21
Electrical Connection
- continued -
Note
Link screen only to terminal 3, ensure electrical continuity and connect it once to the
central earthing point (CEP).
The rated voltage is indicated on the name plate.
When switching off inductive loads, voltage spikes are produced that may impair the
operation of control and measuring systems. Connected contactors must be provided
with suppressors such as RC combinations as specified by the manufacturer.
Even in correctly wired systems high frequency interference caused by the installation
can lead to system outages and malfunction alarms. For more information please refer
to the fault-finding list in the section
Malfunctions - Troubleshooting
.
Tools
Screwdriver for slotted screws, size 2.5, completely insulated according to VDE 0680
Bus cable
All devices (level, conductivity, temperature) are interconnected via CAN bus. The CANopen protocol is
used for the data exchange between the equipment groups. All devices have an electronic
address – the node ID. The four-core bus cable serves as power supply and data highway for high-
speed data exchange.
The CAN address (node ID) can be set between
1 - 99
.
The control unit LRR 1-40 has already been configured at our works for operation with other GESTRA
components and can be used straight away without having to set the node ID.
If several identical systems are to communicate in one CAN bus network, set a different node ID
for each system (e. g. limiter, controller, etc).
If the length of the CAN bus cable exceeds 125 m change the settings of the code switch
9
.
For more information on switch positions see
Basic Settings - Switch positions
.
Basic Settings
Содержание LRR 1-40
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