D
R
A
F
T
Micropilot FMR53, FMR54
Hauser
V. 1, Rev. 7, 26-10-2012
25
Supply voltage
An external power supply is required.
Various supply units can be ordered from Hauser: see "Accessories" section (
®
ä
86)
2-wire, 4-20mA HART, passive
"Power Supply,
Output"
1)
"Approval"
2)
Terminal voltage U at
the device
Maximum load R, depending on the supply voltage U
0
at the
supply unit
A:
2-wire; 4-20mA HART
• Non-Ex
• Ex nA
• Ex ic
• CSA GP
10.4 to 35 V
3)
R [
]
?
U0 [V]
10
10.4
21.4
20
30
35
0
500
A0017140
Ex ia / IS
10.4 to 30 V
3)
• Ex d(ia) / XP
• Ex ic(ia)
• Ex nA(ia)
• Ex ta / DIP
12 to 35 V
4)
R [
]
W
U0 [V]
10
12
23
20
30
35
0
500
A0019136
Ex ia + Ex d(ia) / IS + XP
12 to 30 V
4)
1)
Feature 020 of the product structure
2)
Feature 010 of the product structure
3)
For ambient temperatures T
a
£
-20 °C (-4 °F) a minimum voltage of 15 V is required for the sartup of the device at the MIN error current (3,6 mA). The
startup current can be parametrized. If the device is operated with a fixed current I
³
5,5 mA (HART multidrop mode), a voltage of U
³
10,4 V is sufficient
throughout the entire range of ambient temperatures.
4)
For ambient temperatures T
a
£
-20 °C (-4 °F) a minimum voltage of 16 V is required for the satrtup of the device at the MIN error current (3.6 mA).
"Power Supply, Output"
1)
"Approval"
2)
Terminal voltage U at
the device
Maximum load R, depending on the supply voltage U
0
at the
supply unit
B:
2-wire; 4-20 mA HART,
switch output
• Non-Ex
• Ex nA
• Ex nA(ia)
• Ex ic
• Ex ic(ia)
• Ex d(ia) / XP
• Ex ta / DIP
• CSA GP
12 to 35 V
3)
R [
]
W
U0 [V]
10
12
23
20
30
35
0
500
A0019136
• Ex ia / IS
• Ex ia + Ex d(ia) / IS + XP
12 to 30 V
3)
1)
Feature 020 of the product structure
2)
Feature 010 of the product structure
3)
For ambient temperatures T
a
£
-30 °C (-22 °F) a minimum voltage of 16 V is required for the satrtup of the device at the MIN error current (3.6 mA).
