Emerson Fisher FLOBOSS 407

FloBoss 407 Instruction Manual
3-44 Rev 5/00
3.7.4 Discrete Input Modules—Source and Isolated
Source Module Specifications
FIELD WIRING
TERMINALS
INPUT
A:
Not used
B:
Discrete device source/signal
C:
Common
Type:
Contact sense.
Range:
Inactive, 0 to 0.5 mA.
Active, 2 to 9 mA.
Source Voltage:
11 to 30 Vdc.
Source Current:
Determined by
source voltage (Vs), loop resistance
(Rl), and scaling resistor (Rs, 10
ohm supplied):
I = (Vs - 1)/(3.3K + Rl + Rs)
POWER
REQUIRE-
MENTS
INPUT
ISOLATION
SURGE
WITHSTAND
Source Input:
11 to 30 Vdc, 9 mA
maximum from ROC power supply
or 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.
Meets IEEE 472/ANSI C37.90a.
Isolated Module Specifications
FIELD WIRING
TERMINALS
INPUT
A:
Not used
B:
Positive discrete input
C:
Negative discrete input
Type:
Two-state current sense.
Range:
Inactive; 0 to 0.5 mA.
Active; 2 to 9 mA.
Current:
Determined by input
voltage (Vi), loop resistance (Rl),
and scaling resistor (Rs, 10 ohm
supplied):
I = (Vi - 1)/(3.3K + Rl + Rs)
Maximum Voltage:
30 Vdc
forward, 5 Vdc reverse.
POWER
REQUIRE-
MENTS
INPUT
ISOLATION
4.9 to 5.1 Vdc, 1 mA maximum
(supplied by ROC).
Isolation:
100 megohm 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.