Beckhoff KL9540, Документация

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Product overview
KL9540, KL9540-0010 and KL9550 10 Version: 3.0.1
2.3 KL9540-0010 - introduction
Fig. 2: KL9540-0010
Surge filter terminals for field supply of analog Bus Terminals
The KL9540-0010 system terminal includes an overvoltage filter for the 24 V field supply.
The filter protects the Bus Terminal from line-bound surge voltages that can occur due to high-energy
disturbance variables such as switching overvoltages at inductive consumers or lightning strikes at the
supply lines.
The KL9540-0010 can protect Bus Terminal stations in particularly harsh environments from damage.
The use of such overvoltage filters is stipulated by the ship classification organizations in shipbuilding and
on/offshore applications in which GL certification is required.
The KL9540-0010 is intended in particular for the protection of analog terminals; the standard variant
KL9540 for digital terminals.
The LED indicates the 24 V rated voltage. The terminal does not transfer process data to the higher-level
control system.
LED displays
LED Meaning
Power (green) on Field supply voltage present