Instruction Manual Supplement
D104215X012
DLC3100 SIS Digital Level Controller
April 2018
5
D Stress levels are average for an industrial environment and can be compared to the exida profile 2 with
temperature limits within manufacturer’s rating (see table 3 and 4 below). Other environmental characteristics
are assumed to be within manufacturer’s rating.
D A practical fault injection test can demonstrate the correctness of the failure effects assumed during the FMEDA
and the diagnostic coverage provided by the automatic diagnostics.
D The HARTrprotocol is only used for setup, calibration and diagnostics purposes, not for safety critical operation.
D The application program in the logic solver is constructed in such a way that Fail High and Fail Low failures are
detected regardless of the effect, safe or dangerous, on the safety function.
D Materials are compatible with process conditions.
D The device is installed, calibrated, and maintained per manufacturer's instructions.
D External power supply failure rates are not included.
D DLC3100 MTBF = 155 years
D Diagnostic Test Interval: Range from 500 milliseconds to 7 minutes
Table 3. exida Profiles, Electronic
exida Electronic Database
Profile
According to
IEC60654-1
Ambient Temperature (
_
C)
Temperature Cycle (
_
C/365
days)
Average
(External)
Mean
(Inside box)
1 B2 30 60 5
2 C3 25 30 25
3 C3 25 45 25
Profile 1: Cabinet mounted equipment typically has significant temperature rise due to power dissipation
but is subjected to only minimal daily temperature swings.
Profile 2: Low power electrical (two-wire) field products have minimal self heating and are subjected to daily
temperature swings.
Profile 3: General (four-wire) field products may have moderate self heating and are subjected to daily
temperature swings.
Table 4. exida Profiles, Mechanical
exida Mechanical Database
Profile
According to
IEC60654-1
Ambient Temperature (
_
C)
Temperature Cycle (
_
C/365
days)
Average
(External)
Mean
(Inside box)
1 B2 30 60 5
2 C3 25 30 25
3 C3 25 45 25
4 D1 25 30 35
Profile 1: Cabinet mounted equipment typically has significant temperature rise due to power dissipation
but is subjected to only minimal daily temperature swings.
Profile 2: Mechanical field products have minimal self heating and are subjected to daily temperature
swings.
Profile 3: Mechanical field products may have moderate self heating and are subjected to daily temperature
swings.
Profile 4: Unprotected mechanical field products with minimal self heating, are subject to daily temperature
swings and rain or condensation.
To Next Page
Need help?
General
