Schweitzer Engineering Laboratories SEL-751 - Figure 4.106 Settings to Configure Input 1 as a 4-20 Ma Transducer Measuring Temperatures between -50°C and 150°C; Table 4.77 Analog Input Card Settings in Slot

4.183
Date Code 20170927 Instruction Manual SEL-751 Relay
Protection and Logic Functions
Global Settings (SET G Command)
Because we are only interested in cases when the temperature values exceed
their respective temperature settings (high warnings and alarm functions), we
do not use the low warnings and alarm functions. Therefore, set the lower val-
ues (AI301LW1, AI301LW2, AI301LAL) to OFF, and the three higher values
as shown in Figure 4.106. Set inputs connected to voltage driven transducers
in a similar way.
Analog (DC Transducer) Input Board
Table 4.77 shows the setting prompt, setting range, and factory-default set-
tings for an analog input card in Slot 3. For the name setting (AI301NAM, for
example), enter only alphanumeric and underscore characters. Characters are not
case sensitive, but the device converts all lowercase characters to uppercase.
Although the device accepts alphanumeric characters, the name AI301NAM
setting must begin with an alpha character (A–Z) and not a number.
=>>SET G AI301NAM TERSE <Enter>
Global
AI 301 Settings
AI301 TAG NAME (8 characters)
AI301NAM:= AI301
? TX_TEMP <Enter>
AI301 TYPE (I,V) AI301TYP:= I ? <Enter>
AI301 LOW IN VAL (-20.480 to 20.480 mA) AI301L := 4.000 ? <Enter>
AI301 HI IN VAL (-20.480 to 20.480 mA) AI301H := 20.000 ? <Enter>
AI301 ENG UNITS (16 characters)
AI301EU := mA
? degrees C <Enter>
AI301 EU LOW (-99999.000 to 99999.000) AI301EL := 4.000 ? -50 <Enter>
AI301 EU HI (-99999.000 to 99999.000) AI301EH := 20.000 ? 150 <Enter>
AI301 LO WARN L1 (OFF,-99999.000 to 99999.000) AI301LW1:= OFF ? <Enter>
AI301 LO WARN L2 (OFF,-99999.000 to 99999.000) AI301LW2:= OFF ? <Enter>
AI301 LO ALARM (OFF,-99999.000 to 99999.000) AI301LAL:= OFF ? <Enter>
AI301 HI WARN L1 (OFF,-99999.000 to 99999.000) AI301HW1:= OFF ? 65 <Enter>
AI301 HI WARN L2 (OFF,-99999.000 to 99999.000) AI301HW2:= OFF ? 95 <Enter>
AI301 HI ALARM (OFF,-99999.000 to 99999.000) AI301HAL:= OFF ? 115 <Enter>
AI 302 Settings
AI302 TAG NAME (8 characters)
AI302NAM:= AI302
? END <Enter>
Save changes (Y,N)? Y <Enter>
Settings Saved
=>>
Figure 4.106 Settings to Configure Input 1 as a 4–20 mA Transducer
Measuring Temperatures Between –50°C and 150°C
Table 4.77 Analog Input Card Settings in Slot 3 (Sheet 1 of 2)
Setting Prompt Setting Range
Setting Name :=
Fac to ry Defa ult
AI301 TAG NAME 8 characters 0–9, A–Z, _ AI301NAM := AI301
AI301 TYPE I, V AI301TYP := I
AI301 LOW IN VAL –20.480 to +20.480 mA AI301L := 4.000
AI301 HI IN VAL –20.480 to +20.480 mA AI301H := 20.000
AI301 LOW IN VAL –10.240 to +10.240 V AI301L := 0.000
a
AI301 HI IN VAL –10.240 to +10.240 V AI301H := 10.000
a
AI301 ENG UNITS 16 characters AI301EU := mA
AI301 EU LOW –99999.000 to +99999.000 AI301EL := 4.000
AI301 EU HI –99999.000 to +99999.000 AI301EH := 20.000
AI301 LO WARN 1 OFF, –99999.000 to +99999.000 AI301LW1 := OFF
AI301 LO WARN 2 OFF, –99999.000 to +99999.000 AI301LW1 := OFF
AI301 LO ALARM OFF, –99999.000 to +99999.000 AI301LAL := OFF