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F3 DIO 16/8 01
3 Product Description
HI 800 177 E Rev. 1.01
Page 15 of 58
3.1.1.1
Reaction in the Event of a Fault
If the device detects a fault on a digital input, the user program processes a low level in
accordance with the de-energized to trip principle.
The device activates the
FAULT
LED.
In addition to the channel signal value, the user program must also consider the
corresponding error code.
The error code allows the user to configure additional fault reactions in the user program.
3.1.2 Line
Control
Line control is used to detect short-circuits or open-circuits and can be configured for the
remote I/O, e.g., on EMERGENCY STOP inputs complying with Cat. 4 in accordance with
EN 954-1.
To this end, connect the pulsed outputs TO 1...TO 2 of the system to the digital inputs (DI)
of the same system as follows:
EMERGENCY STOP 1
EMERGENCY STOP 2
EMERGENCY STOP devices in
accordance with EN 60947-5-1 and
EN 60947-5-5
Figure 4:
Line Control
The remote I/O pulses the pulsed outputs to detect short-circuits and open-circuits on the
digital inputs (DI). To do so, configure the
Value.[BOOL]
-> system variable in SILworX and
the
DO[0x].Value
system signal in ELOP II Factory. The variables for the pulsed outputs
must begin with channel 1 and reside in direct sequence, one after the other.
If the following faults occur, the
FAULT
LED located on the front plate of the controller
blinks, the inputs are set to low level and an (evaluable) error code is created:
Cross-circuit between two parallel lines,
Improper connections of two lines (e.g., TO 2 to DI 3),
Earth fault of a line (with earthed ground only),
Open-circuit or open contacts, i.e., including when one of the two EMERGENCY STOP
switches mentioned above has been engaged, the
FAULT
LED blinks and the error
code is created.