Table of Contents
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Applicable Model
NL1500/500
NL1500S/500
NL2000/500
NL2000S/500
NL2500/700
NL2500S/700
NL2500S/1250
NL3000/2000
NL3000/3000
Applicable NC Unit
M720BM (MSX-850IV)
Before starting operation, maintenance, or programming, carefully read the
manuals supplied by Mori Seiki, the NC unit manufacturer, and equipment
manufacturers so that you fully understand the information they contain.
Keep the manuals carefully so that they will not be lost.
MAINTENANCE MANUAL
NL1500MC/500
NL1500SMC/500
NL2000MC/500
NL2000SMC/500
NL2500MC/700
NL2500SMC/700
NL2500MC/1250
NL2500SMC/1250
NL3000MC/700
NL3000MC/1250
NL3000MC/2000
NL3000MC/3000
NL1500Y/500
NL1500SY/500
NL2000Y/500
NL2000SY/500
NL2500Y/700
NL2500SY/700
NL2500Y/1250
NL2500SY/1250
NL3000Y/700
NL3000Y/1250
NL3000Y/2000
NL3000Y/3000
HX-NL_4-C2JPEN
2011.06.P
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Table of Contents
Related Manuals for mori seiki NL2500Y/700
Summarization of Contents
Signal Word Definition
DANGER
Imminent hazard leading to death or serious injury if not avoided.
WARNING
Potential hazard leading to death or serious injury if not avoided.
CAUTION
Potential hazard leading to minor injury or machine damage if not avoided.
NOTE
Indicates items that require consideration or reference.
Example
Indicates program-applied examples.
FOR SAFE MACHINE OPERATION
1 FOR USERS AND SUPERVISORS
Guidelines for users and supervisors on machine operation and safety.
2 PRECAUTIONS FOR OPERATORS
Essential safety precautions for machine operators to prevent accidents.
3 FIRE PREVENTION AND COUNTERMEASURE
Measures for preventing fires and handling fire emergencies related to machine operation.
4 SAFETY DEVICES
Details on safety devices integrated into the machine for operator protection.
5 CAUTION LABELS
Explains the meaning and importance of caution labels affixed to the machine.
6 WORKING ENVIRONMENT
Requirements for a safe and efficient working environment around the machine.
7 MACHINE OPERATION
Instructions and guidelines for operating the machine.
MAINTENANCE AND INSPECTION
8-1 Machine Management
Guidelines for managing machine keys, tools, and safety devices.
CHAPTER 1 REGULAR MAINTENANCE
1 IMPORTANCE OF INSPECTIONS
Explains why regular inspections are crucial for machine accuracy and longevity.
2 REGULAR INSPECTION LIST
A comprehensive list of regular inspection items and their intervals.
3 MAINTENANCE ROUTE MAP
Visual guide showing the location of components and related maintenance procedures.
OILS
4-1 Recommended Oils
Lists recommended oils and their specifications for different machine parts.
4-2 Oil Equivalents
Provides equivalent product names for recommended oils for user convenience.
LIMIT SWITCH/SOLENOID VALVE INSTALLATION POSITIONS
5-1 NL1500, NL2000, NL2500, NL3000/700, NL3000/1250
Diagrams showing limit switch locations for specific NL series models.
5-2 NL3000/2000, NL3000/3000
Diagrams showing limit switch locations for different NL series models.
5-3 Limit Switch/Solenoid Valve List
A list of all limit switches and solenoid valves with their addresses and functions.
MACHINING CHAMBER
7-1 Replacing Machining Chamber Observation Window
Steps for replacing the observation window of the machining chamber.
7-2 Cleaning Inside Machine
Instructions for cleaning the interior of the machine.
7-3 Cleaning Chuck
Procedure for cleaning the machine's chuck.
COOLANT UNIT
10-1 Precautions when Selecting Coolant
Guidelines for selecting appropriate coolants and warnings about flammable types.
10-2 Replenishing Coolant
Steps for refilling the coolant tank to the correct level.
10-3 Cleaning Coolant Tank and Filter (Chip Conveyor Right Side Discharge Specifications)
Procedure for cleaning the coolant tank and filter for specific chip conveyor configurations.
10-4 Cleaning Coolant Tank and Filter (Chip Conveyor Rear Discharge Specifications)
Procedure for cleaning the coolant tank and filter for different chip conveyor configurations.
10-5 Adjusting Coolant Discharge Rate
Instructions on how to adjust the coolant flow rate using the discharge rate adjusting valve.
10-6 Coolant Pump
Information on coolant pump models and their specifications for maintenance.
10-7 Adjusting Oil Skimmer Separation Tank Drain (Option)
Guide to adjusting the oil skimmer drain nut for proper oil separation.
10-8 Flow of Coolant and Positions where Used (Chip Conveyor Right Side Discharge Specifications)
Diagram illustrating coolant flow paths for specific chip conveyor setups.
10-9 Flow of Coolant and Positions where Used (Chip Conveyor Rear Discharge Specifications)
Diagram illustrating coolant flow paths for alternative chip conveyor setups.
10-10 Coolant Gun (Option)
Instructions for using and cleaning the optional coolant gun.
HYDRAULIC UNIT
11-1 Precautions when Performing Maintenance Work
Safety precautions before performing maintenance on the hydraulic unit.
11-2 Checking Oil Level/Replenishing Oil
Steps to check and refill the hydraulic oil level.
11-3 Replacing Oil
Procedure for replacing the hydraulic oil.
11-4 Checking Pressure Gage
How to check the hydraulic pressure gauge readings.
11-5 Cleaning Radiator
Instructions for cleaning the hydraulic unit radiator.
11-6 Cleaning Suction Strainer and Tank
Procedure for cleaning the suction strainer and tank of the hydraulic unit.
11-7 Filter Element Replacement of Line Filter
Steps for replacing the filter element in the hydraulic line filter.
11-8 Flow of Hydraulic Oil and Positions where Used
Diagrams illustrating hydraulic oil flow paths and component locations.
11-9 Hydraulic Circuit Diagram
Diagrams showing the hydraulic circuit for various machine models.
LUBRICATING UNIT
12-1 Replenishing Lubricant
Instructions for refilling lubricant into the lubricating unit.
12-2 Cleaning Line Filter
Procedure for cleaning the line filter for the lubricating unit.
12-3 Cleaning Lubricant Tank, Suction Filter and Fill Port Filter
Steps for cleaning the lubricant tank, suction filter, and fill port filter.
12-4 Flow of Lubricant and Positions where Used (Standard Specifications)
Diagram showing lubricant flow paths for standard machine specifications.
12-5 Flow of Lubricant and Positions where Used (Y-Axis Specifications)
Diagram showing lubricant flow paths for Y-axis specification machines.
OIL TEMPERATURE CONTROLLER
13-1 Cleaning Air Filter and Condenser
Procedure for cleaning the air filter and condenser of the oil temperature controller.
13-2 Replacing Cooling Oil
Steps for replacing the cooling oil in the system.
13-3 Flow of Cooling Oil and Positions where Used (NL1500, NL2000, NL2500/700, NL3000/700, NL3000/2000, NL3000/3000)
Diagram showing cooling oil flow paths for specific machine models.
13-4 Flow of Cooling Oil and Positions where Used (NL2500/1250, NL3000/1250)
Diagram showing cooling oil flow paths for other specific machine models.
COOLANT COOLING UNIT (OPTION)
14-1 Precautions when Using Coolant Cooling Unit
Safety precautions for operating the optional coolant cooling unit.
14-2 Cleaning Air Filter and Condenser
Procedure for cleaning the air filter and condenser of the coolant cooling unit.
SEMI DRY-CUT SYSTEM (OPTION)
15-1 Adjusting Oil Supply Quantity
How to adjust the oil supply quantity for the semi dry-cut system.
15-2 Replenishing Oil
Steps for replenishing oil in the semi dry-cut system.
PNEUMATIC DEVICES
16-1 Precautions when Performing Maintenance Work on Pneumatic Devices
Safety precautions before performing maintenance on pneumatic devices.
16-2 Air Pressure Inspection and Adjustment
How to inspect and adjust air pressure in pneumatic systems.
16-3 Manual Draining from Air Filter
Procedure for manually draining the air filter.
16-4 Air Filter Inspection and Element Replacement
Steps for inspecting and replacing the air filter element.
16-5 Flow of Compressed Air and Positions where Used
Diagram showing compressed air flow paths and component locations.
16-6 Air Circuit Diagram (NL1500, NL2000, NL2500, NL3000/700, NL3000/1250)
Air circuit diagram for specific machine models.
16-7 Air Circuit Diagram (NL3000/2000, NL3000/3000)
Air circuit diagram for other specific machine models.
ELECTRICAL CABINET
17-1 Electrical Cabinet View
Overview of the electrical cabinet layout and components.
17-2 Opening/Closing Electrical Cabinet Door
Procedures and precautions for opening and closing the electrical cabinet door.
17-3 Cleaning Electrical Cabinet Fan
Instructions for cleaning the fan inside the electrical cabinet.
17-4 Replacing Batteries
Steps for replacing the batteries in the electrical cabinet.
CHIP CONVEYOR (OPTION)
18-1 Precautions when Using Chip Conveyor
Safety precautions for operating the optional chip conveyor.
18-2 Operating Chip Conveyor
Instructions for operating the chip conveyor.
18-3 Cleaning Chip Conveyor
Procedure for cleaning the chip conveyor.
18-4 Adjusting Chip Conveyor Belt
How to adjust the tension of the chip conveyor belt.
HIGH PRESSURE COOLANT UNIT (OPTION)
19-1 Suction Pressure Inspection and Adjustment
How to inspect and adjust suction pressure for the high pressure coolant unit.
19-2 Cleaning Notch Clean Filter
Procedure for cleaning the notch clean filter.
19-3 Replenishing Coolant to Clean Tank
Steps for refilling coolant into the clean tank.
19-4 Cleaning Coolant Tank
Procedure for cleaning the coolant tank.
19-5 High Pressure Pump Oil Replacement and V-Belt Inspection
Steps for replacing pump oil and inspecting the V-belt for the high pressure unit.
CHAPTER 2 TROUBLESHOOTING
1 ALARM MESSAGE
Information on NC and PLC alarms, including causes and troubleshooting steps.
1-1 NC Alarm
Details of alarms related to the numerical controller (NC) and their resolution.
1-2 PLC Alarm (Alarm Starting with “EX”)
Information on PLC alarms, particularly those starting with "EX", and their troubleshooting.
2 INPUT/OUTPUT SIGNAL CONFIRMATION PROCEDURE
Method for confirming input/output signals to diagnose machine malfunctions.
3 MALFUNCTIONS AT MAIN POWER ON
Troubleshooting steps for issues occurring after turning on the main power.
3-1 Screen Not Displayed when Power Turned ON
Steps to diagnose and resolve issues where the screen remains blank after power on.
3-2 Screen Displayed but Cannot Advance when [OK] Soft-Key Pushed
Troubleshooting for situations where the screen is visible but unresponsive to soft-key input.
3-3 ‘OPEN THE DOOR THEN CLOSE’ Display does Not Disappear when Door Opened/Closed
Steps to resolve the persistent door open/close display issue.
3-4 When EX0451 or EX0457 are displayed
Troubleshooting for specific servo/spindle amplifier alarms (EX0451, EX0457).
3-5 EX0069 ‘DOOR LOCK TIME OVER’
Resolution for the EX0069 alarm related to door lock time override.
4 WHEN BATTERY REPLACEMENT REQUESTED
Information and procedures for replacing machine batteries.
4-1 Message Requesting Battery Replacement
How to respond to messages indicating the need for battery replacement.
4-2 Battery Low Voltage Alarms
Understanding and resolving alarms related to low battery voltage.
5 ZERO POINT RETURN COMMAND ALARM TRIGGERED
Procedure for resolving alarms related to zero point return commands.
6 SOFT-OVERTRAVEL ALARM
Explains the soft-overtravel alarm and how to cancel it.
7 COOLANT UNIT PROBLEMS
Troubleshooting common issues with the coolant unit.
7-1 ‘EX1557 (COOLANT FLOW TOO LOW)’
Resolving the EX1557 alarm indicating low coolant flow.
7-2 ‘EX0578 (COOLANT OIL LEVEL LOW)’
Troubleshooting the EX0578 alarm for low coolant oil level.
7-3 When Coolant Spills on the Floor
Inspections to perform if coolant spills on the floor.
7-4 When Coolant is Not Supplied
Steps to diagnose and resolve issues where coolant is not supplied.
8 HYDRAULIC UNIT ALARMS
Common alarms related to the hydraulic unit and their troubleshooting.
8-1 ‘EX2568 (HYDRAULIC UNIT ALARM)’
Troubleshooting the EX2568 alarm for general hydraulic unit issues.
8-2 Alarm Not Triggered but Hydraulic Unit Operation Abnormal
Diagnosing abnormal hydraulic unit operation without specific alarm triggers.
9 LUBRICATING UNIT ALARMS
Common alarms related to the lubricating unit and their troubleshooting.
9-1 ‘EX0562 (LUBRICANT PRESSURE LOW)’
Resolving the EX0562 alarm indicating low lubricant pressure.
9-2 Checking Lubricating Unit Operation
Steps to check the operational status of the lubricating unit.
9-3 Lubricating Unit Air Removal
Procedure for removing air from the lubricating unit's piping.
9-4 Lubricating Unit Relief Valve Disassembly/Cleaning
Steps for disassembling and cleaning the lubricating unit's relief valve.
9-5 Lubricating Unit Relief Valve Adjustment
How to adjust the lubricating unit's relief valve.
9-6 Lubricating Unit Lubricant Leakage Check
Procedure for checking lubricant leakage from the lubricating unit.
ALARM RELATED TO TURRET
11-1 ‘EX0357 (TURRET INDEX TIME OVER)’
Resolving the EX0357 alarm for turret indexing time overruns.
WHEN SUB-STANDARD MACHINING OCCURS
12-1 Adjusting Machine Level
How to adjust the machine's level to improve machining precision.
12-2 Backlash Check
Procedure for checking backlash in the machine's axes to ensure accuracy.
12-3 Headstock Inclination Adjustment
Steps for adjusting headstock inclination to correct machining errors.
12-3 Turret Inclination Adjustment
Procedure for adjusting turret inclination to prevent component interference.
12-4 Turret Center-Height Adjustment
Steps for adjusting the turret's center height for accurate machining.
12-5 Tailstock Center Adjustment
Procedure for adjusting the tailstock center for proper workpiece support.
12-6 Headstock 2 Center Adjustment
Steps for adjusting the headstock 2 center for accurate workpiece alignment.
TOOL PRESETTER STYLUS BREAK STEM REPLACEMENT
14-1 Adjusting Stylus
Steps for adjusting the stylus position after replacement for accurate tool setting.
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