The load is represented
as a percentage of 24.0 MPa (3480 psi).
The required input signal is provided by the pres-
sure transducer located in the lift section of the
main valve.
Traction Speed Limiter - Container Position
(Optional G117 only)
The container position vehicle speed reduction fea-
ture reduces the maximum allowed vehicle speed,
depending on the position of the container.
When no container is picked up, the vehicle speed
limiter feature is inactive. If a container is picked
up and the container position is in a safe driving
position, vehicle speed is limited to approximately
15 km/h (9 mph) (Vehicle Speed Limit 1).
If a container is picked up and the container posi-
tion is in an unsafe driving position, vehicle speed
is limited to approximately 8 km/h (5 mph) (Vehicle
Speed Limit 2). See Table 1.
Table 1. Vehicle Speed Limiter Feature
Speed Limitation Load
Lift Position
Sensor
Tilt Position
Sensor
Slew RH
Position
Sensor
Slew LH
Position
Sensor
None None Not Applicable Not Applicable Not Applicable Not Applicable
Vehicle Speed Limit #1 Yes Active Active Active Active
Vehicle Speed Limit #2 Yes One of these four inputs is inactive
Temperature Protection (Standard)
The Temperature Protection feature warns the op-
erator of extreme hydraulic oil temperatures by dis-
playing the fault code hcold when hydraulic oil
temperature is less than −5°C (23°F), or hhot when
hydraulic oil temperature is greater than
90°C (194°F). When the fault code hhot is dis-
played, a warning light turns ON at the same time.
Cold Temperature Protection (Standard)
Depending on the hydraulic oil temperature, engine
speed is reduced proportionally in order to protect
the hydraulic pumps against cavitation. See Ta-
ble 2 for the relationship between temperature and
maximum engine speed. When Cold Temperature
Protection is activated, the fault code hcold is dis-
played.
Table 2. Temperature and Maximum Engine
Speed
Temperature Maximum RPM
−5°C (23°F) Unrestricted
−10°C (14°F) 1600
−13°C (9°F) 1200
−20°C (4°F) 1000
Traction Speed Limiter-Loaded (Standard)
The “Traction Speed Limiter-Loaded” feature limits
vehicle speed when a load is detected. A pressure
transducer located in the lift section of the main
valve provides an input to the hydraulic controller
for the load to be lifted. When the load is equal to
or greater than 3000 kg (6614 lb), the speed limiter
is activated. The parameter for setting the speed
limiter is adjustable by the dealer from a range of 5
to 20 km/h (3 to 12 mph), with a default value of
20 km/h (12 mph).
1900 SRM 1561 Description
7

Automatic Throttle Up (Standard)
This feature automatically increases engine speed
when the lift function or one of the tilt functions is
applied. The relationship between lever movement
and engine speed increase is defined in a graph dis-
played on the screen. Maximum engine speed in-
crease is 80% for lift and tilt functions. The Auto-
matic Throttle Up feature is only active when the
transmission is NOT in gear or when it is in in-
ching mode.
HiP/ECO eLo Operating Mode (Standard)
The ECO elo feature allows the operator to choose
between high performance (HiP) or fuel efficiency
(ECO elo) modes. Selection between the HiP and
ECO modes is made by means of a key switch loca-
ted on the side console.
The High Performance mode (HiP) provides the
normal engine settings and performance behavior.
The ECO eLo mode smoothens throttle reaction
time, therefore increasing fuel efficiency. Engine
speed is only reduced when the transmission is en-
gaged or when a hydraulic function is applied. Max-
imum engine speed is reduced to 2000 rpm.
Drive Over Lift (Standard)
The Drive Over Lift feature prioritizes driving per-
formance over lift performance when driving and
lifting occur at the same time.
The amount of lifting performance is reduced by
disabling the second lift section. The second lift sec-
tion is disabled under the following circumstances:
• The transmission is engaged (Driving/Not In-
ching)
• Engine speed is less than 1350 rpm
FAN Drive System (Standard)
The FAN drive system is a standard feature that
proportionally controls the cooling performance of
the cooling fan. Depending on four temperature in-
puts, the hydraulic controller determines the out-
put for the FAN drive system. See Table 3.
The Minimum and Maximum input temperatures
determine the normal operating range, with the
Minimum input corresponding to 10% cooling per-
formance and the Maximum input corresponding to
90% cooling performance.
When one of the temperature inputs exceed the
Limit temperature input, the output for the fan
drive is set to 100% cooling performance.
Hibernate Idle (Standard Tier 4 Only)
The Hibernate Idle feature ramps down engine
speed if the truck has been left to idle without oper-
ator interaction for 30 seconds (no hydraulic opera-
tions or accelerator pedal have been applied), to im-
prove fuel economy during extended idle periods.
Engine speed is ramped up when one of the hy-
draulic functions is applied or when the accelerator
pedal is applied. When the calibration switch is ac-
tivated the hibernate idle function is disabled, al-
lowing the truck to be calibrated.
Table 3. Temperature Inputs
Temperature Input Minimum
Temperature
Maximum
Temperature Limit Temperature
Transmission Oil 95°C (203°F) 110°C (230°F) 120°C (248°F)
Engine Coolant 90°C (194°F) 99°C (210°F) 107°C (225°F)
Engine Charged Air 55°C (131°F) 66°C (151°F) 93°C (199°F)
Hydraulic Oil 75°C (167°F) 85°C (185°F) 90°C (194°F)
Description 1900 SRM 1561
8

SETTINGS
Several parameters of the hydraulic controller are
adjustable and can be set using the Hydraulic User
Interface Program. Following is an overview of pro-
gram parameters that are adjustable at dealer
level.
Instructions for making adjustments to program
parameters are listed in the description for the Hy-
draulic User Interface Program. See also Table 4
for an overview of relevant program screens.
Adjustable Parameters
Truck Configuration Screen
• Truck setup selection
Installed Features Screen
Optional Features:
• High Temperature Protection
• Traction Speed Limiter - Container Position
• Adjustable Loaded Vehicle Speed Reduction
Standard Features:
• Traction Speed Limiter - Loaded
Flow Settings:
• Flow Value's Power Pile Slope (G117)/Side
Shift (B917)
• Flow Value's Rotate
• Flow Value's Twist Locks
• Flow Value's Power Dampening
• Flow Value's Side Shift
• Flow Value's Extend Retract
• Flow Value's Reach
General Functions of the Interface
MAIN FUNCTIONAL REQUIREMENTS
• Set the truck configuration (container han-
dler/fork lift truck).
• Reset all changed parameters back to factory
settings.
• Disable features/parameters for diagnostic
reasons or personal preference.
• Select different languages (English, French,
German, Italian, or Spanish).
WHAT IS NEEDED FOR THE HYDRAULIC
USER INTERFACE PROGRAM
1. A PC with the Hydraulic User Interface Pro-
gram installed and a free USB port.
2. An IFAK interface (Hyster part 1532578)
and an IFAK interface cable (Hyster part
1534009) to connect the PC to the control-
ler(s) on the truck.
3. A truck equipped with a hydraulic controller.
Installation of the Program
The Hydraulic User Interface program is available
via Hypass Online.
After downloading the program, double-click the in-
stallation icon. The program automatically installs
the Hydraulic User Interface Program and all re-
quired drivers for the IFAK interface cable.
After installation is complete, the IFAK interface
cable can be connected to the truck at the three-pin
Deutsche DT connector located in the side console
with the label "HYD".
Connect the other end of the cable to a free USB
port on the PC.
Double-click the Hydraulic User Interface Program
icon. The icon is placed on the PC desktop after in-
stallation. See Figure 3.
1900 SRM 1561 Description
9

Figure 3. Service Icon
The following Hydraulic User Interface Program
screens are accessible at dealer level. All related
parameters are adjustable.
Table 4. Hydraulic User Interface Program Overview
Hydraulic User Interface Program Screen Access Level
Affected ParametersName Main Screen Sub- Screen Dealer
Start Screen Not Applicable Not applicable
Warning Screen Not Applicable Not applicable
Truck
Configuration
Screen
Yes •Truck setup selection
Installed Features
Screen
Yes
• High Temperature
Protection
• Traction Speed Limiter -
Container Position
• Adjustable Loaded Vehicle
Speed Reduction
• Cold Temperature
Protection
• Traction Speed Limiter -
Loaded
• Automatic Throttle-Up
• HiP/ECO eLo Operating
Mode
• Drive Over Lift
General Functions of the Interface 1900 SRM 1561
10

Table 4. Hydraulic User Interface Program Overview (Continued)
Hydraulic User Interface Program Screen Access Level
Affected ParametersName Main Screen Sub- Screen Dealer
Temperature
Protection Screen
Yes Not applicable
Calibration Screen Yes Not applicable
Diagnostic Screen Yes Not applicable
Active Errors
Screen
Yes Not applicable
Error History
Screen
Yes Not applicable
All Parameters
Screen
Yes Not applicable
1900 SRM 1561 General Functions of the Interface
11

Start Screen
The Start Screen displays automatically upon
startup of the Hydraulic User Interface Program. It
provides basic information about the system such
as the truck’s serial number (SN), the name of the
application, the version (Ver) number of the inter-
face program, and the corresponding part number
(PN). See Figure 4.
The truck’s serial number is programmed into the
hydraulic controller from the Read-Only Parameter
(ROP) File. The serial number entered in the hy-
draulic controller can be changed by downloading
another ROP file.
When the truck serial number programmed in the
ROP file does not match the truck’s initial truck se-
rial number, the optional features are disabled and
exclamation marks will display in place of the truck
serial number in the box at the top of the screen.
Users can select the desired language before click-
ing on the Continue button to advance to the next
screen.
Figure 4. Start Screen
General Functions of the Interface 1900 SRM 1561
12

Warning Screen
The Warning screen is an additional reminder to
users to always click the Download Parameters
button or to press the F4 key to save changed pa-
rameters to the hydraulic controller. See Figure 5.
To update information for a particular screen, click
on the Upload Parameters button or press the F2
key.
Clicking on the Click here to Continue button
advances the program to the next screen.
Figure 5. Warning Screen
1900 SRM 1561 General Functions of the Interface
13

Basic Screen Layout of the Hydraulic User
Interface Program
A list of screen icons appear along the left margin
of each screen and when clicked on serve as short-
cuts to other screens within the program. See Fig-
ure 6.
Following is a brief description of each of these
screens:
1. Truck Configuration Screen
Contains all basic truck configuration settings
and provides access to the All Parameters
screen.
2. Installed Features Screen
Enables/disables available software-enabled op-
tions or standard features.
3. Calibration Screen
Calibrates the joystick/levers following replace-
ment or failure, or after replacing a hydraulic
controller. See also Calibration.
4. Flow Settings Screen
Adjusts flow demands for lifting/tilting and all
auxiliary functions.
5. Valve Settings Screen
Displays the settings for the electric/hydraulic
valves.
6. Diagnostic Screen
Displays the most common hydraulic controller
signals and allows users to quickly identify prob-
lems or issues.
7. Active Errors Screen
Provides an overview of actual active errors and
provides access to the error history screen.
8. Active Errors Indicator
Takes users to the Active Errors Screen. The
box to the left of the icon displays the number of
active errors.
9. Truck Serial Number
Displays the truck serial number that is pro-
grammed in the hydraulic controller.
10. Upload Parameters Button
Refreshes the parameters displayed on the active
screen.
11. Download Parameters Button
Saves the parameters displayed on the active
screen.
General Functions of the Interface 1900 SRM 1561
14