Cobod BOD2-444 - Page 16

Instruction Manual - Original Version
Page 16 of 50
Components included in the safety function.
Input part
Logical part
Output part
Encoder.
If the speed limit of 250mm/sec is
exceeded by the X-axis or the print
head, the machinery is stopped.
The encoders are located at/on the
drive for the X-axis and on the drive
for the Print head.
Safety controller.
Intelligent controller monitoring the
safety function.
The service life of the safety
controller is 20 years.
The safety function i.e. the machine
must not be used beyond 20 years.
The use beyond 20 years is
conditional to the fact that the
relevant components are replaced by
new components of identical or
improved properties than the
original ones.
The safety controllers are located in
the control cabinets.
Servo drives.
Disconnects the power supply to the
moving parts.
- Y-axis (Up-, Down wards);
- X-axis (For-, Back- wards);
- Print head (Sidewards);
- Mixer in the print head.
- Rotation of the print head.
The service life of the servo drives is
20 years.
The servo drives are located in the
control cabinet.
Displays and alarms
When the door is open, the status will appear on the operator monitor:
”Door open, running with reduced speed”
Operating conditions
Works:
- only together with perimeter guarding and interlocked door;
- in automatic and manual mode when interlocked door is open.
Maintenance and test
The encoders must be tested before commissioning, after each installation or reinstallation of the machine.
Test by opening the door, speed must be reduced to 250 mm/sec. When door is closed, speed is increased.
As a minimum, the encoders function must be visually checked and activated at least every 6 months.
Also see section 7 of this instruction manual.
The safety function complies with EN ISO 13849-1:2015.
The speed monitoring function is constructed as a Category 3, PL d.
Interlocked door, perimeter guarding (optional, speed > 250mm/sec.)
This safety function is to protect the operator against the hazardous fast moving parts (Speed > 250mm/sec), the
X-axis and the movement of the print head.
The perimeter guarding is optional and comes together with the speed monitoring, which also is optional.