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RL1 31 MAINTENANCE MANUAL 2.3 M aintenanc e Functi on DA8ME C-10-030- A0 2.3- 2 2.3. 2 Locations of Sw itches Mai ntenanc e sw i t ch Enabl i ng sw i t ch

RL131

MAINTENANCE MANUAL

2.3 Maintenance Function

DA8MEC-10-030-A0

2.3-1

2.3. Maintenance Function

DA8MEC-10-030-A0

2.3.1 Introduction

 Objective

 The maintenance switch allows only the limited operations to be performed with safety covers open,

thus improving the work efficiency during maintenance.

 General Description

 The machine is provided with a maintenance switch (key switch); one on the front. This switch is used to

release the safety circuits.

 Turning ON the front maintenance switch disables the safety circuits of the transfer rail cover and front

cover.

 When the maintenance switch is turned ON, each axis teaching and operations via the sub-control

panel are partly permissible.

 Maintenance mode should be used only when recovering from any troubles which occurred on the

machines. As a rule, only the experienced maintenance engineer who have sufficient knowledge of the

machine are allowed to operate the equipment in this mode.

 We shall not be responsible for any accidents caused by the following;

Use of the maintenance switch by workers other than maintenance personnel.

Remodeling the maintenance switch by the user.

RL131

MAINTENANCE MANUAL

2.3 Maintenance Function

DA8MEC-10-030-A0

2.3-2

2.3.2 Locations of Switches

Maintenance switch

Enabling switch

RL131

MAINTENANCE MANUAL

2.3 Maintenance Function

DA8MEC-10-030-A0

2.3-3

2.3.3 Function

 Condition

 Maintenance switch is provided on the front of the machine.

This switch disable the safety interlock switch to perform maintenance work.

Maintenance SW ON

ON with safety stop

error cleared

Front

Safety interlock SW

(Front cover)

Rear

Safety interlock SW

(Rear cover)

Disabled

Enabled

Screen message During maintenance

Maintenance switch

abnormal

 Only NC axis jog movement is allowed during maintenance. (NC movement will be disabled.)

 Maintenance Switch

=REMARKS=

 When the maintenance switch is in the ON position, it is not possible to switch the active control

panel to the one on the rear side.

 Set the maintenance switch in the OFF position before turning power OFF.

 If power has been turned OFF with the maintenance switch ON, safety stop cannot be cleared

even if <ENABLING> + <START> are pressed. This is for the sake of safety. In such a case, turn

OFF the maintenance switch once and turn it back ON.

 After turning the maintenance switch ON and clearing a safety stop with <ENABLING> +

<START>, do not turn OFF the maintenance switch immediately.

 Doing so will ensure the safety of the machine itself, but an error will occur that will disable

continuous operation.

In this case, turn power OFF once and turn it back ON.

SW: TM3-8222EZ / S-N