G4 Multi Channel Weighing Instrument
Installation
Mechanical installation
G4 Multi Channel Weighing Instrument type RM is designed for mounting on a flat
surface by DIN rail, for example in a protective cabinet. To remove the instrument
from the rail, the black lever at the lower bottom side of the instrument must be
engaged.
All electrical connections to the instrument are made at the front side so enough
room for connectors and appropriate cable ducts should be arranged.
Electrical installation
The field wiring of the instrument shall be suitable to the environment
(e.g. chemically) in the end-user application.
!
Field wiring installation shall comply with any national regulations, hereunder
National Electrical Code (NEC) for US and/or Canadian Electrical Code for Canada.
• A switch or circuit-breaker shall be included in the building installation.
• The switch shall be in close proximity to the equipment and
within easy reach of the operator
• The switch shall be marked as the disconnecting device for the equipment.
• The equipment switch or circuit-breaker employed as disconnecting device shall
comply with relevant requirements of IEC 60947-1 and IEC 60947-3.
The power supply for the instrument should be made via an external DC source.
All electrical connections to the instrument, including connection to ground,
are made via plug-in terminal blocks. Shielded cables are needed, except for
the power input, and the cables should be routed so that electromagnetic
interference from power cables is avoided.
WARNING
Make sure that that the power to the instrument is turned off before:
- any modules are removed from or inserted in the instrument.
- any connections are connected to or disconnected from the instrument.
All modules should be regarded as ESD sensitive. Make sure that an ESD safe
environment is maintained when inserting modules, removing modules and
when handling modules separately from the instrument. Modules must be kept
in metallised ESD bags when not mounted in the instrument.
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