Operation
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5 Operation
Once the program has been transferred to the non-volatile memory, the relay restarts. On
startup, the relay performs a self-test. If it is unsuccessful, the relay will switch to error mode
(sect. 5.1). Otherwise, the program will run (Fig. 5.1)
WARNING
The program is executed after it has been transferred to the relay. It is
recommended to transfer the program before wiring the relay.
Otherwise ensure that all external devices are disconnected from outputs before
transferring the program.
NOTE
Before starting
Before switching on, make sure that the device was stored at the specified ambient
temperature (-
20 ... +55 °C) for at least 30 minutes.
Operation of the device is cycle oriented:
1. operational readiness test
2. input process image update
3. program execution for one cycle
4. output process image update
5. back to 1.
Fig. 5.1 Operating sequence
5.1
Error mode
In the error mode, the program is stopped until the error cause is eliminated.
Table 5.1 Error indication
Indication
Cause
Remedy
LOGIC Program
INVALID
Invalid program
Repair the program in ALP
LOGIC Program
MEMORY ERROR
Retain variables cannot be read
LOGIC Program
BLOCKED
RUN-STOP mode is activated,
program stopped (sect. 4.4)
Remove the RUN-STOP jumper
and restart the device
LED F2 lit
Firmware damaged
Update the firmware or contact
the service center
LED F2 blinks
LOGIC Program
STOPPED
Program stopped
Start the program using system
menu and restart the device
5.2
System menu
The system menu allows you to view the most important parameters of the device and
perform a quick configuration without connection to ALP.
The program can be interrupted by using the system menu item
Device > Program
. Select
Stop program
to stop the program execution or
Run program
to start it. After changing the
setting, the device must be restarted for the change to take effect. When the program is
interrupted, all parameters except the network variables are available via via system menu
and Modbus network in Slave mode.
