BECKHOFF KL2602 - Manual (Page 5)

Product overview
KL2602 and KL2622 3
2 Product overview
2.1 Functional description
The KL2602 and KL2622 output terminals have two relays, each with a single contact, and can be used
to switch devices requiring mains power and operating at up to 230 V
AC
. The signal state of each relay is
shown by an LED.
• The relay contacts of the KL2602 are joined to the power contacts.
• The relay contacts of the KL2622 are potential-free, and are not joined to the power contacts. The
KL2622 only loops through the PE power contact.
LED display
The signal LEDs indicate the operational state of the associated terminal channel.
• On: Relay contact closed
• Off: Relay contact opened
Watchdog timer overflow
If no process data is transferred to the terminal from the Bus Coupler for 100 ms, the green LEDs go out,
and the relay contacts are opened.
Process data
The bit-width in the process image is 2 bits.