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DF21xx DF22xx DF25xx
Electronic circuit breakers, IO-Link
10
7 Operating and display elements
5
2
3
4
1
Fig. 2: Example DF21xx supply module
2
3
4
1
Fig. 3: Example DFx2xx circuit protection module
7.1 DF21xx supply modules
The different operating states of the circuit protection modules are indicated by the status LED.
Status LED
Operating status
IO-Link communication
—
off
Missing operating voltage
no
green
on
yes
flashing
no
orange
on
yes
flashing
no
red
on
no
flashing
no
Tab. 1: Status LED DF21xx supply modules
7.1.1 Correct operation
No fault occurred and there is connection to the IO-Link master.
7.1.2 Independent operation
No connection to the IO-Link master. If there is no connection to the IO-Link master when the
operating voltage has been applied, the supply module transfers the parameter data to the connected
circuit protection modules. The behaviour of the connected circuit protection modules is controlled via
the configuration of the supply module. Either the status of the circuit protection modules is kept
(FREEZE) or the circuit protection modules are switched off (UNFREEZE). If there is again connection
to the IO-Link master and no fault occurred, the device goes to the "correct operation" mode.
7.1.3 Uncritical error
No valid configuration data is available. The connected circuit protection modules remain switched off.
Cyclic data exchange is not possible, acyclic data exchange is conditionally possible. After the device
has received the valid configuration and parameter data, it quits this operating mode.