ELM/EKM terminal mounting on DIN rail

WARNING

Risk of injury through electric shock and damage to the device!

Bring the bus terminal system into a safe, de-energized state before beginning to mount, disassemble, or wire the bus terminals!

Assembly

The ELM terminals are locked to commercially available 35 mm mounting rails (DIN rails according to EN 60715) as follows described:

The ELM terminal can easily be latched onto the DIN rail. Therefore, the clips of the terminal on top and down side have to be opened first:

ELM/EKM terminal mounting on DIN rail 1: — Fig.265: Opening the clips on top and down side by lifting them e.g. with a screw driver

Place the terminal together with the tongue and groove connection on the other terminals already mounted on the DIN rail and press the terminals against the mounting rail as far as they will go. Then close both clips on top and down side of the terminal respectively:

ELM/EKM terminal mounting on DIN rail 2: — Fig.266: Push-in of the ELM terminal and closing the mounting rail clips top and down

During closing of both clips there mustn't be a disruptive mechanical resistance being noticeable. The clips have to be snapped so that they're ending flat with the housing:

Attention: If the ELM terminal is clipped onto the mounting rail first and then pushed together without tongue and groove, the connection will not be operational! When correctly assembled, no significant gap should be visible between the housings.

Disassembly

Each ELM terminal is secured by a lock on the mounting rail, which must be released for disassembly. The procedure for demounting have to be done in reverse order as described in Assembly:

Release the mounting rail lock of the ELM terminal on the top and down side and you can pull the terminal out of the bus terminal block easily without excessive force.
Grasp the released terminal with thumb and index finger simultaneous at the upper and lower grooved housing surfaces and pull the terminal out of the bus terminal block.

ELM/EKM terminal mounting on DIN rail 4: — Fig.267: Opening of the upper and lower mounting rail lock and pull out the ELM terminal module

Connections within a bus terminal block

The electric connections between the Bus Coupler and the Bus Terminals are automatically realized by joining the components: The six spring contacts of the K-Bus/E-Bus deal with the transfer of the data and the supply of the Bus Terminal electronics.