Technical Manual
2-4
Field Bus
Slot for optional Fieldbus interface. Profibus DP-V1, DeviceNet and ControlNet are
available. See section Profibus-DP Fieldbus Adaptor or DeviceNet Fieldbus Adaptor or
ControlNet Fieldbus Adaptor later in this chapter for details.
USB
The USB connector is intended for USB memory only. This port has operational
insulation (from HW version 2). It should be considered as a SELV/SELV-E circuit.
USB Hub is not supported.
Ethernet
This is a SELV circuit. Use a category 5 cable to connect to a PC (point to point
connection) or to connect to other equipment through a switch, hub or router. Use an
electrically isolating network device if the instrument is being connected to the public
network.
DC supply
The output of the external DC source must be rated 24 V
, ±15%
including fluctuations, min. 15 W. The DC source must provide Double
Insulation between Mains parts and 24 V SELV or SELV-E Circuit, and a
limited-energy circuit (maximum available current of 8 A). For the US
market this energy limit can be achieved with an ANSI/UL248-14 fuse rated 5A. For
other markets an IEC 60127 T type fuse rated 4A may also be used.
24 VDC power is connected to terminals 19, 20 and 21. The G5 instrument should be
powered by 24 V
, connected according to the diagram below. To achieve functional
grounding, terminal 21 should be connected to ground.
See Technical data for input voltage ratings.
19. +24 VDC
20. 0V
+
-
21. PE
+24 VDC
power supply
!
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