SL940-Install-Ops-Maintenance-7210918_B.pdf - 第47页
Safety 2- 13 2.11 Interl ock The inte rlo ck is a n electronic connec tion that imm ediately cuts the power to any motio n and pneumatic actuators. I f the dispens ing area hood is opened during dispens ing, the interloc…
2-12 Safety
2.10.1 Emergency Shutdown Situations
As a minimum, activate the EMO in the following situations:
WARNING! CAUTION!
In an emergency, failure to completely shut down power to the coating system
with the EMO can cause serious injury to the user and/or damage to the coating
system.
• If anyone is in immediate danger of being injured by moving parts, hazardous materials, or
electrical shock.
• If valuable coating system components or the workpieces are in danger of being damaged.
This can include:
- Physical damage to the dispensing valve or workpiece by unexpected dispensing
head movement.
- Electrical damage to the coating system.
2.10.2 Emergency Shutdown Recovery
WARNING! CAUTION!
Do not restart the dispensing operation until the condition that caused the
emergency shutdown has been corrected. Failure to comply could cause serious
injury to the user and/or serious damage to the coating system.
NOTE If the Main Circuit Breaker has been tripped, you will need to restart the coating system
as specified in 4.7 Powering On the System.
To recover after an emergency shutdown:
1. Open the hood and clear the conveyor of all workpieces.
2. Locate and remedy the cause of the emergency shutdown. If necessary, refer to Section 8 -
Troubleshooting.
3. Close the front hood.
4. Turn the EMO knob clockwise until it pops back into position.
5. Press the
Start (I) button on the front panel.
6. Restart your dispensing program. See 5.17 Loading a Program and 5.18 Running a Program.
Safety 2-13
2.11 Interlock
The interlock is an electronic connection that immediately cuts the power to any motion and pneumatic
actuators. If the dispensing area hood is opened during dispensing, the interlock is activated and all
dispensing activity immediately stops to protect the operator from injury. There is a second interlock
device inside the front cabinet on the spill pan to ensure an appropriate ventilation path when the drawer
is pulled out for maintenance.
2.11.1.1 Interlock Shutdown
When an interlock shutdown occurs, the motor power turns OFF, the system loses master references, and
the red beacon light illuminates. The program WILL NOT resume from where it stopped.
To recover from a shutdown triggered by the Interlock:
1. Close the dispensing area hood.
2. Restart the dispensing program. See 5.17 Loading a Program and 5.18 Running a Program.
2.12 Service Shutdown
Before performing any service or parts replacement, the coating system should be shut down as follows:
1. Shutdown the coating system as described in 5.11.2.4 Service Shutdown.
2. Perform a “Lockout/Tagout of Electrical and Pneumatic Energy” as described below.
2.13 Lockout of Electrical and Pneumatic Energy
Companies may differ in their Lockout/Tagout (LOTO) procedures and requirements, and it is the
responsibility of the end user to determine compliance with local safety procedures. The purpose of any
LOTO effort is to help avoid injury or coating system damage due to unexpected energizing of
equipment, start up, or the release of stored energy during repair, maintenance, and operation of
equipment. Situations where LOTO practices may be employed on the SL-940E/SL-941E include:
• Adjusting cables, belts, pulleys, or moving parts
• Servicing bearings or motors
• Troubleshooting, servicing, or replacing electronic components or assemblies
• Troubleshooting, servicing, or replacing pneumatic components or assemblies.
Situations where LOTO practices might not be required are when troubleshooting electrical, pneumatic,
or hydraulic components or assemblies that make de-energizing the whole system impractical.
Troubleshooting or servicing the SL-940E/SL-941E while powered up and operating should only be
accomplished by fully trained and qualified personnel. There should always be a second person present
when performing maintenance on a system under power.
To lockout/tagout the electrical and pneumatic energy:
1. Turn the Main Power Circuit Breaker on the rear of the system to the
OFF (0) position.
2. Unplug the main power cable from the back of the Power Manager.
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3. Rotate the Main Air Pressure knob counterclockwise until the gauge reads 0 psi and then
disconnect the main air supply by the quick release fitting.
4. Install an approved, keyed lock on the locking flange of the Main Circuit Breaker so it cannot
be turned on; tag it with an approved tag.
Ensure that the owner, date, reason, and estimated time for repair are clearly marked on
the tag.
5. Install an approved lockout clamp and keyed lock onto the power connector so it cannot be
reconnected to the Power Manager, and attach an approved tag.
Ensure the owner, date, reason, and estimated time to repair are clearly marked on the
tag.
6. Install an approved lockout clamp and keyed lock onto the pneumatic fitting so it cannot be
reconnected to the Main Air Regulator, and attach an approved tag. Ensure the owner, date,
reason, and estimated time to repair are clearly marked on the tag.
NOTE Warning tags document the name of the technician taking the equipment out of operation,
the date, and other facility-required information. It is a warning that the equipment cannot
be put back into operation until the authorized technician has removed the tag.
Figure 2-8 Lockout of Electrical Power Figure 2-9 Lockout of Pneumatic Pressure