Faceplate Display; Maintenance - GE Multilin GEK-113000T User Manual

1.4 650 HARDWARE
without exceeding driver capability. For larger systems, additional serial channels must be added. It is also possible to use
commercially available repeaters to increase the number of relays on a single channel to more than 32. Do not use other
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connection configurations different to the recommended.
Lightening strikes and ground surge currents can cause large momentary voltage differences between remote ends of the
communication link. For this reason, surge protection devices are internally provided. To ensure maximum reliability, all
equipment should have similar transient protection devices installed.
To communicate through the F650 rear Ethernet port from a PC a crossover cable is required. If the connection is
performed through a hub or a switch, a direct Ethernet cable is required.
All messages are displayed on a 20x4 character LCD display. An optional graphic display is also available. Messages are
displayed in different languages according to selected model.
F650 requires a minimum amount of maintenance when it is commissioned into service. F650 is a microprocessor based
relay and its characteristics do not change over time. As such no further functional tests are required. However, it is
recommended that maintenance on the F650 be scheduled with other system maintenance. The maintenance may involve
the following:
In-service maintenance:
1. Visual verification of the analog values integrity such as voltage and current (in comparison to other devices on the
corresponding system).
2. Visual verification of active alarms, relay display messages and LED indications.
3. Visual inspection for any damage, corrosion, dust or loose wires.
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Figure 1–17: RS485 CONNECTION FOR 650 UNITS
F650 Digital Bay Controller
1 GETTING STARTED

1.4.3 FACEPLATE DISPLAY

1.4.4 MAINTENANCE

GEK-113000T