Endress+Hauser Micropilot FMR53 - Page 44

Electrical connection Micropilot FMR53, FMR54 HART
44 Endress+Hauser
7.1.3 Supply voltage
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) 4) 5)
R [ ]?
U
0
[V]
10
10.4 21.4
20 30 35
0
500
A0017140
Ex ia / IS 10.4 to 30 V
3) 4) 5)
• Ex d(ia) /
XP
• Ex ic(ia)
• Ex nA(ia)
• Ex ta /
DIP
13 to 35 V
5) 6)
U
0
[V]
10
13 24
20 30 35
0
500
R [ ]Ω
A0034771
Ex ia + Ex
d(ia) / IS +
XP
13 to 30 V
5) 6)
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 minimum error current (3,6 mA). The startup current can be parametrized. If the device is operated with a
fixed current I ≥ 5,5 mA (HART multidrop mode), a voltage of U ≥ 10,4 V is sufficient throughout the entire
range of ambient temperatures.
4) In the current simulation mode a voltage U ≥ 12.5 V is required.
5) If the Bluetooth modem is used, the minimum supply voltage increases by 3 V.
6) For ambient temperatures T
a
≤ -20 °C (-4 °F) a minimum voltage of 16 V is required for the startup of the device
at the minimum error current (3.6 mA).