Electronic circuit breakers, IO-Link
DF21xx DF22xx DF25xx
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7.1.4 Critical error
During initialisation an error is found or a critical error occurs. Communication with the IO-Link master
is not possible. The connected circuit protection modules are and remain switched off.
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Reboot the device.
7.1.5 System start
The supply module is initialised when the operating voltage is applied. During this time communication
with the IO-Link master is not possible.
7.2 DF22xx circuit protection modules
The different operating states of the circuit protection modules are indicated by the status LED.
Status LED
Operating status
Status of load output
—
off
Missing operating voltage, error in initialisation or chan-
nel switched off via button
off
green
on
Channel switched on via button or IO-Link, no error
on
green/orange
flashing
Load current limit reached
on
orange
on
Overload or short circuit until disconnection
on
Channel switched on via button and switched off via
IO-Link
off
red
on
Triggering via short circuit or overload
off
Undervoltage in ON status with automatic switching on
again
Tab. 2: Status LED DF22xx circuit protection modules
7.3 Interrogation of module to confirm the set nominal current
Only for circuit protection modules with adjustable nominal current.
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Press the ON/OFF/reset button of the requested channel between 2 and 5 seconds.
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The status LED of the selected channel flashes red once.
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The status LED flashes orange to display the set nominal current. The LED flashes red once to
confirm completion of the cycle. The LED flashes orange, once or multiple times, in accordance
with nominal current setting in amperes (orange flashing once = 1 A; orange flashing twice = 2 A;
etc.).
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The set nominal current is displayed five times. After 5 cycles the display changes to the current
operating status.
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To interrupt/stop the interrogation cycle, and return to normal status indication mode, press the ON/
OFF/reset button of the requested channel at any time.
7.4 Setting of the nominal current
Only for circuit protection modules with adjustable nominal current.
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Set the nominal current via IO-Link using a corresponding parameter setting software.
