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Reference Manual
00809-0100-3003
Table 2-2: Terminal Row 2
Abbreviation
F NO
F NC
F C
A1 NO
A1 NC
A1 C
485+
485-
F1
F2
Refer to
and 2.
According to standard, connect three-wire connection cables to Terminal Row 1 in
positions +24v, 0V, and current loop output connected to the mA terminal. The maximum
loop resistance is 500 Ω.
Current source is the standard default operation; current sink is an option you should
specify when you order.
Relay data: 1.4 A, 30 Vdc switch voltage.
For a full description of relays, refer to
2.7
External cables
WARNING
Choose customer cable in accordance with hazardous area certification and applicable
local regulations.
The GDU-Incus has a temperature rating of 185 °F (85 °C). When used in areas with an
ambient temperature above 140 °F (60 °C), ensure cable has a rating that is equal to or
exceeds the proposed maximum working temperature.
The following data indicates maximum cable length restriction due to voltage drop based
on a nominal input voltage of 24 Vdc.
Conductor cross sectional
area/gauge
0.5 mm
1.0 mm
Reference Manual
Description
Fault relay normally open
Fault relay normally closed
Fault relay circuit contact
Alarm 1 normally open
Alarm 1 normally closed
Alarm 1 circuit contact
Factory use only
Factory use only
Factory use only
Factory use only
Table 2-1
and
Table 2-2
Maximum cable length for
standard, non-heated GDU-
Incus
2
, 20 AWG
1770 ft. (540 m)
2
, 18 AWG
2800 ft. (855 m)
for descriptions of the cable entries for terminal rows 1
Relay
options.
Installation
December 2020
Maximum cable length for
heated GDU-Incus
240 ft. (75 m)
380 ft. (115 m)
25
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