Wenglor EtherCAT ZAI02CN0x, Руководство по эксплуатации

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19 Connection Boxes
5.4.2 Connecting Digital Sensors and Actuators
1 2
3 4
Pin Function
1 24 V
2
Freely programmable
input/output
3 0 V
4
Freely programmable
input/output
Unused sockets must be sealed with blanking caps (included in scope of delivery). IP 67 protection cannot
otherwise be assured.
Any short-circuiting at the IO pins is displayed via the website, as well as in the controller via EtherCAT. This
message, which can be enabled via the device parameters, 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 PROFINET. The inputs can still be read in as well, although separate power supply for U
Digi-
tal I/O
and U
System/Sensor
is required to this end.
ZAI02CN01 and ZAI02CN02 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. The current status can
be read out via the “PROFINET” Status module
Individual output pin monitoring and overall current monitoring for digital U
Digital I/O
has also been integrated
into the ZAI02CN02. The individual pin monitoring function detects overloading of greater that 2 A at the output
pins and attempts to restart the components after a short period of time. Overall current monitoring is neces-
sary 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 neverthe-
less 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.