Watson-Marlow qdos H-FLO Reference Manual page 69

14.2.3 Control signal limits
The control signal limits are provided in the table below, this information applies to all Universal
and Universal+ models (M and T types).
Parameter
Digital Input voltage High
Digital Input Voltage Low
Digital Input Abs Max voltage
Digital Input current Limit
Analogue input measurement
range
Analogue input Abs Max Current
M12 Output Relay Current
M12 Output Relay switching
Voltage
Terminal Output Relay Current
Terminal Output Relay Switch Volts
Speed Output: 4-20 mA Hardware
Applied External Voltage: 4-2 0mA
Sensor 24V Supply
Limits
Sym Min Nom Max
VD 10.4 30
IH
VD 0 9.2
IL
VD -60 60
in
ID 2.25
in
Iin 0 30
IA -0.01 33
in
IL 1
V 24 60
OL
IL 5
V 250
OL
Io 0 25
-30 +30
24
Units Comment
24V IEC 61131-2 Type 3
V
V
IEC 61131-2 Type 3
mA
mA
Internally limited to
mA
max voltage
Resistive load
A
VDC
Resistive load
A
VAC
±5%, 250R load
mA
To 0V common
Fault condition
V
Up to 100 mA total
V
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