HIMA HIMatrix F3 DIO 16/8 01, Руководство пользователя

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F3 DIO 16/8 01 3 Product Description
HI 800 177 E Rev. 1.01 Page 17 of 58
3.1.4 Line Diagnosis with Digital Outputs
The remote I/O is provided with a line diagnosis (short-circuits and open-circuits ) for the
digital outputs. The line diagnosis is activated using the
Line Monitoring [BOOL] ->
system
variable in SILworX and the
DO[xx].LSLB Monitoring
system signal in ELOP II Factory.
The line diagnosis measures the impedance of the connected load such as described in the
following section.
The line diagnosis detects the following faults:
ƒ Short-circuit between DO+ and external DO-
ƒ Short-circuit between DO+ and external L+
ƒ Short-circuit between DO+ and external L-
ƒ Short-circuit between DO- and external L+
ƒ Short-circuit between DO- and external L-
ƒ Open-circuit between DO+ and DO-
Line diagnosis of the digital outputs is only possible when used in a two-pole configuration.
The line diagnosis reports detected faults to the user program.
ƒ In SILworX, using the system variables
-> + Error Code [WORD]
or
-> - Error Code
[WORD]
.
ƒ In ELOP II Factory, using the system signals
DO[xx].+Error Code
or
DO[xx].-Error Code
.
Line diagnosis is offered in two operating modes:
ƒ Line diagnosis for lamp loads and inductive loads, and
ƒ line diagnosis for ohmic, capacitive loads.
i
With applications in accordance with EN 954-1 Cat. 4, the line diagnosis status signal must
be used to switch off the outputs (DO+, DO-), if a failure occurs.
i
If the requirements previously described cannot be met, observe the following case:
If a short-circuit occurs between DO- and L-, a relay may be energized or some other
actuator may be set to a different switching state.
Reason: During the monitoring time specified for line diagnosis, a 24V voltage level (DO+
output) is present on the load (relay, switching actuator) allowing it to receive enough
electrical power to potentially switch to another state.
With line diagnosis, set a test period and an adequate monitoring time.
3.1.4.1 Line Diagnosis for Lamp Loads and Inductive Loads
To detect short-circuits, the remote I/O sends a 24V pulse to the output circuit for the
duration of 500 µs. After this time, it sends a 10V pulse for line diagnosis for the duration of
the monitoring time.
3.1.4.2 Line Diagnosis for Ohmic, Capacitive Loads
To diagnose the line for ohmic and capacitive loads, the remote I/O sends a 10V test pulse
to the output circuit for the duration of the monitoring time. This type of line diagnosis is
particularly recommended for ohmic and ohmic capacitive loads. With inductive loads or
lamp loads, error messages related to the short-circuit may be generated.