FloBoss 407 Instruction Manual
3-48 Rev 5/00
3.7.7 Pulse Input Modules—Source and Isolated
Source Module Specifications
FIELD WIRING
TERMINALS
INPUT
A:
Not used
B:
Pulse input/source voltage
C:
Common
Type:
Contact sense.
Source Voltage:
11 to 30 Vdc.
Range:
Inactive, 0 to 0.5 mA.
Active, 3 to 12 mA.
Source Current:
Determined by
source voltage (Vs), loop
resistance (Rl) and scaling resistor
(Rs):
I = (Vs - 1)/(2.2K + Rl + Rs)
POWER
REQUIREMENTS
INPUT
ISOLATION
Source Input:
11 to 30 Vdc, 6
mA maximum from ROC power
suppler I/O converter card.
Module:
4.9 to 5.1 Vdc, 1 mA
maximum (supplied by ROC).
Not isolated. Terminal C tied to
power supply common.
Isolated Module Specifications
FIELD WIRING
TERMINALS
INPUT
A:
Not used
B:
Positive pulse input
C:
Negative pulse input
Type:
Two-state, current-pulse
sense.
Range:
Inactive; 0 to 0.5 mA.
Active; 3 to 12 mA.
Input Current:
Determined by
input voltage (Vi), loop resistance
(Rl) and scaling resistor (Rs):
I = (Vi - 1)/(2.2K + Rl + Rs)
POWER
REQUIREMENTS
INPUT
ISOLATION
4.9 to 5.1 Vdc, 2 mA maximum
(supplied by ROC).
Isolation:
100 MΩ minimum,
input to output, and input or
output to case.
Voltage:
4,000 Vac (RMS)
minimum, input to output.
Capacitance:
6 pF typical, input
to output.
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