AL-3
MONITOR
System parameters
Parameter
Description, values, default value
MOD
Mode (operating mode)
1CH
• Single channel
Monitors an analogue signal at input 1 with 2 limit values (outputs 1 and 2).
2CH
• Dual channel
Simultaneously monitors two different analogue signals at inputs 1 and 2 with one limit
value each (In1 → output 1; In2 → output 2).
The analogue output reacts to the signal at input 1.
A-B
• Comparator (subtraction mode In1-In2)
Forms the difference of 2 analogue signals and monitors the differential value with 2
limit values (outputs 1 and 2). The analogue output reacts to the differential signal.
Au B
• Comparator (addition mode In1+In2)
Forms the total of 2 analogue signals and monitors this with 2 limit values (outputs 1
and 2). The analogue output reacts to the signal of the total.
• Values: 1CH, 2CH, A-b, Aub
• Default value: 1CH (single channel)
VER
Software Version
The installed software version is displayed (5-digit number with abbreviation VCO)
INx, INP
Input (input signal)
4 -20
Selection of the input signal in the 1CH/2CH or A-B/A+B mode
0 -20
• Values: 4-20, 0-20 [mA]
• Default value: 4...20 mA
DHx, DHI
Display High (end value of the measuring range)
Corresponds to the actual measuring value at 20 mA
• Values: 1CH/2CH mode: -9999.0...9999.0; A-B/A+B mode: -4999.0...4999.0
• Default value: 20.0
DLx, DLO
Display Low (start value of the measuring range)
Corresponds to the actual measuring value at 0 or 4 mA
• Values: 1CH/2CH mode: -9999.0...9999.0; A-B/A+B mode: -4999.0...4999.0
• Default value: 4.0
FOx
Function Output (switching function of the outputs)
(1)
Relay energises (transistor output conductive) when the current
value is below the switch point. Switches back at SP + HY.
(2)
Relay de-energises (transistor output blocked) when the current
value is below the switch point. Switches back at SP + HY.
(3)
Relay energises (transistor output conductive) when the current
value is above the switch point. Switches back at SP - HY.
(4)
Relay de-energises (transistor output blocked) when the current
value is above the switch point. Switches back at SP - HY.
(5)
Relay is energised (transistor output conductive) within a window
(acceptable range).
(6)
Relay is de-energised (transistor output blocked) within a window
range.
32
Parameter list
see page 41
X
display
principle