Akytec MU210-410, Руководство пользователя

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5 Construction and operation
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5.10 Diagnostics of outputs and loads
The Module outputs detect faults listed in Table 5.14 .
Table 5.14 Diagnostics of output stage faults (outputs DO1–DO8, DO9–DO16)
Fault Note
Malfunction of the entire output stage
Overheating of the output stage Diagnostics of the above malfunctions occurs
regardless of the selected output stage mode and
cannot be disabled. In case of detecting any of the
faults, the entire output stage is switched off (DO1–
DO8 or DO9–DO16)
Increased voltage in the output stage
power circuit
Malfunction of individual elements of the output stage
Transistor output overheating Diagnostics of the above malfunctions occurs
regardless of the selected output stage mode and
cannot be disabled. In case of detecting any of the
faults, only the faulty output is switched off.
Overcurrent in load circuit
Short circuit in the load circuit (only if the
output state is
On ) *
Load break
Load break (only if the output state is
Off )*
The load break diagnostics is enabled during the
module setup and works only for the output in the high-
side switch mode. The maximum load resistance, at
which the load break diagnostics works, is 100 kΩ
NOTE
* In the high-frequency PWM signal operation mode or with a small value of the PWM duty
cycle, malfunctions may not be diagnosed
When the fault is detected, the red output status LED lights up. The status of the outputs is written in
the corresponding registers. The list of Modbus registers is given in
Section 5.5.1 .
NOTICE
For operation of the load interruption monitoring, a current of not more than 1 μA is always
present in the load circuit.
5.11 Safe output status
A safe output status is possible for each output.
The output switches to the safe state, if at the time of turn-on or during the time-out time there are no
commands from the Network Master. The value of the
Safe status is set in percentage (from 0 to
100%) at the module output. This value determines the duty ratio of the PWM.
Time-out is set by user. If the time-out is set to
0 , safe output state is off. When the Module is
switched on, it will go into the state that was last set before shutdown, and will remain in it until a new
command is received from the Network Master.
NOTE
The factory setting for Safe state activation timeout is activated is 30 seconds .