Snorkel TB 120 User Manual

ENVELOPE MANAGEMENT
SYSTEM (
EMS )
CALIBRATION MANUAL
MODELS
TB 120, PRO 100 & PRO 126
P/N 0191401
April 1997 - revised September 2000
Printed in the USA
Use this manual to calibrate all PRO 100, PRO 126 and TB 120
machines.
See table of contents for section that is for your machine.
DO NOT attempt to calibrate the
EMS system without having first
read and completely understanding the procedures described in this
manual.
ONLY qualified personnel, trained on the
EMS , should perform EMS
calibration procedures.
Should there be any question concerning anything covered in this
manual, contact the Snorkel Customer Service Department, telephone
816-364-0317 or for additional information.
Snorkel
P O Box 1160
St Joseph Mo 64502-1160
Phone: 816-364-0317

Snorkel TB 120 Specifications

General

Brand	Snorkel
Model	TB 120
Category	Lifting Systems
Language	English

Summary

SECTION I CALIBRATION

RAMP CALIBRATION

Procedure to set ramp speeds for boom movements.

FULL SPEED/HALF SPEED CALIBRATION

Procedure for calibrating full and half speed settings.

VALVE CALIBRATION

Procedure for calibrating the hydraulic valve functions.

BACKUP EMS CALIBRATION

Procedure for calibrating the backup EMS system.

SECTION II CALIBRATION

JOYSTICK CALIBRATION - (LIFT AND EXTEND)

Procedure for calibrating the joystick for lift and extend.

SENSOR CALIBRATION

Steps to calibrate the sensor system for boom positioning.

THREE POINT CALIBRATION

SECTION III CALIBRATION

PRIMARY JOYSTICK AND SENSOR CALIBRATION

Calibrating primary joystick and sensors for specific models.

BACKUP SENSOR CALIBRATION

Calibrating backup sensors for specific models.

FULL SPEED CALIBRATION

HALF SPEED CALIBRATION

TROUBLESHOOTING DESCRIPTION INDEX

1.0 Primary EMS errors during power-up

Troubleshooting primary EMS errors occurring during power-up.

2.0 Primary EMS errors that occur when joystick is at center

Joystick problem

Sensor error

2.2 Errors that allow boom to retract only at high attitude and to lower only at low attitude.

2.3 Undesired motion

3.0 Primary EMS errors during normal operation

3.1 Envelope control issues.

3.2 The joystick is deflected fully and the platform is not moving.

3.3 Slow motion in normal operation.

3.4 Intermittent errors.

4.0 Backup EMS errors (TB 120 and PRO 126 only)

4.1 Power-up and normal operation errors:

4.2 Wake-up check and warning:

5.0 Trouble shooting for system calibration errors

Joystick and sensor calibration error.

Troubleshooting errors in joystick and sensor calibration.

Valve calibration error.

Troubleshooting errors in valve calibration.