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Connection Boxes
Any short-circuiting at the IO pins is displayed via the website, as well as in the controller via EtherNet/IP™. This
indicates that short-circuiting to ground or U
Digital I/O
has occurred. In the event of a short-circuit at the digital I/O
ports, communication is maintained with the Connection Box via EtherNet/IP™. The inputs can still be read in
as well, although separate power supply for
U
Digital I/O
and U
System/Sensor
is required to this end.
ZAI02EN01 and ZAI02EN02 Connection Boxes are equipped with a mechanism which protects the electronics
from overheating. Both of these Connection Boxes switch the digital outputs off in the case of overtemperature,
for example due to excessive current output or operation outside of the specified ambient temperature range.
After a cool-down phase, the Connection Boxes are started back up again automatically.
Individual output pin monitoring and overall current monitoring for digital U
Digital I/O
has also been integrated into
the ZAI02EN02.
The individual pin monitoring function detects overloading of greater than 2 A at the output pins and attempts
to restart the components after a short period of time.
Overall current monitoring is necessary because current of up to 4 A can be made available at each port.
However, the utilized power plug has a rating of max. 9 A. This total may not be exceeded by the sum of all
digital outputs. If the limit value is nevertheless violated, the Connection Box is switched to an error status and
all outputs are deactivated. The Connection Box then has to be reset in order to start it back up again. Supply
power must be briefly interrupted to this end.
Looping through to the power out socket is not monitored in this case, and adherence to the specified maxi-
mum current values for the power in plug must be assured by the user.
NOTE!
• The Ethernet ports are equipped with overvoltage discharge protection. Internal varistors
limit overvoltage to roughly 70 V.
The connection cables for the digital I/O ports may not exceed a length of 30 meters.
5.5 Diagnostics
Conduct in case of fault:
NOTE!
• Shut down the machine.
• With the help of the diagnostics information, analyze and eliminate the cause of error.
• If the error cannot be eliminated, please contact wenglor’s support department.
• Do not operate in case of indeterminate malfunctioning.
• The machine must be shut down if the error cannot be unequivocally clarified or reliably
eliminated.
DANGER!
Risk of personal injury or property damage in case of non-compliance!
The system’s safety function is disabled. Personal injury and damage to equipment.
• Conduct in case of fault as specified.
Summary of Contents for ZAI02EN0 Series
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