Connection Diagrams (Examples) - Landis+Gyr E650 Series User Manual

Mechanical construction
Terminal layout
(example ZMD300xT)
3.4

Connection diagrams (examples)


D000030108 en m – E650 Series 3 – ZMD300AT/CT – User Manual
The top row of terminals (level 1) consists of spring-loaded terminals and
comprises

Extension board terminals on the left
Depending on the version, up to 4 control inputs or 6 output contacts, 3
digital inputs and 2 relays outputs or a combination of these with
maximum 6 inputs and outputs, or voltage connections for a separate
supply

Communication unit terminals on the right
The centre row of terminals (level 0) likewise consists of spring-loaded
terminals and comprises

Voltage outputs U1, U2, U3 and N, tapped from the relevant phase
input

3 fixed control inputs with a common return line G (electrically isolated)

2 output contacts for transferring fixed valency pulses or control
signals (electrically isolated)
The lower row of terminals comprises the phase connections with input and
output of the circuit for each phase with the voltage connection in between
and neutral conductor at far right.
Inputs and/or
output contacts of
extension board
U2 U3
U1
L1
L2
Phase connections
Figure 29. Terminal layout ZMD300xT
Binding connection diagrams
The following connection diagrams should be considered examples. The
connection diagrams provided at the rear of the front door and visible when
the door is open are always binding for the installation.
Pulse Communication
inputs interfaces
Communication unit
N
L3 N
35/84
Control inputs and
output contacts
Voltage outputs
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