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Sensor signal
evaluation
Transducer Block
(parameters that
describe the device)
Figure 1–1. Default block configuration
Inputs & Outputs
Thermo Fisher Scientific
Physical Block
(parameters of the
physical unit)
Primary value
(main value)
The characteristics of the input and output options for the LevelPRO with
fieldbus are summarized in the table below.
F
OUNDATION
Note The I/O listed below can be configured via F
More I/O are available with the standard LevelPRO but can only be
configured using other interfaces. Reference the LevelPRO user guide (P/N
717778).
▲
Table 1–1.
Type
Characteristics
Current output
3.8–20.5 mA DC.
Standard configuration:
- Isolated, loop-powered, 24
Vdc input, 700 ohm max. load.
Alternate configurations:
- Non-isolated, self-powered,
700 ohm max. load.
- Isolated, self-powered, 700
ohm max. load.
Optional relays
Two relays optionally available on
the AC power/ relay board.
Form C SPDT, isolated 8 A, 220
Vac.
Contact closure
Two contact closure inputs
inputs
provided on the CPU.
Analog Input Block
(parameters important to the
process control system)
OUNDATION
Comments
Default range is 4–20 mA DC. One
current output is provided on the
CPU.
Piggyback board (P/N 886595)
required for isolated, self-powered
configuration.
Process alarms and system fault or
warning alarms can be assigned to
control (open/close) relays.
Execute system commands based
on a user-provided contact switch
opening or closing input.
LevelPRO with F
™ fieldbus Application Guide
OUNDATION
Product Overview
Fieldbus Overview
OUT
fieldbus.
1-3
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