FMC Technologies Proline Promass 83 E - Function Description

Issue/Rev. 0.2 (12/12)
Page 64 • MN0M023
7 Block OUTPUTS Device Functions Proline Promass 83
a = Current span
1 = Operational range (measuring information)
2 = Lower signal on alarm level
3 = Upper signal on alarm level
! Note!
• If the measured value exceeds the measuring range (as defined in the functions VALUE
0_4 mA (4002) and VALUE 20 mA (4003)) a notice message is generated
(#351...354, current span).
• In case of a fault the behavior of the current output is according to the selected option
in the function FAILSAFE MODE (4006). Change the error category in the function
ASSIGN SYSTEM ERROR (8000) to generate a fault message instead of a notice
message.
CURRENT SPAN
(4001)
Use this function to define the current range. The selection specifies the operational range
and the lower and upper signal on alarm. For the current output 1 the option HART can
be defined additionally.
Options:
0–20 mA
4–20 mA
4–20 mA HART (only current output 1)
4–20 mA NAMUR
4–20 mA HART NAMUR (only current output 1)
4–20 mA US
4–20 mA HART US (only current output 1)
0–20 mA (25 mA)
4–20 mA (25 mA)
4–20 mA (25 mA) HART (only current output 1)
Factory setting:
4–20 mA HART NAMUR (current output 1)
4–20 mA NAMUR (current output 2...3)
! Note!
• The option HART is only supported by the current output designated as current output
1 in the device software, (terminals 26 and 27, see function TERMINAL NUMBER
(4080) on page 73).
• When switching the hardware from an active (factory setting) to a passive output
signal select a current span of 4–20 mA (See Operating Instructions Proline Promass
83, BA 059D/06/en/).
Current span, operational range and signal on alarm level
A0001222
Function description
OUTPUTS o CURRENT OUTPUT (1...3) o CONFIGURATION
123
I[mA]
a123
0-20 mA
4-20 mA
4-20 mA NAMUR
4-20 mA US
0-20 mA (25 mA)
4-20 mA (25 mA)
0 - 20.5 mA 0 22
4 - 20.5 mA
222
3.8 - 20.5 mA
3.5 22.6
3.9 - 20.8 mA
3.75 22.6
0-24mA 0 25
4-24mA 2 25
4-20 mA HART 4 - 20.5 mA
222
4-20 mA HART NAMUR
3.8 - 20.5 mA
3.5 22.6
4-20 mA HART US
3.9 - 20.8 mA
3.75 22.6
4-20 mA (25 mA) HART
4-24mA 2 25