EN.IO.APC.APR.ALW
28
Revision 02.A.005/2020.06
9. START-UP
As standard, the transmitter is adjusted to a set range equal to the base range, unless a specific set
range is provided in the order. The base range and the basic unit of the transmitter can be read out
from its nameplate (
➔
).
Use the transmitter within the allowable pressure limits. Risk of injury due to component
breakage after exceeding the maximum permitted operating pressure.
9.1. Alarm configuration
Transmitters has a developed internal diagnostics, which monitors the work of their electronic circuits,
process and environmental parameters. For transmitters in Exd or Exi/Exd version, diagnosed dan-
gerous states or malfunctions of the internal transmitter systems result in setting the alarm current
I_AL<3,600 mA. For transmitters in standard or Exi version, diagnosed dangerous states or malfunc-
tions of the internal transmitter systems result in setting the alarm current depending on the configura-
tion I_AL<3,650 mA or I_AL>21,500 mA. The user has an option of enabling/disabling of the current
alarms. Current alarms are disabled by default. The figures below shows the normal operation ranges
of the transmitter process output and the ranges of saturation and alarm currents.
Figure 12.
Set range current, saturation currents, alarm currents of transmitters in Exd or Exi/Exd version.
1 - Set 4
…20 mA current area is corresponding to setpoint 0...100% of the process output.
2 - Lower saturation current of 3,800 mA for NAMUR mode.
3 - Lower saturation current of 3,900 mA for NORMAL mode.
4 - Upper saturation current of 20,500 mA for NAMUR and NORMAL mode.
5 - Alarm current area I_AL<3,600 mA for internal diagnostic alarms.
6 - Alarm current area I_AL>20,660 mA for alarms related to safe failures with external diagnostics.
Содержание 0005 0004 0006 0000 0000 0002 0001 72
Страница 35: ......
